Keller OEM Sensors, Transducers, and transmitters

With the D-line, Keller introduces a unique combination consisting of an exceedingly robust industrial pressure transducer and the popular I2 C microcontroller interface. Pressure transmitters with this interface are commonly available only in consumer market housings made of plastic or ceramic, where merely the parameters for compensation are stored in an integrated memory. The D-line OEM transmitters however have an unprecedented embedded digital signal processing (DSP) core for the compensation and normalization of the output values. Technology The Series 4 LD...9 LD is based on KELLER’s famous Chip-In-Oil (CIO) technology. The “L”stands for the laser welded stainless steel housing and could equally be representative for lowpower (typ. 0,1 µA in idle/sleep mode) and low-voltage (Supply: 1,8...3,6 VDC). The housing is hermetically-sealed, oil-filled and builds a Faraday cage with feed-through capacitors around the entire electronics. The digital interface of the electronics with dual information of pressure and temperature is indicated by the “D”. Interfaces The easiest way to couple an OEM pressure transmitter to a microcontroller based system is a digital I/O-compatible inter

The “…LY” transmitter line benefits from smaller sensor dimensions, crevice-free diaphragms and low Total Error Band performance.The innovative signal conditioning circuit ‘learns’ thermally-induced zero and span errors during calibration. Then during operation, bias corrections are applied directly to the analog output signal, with a resolution of 1.5°K, effectively making each correction temperature a calibration temperature. The residual error is therefore determined primarily by the sensor nonlinearity. The “…LY” line also boasts excellent resistance to electromagnetic interference. The limits of the CE standard, for both conducted and radiated fields, are bettered by a factor of 10, enabling implementation in hostile EMI environments. Applicability to a variety of applications is enhanced by a wide selection of pressure ranges, sensor types, and input/output configurations. Material compatibility is ensured by the optional Hastelloy C-276 construction in place of the standard 316L stainless steel, as well as several different o-ring materials. Specifications Stability Range > 2 bar 0.1% FS typ.     0.2% FS max. Range ≤ 2 bar 2 mbar typ. 

DESCRIPTION Whether embedded in an OEM product or simply packaged as a high-end pressure transmitter, the Series 9LX 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 9LX features a flush-welded diaphragm and highly stable piezoresistive sensing element. Combined with Keller!ˉs advanced signal-conditioning circuitry, the 9LX 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) outputs simplify interface to controls, data collection, and telemetry systems 16-bit internal digital correction for cost-effective low ±0.1% Total  Error Band (TEB) accuracy over          -10...80°C Factory calibrated for guaranteed “out-of-the-box” performance.  316L SS flush-diaphragm sensor      standard -