Keller OEM Sensors, Transducers, and transmitters

The Series 10 pressure transducers cover all pressure ranges from 100 mbar to 1000 bar. They have been produced for over 30 years and are the premium product of the KELLER OEM-line. They are delivered with engraved serial number and electrical leadouts. Several millions of these pressure transducers are in use world-wide in a variety of different applications. Main ields of application are: Level technology, pneumatics, hydraulics, avionics. A high-sensitivity piezoresistive silicon chip is used for pressure sensing. The chip is protected against ambient inluences by a stainless steel housing sealed with a concentrically corrugated diaphragm. The housing is illed with silicone oil so as to ensure the transfer of the pressure from the diaphragm to the sensing component. All metal parts in contact with the pressure media are made of stainless steel 316 L. The fully welded housing is vacuum-tight. A Rugged Pressure Transduce. The piezoresistive chip immersed in silicone oil is welded into a housing made of stainless steel 316 L. High Sensitivity A nominal signal of 200 mV is obtained at a supply current of 1 mA for the standard pressure ranges above 2 bar. Flexibility Versio

The KELLER Series 10 sensor is mounted with the compensation resistors in a stainless steel housing. The sensor floats on an O-ring seal and is therefore free of any housing stresses. It is particularly suited in connection with PAP-based signal processing. Transducers can be ordered with the coefficients of a mathematical model ready for integration with a PAP-base system. Error Bands of 0,1%°≠0,01 %FS are achievable, depending on the temperature ranges Whilst the Series 11 fulfils all the classical functions expected of a mV-transducer, it is often used in development of larger OEM projects to test the performance of the KELLER OEM sensors. As a special order, any OEM sensor from Series 3 to 10 can be ordered in such a housing, with or without integrated compensation resistors. The customer can then verify that the chosen OEM sensor is suitable for the application. SPECIFICATIONS (Excitation I = 1 mA) Ranges (FS) Version PAA, PA, PR-110,10,20,51251020bar Overpressure2,52,52,52,5371530bar Output Signal nominal203560100175175175175mV Version PA-11501002004006001000bar Overpressure751503005007001100bar Output Signal nominal175175175175175175mV PR-11(negative range) -0,1-0,

Watercooled pressure transducers are used for accurate static and dynamic measurements in fluids upto 350 !aC. The sensor, an integrated silicon cell with four diffused strain gauge resistors, is locatedin the watercooled section of the oil-filled body. The oil transmits the pressure from the flush steel diaphragm to the sensor, isolating it from the temperature of the media. This allows very accurate pressure measurements over a wide temperature range without influencing the pressure or flow conditions. Originally developed for blow down tests on water-cooled reactors, these transducers find manyapplications in high temperature chemical reactions and engine tests. SPECIFICATIONS SERIES PA 13 LOW PRESSURE Pressure Ranges102050100200400bar Overpressure153075150300500bar Signal Output typ.100010001000100010001000mV ERIES PA 13 HIGH PRESSURES Pressure Ranges4006001000bar Overpressure5007001100bar Signal Output typ.100010001000 PA: Sealed Gauge. Zero at atmospheric pressure (at calibration day) Linearity, incl. Hysteresis< 0,5% FS (0,1 /0,2% FS at reduced Full Scale) Repeatability<  0,1% FS Zero< 20mV (compensatable externally with R5) Operating Temperature2

Keller OEM Sensors, Transducers Series 15 - 15M Piezoresistive pressure transducers flush diaphragm

The TAB 1 pressure measuring cells are designed to measure absolute pressures. They are offered in two different version: Version 1 to be soldered on a glass feed through and welded in an oil filled housing as for industrial transmitters. Version 2 can be soldered directly on printed circuit boards of instruments as for the measurement of depths or altitude, where the surrounding pressure is measured.  TAB (Tape Automated Bonding) is a special process for contacting the diffused resistors on the chip. The resistor aluminum contacts are provided with 0,1 mm thick gold bumps. The pretinned ends of the copper strips on the flexible circuit material are soldered to the these goldbumps. Each contact is able to withstand a force of more than 1 Newton. TAB bonded cells withstand extreme conditions in shock or vibration. TAB bonded cells may be surrounded by high viscosity gels or mouldings in water depth instruments without danger of contact braking as with wire bonded cell.      SPECIFICATIONS. Excitation I = 4 mA SERIES 1 TAB: VERSION 1 Pressure Ranges (FS)bar102050100200400600 Signal Output typ.mV900900900900900900900 Overpressurebar203075

The pressure sensors Series 2, 3 and 4 are suited for direct-mounting on printed circuit boards. The pressure sensor is a piezoresistive measuring cell consisting of a glass back plate and the silicon chip with the diffused resistor bridge. The cell is mounted on a glass feed through and packaged in a housing for easy pressure connection. The high, stable and reliable output signal of the sensor can easily be conditioned with standard ampliiers. All sensors are tested for temperature, stability and linearity and are delivered with an individual calibration sheet. Series 2 The medium is acting directly on the silicon chip and comes into contact with the strain gauges of the Wheatstone bridge. Application in dry air only. Series 3 The sensor is mounted in an aluminium housing. Housing and sensor are protected by a thin  (7 |ìm) parylene layer. This layer grants full protection in applications where condensation may occur. Continuous water exposure is not recommended. The average time of water resistance of the parylene layer is 6 months. Series 4 The medium acts on the rear side of the silicon chip. The pressure medium may be wet. Applications in gas, water and non-agressi

Series 3L...10L, a new range of transducers that beneit from smaller capsule dimensions and crevice free diaphragms. KELLER has developed a new technique for laser welding very thin stainless steel media isolation diaphragms. The smaller crevice free transducers still retain all the traditional performance, stability, and quality, for which KELLER is renowned. 3 L / 4 L / 5 L 6 L 7 L Each transducer is supplied with a calibration sheet indicating sensitivity, linearity, zero offset, temperature errors and the compensation resistors to substantially reduce zero offset and zero temperature errors. 8 L The transducers are designed for loating O-ring seal mounting, this avoids housing induced stress, and guarantees the performance over pressure and temperature as tested in our automatic test chambers. Each transducer comprises of a piezoresistive silicon chip mounted on a PD-9 L glass-metal feed-through header welded into a stainless steel housing and illed with silicone oil, the very thin laser welded stainless steel isolation diaphragm completes the front side. Media pressure is transferred from the stainless steel isolation diaphragm, via the oil inside the cell, to the silicon m

The Series 6 capsules are of all welded stainless steel construction, with integral media isolation diaphragm. No !(R)O!ˉring sea are used. The Series 6 uses a silicon TAB sensor mounted in the oil filled stainless steel capsule, providing a highly stable measuring cell with negligible hysteresis, high output signal and a life of millions of pressure cycles. TAB (Tape Automated Bonding) is a flexible printed circuit system for interconnection between the silicon sensor and the capsule output pins, offering improved reliability and significantly lower production costs. Series 6 is a low cost sensor for OEM use, tested for function only, with no calibration data supplied. Series 6T is supplied tested, with calibration certificate: Linearity, sensitivity, zero point, temperature coefficients 0!-5!aC and compensation resistor values (resistors nt supplied). SPECIFICATIONS (at 4 mA excitation) Pressure Ranges (FS) Sealed Gauge (Low Pressure)102050100200bar Overpressure1530 75 150300bar Sealed Gauge (High Pressure)400600bar Overpressure600900bar Vented Gauge1020bar Overpressure1530bar Excitation0,5!-5 mA constant curren Signal Output (FS)600!-1000 mV @ 4 m Bridge Resistance3

These piezoresistive pressure transmitter-heads are produced on the new KELLER automatic brazing lines, making possible the mass production of high quality pressure transmitters at low cost. This new technology allows the crevice-free construction of the pressure port without using seals or O-rings. In the brass sensor line (Series 6 MC), a steel insert and a nickel dia- phragm are brazed into a brass housing. In the steel version (Series 6 S, Series 6 SC), all parts are of stainless steel (AISI 316 L). The header with the silicon pressure sensor and the glass feed-through pins are welded to the steel insert underneath the oil filling. These transducers are the ideal basis for pressure transmitters, pressure switches or digital pressure instruments. The transducer heads come in 3 basic versions: 6MC: Compact version in brass, lowest price, accuracy 1 % FS.  Ranges 5!-200 ba Series 6 SC / 6 MC: Ranges 5!-200 ba 6SC: Compact version in stainless steel, accuracy 0,5 % FS.  Ranges: 5!-200 bar. (Compact Version) 6S: Stainless steel, highest performance, accuracy 0,5 % FS.  Ranges: 0,3!-1000 ba SPECIFICATIONS Excitation I=4 mA PR-6 ! *0,3*0,5*1,02,05,0 1020 * also neg. r

The Series 7 pressure sensors are for medium pressure ranges, and are the smallest, lightest isolated OEM-sensors available. They have a diameter of only 15 mm without compromising quality and performance. A high-sensitivity piezoresistive silicon chip is used for pressure sensing. The chip is protected against ambient inluences by a stainless steel housing sealed with a concentrically corrugated diaphragm. The housing is illed with silicone oil for the transfer of the pressure from the diaphragm to the sensing component. All metal parts in contact with the pressure media are made of stainless steel AISI 316 L. The fully welded housing is vacuum-tight. The connecting pins allow direct PCB mounting or can be used for connecting cables. A Rugged Pressure Transducer The piezoresistive chip immersed in silicone oil is welded into a housing made of stainless steel AISI 316 L. High Sensitivity A nominal signal of 200 mV is obtained at a supply current of 1 mA for all standard pressure ranges. Flexibility Versions: Absolute and sealed gauge pressure. 6 nominal measurement ranges from 5 to  200 bar. Different materials and oil illings (see options verso). Quality Each pressure tran

The Series 7S / 9S is the latest development in media isolated piezoresistive silicon chip pressure transducers. The new low mass one-piece housing is smaller with a brazed stainless steel diaphragm for lower production cost, giving excellent long-term stability combined with easy installation. The Series 7S / 9S can be installed into a housing using an O-ring seal, or it can be welded.  Welding should only be made to the lange at the rear of the transducer. Performance speciications will remain unaffected by the proper installation. The O-ring seal may be itted directly below the lange, or as a peripheral seal at the front face of the transducer. The rear lange can be modiied or machined off completely where space is important. The thin lange and outer capsule wall ensure that mechanical mounting stresses are not transmitted into the measuring cell. The structure also has good thermal conductance and the sensor closely tracks the process media temperature The Series 7 S / 9 S transducers are constructed from 316L stainless steel, using a high temperature hydrogen brazing technique; the brazed 316L diaphragms are highly resistant to corrosion. The diaphragm of the Series

The Series 8 pressure sensors are extremely durable, even when exposed to fast pressure peaks. They have been developed especially for the measurement of high pressures. The Series 8 sensor for ranges 400!-1000 bar uses  thicker glass feed through and a wire-bonded measuring cell. A high-sensitivity piezoresistive silicon chip is used for pressure sensing. The chip is protected against ambient inluences by a stainless steel housing sealed with a concentrically corrugated diaphragm. The housing is illed with silicone oil for the transfer of the pressure from the diaphragm to the sensing component. All metal parts in contact with the pressure media are made of stainless steel AISI 316 L. The fully welded housing is vacuum-tight. The connecting pins allow direct PCB mounting or can be used for connecting cables. Typical applications: Industrial processes, aviation electronics, servo controls,oil industry, robotics! A Rugged Pressure Transducer The piezoresistive chip immersed in silicone oil is welded into a housing made of stainless steel AISI 316 L. High Sensitivity A nominal signal of 200 mV is obtained at a supply current of 1 mA for all standard pressure ranges. Fl

The Series 9 pressure sensor is the most economic version for pressure ranges from 100 mbar to 200 bar. The standard version is supplied with connecting pins (leadouts are itted only on request) and the serial number is not engraved. A high-sensitivity piezoresistive silicon chip is used for pressure sensing. The chip is protected against ambient inluences by a stainless steel housing sealed with a concentrically corrugated diaphragm. The housing is illed with silicone oil for the transfer of the pressure from the diaphragm to the sensing component. All metal parts in contact with the pressure media are made of stainless steel 316 L. The fully welded housing is vacuum-tight. The connecting pins allow direct PCB mounting or can be used for connecting cables. Typical Applications: Measurement of altitude, aviation electronics, meteorology, servo controls, robotics, hydraulics, sanitary and pharmaceutical engineering, underground mining, injection engineering! Rugged, Small Dimensions, Light Weight The piezoresistive chip immersed in silicone oil is welded into a housing made of stainless steel 316L. Diameter 19 mm; Height 5 mm; Weight 8 grammes. High Sensitivity A nominal sig

DESCRIPTION Whether embedded in an OEM product or simply packaged as a high-end pressure transmitter, the Series 30X enables the OEM to offer superior performance without the need for huge R&D or capital expenditures, and with minimum amount of on hand inventory. Designed to be easily integrated into a wide variety of applications, the 30X features a flush-welded dia- phragm and highly stable piezoresistive sensing element. Combined with Keller!ˉs advanced signal-conditioning circuitry, the 30X features dual (analog & digital) outputs, re-rangeability and mathematical error correction. The result is outstanding Total Error Band (TEB) accuracy over a wide compensated temperature range. FEATURES Programmable analog outputs enables infinite range options Standard dual (analog & RS485) out-puts simplify interface to controls, data collection, and telemetry systems 6-bit internal digital correction for cost-effective low !à0.1% Total Error Band (TEB) accuracy over -10...80!a Factory calibrated for guaranteed !°out-of-the-box!± performanc 316L SS flush-diaphragm sensor standard - 1/4!±-18 NPT male pressure connection  RS485 modified-MODBUS compatible allow

The Series 4 LC to 9 LC is characterized by having fully integrated compensation and signal standardization over the entire temperature range from -40  to 150 Technology KELLER grew up in the 1970s with OEM pressure transducers. Now the company has not only outstanding know-how in design, connection and housing technology at it disposal. After many years of experience in digital signal processing, KELLER has integrated signal processing and compensation at chip level in a joint, hermetically sealed housing in a top class OEM transmitter in the Series 4 LC to 9 LC. First, the entire transmitter electronics in the transducer housing are hermetically embedded in oil and second, these highly-integrated OEM transmitters represent an ideal pressure transmitter module for integration in higher-order systems due to the selected analogue and digital output signals. Interfaces The ratiometric, analogue output signal makes connecting to an external analogue/digital converter extremely simple: the fact that both systems are in principle referenced to each other means that there is no need to set up an expensive, absolute measuring system. The CIO pressure transmitters are designed for