GSI127 galvanic separation unit

Galvanic separation unit for use with vibration sensor (CA, CE, PV and VE), dynamic pressure sensor (CP) or proximity sensor (TQ) measurement chains.

The GSI127 galvanic separation unit is a high-quality, high-reliability unit for use with the IPC704 signal conditioner (used by CA accelerometers and CP dynamic pressure sensors), current-output accelerometers such as the CE134, CE281 and CE311, constant-current voltage-output sensors such as the CE110I, PV102 and CE680Mx11, the IQS450 signal conditioner (used by TQ proximity sensors) or the VE210 velocity sensor.

The GSI127 has a configurable transfer function and provides a voltage output. It is designed and built for long-term use in environments characterised by hazardous areas (potentially explosive atmospheres).

  • Power supply and galvanic separation unit for sensors and signal conditioners with a current output or a voltage output
  • 4 kVRMS galvanic separation between the sensor side and the monitor side
  • 50 VRMS galvanic separation between the power supply and the output signal (floating output)
  • μA to mV transfer function for long distance current-signal transmission, V to V transfer function for short-distance voltage-signal transmission
  • Certified for use in potentially explosive atmospheres
PARAMETER Value (Imperial | Metric)
Output type Voltage (2-wire)
Measurement system CA vibration, CP dynamic pressure, TQ proximity or VE velocity
Sensor or signal conditioner IPC704 signal conditioner (CA and CP sensors), CE sensors with a current output, IQS450 signal conditioner (TQ sensors) and VE210 sensor
Input signal range (sensor side) 0 to 20 mA or 0 to 20 VDC
Output signal range (monitor side) 2 to 20 VDC
Transfer function (sensitivity) 1 V/mA ±1%, 3.2 V/mA ±1%, 1 V/V ± % or −1 V/V ±1%
Transfer function (output offset voltage) 7 VDC ±0.2 VDC, 8 VDC ±0.2 VDC or 10 VDC ±0.2 VDC
Frequency range DC to 20000 Hz
Linearity <0.2%
Galvanic separation 4 kVRMS
Operating temperature range 32 to 158 °F | 0 to 70 °C
Hazardous area certifications Ex nA [ia Ga], AEx nA [ia Ga]