Technical Pressure Transmitter Information cerabar …

1 TechnicalInformationTI 372P/24/aePressure Transmittercerabar T PMP 135 Pressure Transmitter for hygienic processesFor absolute and gauge pressures up to 500 psiFlush-mounted process connections withmetal diaphragmThe Power of Know HowApplicationThe cerabar T PMP 135 is a pressuretransmitter for hygienic applications, the food processing and pharmaceuti-cal industries. It is designed for measur-ing absolute and gauge pressures ingases, vapors, liquids and dust. Finely graduated measuring rangesup to 500 psi Electronic versions include:- 4 to 20 mA analog output- Switch output (PNP)Features and benefitsThe PMP 135 is a compact, low costpressure Transmitter , engineered forhygienic processes.

2 Flush-mounted process connectionswith metal diaphragm Hygienic design as per 3-A guidelines Analog output accuracy , PNPswitch point deviation 1% Up to 5 times overload resistant andexcellent longterm stability ( year) Process temperature, -13 to +212 F;maximum temperature 275 F (1 hour) Optional inspection certificate Wetted materials made of 316L SSwith a surface quality of Ra m(better than 150 grit) cerabar T PMP 135 Endress+HauserFunction and system designMeasuring principlePMP 135 with analog outputThe process Pressure acting on the metallic separating diaphragm of the sensor istransmitted to a resistance bridge via a fill fluid.

3 The change in the output voltage ofthe bridge is proportional to the Pressure and can be measured 135 with PNP switch outputThe process Pressure acting on the metallic separating diaphragm of the sensor istransmitted to a resistance bridge via a fill fluid. A differential amplifier creates astandard signal from the Pressure -proportional change in the output voltage of thebridge. A comparator with an adjustable hysteresis compares this signal with thepre-set switch point and then activates the transistor output and LED T PMP 135 Pressure Transmitter with: 4 to 20 mA analog outputPower supply, RN 221N Transmitter power supply unit from Endress+Hauser Switch outputPreferably in connection with a programmable logic controller (PLC).

4 Positivesignal at electronics switch (PNP).Measuring systemInputThe measured variable for the cerabar T PMP 135 Pressure Transmitter can beselected as either gauge or absolute ranges up to 500 psi (40 bar) can be selected (refer to Ordering Informa-tion).Measured variableMeasuring rangeOutputOutput signal4 to 20 mARB (US - 12 V) / A (US = power supply)Analog outputLoad24 to 20 mApp12 ABA = analog output with Transmitter power supply unit 1B = PNP output with load 2 , PLC, DCS, relayCerabar T PMP 135 Endress+Hauser3 Output signalPositive voltage signal (rate depends on power supply voltage) at electronics switchoutput (PNP)Switch status ON: Ia 500 mASwitch status OFF.

5 Ia 1 mAMaximum 6 WMaximum 10 HzInput resistance Ri 2 k Input current Ii 10 mATo prevent electrical interference, only operate an inductive load (relays, contactors,solenoid valves) when directly connected to a protective circuit (diode or capacitor).Switch (PNP) outputOutput currentPowerSwitch frequencyInput PLCI nductive loadsPower supplyCable entry1/2 NPT or PG 11 M 12 x 1 plug 15 ft cable, analog output only1 Plug-in housing 1 Coupling nut 1 Reference Pressure line2 Plug-in jack with gasket 2 Connector with gasket3 Coupling nut 3 Operating potentiometer (inner)4 Plug with o-ring5 Operating potentiometer (inner)1211233451/2" NPT / Pg 11M 12x116 ft (5 m)

6 CableCerabar T PMP 135 Endress+Hauser4 Electrical connectionAnalog output connectionSupply voltage12 to 30 VDCM aximum 5%Plug with 1/2 NPT, Pg 11, M 12 x 1 or cableResidual rippleCable entry1 Plug with 1/2 NPT or Pg 112 M 12 x 1 ;lug3 Cable (rd = red, wh = white, gn = green1 Plug with 1/2 NPT or Pg 112 M 12 x 1 ;lugR: External load, relay, programmable logic controller, distributed control systemPNP switch connectionSupply voltageResidual rippleCable entryCurrent consumption12 to 32 VDCW ithout load, < 20 mA, with reverse polarity protectionMaximum 10%Plug with 1/2 NPT, PG 11 or M 12 X 1 ++++GND 123rdwhgn332112 to 30 V12 to 30V12 to 30 V4 to 20 mA4 to 20 mA4 to 20 mA2 1 + ++2 1+3+RR1218 to 32 V321 cerabar T PMP 135 Endress+Hauser5 Performance characteristicsNote.)

7 Percentages listed below refer to the measuring rangeAs per DIN IEC 60770, T = 77 F (25 C) including hysteresis and non-reproducibility (limit point method as perDIN IEC 60770) 1% to 4 ms per year Zero: typical / 10K, maximum / 10K. Values are / 10K higher formeasuring spans 87 psi (6 bar) Span: typical / 10K, maximum / 10K Switch point: typical / 10K, maximum / 10 KReference operating conditionsAnalog output non-linearitySwitch point deviationSwitch point non-reproducibilitySettling timeLong-term driftInfluence of temperatureOperating conditions, installationAny orientation.

8 Orientation dependent zero shift can be corrected using potentiom-eter adjustmentsMounting positionOperating conditions, environment-13 to +158 F (-25 to +70 C)-40 to +185 F (-40 to +85 C)4 Z: with Z = 158 F (70 C) as per VDI/VDE 3540 NEMA 4X (IP 65) with 1/2 NPT or Pg 11 cable entry NEMA 4X (IP 65) with M 12 x 1 plug, when using gauge Pressure sensorsNEMA 6P (IP 68), 1 m water column, with 12 x 1 plug, when using absolutepressure sensors NEMA 6P (IP 68), 1 m water column, with cable4M5 as per DIN EN 60721-3 Interference emission as per EN 61326 electrical device BInterference immunity as per EN 61326 appendix A (industrial use)

9 And NAMUR recommendation NE 21 Ambient temperatureStorage temperatureClimate classDegree of protectionVibration resistanceElectromagnetic compatibilityOperating conditions, process-13 to +212 F (-25 to +100 C), maximum 275 F (135 C) for maximum 1 hourMaximum overload resistance, refer to Ordering Information Vacuum resistance up to psia (10 mbarabs)Medium temperatureLimiting medium Pressure rangeCerabar T PMP 135 Endress+HauserMechanical constructionPMP 135 dimensionsA = height dimension of process connector (see process connection drawings below) Plug version with 1/2 NPT or Pg 11 cable connection per DIN 43650A/ISO 4400 M 12 x 1 plug version Cable version , with 16 ft.

10 (5 m) fixed cable including Pressure connectionsTri-clamp, 1/2 or 3/4 (ISO 2852)Tri-clamp, 1 or 1-1/2 (ISO 2852)Tri-clamp, 2 (ISO 2852)G 1A (ISO 228), with tapered metallic sealG 1A (ISO 228), with sealing surface for flush-mounted installationSMS 1-1/2 12345661/2" NPT / Pg 11M 1216 ft(5 m) "(79) "(37) "(52) "(79) "(15) "(69) "(54) "(39)AAA "( ) "( ) "( )123456G1AG1A "(55) "(33) * "(33) * "(33) * "(33) * "(39) * "(41) * "(27) "(23) "( ) "(34) "( ) "( ) "( ) "(64)MMMMMM = diaphragm diameter, " ( mm)* = "A" dimension height added for overall unit length (refer to graphic at top of page).