Model 2771C Remote Charge Converter
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Model 2771C Remote Charge Converter - 1

FeaturesDescription > Supports IEEE P1451.4 for smart sensorsՕ Wide frequency response Broadband noise down to 5 յVrms M1 Version with male BNC for panel mounting Օ Rugged small package Low noise Օ Three different gains Radiation tested to 1.0 meg rads The Endevco ծ model 2771C-XX remote charge converter (RRC) is an ultra low noise, two-wire, single-ended device designed for use with piezoelectric transducers. This device transforms the transducers high impedance charge output to a low impedance voltage proportional to the transducerҒs charge. The signal output from the RCC is less susceptible to noise pick-up because of its low impedance. Also, the shunt capacitance of the cable connecting the RCC to the main conditioner does not significantly affect the noise and sensitivity of the system.The signal output from the RCC and the current to the RCC are carried with the same wire. The 2771C has fixed gains of 0.1 mV/pC, 1.0 mV/pC, 10 mV/pC. This is a low noise device. It operates within a constant current range of 4 to 20 mA.This unit supports the proposed IEEE P1451.4 TEDS (Transducer Electronic Data Sheet); a memory chip that allows storage and recall of the following sensor data: sensitivity, model number, serial number, manufacturer, date of last calibration and sensor location. Shell (Case)InputMicrodot S-50 SeriesOutputBNC > M 2771C Block Dia g ram >

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Model 2771C Remote Charge Converter - 2

All specifications are typical at 75F (24аC), referenced at 100 Hz and conform to ISA-RP37.2 (1-64) unless otherwise indicated. > Type Piezoelectric single-ended with one side connected to signal ground Source resistance 100 kΩ minimum to meet all specifications Source capacitance, Cs 20 nF maximum to meet all specifications > Type Single ended with one side connected to signal ground. The output signal is inverted. Output impedance 50 Ω maximum. Capacitance load Operation up to 100 nF maximum DC output bias 11.5 to 15 V over the temperature range -40C to 100аC Linear output voltage 10 V...

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