Pressure Transmitters andPressure

Digital InterfaceAnalog InterfaceATEX / IECExLow PowerCiO-TechnologyDirect Analog Signal PathTemperature RangeSpeedCiO-Technology: In chip-in-oil technology, the signalconditioning chip is housed with the pressure sen sing chip inside the oil-filled housing. As there are no external electronics, more compact constructions are possible, and the products are extremely robust againstenvironmental influences such as moisture, vibrations,shock and EMC.AccuracyMathMod Compensation: Mathematical modelling ofthe sensor characteristics allows for accurate compen sation and results in a standardized output signal.Depending on the complexity of the modelling or thecompensation algorithms, this is practically free of tem perature influences and linearity errors.MathMod CompensationProduct Lines at a GlanceRS485SDI-12CAN4 20 mA0 10 V0 5 V0 2,5 V0,1 2,5 VX-LineThe flagship in terms of precision, this line stands outthanks to its high level of accuracy achieved by theelaborate digital compensation of the sensor characte ristics, as well as the wide range of digital and analoginterfaces. optional to bedefined Y-LineThe classic analog industrial transmitter with a verylow temperature error. The temperature compensationallows for an accuracy specification as the overall errorband across a defined temperature range. 4 20 mA0 10 V0 5 V0,5 4,5 V C-LineThis one-chip solution for signal processing servesas a supplement to the Y-Line and covers ratiometric applications. It can be operated up to an extraordinary150 C and stands out in general thanks to its robust ness against environmental influences.0,5 4,5 Vratiom.D-LineProbably the world’s smallest pressure transmitters;with their I2C interface, these are excellent for simpleintegration in microcontroller-based systems. The lowpower optimised design lends itself well to battery- operated devices. I2CHB-Line (High Bandwidth)The hybrid wiring concept, which combines the accu racy of digital compensation with the high bandwidthof a direct analog signal path, was developed for highlydynamic applications and is paired with correspondinglyhighly reactive sensors. 0 10 V 4 20 mA0,5 4,5 Vratiom. Semi-openWheat stonebridgeLaser-Line (22M / 22S)Pure amplifier circuits with laser-adjustable resistors aresuitable for high-volume jobs with reduced accuracyrequirements and allow for customer-specific analogsolutions thanks to the high degree of design flexibility.Pressure transducers (basis of all lines)In contrast to pressure transmitters, pressure trans ducers do not contain active signal processing. Thesignals from the measurement bridge are provided directly to the user, and there are only minor limitationsin terms of bandwidth and resolution. A calibration certi ficate indicates the sensor characteristics and the possi bility of compensation with resistors. excellent good adequate-2-optional(CaliCard)

Piezoresistive Pressure TransducersPressure transducers withlaser-welded stainless-steel diaphragmPressure transducers for high pressureSeries 6LHP / 7LHP / 8Series 7LHPI – Inconel up to 200 CSeries 3L to 9L – compact designs ø 9,5 to 19 mmSeries 10L – «the original» ø 19 x 15 mmwwwwPressure ranges from -1 to 1000 barAbsolute, relative and differential pressureSignal output typ. 200 mV @ 1 mA supplyIndividual calibration certificate(including compensation values)wwwwwVery high long-term stabilityTemperature ranges from -55 to 150 CIntegrated temperature sensor (top of bridge)Housing optionally made from Hastelloy and TitaniumMathematical modelling on customer requestwwwwPressure ranges from 200 to 1500 barAbsolute pressureSignal output typ. 200 mV @ 1 mA supplyIndividual calibration certificate(including compensation values)wwwwwVery high long-term stabilityRobust and corrosion-resistantOptionally available with integrated PT1000 temperature sensorAlso available as a screw-mounted housing with metallic sealMathematical modelling on customer requestOEM Pressure TransmittersOEM pressure transmitters are built to various levels of comple tion to meet customer’s integration needs: these unique productscan thus be supplemented with electronics and calibrations, forexample.9LY10LX9FLHousing components such as pressure connections can bemade on customer request thanks to the high degree of verticalintegration.9FLX20S20SX23SXEvery mechanical expansion stage of a complete pressure trans mitter can become a sales product (see exploded ----------------------------------- 134PA-10L/20 BAR/81838.3 (1) SN E133755 -------------------------(3)(4)(6)TempZero (5) 1000Comp (7) dZero[ --------------------------L1COMP R11000 kOhm, (8) R412.0 Ohm (8)RB3465 Ohm (8)ZERO0.2 mV (9)P atm965 mbar (10)SENS8.43 mV/bar at 1.000 -----------Long Term Stability Ok (16)Lot 70590 (17)Test 500 Volt ok (18)Supply 1.000 mA (19)20.06.20 (20) --------------------------------- PH02.A03DqK (20)(12)At KELLER, all pressure measu ring devices are calibrated forpressure and temperature.Depending on the product’s expan sion stage, an electronic circuit isresponsible for compensating andprocessing the signals, or else thesensor’s calibration data are pro vided (calibration certificate left).Standard TransmitterDigitally compensated TransmitterErrorin mbar100Errorin mbar100505000-500-100-10 C102550Temperature80 C-502-1004 ure6ss-10 C8 pre r10 rget n baiTa102550Temperature80 C024 ure6ss8 pre r10 rget n baiTaKELLER compensated pressure transmitters are provided withan indication of the total error band – a maximum signal variationin a defined temperature range.In addition, test reports can be displayed, with measurementdata recorded at a minimum of 3 temperatures and 4 pressurepoints.The following is an example of the effect of digital compensationof the X-line with a resulting typical error band of only 0,05 %FSfrom -10 to 80 C.-3-

Digital Pressure Transmitters15:00X-Line Technical Featuresw Digital interfaces: Modbus RTU via RS485, CANopenw Scalable Analog output (2-conductor or 3-conductor)w Mathematical compensation of non-linearity andtemperature dependenciesw Temperature as an additional digital measured variablew Free software for recording, configuring andreadjustingw Available in ex-versionHigh-precision pressure transmittersCapacitive pressure transmittersSeries 33X / 35XSeries 41Xw Pressure ranges from 0,3 to 1000 barw Accuracy 0,05 % of the full rangew Precision of 0,01 %FS optionally availablew Pressure ranges from 10 to 300 mbarw Resolution up to 1 µbarw Gold-plated ceramic measuring cellDifferential pressure transmittersDifferential pressure transmittersSeries PD-39XSeries PD-33Xw High overload resistance thanks to double sensor design,numerical differential pressure build-upw Basic pressure ranges from 3 to 300 barw Differential pressure range freely scalable within thebasic pressure rangew Pressure ranges from 0,3 to 30 barw Classic «wet/wet» differential pressure measurementSeries PRD-33Xw Pressure ranges from 0,35 to 3 bar,all with 40 bar basic pressure rangew With additional absolute basic pressure sensorD-Line Technical Featuresw With I2C microcontroller interfacew Extremely low power consumptionw Hermetically sealed sensor electronics(chip-in-oil technology)w Robust stainless-steel housingw Available in ex-versionw Available with RFID interface andintegrated logger: 21D-RFID / 21DC-RFIDI2C is a trademarkof NXPEmbedded OEM pressure transmittersEmbedded OEM pressure transmitter headsSeries 4LD to 9LDSeries 20Dw «Probably the world’s smallest pressure transmitter!»w Pressure ranges from 0,3 to 1000 barw Operating temperature range from -40 to 110 Cw Based on 7LD or 9FLDw Various pressure connections (thread, quick-fit, etc.)w Also available as a complete transmitter with cable-4-

Analog Pressure TransmittersY-Line Technical Featuresw Analog outputs: 4 to 20 mA, 0 to 10 V, 0 to 5 V,0,5 to 4,5 V not ratiometricw Compensated over the entire temperature rangew No internal sealsw Optimised electromagnetic compatibilityw Ideal for industrial applicationsCompact pressure transmittersVersatile pressure transmittersSeries 21Y / 21PYSeries 23SY / 25Yw Pressure ranges from 2 to 1000 barw Total error band max. 1 %FS @ 0 to 50 Cw Optimised for high-volume serieswwwwPressure ranges from 0,1 to 1000 barTotal error band max. 0,5 %FS @ 0 to 50 CVarious electrical and pressure connections possibleAvailable in ex-versionC-Line Technical Featuresw Ratiometric output: 0,5 to 4,5 V @ 5 VDCw Reverse polarity and overload protection 33 VDCw Hermetically sealed sensor electronics(chip-in-oil technology)w Robust stainless-steel housingw Exceptional electromagnetic compatibilityw Digitally compensated over the entire temperature rangeCompact pressure transmitters – ratiometricEmbedded OEM pressure transmitters – ratiometricSeries 21CSeries 4LC to 9LCw Pressure ranges from 2 to 1000 barw Total error band max. 1 %FS @ 0 to 50 Cw No internal sealsw Pressure ranges from 1 to 1000 barw Can be compensated in the range of -40 to 150 Cw Also available with thread connectionATEX / IECExSeries 33X-EiThe ATEX directives apply in the EU and require the use ofproducts that are suitable for explosive atmospheres.KELLER produces intrinsically safe transmitters, as well astransmitters with a pressure-resistant enclosure. Intrinsicallysafe transmitters (ia) can only be operated in conjunction with anintrinsically safe power supply, which is not included. They can beused up to Zone 0, depending on the product. Transmitters witha pressure-resistant enclosure (db), on the other hand, can onlybe used up to Zone 1.Series 23SY-Ei-5-Series 23-Ed

Application-specific DesignsFront-flush pressure transmittersHigh-temperature pressure transmittersSeries 35XHT / 35XHTTSeries 35XHTCwwwwwFood-grade front-flush process connectionsMedia temperatures of up to 150 CFDA certificationMaterial certificate DIN EN 10204Optionally also available in Hastelloy wwwwFood-grade front-flush process connectionsMedia temperatures of up to 300 CMaterial certificate DIN EN 10204Optionally also available in Hastelloy w Food industryw Beverage productionw Pharmaceuticals sectorw Biotechnologyw Chemical industryw Pharmaceuticals sectorMiniature pressure transmittersHigh-precision pressure gaugesSeries M5HBSeries 8LX / 7LHPI / 33X with SubConn wwwwTemperature resistance up to 200 CMeasuring dynamics from static to 50 kHzLocal measurement thanks to M5 fine threadAlso available as a pressure transducer without electronicswwwwSuitable for high pressures up to 1500 barSuitable for media temperatures up to 200 CVarious materials such as titanium, Hastelloy , Inconel Oil & gas explorationwwwwEngine test standsWind tunnels / shock wavesCompressors / pumpsLeak testsw Remotely operated vehicle (ROV)w Marine researchw Downhole, topside, wellhead, «Christmas tree»Inert gas-filled pressure transmitterHomologated pressure transmittersModifications of the Series 23 or 35XSeries 22DT / 22M / 22Sw Modular designw Hermetically sealed housingw Specification-dependent, also in accordance with DO 160,MIL 810 or similarw KELLER centre of competence for design and approvalwwwww Aviationw Space flightw Automotive industryw Bivalent vehicles (22DT / 14 bar)-6-Pressure ranges of 5 to 250 barRatiometric signal outputHomologation E4-110R and E4-10RSeries 22DT with temperature sensor in volume flow

Miniature Pressure SensorsInterface ConvertersMiniature pressure sensorsInterface convertersSeries 2MiFor communication between device and computerw Pressure ranges from 1 to 400 barw Signal output typ. 200 mV @ 1 mA supplyw Optionally also available with offset compensationelectronicsw USB – RS485:w RS232 – RS485:w USB – I2C:wwwwHydrodynamic and aerodynamic pressure measurementsTypical overall size ø 4,5 x 3 mmLocal measurement with minimal system interventionSensors can be installed in delivered componentsK-114 family with various electricalconnectionsK-102, K-102I, K-103-A, K-107-BK-404-TThe K-114 interface converter is also available with a Blue tooth interface and integrated accumulator. This allows for awireless connection via Serial Port Profile (SPP) in addition tothe USB interface. The connected device is supplied by theconverter’s battery.Special DevicesPiezoresistive pressure transducers and transmittersCustomer-specific productsquantities, among other things. Their operating sites could notbe more varied: they can be found in painting facilities, dive com puters, refrigeration units (in cooling compressors in general),in the aviation and auto industries and in oil and gas extraction(downhole), to name but a few.In addition to more than 500 standard products, KELLER alsodevelops and produces customer-specific solutions. In over 35 highly specialised production islands, the latest productionprocesses are used to manufacture special designs in smallOptions and approvalswwwwwwATEX and IECEx approvalTitanium, Hastelloy , Inconel – in all metallic componentsVarious cable materials possible such as PE / TPE / FEP (Teflon )Various interfaces are available to choose fromCustomer-specific analysesEnhanced lightning protectionExtended temperature ranges-7-

Welcome to KELLER AG für Druckmesstechnik. Your Swiss Pressure Sensing Specialist.KELLER AG für Druckmesstechnik, which has its headquartersin Winterthur, Switzerland, is Europe’s leading manufacturer ofmedia isolated pressure transducers and transmitters.The entire production process, from the manu facturing of theindividual components and the calibration of the sensors throughto the final quality control of the finished products, takes placeat the company’s headquarters in Winterthur. This means that allof KELLER AG’s products are officially «Made in Switzerland».The application areas for KELLER’s pressure transducers arejust as broad as KELLER’s product range.KELLER AG für Druckmesstechnik and KELLER Gesellschaft fürDruckmesstechnik mbH Jestetten have ISO 9001 certification.KELLER SoftwareKELLER AG für Druckmesstechnik has its own software depart ment. Its comprehensive range of applications is always includedwith the relevant products. No licence fees are charged.Founder / Founded inHannes W. Keller, dipl. Phys. ETH / 1974Workforce450 employeesTurnoverCHF 80 millionWarehouse / ShippingWinterthur (CH), Head Office and ProductionJestetten (D), EU Logistics CentreSubsidiaries and sales partners all around the world.Other Product OverviewsAnother special area of expertise of KELLER AGis the production and sale of level sensors anddata loggers – usually in the water industry.These are presented in the overview of«Hydrostatic pressure measurement for filllevels and gauges».Our digital manometers are also presen ted in a product overview: these highprecision manometers are used to mea sure and monitor pressure. They can befound in measurement and testing tech nology, hydraulics and pneumatics and inmedical technology, to name but a fewindustries.KELLER AG für DruckmesstechnikSt. Gallerstrasse 1198404 WinterthurSwitzerland 41 52 235 25 25KELLER Gesellschaft für Druckmesstechnik mbHSchwarzwaldstr. 1779798 JestettenGermany 49 7745 9214 [email protected] contact at KELLER:

w Classic «wet/wet» differential pressure measurement Series PRD 33X w Pressure ranges from 0,35 to 3 bar, all with 40 bar basic pressure range w With additional absolute basic pressure sensor Embedded OEM pressure transmitters Series 4LD to 9LD w «Probably the world’s smallest pressure transmitter!