technical datasheet technical datasheet MTL660 Displays Loop-powered indicators for hazardous areas

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1 technical datasheet technical datasheet MTL0 Displays Loop-powered indicators for hazardous areas Loop powered -0mA Field and panel mounting Environmental protection to IP7 Easy to configure Number of displayed digits configurable Backlight options Zone mounting The MTL, MTL, MTL and MTL digital indicators enable process variables to be displayed locally in hazardous and general purpose plant areas. A typical example would be the re-transmission of mass/flow computations from the safe area, through a suitable MTL IS interface to the indicator in the hazardous area. The displays are loop powered from the -0mA process signal and their low voltage drop allows them to be installed in almost any -wire, 0mA transmitter loop. All units can indicate measured values in a linear or a square root extraction mode; the latter being used, for example, to display flow from differential pressure measurement devices such as orifice plates, Dall tubes, or venturi. The MTL Field mounting unit is housed in a tough aluminium enclosure, suitable for wall or pipe mounting. For corrosive atmospheres use the MTL - the plastic case provides excellent resistance to harmful contaminents. The MTL is the panel mounted version and is IP, IP, IP7 and NEMA rated. MTLx IS indicators are classified as non-energy storing simple apparatus so they can be inserted into any IS loop without recertification. For Zone mounting, without the need for an IS barrier or isolator, the MTL-NA and MTL-NA are available. EPS0 RevH 07 enquiry@mtl-inst.com

2 MTL, MTL & MTL I.S. INDICATORS loop powered backlight 'B' option The MTLx range offers a variety of field and panel mounting IS indicators to display the current flowing in a 0mA loop. The small voltage drop of <V allows the loop powered display to be installed in almost any 0mA loop. The -NA versions permit mounting in Zone without an IS barrier or isolator. Configuration is carried out using the front panel switches (which can be password protected). Range units, upper and lower limits, decimal point positioning and number of digits displayed are all configured via the front panel. SPECIFICATION Unit location Zone 0, IIC, T hazardous area Display ½ digits - mm height (process value) Eleven 8mm digits (process units & current) Voltage requirements under all conditions <V, loop powered Ambient Temperature Operating: C to 70 C Storage: 0 C to 80 C Humidity -99%RH Input range -0mA Over-range 00mA maximum without damage Display Range to (Configurable) Number of digits after decimal point configurable Zero and span Setting: anywhere in range Scale direction Normal or reverse: software selected. Out of range indication "----- RANGE ERROR" displayed between. -.7mA "99999 RANGE ERROR" displayed at current >ma Operating modes Linear or square root extraction is software selectable. Accuracy at 0 C ± 0.0mA Effects of temperature on accuracy Zero: ± 0.00% of span / C Span: ± 0.0% of span / C Ripple rejection <0.0mA error with ma peak to peak ripple at 0Hz Electrical safety The input circuit of the indicator is designed such that it does not influence the intrinsically safe circuit to which it is connected. (In the USA the application is covered by the entity concept.) Input circuit (terminals & ) in type of explosion protection intrinsically safe Ex ia IIC, with the following parameters: Ui=0V, Ii=00mA, Pi=.W, Ci=0nF, Li=0mH only for connection to a certified intrinsically safe circuit not exceeding these values. Backlight (see Ordering Information & final page for details) Separately powered backlight from an IS power source (U o = 8V, I o = 00mA, P o = 0.9W max.) Dimensions See final page ordering information When ordering a MTL, MTL or MTL, use one of the following order codes to uniquely specify your requirement. Order code Type Backlight material Showing backlight Weight (nom.) style MTL Field No Aluminium 8g A MTLB Field Yes Aluminium 8g A MTL-NA Field No Aluminium 8g A MTLB-NA Field Yes Aluminium 8g A MTL Panel No Aluminium g B MTLB Panel Yes Aluminium g B MTL-NA Panel No Aluminium g B MTLB-NA Panel Yes Aluminium g B MTL Field No GRP 00g A MTLB Field Yes GRP 00g A The given data is only intended as a product description and should not be regarded as a legal warranty of properties or guarantee. In the interest of further technical developments, we reserve the right to make design changes. EUROPE (EMEA): (0)8 7 THE AMERICAS: ASIA-PACIFIC: 9888 enquiry@mtl-inst.com csinfo@mtl-inst.com sales.mtlsing@cooperindustries.com EPS0 RevH 07

3 MTL I.S. INDICATOR loop powered backlight 'B' option The MTL is a DIN-standard, panel mounting, IS indicator to display the current flowing in a 0mA loop. The small voltage drop of <V allows the loop powered display to be installed in almost any 0mA loop. Configuration is carried out using the front panel switches (which can be password protected). Range units, upper and lower limits, decimal point positioning and number of digits displayed are all configured via the front panel. SPECIFICATION Unit location Zone 0, IIC, T hazardous area Display ½ digits - mm height (process value) Eleven 8mm digits (process units & current) Voltage requirements under all conditions <V, loop powered Ambient Temperature Operating: C to 70 C Storage: 0 C to 80 C Humidity -99%RH Input range -0mA Over-range 00mA maximum without damage Display Range to (Configurable) Number of digits after decimal point configurable Zero and span Setting: anywhere in range Scale direction Normal or reverse: software selected. Out of range indication "----- RANGE ERROR" displayed between. -.7mA "99999 RANGE ERROR" displayed at current >ma Operating modes Linear or square root extraction is software selectable. Accuracy at 0 C ± 0.0mA Effects of temperature on accuracy Zero: ± 0.00% of span / C Span: ± 0.0% of span / C Ripple rejection <0.0mA error with ma peak to peak ripple at 0Hz Electrical safety The input circuit of the indicator is designed such that it does not influence the intrinsically safe circuit to which it is connected. (In the USA the application is covered by the entity concept.) Input circuit (terminals & ) in type of explosion protection intrinsically safe Ex ia IIC, with the following parameters: Ui=0V, Ii=00mA, Pi=.W, Ci=0nF, Li=0mH only for connection to a certified intrinsically safe circuit not exceeding these values. Backlight (see Ordering Information & final page for details) Separately powered backlight from an IS power source (U o = 8V, I o = 00mA, P o = 0.9W max.) Dimensions See final page ordering information When ordering a MTL use one of the following order codes to uniquely specify your requirement. Order code Type Backlight material Weight (nom.) style MTL Panel No Aluminium 00g C MTLB Panel Yes Aluminium 00g C The given data is only intended as a product description and should not be regarded as a legal warranty of properties or guarantee. In the interest of further technical developments, we reserve the right to make design changes. EUROPE (EMEA): (0)8 7 THE AMERICAS: ASIA-PACIFIC: 9888 enquiry@mtl-inst.com csinfo@mtl-inst.com sales.mtlsing@cooperindustries.com EPS0 RevH 07

4 case dimensions (mm) Style 'A' front view side view rear view bottom view 0 (.7 ) 0 (. ) 0mm (. ) 7 (.9 ) (. ) mm (0.98 ) MTL - Threaded M0.mm (0.89 ) MTL - Drilled Æ 0 (0.79 ) Style 'B' front view side view panel cutout (0. ) 0 (.7 ) 98 (. ) (. ) 0 (. ) (. ) Style 'C' front view side view panel cutout 7 (.8 ) 0 (.8 ) 8 (.8 ) 8 (. ) (.7 ) (0. ) accessories Order code Description Used with WMP Wall mounting plate MTL/ PMA Pipe mounting adaptor MTL/ used with WMP PIP Pipe mounting kit MTL/ GAS0 Spare gaskets - pk of 0 MTL/ GAS Spare gaskets - pk of 0 MTL Recommended IS interfaces for powering display Input circuits (in series with transmitter) MTL, MTL, MTL7787 Output circuits (direct connected or in series with field device) MTLY, MTLY, MTL778P Recommended IS interfaces for powering backlight MTL, MTL, MTL778P EUROPE (EMEA): (0)8 7 THE AMERICAS: ASIA-PACIFIC: 9888 enquiry@mtl-inst.com csinfo@mtl-inst.com sales.mtlsing@cooperindustries.com EPS0 RevH 07

5 IS indicators /7 DISPLAYS IS display certified to ATEX High contrast LCD with backlight Communication from a safe area via a galvanic isolator Operator push-buttons or external switch inputs Two switch outputs IP front panel The /7 Serial Text Displays are intrinsically safe instruments that can display text and simple graphics in a hazardous area. Having a number of push-buttons and two solid-state switched outputs, they provide a low cost operator interface ideal for simple machine and process control applications. In addition to new installations, the legacy protocol enables existing MTL/ display systems to be easily upgraded. Data and power are normally supplied by a - wire serial data link from an MTL0 isolator in the safe area. This isolator, which can power and communicate with up to two /7 serial text displays, has a bi-directional RS or RS safe area port. Alternatively, a wire system may be used to communicate with up to four /7 text displays. The high contrast LCD incorporates a green backlight that is powered by the serial data link. Brightness and contrast are adjustable enabling the display to be read in all lighting conditions from full sunlight to total darkness. Six push-buttons on the front panel of the (four on the MTL7) may be used for operator acknowledgments or controls. If larger industrial switches are required, these may be connected to the text display rear (MTL7 internal) terminals. When the remote switches are activated, the front panel push-buttons are disabled automatically. Two isolated switch outputs, which can control certified hazardous area loads such as sounders, lamps and valves, are included. The /7 text displays are normally controlled and interrogated by a safe area process computer or by a dedicated instrument such as a PLC or weighing system. The text displays may be used singly but up to four instruments can be multidropped on a hazardous area network. At a data rate of 900 bps, the cable between the safe area galvanic isolator and the /7 text display may be up to 00m long. The protocol, which uses ASCII characters, enables text to be written anywhere on the screen in five different font sizes, together with lines, boxes and bargraphs. Simple bitmap graphics may be downloaded to the display and all characters can be reversed or flashed. Information can also be written to a hidden screen which may be displayed when required. Five different operational modes are selectable, allowing the user to choose the appropriate level of communications security for each application. These range from immediate execution of a command with no message acknowledgement, to a bit CRC. The communications speed, number of stop bits and polarity of the parity bit can also be defined. The legacy protocol enables the or MTL7 to replace an MTL or MTL, in order to provide certification to ATEX and a display backlight. No software or galvanic isolator changes are required and the will fit into the existing panel cut-out. If required, simple modifications to the driver software will allow the enhanced features of the /7 to be used. EUROPE (EMEA) Tel: (0)8 7 Fax: (0)8 8 AMERICAS Tel: Fax: ASIA PACIFIC Tel: Fax: enquiry@mtl-inst.com Web site: July 007

6 SPECIFICATIONS Location Zone 0, or DISPLAY Type 0 x pixel liquid crystal. Display Size 8.mm x mm. Backlight Powered from serial link. Characters ASCII character set, font sizes each with computer definable soft characters. Hidden screen May be written to at any time and displayed when required. Switch cable length m max. OUTPUTS Two software controlled switch outputs. Contacts Isolated single pole solid state switch (certified as simple apparatus). R on less than Ω 0.7V R off greater than MΩ I.S. parameters Ui = 8Vdc, Ii = 00mA, Pi = 0.8W DATA Transmission Speed 0., 0.,.,.,.8, 9. or 9.k bps.* Cable length between isolator(s) & /7 00m max at Baud rate of 9.k bps* *Depends upon configuration & type of cable - see instruction manual. Format or stop bits; odd, even or no parity bit; 7 or 8 data bits. Protocol /7 or MTL/. CONTROLS Front panel : push-buttons which can be software interrogated. MTL7: push-buttons which can be software interrogated. Each button function may be displayed on the screen. Buttons may be disabled. External switches Control may be transferred to six external switches; front panel buttons are inhibited. ENVIRONMENTAL Operating temp 0 C to 0 C (certified for use at 0 C) Humidity To 0 C Enclosure Front IP Rear IP0 MECHANICAL Terminals Removable with screw clamp for 0. to.mm cable. Weight 0.7kg MTL7.kg ACCESSORIES Tag number Thermally printed strip on rear of instrument. Programming guide May be downloaded from APPROVALS For the latest certification information visit: Country (Authority) standards & ATEX Directive) standard) MTL7 Country (Authority) standards & ATEX Directive) standard) Standard EN 000: 00 EN 00: 997 EN 08: 999 EN 009: 980 Standard EN 000: 00 EN 00: 997 EN 08: 999 EN 009: 980 Certificate/ file no. ITS0ATEX7 Ex 0E9 -wire system Ex 0E9 -wire system Ex 0E9 -wire system Certificate/ file no. ITS0ATEX7 Ex 0E9 -wire system Ex 0E9 -wire system Ex 0E9 -wire system Approved for Group II Category G USA (FM) 0 entity 07 Class I, Div, Grps A-D Class, Zone 0 non-incendive Class I, Div, Grps A-D Class, Zone Approved for Group II Category G USA (FM) 0 entity 07 Class I,II,III, Div, Grps A-G Class, Zone 0 non-incendive Class I, Div, Grps A-D Class, Zone Class II, Div, Grps E-G Class III, Div EUROPE (EMEA) Tel: (0)8 7 Fax: (0)8 8 AMERICAS Tel: Fax: ASIA PACIFIC Tel: Fax: enquiry@mtl-inst.com Web site: July 007

7 DIMENSIONS MTL7 DIMENSIONS Panel cut-out Recommended panel cut-out DIN / -0.0 x / -0.0 To achieve an IP seal between the instrument and the panel.0 0./-0.0 x. 0./-0.0 Four panel mounting clips must be used Information This instrument can display text in five font sizes P E 7 Information This instrument can display text in five font sizes TERMINAL CONNECTIONS 7 Three. Æ holes for cable entries S7 S S S S S S Two M clearance holes for surface mounting A A A A Rx Tx V sig 0V V External switches Switch outputs TERMINAL CONNECTIONS CONNECTIONS S S S S S S S7 A A A A Hazardous area Safe area V 0V V sig Tx Rx External switches Switch outputs CONNECTIONS Hazardous area Safe area P E S7 S S S S S S S S S S S S S7 MTL0 RS or RS P E MTL0 RS or RS 0 to V dc S S S S S S S7 0 to V dc S7 S S S S S S Optional external switches -wire system for or text displays Optional external switches -wire system for or text displays EUROPE (EMEA) Tel: (0)8 7 Fax: (0)8 8 AMERICAS Tel: Fax: ASIA PACIFIC Tel: Fax: enquiry@mtl-inst.com Web site: July 007