Stratos Pro A2.. CONDI Conductivity Measurement with Toroidal Sensors

The Art of Measuring. User Manual English Stratos Pro A2.. CONDI Conductivity Measurement with Toroidal Sensors Latest Product Information: www.knick.de

About This Manual Return of products Please contact our Service Team before returning a defective device. Ship the cleaned device to the address you have been given. If the device has been in contact with process fluids, it must be decontaminated/disinfected before shipment. In that case, please attach a corresponding certificate, for the health and safety of our service personnel. Disposal Please observe the applicable local or national regulations concerning the disposal of waste electrical and electronic equipment. About this manual: This manual is intended as a reference guide to your device You don't have to read the book from front to back. Take a look at the Table of Contents or the Index to find the function you are interested in. Each topic is explained on a double-page spread with step-by-step instructions on how to configure the desired function. Clearly legible page numbers and headlines help you to quickly find the information: Configuration 5 Configuration Left page: How do I get to the function Alarm Settings CONTROL input (FLOW MIN, FLOW MAX) 1 1) Press menu key. 2) Select CONF using keys, press enter. 3) Select parameter set using keys, press enter. 2 4) Select ALARM menu using keys, press enter. 5) All items of this menu group are indicated by the ALA: code. Press enter to select menu, enter edit using arrow keys (see next page). Confirm (and proceed) using enter. 6) End: Press meas key until the [meas] mode 3 indicator is displayed. enter 4 5 enter ALARM: Delay enter Alarm: Sensocheck 5 Alarm: CONTROL input For flow monitoring: Max. flow alarm For flow monitoring: meas Min. flow alarm Menu item Action Choices CONTROL input The CONTROL input can generate an alarm when assigned to FLOW (flow monitoring) in the CONF menu: FLOW CNTR Flow measurement: allows monitoring the minimum and maximum flow (pulse counter) Alarm Specify value Default: 05.00 liters/h Minimum flow FLOW MIN Alarm Specify value Default: 25.00 liters/h Maximum flow FLOW MAX Right page: Which settings are provided for this function 6 68 69 2

CD-ROM Complete documentation: User manuals Safety instructions Certificates Quickstart guides Safety Instructions In official EU languages and others. EC Declarations of Conformity Knick Corporate Design 39 Manual / Bedienungsanleitungen Betriebsanleitung für Sauerstoff-Sensoren der Reihe SE 706-Memosens Å SENS MEMO MEMO SENS SENS MEMO Betriebsanleitung deutsch SE 706 SENS MEMO 14163 Berlin SE 706X/1-NMSN MEMO SENS 14163 Berlin 0044 0044 14163 Berlin BVS 10 ATEXXE089 X BVS 10 ATEX E089 II 1G ia IIC T3/T4/T6 II 1GSE Ex 706X/1-NMSN ia IIC Ex T3/T4/T6 0044 SE 706X/1-NMSN SE 706X/2-NMSN BVS 10 ATEX E089 X II 1G Ex ia IIC T3/T4/T6 Safety Instructions 14163 Berlin SE 706X/2-NMSN BVS 10 ATEX E089 X II 1G Ex ia IIC T3/T4/T6 0044 BVS 10 ATEX E089 X II 1G Ex ia IIC T3/T4/T6 SE 706X/2-NMSN BVS 10 ATEX E089 X II 1G Ex ia IIC T3/T4/T6 Stratos Pro/MS/Evo Series Pg 13.5 0044 0044 SE 706X/2-NMSN BVS 10 ATEX E089 X II 1G Ex ia IIC T3/T4/T6 Safety Instructions Betriebsanleitung Installation and Use in Hazardous Locations EC Declarations of Conformity Stratos Pro A2... ph Stratos Pro A2... PH deutsch Installation and Use in Hazardous Locations (shipped with hazardous-area devices only) Serial No. 14163 Berlin Betriebsanleitung II 1 G Ex ia IIC T3/T4/T6 BVS 10 ATEX E 089 X 120 / 225 mm Knick Corporate Design Membrankappe Manual / Bedienungsanleitungen Es gibt u.a. folgende Formate: DIN A5 DIN A6 70 x 297 mm 70 x 230 mm 98 x 110 mm 39 Å MEMO SENS MEMO Membran Betriebsanleitung für Sauerstoff-Sensoren der Reihe SE 706-Memosens Formate Die große Produktbreite des Unternehmens mit ihren unterschiedlichsten Verpackungsgrößen erfordert entsprechende Formatvarianten der Bedienungsanleitungen. orange-red ring The Art of Measuring. 14163 Berlin 0044 0044 0044 BVS 10 ATEX E089 X II 1G Ex ia IIC T3/T4/T6 BVS 10 ATEX E089 X II 1G Ex ia IIC T3/T4/T6 14163 Berlin 14163 Berlin 0044 SE 706X/1-NMSN 14163 Berlin 706X/1-NMSN SE 706X/2-NMSN Memosens Pg 13.5 -Steckkopf BVS 10 ATEX E089 X II 1G Ex ia IIC T3/T4/T6 14163 BerlinSE MEMO SENS Faltungen SENS Ø 12 mm Betriebsanleitung deutsch Aktuelle Produktinformation: www.knick.de Latest Product Information: www.knick.de Aktuelle Produktinformation: MEMO SE 706X/1-NMSN MEMO II 1G ia IIC T3/T4/T6 II 1GSE Ex 706X/1-NMSN ia IIC Ex T3/T4/T6 0044 14163 Berlin BVS 10 ATEXXE089 X BVS 10 ATEX E089 0044 SE 706X/1-NMSN SE 706X/2-NMSN BVS 10 ATEX E089 X II 1G Ex ia IIC T3/T4/T6 SE 706X/2-NMSN BVS 10 ATEX E089 X II 1G Ex ia IIC T3/T4/T6 orange-red ring 14163 Berlin 0044 The Art of Measuring. BVS 10 ATEX E089 X II 1G Ex ia IIC T3/T4/T6 SE 706X/2-NMSN Pg 13.5 BVS 10 ATEX E089 X II 1G Ex ia IIC T3/T4/T6 0044 SE 706X/2-NMSN Conductivity Measurement Stratos Pro A2... ph with Toroidal Sensors Stratos Pro A2... PH Betriebsanleitung II 1 G Ex ia IIC T3/T4/T6 BVS 10 ATEX E 089 X Quickstart Guide...3 120 / 225 mm Kurzübersicht... 14 Guide rapide... 25 Inicio rápido... 36 Membrankappe Início rápido... 47 Guida rapida... 58 Faltungen Ø 12 mm Aktuelle Produktinformation: www.knick.de Latest Product Information: www.knick.de Aktuelle Produktinformation: www.knick.de First steps after installation: Operation Menu structure Calibration Error messages and recommended actions In German, English, French, Spanish, Portuguese, and Italian. More languages on CD-ROM and on our website: www.knick.de Serial No. 14163 Berlin BVS 10 ATEX E089 X II 1G Ex ia IIC T3/T4/T6 Stratos Pro A2.. CONDI Abhängig von Format und Umfang der Bedienungsanleitungen werden unterschiedliche Faltungen effektiv eingesetzt: Klammerheftung, ZickzackFormate falz und Kreuzfalz. Die große Produktbreite des Unternehmens mit ihren unterschiedlichsten VerFarben packungsgrößen erfordert Die Bedienungsanleitungen entsprechende Formatsind grundsätzlich schwarz/ varianten der Bedienungsweiß angelegt. Farben anleitungen. werden nur zur Codierung, Es gibt u.a. folgende Darstellung von Farbdisplays Formate: und wichtiger Features eingesetzt. DIN A5 DIN A6 70 x 297 mm 70 x 230 mm 98 x 110 mm Quickstart Guide 14163 Berlin 0044 0044 14163 Berlin 14163 Berlin 0044 SE 706X/1-NMSN 0044 BVS 10 ATEX E089 X II 1G Ex ia IIC T3/T4/T6 BVS 10 ATEX E089 X II 1G Ex ia IIC T3/T4/T6 SENS 14163 Berlin 14163 Berlin 706X/1-NMSN SE 706X/2-NMSN Memosens Pg 13.5 -Steckkopf BVS 10 ATEX E089 X II 1G Ex ia IIC T3/T4/T6 14163 BerlinSE Betriebsanleitung deutsch Quickstart SENS 14163 Berlin 0044 www.knick.de SE 706 Membran G Ex ia IIC T3/T4/T6 S 10 ATEX E 089 X Specific Test Report 0044 G Ex ia IIC T3/T4/T6 S 10 ATEX E 089 X Documents Supplied Abhängig von Format und Umfang der Bedienungsanleitungen werden unterschiedliche Faltungen effektiv eingesetzt: Klammerheftung, Zickzackfalz und Kreuzfalz. Farben Die Bedienungsanleitungen sind grundsätzlich schwarz/ weiß angelegt. Farben werden nur zur Codierung, Darstellung von Farbdisplays und wichtiger Features eingesetzt. 3

Contents Documents Supplied... 3 Introduction... 7 Intended Use... 7 Safety Information...10 Overview of Stratos Pro A2... CONDI...11 Assembly...12 Package Contents...12 Mounting Plan, Dimensions...13 Pipe Mounting, Protective Hood...14 Panel Mounting...15 Installation...16 Installation Instructions...16 Rating Plates / Terminal Assignments...16 Wiring of Stratos Pro A2... CONDI...17 Cable Preparation SE 655 / SE 656...18 Wiring Example: SE 655 / SE 656...19 Wiring Example: SE 660...20 Wiring Example: Yokogawa ISC 40...21 Wiring Example: Yokogawa IC 40S...22 Wiring Example: SE 670, SE 680...23 Connecting a SE 670 / SE 680 Sensor...25 User Interface, Keypad...26 Display...27 Signal Colors (Display Backlighting)...27 Measuring Mode...28 Selecting the Mode / Entering Values...29 Color-Coded User Interface...31 Operating Modes...32 Menu Structure of Modes and Functions...33 HOLD Mode...34 Alarm...35 Alarm and HOLD Messages...36 Generating a Message via the CONTROL Input...37 4

Contents Configuration...38 Menu Structure of Configuration...38 Manual Switchover of Parameter Sets A/B...40 Configuration (Original for Copy)...45 Sensor...48 Sensor Verification (TAG, GROUP)...54 Current Output 1...56 Current Output 2...66 Temperature Compensation...68 CONTROL Input...72 Alarm Settings...74 Time and Date...78 Measuring Points (TAG/GROUP)...78 Calibration...81 Selecting a Calibration Mode...81 Calibration with Calibration Solution...82 Product Calibration...84 Calibration by Input of Cell Factor...86 Zero Calibration in Air / with Calibration Solution...87 Temp Probe Adjustment...88 Measurement...89 Diagnostics...90 Service...95 Operating States...98 A2...X: Supply Units and Connection...100 Product Line and Accessories...101 Specifications...102 Calibration Solutions...108 Concentration Measurement...110 Concentration Curves...111 Error Handling...117 Error Messages...118 5

Contents Sensoface...120 FDA 21 CFR Part 11...122 Electronic Signature Passcodes...122 Audit Trail...122 Index...123 Trademarks...131 Passcodes...132 6

Introduction Intended Use Stratos Pro A2... CONDI is a 2-wire device for measurement of electrical conductivity and temperature in liquids using electrodeless (toroidal) sensors. Fields of application are: biotechnology, chemical industry, environment, food processing, water/wastewater treatment. Enclosure and mounting possibilities The sturdy molded enclosure is rated IP 67/NEMA 4X for outdoor use. It is made of glass-reinforced PBT / PC and measures 148 mm x 148 mm x 117 mm (H x W x D). It is provided with knockouts to allow: wall mounting (with sealing plugs to seal the enclosure), see page 13 post/pipe mounting (Ø 40 60 mm, 30 45 mm) see page 14 panel mounting (138 mm x 138 mm cutout to DIN 43700), see page 15 Protective hood (accessory) The weather protector, which is available as accessory, provides additional protection against direct weather exposure and mechanical damage, see page 14. Connection of sensors, cable glands For connecting the cables, the enclosure provides 3 knockouts for cable glands M20x1.5 2 knockouts for NPT 1/2 or rigid metallic conduit For quasi-stationary installations with Memosens sensors, we recommend using the M12 device socket (accessory ZU 0822) instead of a cable gland it allows simple replacement of the sensor cable without opening the device. Sensors The device has been designed for application with toroidal sensors, in particular for Models SE 655/656, SE 660, SE 670 and SE 680 (Knick). 7

Introduction Display Plain-text messages in a large, backlit LC display allow intuitive operation. You can specify which values are to be displayed in standard measuring mode ( Main Display, see page 30). Color-coded user interface The colored display backlighting signals different operating states (e.g., alarm: red, HOLD mode: orange, see page 31). Diagnostics functions Sensocheck automatically monitors sensor and cables and the Sensoface function clearly indicates the sensor condition, see page 120. Data logger The internal logbook (TAN SW-A002) can handle up to 100 entries up to 200 with AuditTrail (TAN SW-A003), see page 93. 2 parameter sets A, B The device provides two parameter sets which can be switched manually or via a control input for different process adaptations or different process conditions. For an overview of parameter sets (table for copy), see page 46. Password protection Password protection (passcodes) for granting access rights during operation can be configured, see page 97. TC process medium: selecting the compensation method The following temperature compensation methods are provided: linear (by entering a temperature coefficient), natural waters (nlf), ultrapure water with traces of NaCl, HCl, NH 3, NaOH, see page 68. 8

Control inputs Introduction Input + Input 5 6 Current input I input The analog (0) 4... 20 ma current input can be used for external temperature compensation (TAN required). See page 70. HOLD + HOLD 10 11 HOLD input HOLD (floating digital control input) The HOLD input can be used for external activation of the HOLD mode, see page 35. CONTROL + CONTROL 13 14 CONTROL input CONTROL (floating digital control input) The CONTROL input can be used either for parameter set selection (A/B) or for flow monitoring, see page 72. Signal outputs The device provides two current outputs (for transmission of measured value and temperature, for example). The output curve is adjustable (linear, bilinear or logarithmic), see page 56 et seq. Options Additional functions can be activated by entering a TAN (page 97). 9

Safety Information Be sure to read and observe the following safety instructions! The device has been manufactured using state of the art technology and it complies with applicable safety regulations. When operating the device, certain conditions may nevertheless lead to danger for the operator or damage to the device. See also the following documents (page 3): Safety Instructions Safety Instructions / Installation and Use in Hazardous Locations CAUTION! Commissioning must only be performed by trained personnel authorized by the operating company! Whenever it is likely that protection has been impaired, the device shall be made inoperative and secured against unintended operation. The protection is likely to be impaired if, for example: the device shows visible damage the device fails to perform the intended measurements after prolonged storage at temperatures below 30 C / 22 F or above +70 C / +158 F after severe transport stresses Before recommissioning the device, a professional routine test must be performed. This test must be carried out at the manufacturer's factory. Note: Before commissioning you must prove that the device may be connected with other equipment. 10

Overview of Stratos Pro A2... CONDI Overview receive hi receive lo A B CONDI input Output 1 8 9 send lo C send hi D Output 2 RTD (GND) E 17 RTD F RTD (Sense) G Shield H RS 485 1 2 3 4 Input + 5 Current Input 6 input HOLD + 10 HOLD HOLD 11 input CONTROL + 13 CONTROL CONTROL 14 input 11

Assembly Package Contents Check the shipment for transport damage and completeness! The package should contain: Front unit, rear unit, bag containing small parts Specific test report Documentation (cf p. 3) CD-ROM 11 10 9 1 2 3 8 7 6 5 4 Fig.: Assembling the enclosure 1) Jumper (3 x) 2) Washer (1 x), for conduit mounting: Place washer between enclosure and nut 3) Cable tie (3 x) 4) Hinge pin (1 x), insertable from either side 5) Enclosure screw (4 x) 12 6) Sealing insert (1 x) 7) Rubber reducer (1 x) 8) Cable gland (3 x) 9) Filler plug (3 x) 10) Hexagon nut (5 x) 11) Sealing plug (2 x), for sealing in case of wall mounting

Assembly Mounting Plan, Dimensions 148 117 41 14 148 42 42 42 1 21 43 2 34 80 74 6.2 3 4 1) Cable gland (3 x) 2) Knockouts for cable gland or ½ conduit, 21.5 mm dia. (2 knockouts) Conduit couplings not included! 3) Knockout for pipe mounting (4 x) 4) Knockout for wall mounting (2 x) Fig.: Mounting plan (All dimensions in mm!) 13

Assembly Pipe Mounting, Protective Hood ø40...ø60 1 2 3 1) Hose clamp with worm gear drive to DIN 3017 (2 x) 2) Pipe-mount plate (1 x) 3) For vertical or horizontal posts or pipes 4) Self-tapping screw (4 x) 4 Fig.: Pipe-mount kit, accessory ZU 0274 (All dimensions in mm!) 199 147 91 185 Fig.: Protective hood for wall and pipe mounting, accessory ZU 0737 (All dimensions in mm!) 14

Assembly Panel Mounting < 30 76 31 1) Circumferential sealing (1 x) 2) Screws (4 x) 3) Position of control panel 4) Span piece (4 x) 5) Threaded sleeve (4 x) Cutout 138 x 138 mm (DIN 43700) 5 4 1...22 3 1 2 Fig.: Panel-mount kit, accessory ZU 0738 (All dimensions in mm!) 15

Installation Installation Instructions Installation of the device must be carried out by trained experts in accordance with this user manual and as per applicable local and national codes. Be sure to observe the technical specifications and input ratings during installation! Be sure not to notch the conductor when stripping the insulation! The supplied current must be galvanically isolated. If not, connect an isolator module. All parameters must be set by a system administrator prior to commissioning! Terminals: suitable for single wires / flexible leads up to 2.5 mm 2 (AWG 14) Rating Plates / Terminal Assignments Fig.: Terminal assignments of Stratos Pro A2... Fig.: Stratos Pro A2...N rating plate at outside bottom of front 16

Wiring of Stratos Pro A2... CONDI Installation Sensor connection MK-CONDI module Areas for placing the screwdriver to pull out the terminals 1 9 10 18 Terminal row 1 Terminal row 2 Fig.: MK-CONDI module terminal assignments In addition: 2 HART pins (between terminal row 1 and 2) Fig.: Terminals, device opened, back of front unit 17

Cable Preparation SE 655 / SE 656 Preparing the shield connection Pre-assembled special cable for SE 655 / SE 656 sensors Insert the special cable through the cable entry into the terminal compartment. Remove the already separated part of the cable insulation (1). 3 Turn the shielding mesh (2) over the cable insulation (3). 4 Then shift the crimp ring (4) over the shielding mesh and tighten it using a pince (5) The pre-assembled special cable: Coax RD Coax WH BU RD RD BU GN WH YE GN/YE 18

Wiring Example: SE 655 / SE 656 Measuring task: Sensors: Conductivity, temperature SE 655/SE 656 sensor Connecting the pre-assembled cable receive hi Blue A receive lo Coax red Red send lo send hi RTD (GND) RTD RTD (sense) shield B C D E F G H Red Coax white Blue Green White Yellow Shield Green/yellow Cable Device 19

Wiring Example: SE 660 Measuring task: Sensor: Conductivity, temperature SE 660 sensor receive hi Blue A receive lo Coax red Red send lo send hi RTD (GND) RTD RTD (sense) shield B C D E F G H Red Coax black Blue Green White Yellow Shield Green/yellow Cable Device 20

Wiring Example: Yokogawa ISC 40 Measuring task: Conductivity, temperature Sensor: Yokogawa ISC40 (Pt 1000) receive hi receive lo send lo send hi RTD (GND) RTD RTD (sense) shield A B C D E F G H Jumper! Black Black Blue Red Black Coax BN Coax WH Cable Device Configuration settings for this sensor: Conductivity, temperature Sensor: 21

Wiring Example: Yokogawa IC 40S Measuring task: Conductivity, temperature Sensor: Yokogawa IC40S (NTC 30k) receive hi receive lo send lo send hi RTD (GND) RTD RTD (sense) shield A B C D E F G H Black Black Blue Red Black Coax BN Coax WH Cable Device Configuration settings for this sensor: Conductivity, temperature Sensor: Approx. 1.7 22

Wiring Example: SE 670, SE 680 Measuring task: Conductivity, temperature Sensor: SE 670 NOTICE! Connection to RS-485 interface! Remove the measuring module. Sensor Brown Green Yellow White Transparent Cable Device The SE 670 / SE 680 sensors are connected to the RS-485 interface of the device for an A2... Series (2-wire) device, the measuring module slot must be empty. Therefore, first remove the measuring module from the slot (see next page). When the sensor model SE 670 / SE 680 is selected in the Configuration menu, the default values are taken as calibration data. They can then be modified by calibration. All calibration data of the SE 680-M sensor with Memosens protocol are stored in the sensor. 23

24

Connecting a SE 670 / SE 680 Sensor NOTICE! The slot for the MK-CONDI module must be empty be sure to remove the module! Areas for placing the screwdriver to pull out the terminals 1 9 10 18 Connection of SE 670 / SE 680: Wire color Brown Green Yellow White, transparent shield 25

MEMO SENS User Interface, Keypad 1 2 1 Display 2 Keypad 3 Rating plate (enclosure bottom) 3 Key Arrow keys up / down Arrow keys left / right Function Return to last menu level Directly to measuring mode (press > 2 s) Measuring mode: other display Retrieve information Show error messages Configuration: Confirm entries, next configuration step Calibration: Continue program flow Measuring mode: Call menu Menu: Increase/decrease a numeral Menu: Selection Previous/next menu group Number entry: Move between digits 26

1 2 3 4 5 6 7 8 9 10 11 Display 23 MEMO SENS 12 13 14 24 15 16 22 21 20 19 18 17 1 Temperature 13 Info available 2 Sensocheck 14 Hold mode active 3 Interval/response time 15 Main display 4 Sensor data 16 Secondary display 5 Not used 17 Proceed using enter 6 Limit message: 18 Not used Limit 1 or Limit 2 19 Diagnostics 7 Alarm 20 Configuration mode 8 Service 21 Calibration mode 9 Parameter set 22 Measuring mode 10 Calibration 23 Sensoface 11 Memosens 24 Unit symbols 12 Waiting time running Signal Colors (Display Backlighting) Red Red blinking Orange Turquoise Green Magenta Alarm (in case of fault: display values blink) Input error: illegal value or wrong passcode HOLD mode (Calibration, Configuration, Service) Diagnostics Info Sensoface message 27

Measuring Mode After the operating voltage has been connected, the analyzer automatically goes to Measuring mode. To call the measuring mode from another operating mode (e.g. Diagnostics, Service): Hold meas key depressed (> 2 s). Sensoface indicator (sensor status) Time (or flow) Mode indicator (measuring) Hold meas key depressed for calling the measuring mode (pressing once more switches the display) Active parameter set (configuration) Display indicates OUT1: e.g. process variable Display indicates OUT2: e.g. temperature enter key Depending on the configuration, one of the following displays can be set as standard display for the measuring mode (see page 30): Measured value, time and temperature (default setting) Measured value and selection of parameter set A/B or flow Measured value and measuring point ( TAG ) Time and date Note: By pressing the meas key in measuring mode you can view the displays for approx. 60 sec. 28 You must configure the device for the respective measurement task!

Selecting the Mode / Entering Values To select the operating mode: 1) Hold meas key depressed (> 2 s) (directly to measuring mode) 2) Press menu key: the selection menu appears 3) Select operating mode using left / right arrow key 4) Press enter to confirm the selected mode 1 Selection menu Selected mode (blinks) 4 3 2 To enter a value: 5) Select numeral: left / right arrow key 6) Change numeral: up / down arrow key 7) Confirm entry by pressing enter 5 7 6 29

Display in Measuring Mode The MAIN DISPLAY is the display which is shown in measuring mode. To call the measuring mode from any other mode, hold the meas key depressed for at least 2 sec. meas key enter key meas meas By pressing meas briefly you can step through further displays such as tag number (TAG) or flow (L/h). These displays are turquoise. After 60 sec they switch back to the main display. enter approx. 2 s Press enter to select a display as MAIN DISPLAY the secondary display shows MAIN DISPLAY NO. Use the UP / DOWN arrow keys to select MAIN DISPLAY YES and confirm by pressing enter. The display color changes to white. This display is now shown in measuring mode. 30

Color-Coded User Interface The color-coded user interface guarantees increased operating safety. Operating modes are clearly signaled. The normal measuring mode is white. Information text appears on a green screen and the diagnostic menu appears on turquoise. The orange HOLD mode (e.g. during calibration) is quickly visible as is the magenta screen which indicates asset management messages for predictive diagnostics such as maintenance request, pre-alarm and sensor wear. The alarm status has a particularly noticeable red display color and is also signaled by flashing display values. Invalid inputs or false passcodes cause the entire display to blink red so that operating errors are noticeably reduced. White: Measuring mode Red blinking: Alarm, errors Orange: HOLD mode Magenta: Maintenance request Turquoise: Diagnostics Green: Information texts 31

Operating Modes Diagnostics Display of calibration data, display of sensor data, performing a device self-test, viewing the logbook entries, display of hardware/software versions of the individual components. The logbook can store 100 events (00...99). They can be displayed directly on the device. The logbook can be extended to 200 entries using a TAN (Option). HOLD Manual activation of HOLD mode, e.g. for servicing. The signal outputs adopt a defined state. Calibration Every sensor has typical characteristic values. Calibration is required to supply a correct measured value. The device checks which value the sensor delivers when measuring in a known solution. When there is a deviation, the device can be adjusted. In that case, the device displays the actual value and internally corrects the measurement error of the sensor. During calibration the device is in HOLD mode. During calibration the device remains in the HOLD mode until it is stopped by the operator. Configuration The analyzer must be configured for the respective measurement task. In the Configuration mode you select the connected sensor, the measuring range to be transmitted, and the conditions for warning and alarm messages. During configuration the device is in HOLD mode. Configuration mode is automatically exited 20 minutes after the last keystroke. The device returns to measuring mode. Service Maintenance functions (current source), passcode assignment, reset to factory settings, enabling of options (TAN). 32

Menu Structure of Modes and Functions Meas. mode (main display selectable) TAG display after 60 s CLK display after 60 s (Access via code, factory setting: 5555) Pressing the menu key (down arrow) opens the selection menu. Select the menu group using the left/right arrow keys. Pressing enter opens a menu item. Press meas to return. Display of calibration data Display of sensor data Self test: RAM, ROM, EEPROM, module Logbook: 100 events with date and time Display of direct, uncorrected sensor signals Display of software version, model designation, serial number Manual activation of HOLD mode, e.g. for sensor replacement. The signal outputs behave as configured (e.g. last measured value, 21 ma) Calibration with calibration solution Calibration by input of cell factor Zero calibration Product calibration Adjustment of temperature probe Configuring parameter set A Configuring parameter set B Display of measured values for validation (simulators) Current source, output 1 Current source, output 2 Specifying access codes for operating modes Reset to factory setting Enabling an option via TAN 33

HOLD Mode The HOLD mode is a safety state during configuration and calibration. Output current is frozen (LAST) or set to a fixed value (FIX). The HOLD mode is indicated by orange display backlighting. HOLD mode, display icon: Output signal response LAST: The output current is frozen at its last value. Recommended for short configuration procedures. The process should not change decisively during configuration. Changes are not noticed with this setting! FIX: The output current is set to a value that is noticeably different from the process value to signal the control system that the device is being worked at. Output signal during HOLD: Output current [ma] 21 Output signal for HOLD FIX setting = 21.0 ma Output signal for HOLD LAST setting 4 HOLD active HOLD active Terminating the HOLD mode The HOLD mode is ended by switching to measuring mode (hold meas key depressed). The display reads Good Bye, after that, the HOLD mode is exited. When the calibration mode is exited, a confirmation prompt ensures that the installation is ready for operation (e.g.: sensor reinstalled, located in process). 34

Alarm External activation of HOLD (SW-A005) The HOLD mode can be activated from outside by sending a signal to the HOLD input (e.g. from the process control system). Power supply 12...24 V AC/DC HOLD 10 11 input Stratos Pro A2... Process control system HOLD inactive HOLD active 0...2 V AC/DC 10...30 V AC/DC Manual activation of HOLD The HOLD mode can be activated manually from the HOLD menu. This allows checking or replacing a sensor, for example, without provoking unintended reactions at the outputs. Press meas key to return to selection menu. Alarm When an error has occurred, Err xx is displayed immediately. Only after expiry of a user-defined delay time will the alarm be registered and entered in the logbook. During an alarm the display blinks, the display backlighting turns red. Error messages can also be signaled by a 22 ma output current (see Configuration). 2 sec after the failure event is corrected, the alarm status will be deleted. 35

Alarm and HOLD Messages Message Released by Cause Alarm Sensocheck Polarization / Cable (22 ma) Error Messages Flow (CONTROL input) ERR 10: Conductance > 3500 ms HOLD HOLD via menu or input (Last/Fix) Configuration Calibration Service 36

Alarm and HOLD Messages Generating a Message via the CONTROL Input (min. flow / max. flow) The CONTROL input can be used for parameter set selection or for flow measurement (pulse principle), depending on its assignment in the Configuration menu. When preset to flow measurement an alarm can be generated when the measured flow exceeds a specified range: (specify value, default: 5 liters/h) (specify value, default: 25 liters/h) Power supply 12...24 V AC/DC 13 14 CONTROL input 37

Configuration Menu Structure of Configuration The device provides 2 parameter sets A and B. By switching between the parameter sets you can adapt the device to different measurement situations, for example. Parameter set B only permits setting of process-related parameters. The configuration steps are assigned to different menu groups. With the left/right arrow keys you can jump between the individual menu groups. Each menu group contains menu items for setting the parameters. Pressing enter opens a menu item. Use the arrow keys to edit a value. Press enter to confirm/save the settings. Return to measurement: Hold meas key depressed (> 2 s). Select menu group Menu group Code Display Sensor selection Menu item 1 Select menu item... Current output 1 Current output 2 Compensation Control input (parameter set or flow measurement) Alarm mode Setting the clock Measuring point Menu item... 38

Configuration Parameter set A/B: configurable menu groups The device provides 2 parameter sets A and B. By switching between the parameter sets you can adapt the device to different measurement situations, for example. Parameter set B only permits setting of process-related parameters. Menu group Parameter set A Parameter set B Sensor selection --- Current output 1 Current output 1 Current output 2 Current output 2 Compensation Compensation Control input --- Alarm mode Alarm mode Parameter set selection --- Setting the clock --- TAG TAG of measuring point --- GROUP GROUP of measuring points --- External switchover of parameter sets A/B You can switch between parameter sets A and B by applying a signal to the CONTROL input (parameter setting: ). Max. 30 V AC/DC 13 CONTROL 14 input e.g. process control system Stratos Pro A2... Parameter set A active Parameter set B active 0...2 V AC/DC 10...30 V AC/DC 39

Configuration Manual Switchover of Parameter Sets A/B Display Action Remark To switch between Manual selection of parameter sets: parameter sets must have been preset in CONFIG Press meas. mode. Default setting is a fixed parameter set A. Wrong settings change the measurement properties! PARSET blinks in the lower line. Select parameter set using and keys Select PARSET A / PARSET B Press enter to confirm. Cancel by pressing meas 40

Configuration Configuration Choices Default Sensor (SENSOR) SNS: SE 655, SE 656 SE 660, SE 670, SE680-K, SE680-M MEMOSENS OTHER SE 655 OTHER RTD TYPE 100PT / 1000PT / 1000PT 30 NTC CELL FACTOR XX.XXx 01.980 TRANS RATIO XXX.Xx 120.0 MEAS MODE Cond Conc % Sal Cond Cond MEAS RANGE xxx.x μs/cm x.xxx ms/cm x.xxx ms/cm xx.xx ms/cm xxx.x ms/cm x.xxx S/m xx.xx S/m Conc Solution -01- (NaCl) -01- (NaCl) -02- (HCl) -03- (NaOH) -04- (H2SO4) -05- (HNO3) -06- (H2SO4) -07- (HCl) -08- (HNO3) -09- (H2SO4) -10- (NaOH) TEMP UNIT C / F C CIP COUNT ON/OFF OFF ON 0... 9999 CYCLES SIP COUNT ON/OFF OFF ON 0... 9999 CYCLES CHECK TAG ON/OFF OFF CHECK GROUP ON/OFF OFF 41

Configuration Configuration Choices Default Output 1 (OUT1) OT1: Channel Cond/TMP Cond Output LIN / BiLIN / LOG LIN LIN BEGIN 4mA xxxx 000.0 ms/cm END 20 ma xxxx 100.0 ms/cm BiLIN BEGIN 4 ma END 20 ma CORNER X Input range: selected CHANNEL Vertex X : BEGIN CORNER X END (rising) BEGIN CORNER X END (falling) CORNER Y Input range: selected CHANNEL Default: 12 ma Vertex Y: (0) 4 ma CORNER Y 20 ma LOG BEGIN (0) 4mA Decades END 20 ma Decades TMP BEGIN (0) 4mA 50...250 C C END 20 ma 50...250 C TMP F BEGIN (0) 4mA 58...482 F END 20 ma 58...482 F FILTERTIME 0...120 SEC 0000 SEC 22mA FAIL ON/OFF OFF 22mA FACE ON/OFF OFF HOLD MODE LAST/FIX LAST FIX HOLD-FIX 4...22 ma 021.0 ma Monitoring the sensor lines for breakage The sensor lines are monitored for breakage when the temperature is used for calculating the conductivity or concentration. If the sensor or line is broken, an alarm will be generated (output current FIX or 22 ma, depending on the configuration). If you want to output a conductivity value that is independent of the measured temperature (uncompensated), you can monitor the sensor lines for breakage by setting TEMP CHECK to ON in the Alarm menu. (See following page, ALARM menu) 42

Configuration Configuration Choices Default Output 2 (OUT2)... other steps like output 1 Temperature compensation (CORRECTION) Compensation for ultrapure water: NaCl, HCL, NH3 LIN TC LIQUID 00.00...19.99%/K 00.00%/K REF TEMP 000.0... 199.9 C 025.0 C I-INPUT (only with TEMP EXT selected The I-input option must be enabled via TAN) I-INPUT 0 20 ma / 4 20 ma 4...20 ma C BEGIN 4 ma 50...250 C 000.0 C END 20 ma 50...250 C 100.0 C F BEGIN 4 ma 58...482 F END 20 ma 58...482 F Control input (CNTR_IN) IN: CONTROL Parameter-set switchover (PARSET) or flow measurement (FLOW) PARSET FLOW FLOW ADJUST 12000 pulses/liter 0... 20000 pulses/liter Alarm (ALARM) ALA: DELAYTIME 0...600 SEC 0010 SEC SENSOCHECK ON/OFF OFF TEMP CHECK ON/OFF OFF FLOW CNTR *) ON/OFF OFF ON FLOW MIN **) 005.0 L/h 0... 99.9 L/h FLOW MAX **) 025.0 L/h 0... 99.9 L/h *) These menu items appear only if selected. **) Hysteresis fixed at 5% of threshold value 43

Configuration Configuration Choices Default Parameter set (PARSET) Select fixed parameter set (A) or switch between A/B via control input or manually in measuring mode Real-time clock (CLOCK) CLK: FORMAT 24 h / 12 h 24 h TIME hh/mm 00..23:00...59 12 h TIME hh/mm 00... 12:59 AM / 01... 11:59 PM DAY/MONTH 01...31/01...12 YEAR 2000...2099 Measuring points (TAG / GROUP) TAG: (Input in text line) A...Z, 0...9, + < >? / @ GROUP: (Input in text line) 0000...9999 0000 (fixed parameter set A) Sensor Verification (TAG, GROUP) When Memosens sensors are calibrated in the lab, it is often useful and sometimes even mandatory that these sensors will be operated again at the same measuring points or at a defined group of measuring points. To ensure this, you can save the respective measuring point (TAG) or group of measuring points (GROUP) in the sensor. TAG and GROUP can be specified by the calibration tool or automatically entered by the transmitter. When connecting an MS sensor to the transmitter, it can be checked if the sensor contains the correct TAG or belongs to the correct GROUP. If not, a message will be generated, Sensoface gets sad, and the display backlighting turns purple. The sad Sensoface icon can also be signaled by a 22 ma error current. Sensor verification can be switched on in the Configuration in two steps as TAG and GROUP if required. When no measuring point or group of measuring points is saved in the sensor, e.g., when using a new sensor, Stratos enters its own TAG and GROUP. When sensor verification is switched off, Stratos always enters its own measuring point and group. A possibly existing TAG/GROUP will be overwritten. 44

Configuration (Original for Copy) Two complete parameter sets are stored in the EEPROM. As delivered, the two sets are identical but can be edited. Note: Fill in your configuration data on the following pages or use them as original for copy. 45

Configuration (Original for Copy) Parameter Parameter set A Parameter set B SNS: Sensor type SNS: RTD type SNS: Cell factor SNS: Transfer ratio SNS: Measuring mode SNS: Measuring range SNS: Concentration determination SNS: Temperature unit SNS: CIP counter SNS: SIP counter SNS: CHECK TAG SNS: CHECK GROUP OT1: Process variable OT1: Lin/bilin/log output OT1: Current start OT1: Current end OT1: Vertex X (bilinear curve only) OT1: Vertex Y (bilinear curve only) OT1: Filter time OT1: FAIL 22 ma (error messages) OT1: FACE 22 ma (Sensoface messages) OT1: HOLD mode OT1: HOLD FIX current 46

Configuration (Original for Copy) Parameter Set A Set B OT2: Process variable OT2: Lin/bilin/log output OT2: Current start OT2: Current end OT2: Vertex X (bilinear curve only) OT2: Vertex Y (bilinear curve only) OT2: Filter time OT2: FAIL 22 ma (error messages) OT2: FACE 22 ma (Sensoface messages) OT2: HOLD mode OT2: HOLD FIX current COR: TC SELECT COR: Temp coefficient COR: Reference temperature COR: Current range COR: Current start COR: Current end IN: Parameter set A/B or flow IN: (Flow meter) Adjusting pulses/liter ALA: Delay ALA: Sensocheck on/off ALA: Tempcheck on/off ALA: Flow control FLOW CNTR on/off ALA: Minimum flow (hysteresis fixed at 5 %) ALA: Maximum flow (hysteresis fixed at 5 %) CLK: Time & Date TAG: Measuring point (tag number) GROUP: Group of measuring points *) These parameters cannot be adjusted in parameter set B, the values are the same as in parameter set A. 47

Configuration Sensor Select: Sensor type, temperature probe, cell factor, transfer ratio, measuring mode, range 1) Press menu key. 2) Select CONF using, press enter. 3) Select parameter set using keys, press enter. 4) Select SENSOR menu using keys, press enter. 5) All items of this menu group are indicated by the SNS: code. Press enter to select menu, edit using arrow keys (see next page). Confirm (and proceed) by pressing enter. 6) Exit: Press meas key until the [meas] mode indicator is displayed. 5 6 Sensor type Temperature probe Cell factor Transfer ratio Measuring mode Measuring range Concentration determination Temperature unit Cleaning cycles Sterilization cycles CHECK TAG CHECK GROUP 5 48

5 Menu item Action Choices Sensor type Select sensor type using keys. Press enter to confirm. Configuration SE 655 SE 656, SE 660 SE 670, SE 680-K, SE 680-M, MEMOSENS, OTHER Temperature probe Cell factor Only with OTHER: Select type of temperature probe using keys. Press enter to confirm. Enter cell factor using keys. Press enter to confirm. 1000PT 100PT 30 NTC 01.980 XX.XXx Transfer ratio Enter transfer ratio using keys. Press enter to confirm. 120.00 XXX.Xx Measuring mode Select desired measuring mode using keys. Press enter to confirm. Cond Conc % Sal Measuring range For cond measurement only Select desired range using keys. Press enter to confirm. x.xxx ms/cm, xx.xx ms/cm xxx.x ms/cm, x.xxx S/m xx.xx S/m 49

Configuration Sensor Select: Concentration determination, temperature unit 1) Press menu key. 2) Select CONF using keys, press enter. 3) Select parameter set using, press enter. 4) Select SENSOR menu using keys, press enter. 5) All items of this menu group are indicated by the SNS: code. Press enter to select menu, edit using arrow keys (see next page). Confirm (and proceed) using enter. 6) Exit: Press meas key until the [meas] mode indicator is displayed. 5 6 Sensor type Temperature probe Cell factor Transfer ratio Measuring mode Measuring range Concentration determination Temperature unit Cleaning cycles Sterilization cycles CHECK TAG CHECK GROUP 5 50

5 Menu item Action Choices Concentration For conc measurement determination only Temperature unit Select desired concentration solution using (see appendix for ranges). Press enter to confirm. Select C or F using keys. Configuration -01- (NaCl) -02- (HCl) -03- (NaOH) -04- (H 2 SO 4 ) -05- (HNO 3 ) -06- (H 2 SO 4 ) -07- (HCl) -08- (HNO 3 ) -09- (H 2 SO 4 ) -10- (NaOH) C / F Press enter to confirm. 51

Configuration Sensor (ISM and Memosens only) Adjust: Cleaning cycles, sterilization cycles 1) Press menu key. 2) Select CONF using keys, press enter. 3) Select parameter set using, press enter. 4) Select SENSOR menu using keys, press enter. 5) All items of this menu group are indicated by the SNS: code. Press enter to select menu, edit using arrow keys (see next page). Confirm (and proceed) using enter. 6) Exit: Press meas key until the [meas] mode indicator is displayed. 5 6 Select sensor type Select temp probe Select cell factor Select transfer ratio Select measuring mode Select range Concentration determination Temperature unit Cleaning cycles Sterilization cycles CHECK TAG CHECK GROUP 5 52

5 Menu item Action Choices CIP / SIP (ISM and Memosens only) Cleaning cycles on/off Select ON or OFF using keys. Activates/deactivates logging in extended logbook Press enter to confirm. Configuration ON/OFF Sterilization cycles on/off Select ON or OFF using keys. Activates/deactivates logging in extended logbook Press enter to confirm. ON/OFF The cleaning and sterilization cycles are logged to measure the load on the sensor. Suitable for biochemical applications (process temp approx. 0... +50 C / +32... +122 F, CIP temp > +55 C / +131 F, SIP temp > +115 C / +239 F). Note: A CIP or SIP cycle is only entered into the logbook 2 hours after the start to ensure that the cycle is complete. With Memosens (e.g., SE680-M), an entry is also made in the sensor. 53

Configuration Memosens Sensor Sensor Verification (TAG, GROUP) 1 2 enter 3 1) Press menu key. 2) Select CONF using, press enter. 3) Select parameter set using keys, press enter. 4) Select SENSOR menu using keys, press enter. 5) All items of this menu group are indicated by the SNS: code. Press enter to select menu, edit using arrow keys (see next page). Confirm (and proceed) by pressing enter. 6) Exit: Press meas key until the [meas] mode indicator is displayed. enter 4 enter 5 meas 6 Select sensor type Select temp probe Select cell factor Select transfer ratio Select measuring mode Select range Concentration determination Temperature unit Cleaning cycles Sterilization cycles CHECK TAG CHECK GROUP 5 54

5 Menu item Action Choices TAG ON/OFF Select ON or OFF using keys. Press enter to confirm. Configuration GROUP When switched on, the entry for TAG in the Memosens sensor is compared to the entry in the analyzer. If the entries differ, a message will be generated. Select ON or OFF using keys. Press enter to confirm. Function as described above ON/OFF Sensor Verification (TAG, GROUP) When Memosens sensors are calibrated in the lab, it is often useful and sometimes even mandatory that these sensors will be operated again at the same measuring points or at a defined group of measuring points. To ensure this, you can save the respective measuring point (TAG) or group of measuring points (GROUP) in the sensor. TAG and GROUP can be specified by the calibration tool or automatically entered by the transmitter. When connecting an MS sensor to the transmitter, it can be checked if the sensor contains the correct TAG or belongs to the correct GROUP. If not, a message will be generated, Sensoface gets sad, and the display backlighting turns purple. The sad Sensoface icon can also be signaled by a 22 ma error current. Sensor verification can be switched on in the Configuration in two steps as TAG and GROUP if required. When no measuring point or group of measuring points is saved in the sensor, e.g., when using a new sensor, Stratos enters its own TAG and GROUP. When sensor verification is switched off, Stratos always enters its own measuring point and group. A possibly existing TAG/GROUP will be overwritten. 55

Configuration Current Output 1 Output current range. Linear/Logarithmic. Current start. 1) Press menu key. 2) Select CONF using keys, press enter. 3) Select parameter set using, press enter. 4) Select OUT1 menu using keys, press enter. 5) All items of this menu group are indicated by the OT1: code. Press enter to select menu, edit using arrow keys (see next page). Confirm (and proceed) using enter. 6) Exit: Press meas key until the [meas] mode indicator is displayed. 5 Process variable LIN/biLIN/LOG output Current start Current end Time averaging filter Output current for error message Output current for Sensoface Output current during HOLD Output current for HOLD FIX 5 enter 6 56

5 Menu item Action Remark Process variable Select using keys: Cond: Conductivity TMP: Temperature Press enter to confirm. Then select characteristic (LIN/biLIN/LOG). Configuration Selectable decades with logarithmic setting (LOG): S/cm: 0.001 ms/cm, 0.01 ms/cm, 0.1 ms/cm, 1.0 ms/cm, 10.0 ms/ cm, 100.0 ms/cm, 1000 ms/cm S/M: 0.001 S/m, 0.01 S/m, 0.1 S/m, 1.0 S/m, 10.0 S/m, 100 S/m Current start Current end Modify digit using keys, select next digit using keys. Press enter to confirm. Enter value using keys. Press enter to confirm. Entered value applies to selected process variable/ range If the adjusted range is exceeded, the device automatically switches to the next higher range (Autorange) Entered value applies to selected process variable/ range If the adjusted range is exceeded, the device automatically switches to the next higher range (Autorange) Assignment of measured values: Current start and current end Example 1: Range 0...200 ms/cm Example 2: Range 100...200 ms/cm [ms/cm] Advantage: Higher resolution in range [ms/cm] of interest 200 200 100 0 4 Output current 20 [ma] 100 4 Output current 20 [ma] 57

Configuration Current Output 1 Output current curve, bilinear 1) Press menu key. 2) Select CONF using keys, press enter. 3) Select parameter set using, press enter. 4) Select OUT1 menu using keys, press enter. 5) All items of this menu group are indicated by the OT1: code. Press enter to select menu, edit using arrow keys (see next page). Confirm (and proceed) using enter. 6) Exit: Press meas key until the [meas] mode indicator is displayed. 5 6 Process variable LIN/biLIN/LOG output Current start Current end Bilinear: Vertex X Bilinear: Vertex Y Time averaging filter Output current for error message Output current for Sensoface Output current during HOLD Output current for HOLD FIX 5 enter 58

5 Configuration Menu item Action Choices Output current Select using keys. LIN curve Press enter to confirm. Linear characteristic bilin Bilinear curve LOG Logarithmic curve Current start and current end Bilinear curve: Vertex X/Y Enter value using keys. Press enter to confirm. Enter value using keys. Press enter to confirm. Entered value applies to selected process variable/ range If the adjusted range is exceeded, the device automatically switches to the next higher range (Autorange) Entered value applies to selected vertex of bilinear curve "Corner X (process variable) and "Corner Y (output current) see figure below. Vertex of bilinear curve Output current Example: Current range 4... 20 ma, Current start: 0 µs/cm Current end: 200 µs/cm Vertex: "CORNER X : 10 µs/cm (process variable) "CORNER Y : 12 ma (output current) Result: The output current change in the range 0... 10 µs/cm is much greater than in the range 10... 200 µs/cm. Process variable 59

Logarithmic Curve Nonlinear output current characteristic: allows measurements over several decades, e.g. measuring very low values with a high resolution and high values with a low resolution. Parameters required: Start and end value Possible start and end values The start value must be at least one decade lower than the end value. Start value and end value must be specified in the same units (either in µs/cm or in S/m, see listing): 0.001 ms/cm 0.001 S/m 0.01 ms/cm 0.01 S/m 0.1 ms/m 0.1 S/m 1.0 S/m 10.0 S/m 100 S/m The start value is the next decade value below the lowest measured value. The end value is the next decade value above the highest measured value. The number of decades results from: Number of decades = log (end value) log (start value) The output current value is defined as follows: Output current = log(measured value) log(start value) Number of decades Measured values Start value 60 End value Decades

5 Configuration Menu item Action Choices Logarithmic curve Select using keys. LOG of output current Press enter to confirm. Logarithmic curve bilin Bilinear curve Start value Enter value using keys. LIN Linear characteristic Start value of logarithmic output curve End value Press enter to confirm. Enter value using keys. End value of logarithmic output curve Press enter to confirm. Possible start and end values for the logarithmic curve S/cm: S/m: 61

Configuration Current Output 1 Adjusting the time interval of the output filter 1) Press menu key. 2) Select CONF using keys, press enter. 3) Select parameter set using, press enter. 4) Select OUT1 menu using keys, press enter. 5) All items of this menu group are indicated by the OT1: code. Press enter to select menu, edit using arrow keys (see next page). Confirm (and proceed) using enter. 6) Exit: Press meas key until the [meas] mode indicator is displayed. 5 Process variable LIN/biLIN/LOG output Current start Current end Time averaging filter Output current for error message Output current for Sensoface Output current during HOLD Output current for HOLD FIX 5 enter 6 62

5 Menu item Action Choices Time averaging filter Enter value using keys. Configuration 0...120 SEC (0000 SEC) Press enter to confirm. Time averaging filter To smoothen the current output, a low-pass filter with adjustable filter time constant can be switched on. When there is a jump at the input (100 %), the output level is at 63 % after the time interval has been reached. The time interval can be set from 0 to 120 sec. If the time interval is set to 0 sec, the current output directly follows the input. Note: The filter only acts on the current output, not on the display or the limit value! During HOLD the filter is not applied. This prevents a jump at the output. Display COND Time interval 0...120 s 0/4-20 ma TMP Time interval 0...120 s 63