A TECHNOLOGY FOR EVERY LEVEL APPLICATION

Transcription

1 INSTRUCTION MANUAL A TECHNOLOGY FOR EVERY LEVEL APPLICATION NIVOSWITCH R0/R500 VIBRATION FORK LEVEL SWITCHES Dual purpose level switch with intelligent electronics applicable for: almost all liquids light, free flowing solids Excellent noise immunity through high frequency excitation Various output versions: wire AC, wire DC wire PNP/NPN transistor up to SPDT power relays Polished probe as standard CENELEC EEx ia approved versions ABOUT THE NIVOSWITCH Nivelco has revamped the popular NIVOSWITCH range of Vibrating Forks for an even higher performance and for a greater flexibility of use. The reengineered extreme short fork section enables applications in tight spaces and also on pipes. The 6 times increased excitation frequency will ensure interferencefree operation if used on vibrating structures. Media: The NIVOSWITCH can be used in almost all media like explosive and nonexplosive liquids, aggressive liquids (acids, solvents), high viscosity liquids; unaffected by foam, turbulence, gas content. It can also be used on light and medium density free flowing granules and powders. Application: The NIVOSWITCH covers a large variety of level detection applications and more..: high/low fail safe limit switch, overfill or dry run protection, pump controls, dry/wet indication in pipes. ECTFE (HALAR ) coated flanged versions and hygienic connections Highlights of the NIVOSWITCH: Fit and forget device: simple installation no maintenance. Switching performance does not depend on the change of liquid conductivity, dielectric constant, viscosity, pressure and temperature. Probe extension up to m length. Flange or sliding sleeve options. ECTFE (HALAR ) coated versions for aggressive or sticky media. Hygienic versions with various process connections and 0.5 micron fine polishing. High or low failsafe mode, as well as the medium density is field programmable on most models. Operation test of installed units can be performed with the help of a test magnet on some of the models.

2 GENERAL The NIVOSWITCH is offered in the following versions: NIVOSWITCH RF0 or RF500 is the Standard version with paint coated, robust Aluminium or plastic housing; visible, large bicolour output state indication LED; or power relay output and universal AC/DC power supply. NIVOSWITCH RC0 is the Mini version incorporating a stainless steel tube housing, visible bicolour output state indication LED, and wire AC, wire DC or wire PNP/NPN transistor output. NIVOSWITCH JDT Ex the CENELEC approved wire RC0 Ex vibration forks requires an intrinsically safe remote switching unit containing the intrinsically safe barrier and a potential free output. PRODUCT OVERVIEW The NIVOSWITCH is made to vibrate at its resonant frequency by a pair of piezoceramic discs. By coming in contact with the medium, the frequency and amplitude of the vibration changes. This change is detected, processed and converted into a switch signal by the integral electronics built in SM (Surface Mount) technology. As a standard feature, all forks are polished. A highly polished version for hygienic applications are available with all wetted parts highly polished. STANDARD models Aluminium or Plastic MINI models Stainless steel Housing / Electronics Potential free relay output (SPDT or DPDT) Universal power supply Connector output wire PNP/NPN transistor output wire AC output Integrated cable output wire DC output wire Ex (intrinsically safe) Process connections Stainless steel " BSP or NPT male threads DIN, ANSI and JIS flanges Stainless steel, PP or ECTFE (HALAR ) coated st. st. DN and DN 50 pipethread connections (DIN 85) /" and " Triclamp connections (ISO 85) other hygienic fittings Extension up to m Stainless steel or PFA coated st. st. Fork Stainless steel ECTFE (HALAR ) coated st. st. Protrusion length without extension: mm Accessories Stainless steel weldin socket with Oring for flush mounting Stainless steel sliding sleeve for atmospheric pressure Order code: RPG0 Order codes: RPH RPN / BSP / NPT

3 APPLICATION AND INSTALLATION Application on liquids In applications on liquids with low viscosity (without risk of remaining material on the forktines) any of the mounting shown beside is possible, high viscosity (due to risk of remaining material on the forktines) only vertical (top) mounting can be suggested. In applications with side mounting take care of the positioning mark. Use always HIGH density setting (ρ 0.7 kg/dm ) for application on liquids! Installation on liquids Application on free flowing solids Use only on free flowing materials stored in small vessels, hoppers. Side mounting is recommended only in case the forktines are easily freed from the process medium (ex.: through gravity). In case of side mounting, the NIVOSWITCH must be mounted with the forktines standing vertically (look for the positioning marks). Applying the wire AC output versions for solids should be carried out with considerations. The short versions (protrusion length: mm) are not applicable for solids! Installation on free flowing solids Protect the probe from down falling material! Fork tines should not be exposed to mechanical load. Adjust the Density switch according to table below: X > 5 mm Density setting Density HIGH ρ 0.5 kg/dm LOW ρ < 0.5 kg/dm Do not adjust a lower density than necessary, as this may result in the probe switching even if slight residues of material adhering to it. For dry/wet detection, forktines must be parallel to the direction of flow POSITIONING AND SWITCHING POINT For positioning the forktines, use the marking on the hexagon neck. Avoid above mountings on highly viscose liquids and powders MARK Use a TEFLON (PTFE) tape to aid the positioning of the forktines. If the forktine position is irrelevant, use the sealing ring provided. Values are for water at 5 C Liquids: switching point as well as the switch differential slightly depends on liquid density and mounting position. Solids: switching point as well as the switch differential slightly depends on material quality and mounting position.

4 ELECTRICAL CONNECTIONS MINI models in stainless steel housing wire DC versions with PNP/NPN transistor output, to drive relays, PLCs Connector output version R 4 Integral cable output version R 4 4 Top view with removed connector: PNP mode HIGH density (Liquids: ρ 0.7 kg/dm ; Solids: ρ 0.5 kg/dm ) All models expect the SHORTY "M" Operation mode LED H= High level limit switch L= Low level limit switch "D" Density M H= High L= Low H L D L H The SHORTY models for liquids only LED "M" Operation mode LOW level limit switch PNP mode LOW density (Solids: ρ < 0.5 kg/dm ) HIGH level limit switch H= High level limit switch L= Low level limit switch M H L Density setting LOW level limit switch HIGH level limit switch HIGH density Liquids: ρ 0.7 kg/dm ; Solids: ρ 0.5 kg/dm NPN mode LOW density Solids: ρ < 0.5 kg/dm HIGH density (Liquids: ρ 0.7 kg/dm ; Solids: ρ 0.5 kg/dm ) PNPwiring LOW level limit switch HIGH level limit switch NPN mode LOW density (Solids: ρ < 0.5 kg/dm ) NPNwiring LOW level limit switch HIGH level limit switch wire AC versions, to drive relays, PLCs Do not power up wire AC devices without a load connected in series with the unit and without grounding it! Connector output version R 4 Integral cable output version R 4 L R N R N black green/yellow R black green/yellow R Junction Junction L box box LOW level limit switch HIGH level limit switch LOW level limit switch HIGH level limit switch Please note the wire AC versions can not be programmed for medium density. The units are manufactured with fixed HIGH Density setting. 4

5 SAFE RED GREEN 50VAC 6A/AC 50VAC 8A/AC ON wire DC versions, to drive controllers with current sensitive input Twowire loop powered devices, operate according to the DC Operating diagram diagram beside. Fork Please note, that the wire DC versions can not be programmed for HIGH or LOW FAILSAFE on the device itself. Status LED Output Immersed RED 4 ± ma Free GREEN 9 ± ma Connector output version R 4 6 Integral cable output versionr 4 7 Amplifier unit Amplifier Amplifier unit unit HIGH density (ρ 0,5 kg/dm ) LOW density (ρ < 0,5 kg/dm ) HIGH density(ρ 0,5 kg/dm ) LOW density (ρ < 0,5 kg/dm ) Amplifier unit Ex versions An intrinsically safe, CENELEC Ex approved system, consists of the following: Intrinsically safe vibration fork NIVOSWITCH R08,9 EEx ia IIC T4... T6 Ex L max=m Q =4mm min Ex Intrinsically safe remote switching unit NIVOSWITCH JDTEx [EEx ia] IIC Potential balancing cable Remote switching unit JDT Ex Integral cable version NIVOSWITCH Connector version NIVOSWITCH U S 4 V, DC 0% OUTPUT TERMINALS The Ex level limit switch is OUTPUT LED (RED) powered by the remote switching unit JDT Ex. The remote POWER ON LED (GREEN) SHORT switching unit receives the switch BREAK HI / LO signal through a current loop. The HIGH LOW LINEFAIL LED (RED) remote switching unit provides for TO SENSOR a potentialfree power relay output. High or lowfail safe mode is programmable by switch on the remote switching unit, while switching sensitivity is programmed via changing the polarity of the wire output of the level sensor Temperature classification according to the Ex certificate: T6 T5 T4 TAmbient [ C] V DC ON R< ohm Connector output version R 4 8 TMedium [ C] Integral cable output version R 4 9 Ex Non Ex Ex Non Ex HIGH density LOW density STANDARD models in Alu cast/plastic housing Relay output versions R 4 0 R 4 A R 5 0 R 5 A Top view with removed housing cover: Density setting: HIGH density Liquids: ρ 0.7 kg/dm (Solids: ρ 0.5 kg/dm ) LOW density Solids: ρ < 0.5 kg/dm JDT Ex HIGH density Mains Density L() Status LED NPT /" FAIL SAFE LOW U ~ HIGH 055V AC DENSITY 060V DC HIGH L LOW Grounding FAIL LOW A/AC Pg 6 Pg 6 7 JDT Ex LOW density 8 9 Fail safe mode Output Relay Relay NPT /" Use mm outer diameter circular cables, and tighten cable glands as well as housing cover after installation, to ensure an IP 65 protection. 5

6 TECHNICAL DATA Model Noncoated ECTFE (HALAR) coated Probe material.457 (X 6 CrNiMoTi 7).44 (X CrNiMo 7); ECTFE coated Process connection material.457 (X 6 CrNiMoTi 7) Polypropylene flange (max.: 6 bar) ECTFE coated st.st. flange. Probe extension material.457 (X 6 CrNiMoTi 7) PFA coated st.st. Maximum pressure bar, for derating see Derating diagrams below PP flange: 6 bar, St.st. flange: bar, for derating see Derating diagrams Medium temperature range C to 0 C PP flange: 0 C to 90 C ECTFE coated st.st flange: C to 0 C * Ambient temperature range Standard models in Alucast/plastic housing with relay output: 0 C to 70 C; Mini models in stainless steel housing with electronic output: C to 70 C Ex version: 0 C to 60 C Sealing material VITON Probe length to 000 mm Medium Liquids 0.7 kg/dm density Solids 0.05 kg/dm Liquid viscosity 0000 mm /s (cst) (see Derating diagrams) When immersed 0.5 sec Response sec at high density setting (ρ 0.5 kg/dm ) time When free sec at low density setting (ρ < 0.5 kg/dm ) (see Derating diagrams) Output mode indicator Bicolour Staus LED on outside of housing * Please note, that temperature difference between inner and outer surface of ECTFE coated flanges must not exceed 60 C. If necessary, insulate outer surface of flange. DERATING DIAGRAMS mechanical output related Process pressure (pt) versus medium temperature (TM) for all modells (except ECTFE coated and PP flanged) Current load, versus process (pt) and medium temperature (TM) for transistor output versions t [sec] 5 Temperature limits for wire AC and EX versions SPECIFICATIONS Standard Model Process pressure (pt) versus medium temperature (TM) for models with Polypropylene flange Relay output version R 4 0 R 5 A Model Response time The test was performed using silicone oils with different viscosity fully immersed half immersed only the flat part of the tines immersed Kinematic viscosity ν[cst] Response time (when getting free) versus medium viscosity Remote switching unit (for Ex forks) J D T Ex Housing material Paint coated Aluminium (RF0) Input 9 ± ma to 4 ± ma or plastic (RF500) Max. serial inductivity 5 mh Selection of High/low fail safe By switch Max. parallel capacitance 0.04 µf Density programming By switch High/low mode selection by switch Output Up to SPDT relay Output SPDT relay Output rating Relay : 50 V AC, 8 A, AC AC: 00 VA (50 V or 5 A); Output rating Relay : 50 V AC, 6A, AC DC: 00 W (4 V or 5 A) Electric connections x Pg 6 for 8 to 5 mm cables Supply (wire cross section) (0.75 to.5 mm ) voltage/consumption 4 V DC ± 0 %; max. 00 ma Supply voltage 0 to 55 V AC and 0 to.60 V DC Sensor voltage 6 to 6 V DC Consumption AC:, 7 VA ; DC: < W Electrical protection Class III. Electrical protection Class I. Ex protection mark [EEx ia] IIC Mechanical protection IP 67 (NEMA 6) Ambient temperature 0 C to 45 C Weight (threaded versions) Alu housing:. kg. kg/m Mounting NS 5, 5/75, 5/5, DIN rail Plastic housing: kg/m Housing material PA Enclosure IP 0 Weight 0. kg 6

7 Mini Models wire AC wire DC (PNP/NPN transistor output) R 4 R 4 R 4 R 4 4 Electric connections Integral cable Integral cable Connector Connector (wire cross section) (4 x 0.75 mm ) (5 x 0.5 mm ) Mechanical protection IP 65 IP 68 IP 65 IP 68 Selection of High/low fail safe mode Within the connector With wiring By switch With wiring Density programming Liquids: fixed to ρ 0.7 kg/dm Solids: fixed to ρ 0.5 kg/dm By switch With wiring Output wire AC, in serial connection with the load PNP/NPN transistor; Galvanically isolated PNP/NPN field selectable transistor; field selectable Output protection Reverse polarity, overcurrent and overload protection Supply voltage V AC, 50/60 Hz...55 V DC Consumption Depending on load < 0.6 W Voltage drop (switchedon state) < 0.5 V < 4.5 V Electrical protection Class I. Class III. max. continuos 50 ma AC 50 ma / 55 V DC Current load min. continuos 0 ma / 55 V AC; 5 ma / 4 V AC max. impulse.5 A / ms Residual current (switched off state) < 6 ma < 00 µa Function test Optional test magnet (Order code: RPS0) Weight (threaded versions) 0.5 kg 0. kg / 00 mm Mini Models wire Ex wire DC R 4 8 R 4 9 R 4 6 R 4 7 Electric connections Integral shielded cable Integral cable Connector Connector (wire cross section) ( x 0.5 mm ) ( x 0.5 mm ) Mechanical protection IP 65 IP 68 IP 65 IP 68 Selection of High/low fail safe mode By switch on the NIVOSWITCH JDT Ex At the signal processing end Sensitivity programming With wiring With wiring Output Type wire DC Data When free: 9 ± ma; when immersed: 4 ± ma Transient overvoltage protection Supply voltage Powered by NIVOSWITCH JDTEx 5 to 7 V DC Consumption < 0.5 W Electrical protection Class III., Intrinsically safe Class III. Ex rating EEx ia IIC T4...T6 Intrinsically safe data Umax= 6.5 V DC; Imax= 00 ma; Pmax=.4 W; Leq 0; Ceqmax= 7 nf Weight (threaded versions) 0.5 kg 0. kg / 00 mm R F M P 5 A R C M P R F 4 0 G 4 R T R R D E 4 89 x Pg 6 x NPT / BSP NPT S = see below see below NPT SW = 4 BSP NPT SHORTY BSP DIN DN50 PN6/ ANSI RF50/00 JIS 0K/K 50 A 08 SHORTY Triclamp (ISO85) / ; Type R D R E Nom.size DN DN50 A RD65x/6 RD78x/6 SHORTY A 8 80 R F M P 5 A R M 4 P 4 R C F 4 C 4 JDT Ex 89 x Pg 6 x NPT / BSP NPT 8 S = to m ~ ø SW=4 BSP NPT 0 00 to DIN DN50 PN6/ ANSI RF50/00 JIS 0K/K 50 A 7

8 ORDER CODES NIVOSWITCH "Standard" models in Alucast / plastic housing: NIVOSWITCH R R Fork Code Connections Code Housing Code Length Code Output Code ECTFE coated D BSP thread M Alu.cast 4 Short ( mm)* 00 Relay 0 Standard F NPT thread P Plastic 5 Standard (5 mm) 0 Relay A DIN DN50PN st.st flange** G 0. to m 0 0 ANSI st.st. flange** B 50A JIS st.st flange** K DIN DN50 PN6 PP flange** F ANSI PP flange** A 50A JIS PP flange** J * The short versions are not applicable for solids ** Flanges are screwin type as standard, please indicate welded flange requirement. NIVOSWITCH "Mini" models in stainless steel tube housing: NIVOSWITCH R 4 Fork Code Connections Code Length Code Output Code ECTFE coated A BSP thread M SHORTY ( mm)* 00 wire AC with connector Standard C NPT thread P Standard (5 mm) 0 wire AC with cable Highly polished G DIN DN50PN st.st flange ** G 0. to m 0 0 wire PNP / NPNwith connector ANSI st.st. flange** B wire PNP / NPN with cable 4 50A JIS st.st flange** K wire DC with connector 6 DIN DN50 PN6 PP flange ** F wire DC with cable 7 ANSI PP flange ** A wire Ex with connector 8 50A JIS PP flange ** J wire Ex with cable 9 ½ Triclamp (ISO85) T Triclamp (ISO85) R DN Pipe coupling (DIN85) D DN50 Pipe coupling (DIN85) E Intrinsically safe remote switching unit: * The SHORTY models are not applicable for solids. ** Flanged versions as standard come with flanges screwed on the process connection. NIVOSWITCH J D T Ex (W) *** *** Certified version for the use as overfill protection according to WHG HiTECH Technologies, Inc. 0 Oxford Valley Road Building 505A Yardley, PA Tel: ; Fax: Tech Support (Toll Free) 866DrLevel or 888NIVELCO info@drlevel.com or info@hitechtech.com Web Site: or