GSI127 galvanic separation unit
- Power supply and galvanic separation unit for sensors and/or signal conditioners with a current or 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.
- μA to mV transfer function for long-distance signal transmission, V to V transfer function for short-distance signal transmission.
- Also compatible with industry-standard IEPE sensors and 4 to 20 mA loop-powered sensors.
- Certified for use in potentially explosive atmospheres (Ex) and/or safety-related applications (SIL).
Description
The GSI127 galvanic separation unit is designed for operation with the signal conditioners, charge amplifiers and electronics (attached or integrated) used by various vibro-meter measurement chains and/or sensors.
Compatible devices include the IPC707 signal conditioners (charge amplifiers) used by CAxxx piezoelectric accelerometers and CPxxx dynamic pressure sensors (and older IPC704 signal conditioners), the IQS9xx signal conditioners used by TQ9xx proximity sensors (and older IQS4xx signal conditioners), the attached or integrated electronics used by CExxx piezoelectric accelerometers, and the integrated electronics used by the VE210 velocity sensor. The GSI127 is also compatible with industry-standard IEPE (integrated electronics piezo electric) sensors such as the CE620, CE630 and PV660 vibration sensors, and 4 to 20 mA loop-powered sensors such as the CE687 and PV685 vibration sensors.
The GSI127 is a versatile device that can be used for the transmission of high-frequency AC signals over long distances in measurement chains using current-signal transmission or as a safety barrier unit in measurement chains using voltage-signal transmission. Further, it also rejects a large amount of the frame voltage that can introduce noise into a measurement chain. It has a factory-configurable transfer function (with variants defined by ordering option code) and provides a voltage output signal suitable for transmission to the monitoring system.
The GSI127 is designed and built for long-term use, and is available in standard versions and in Ex versions certified for use in potentially explosive atmospheres (hazardous areas). In addition, it incorporates diagnostics that automatically and remotely indicates the health/status of the measurement chain so you always know when measurements can be trusted. The diagnostics (SIL 2 “by design”) bring enhanced reliability and significant risk reduction, making the GSI127 suitable for use in safety-related applications (functional safety contexts).
Features
- Power supply and galvanic separation unit for sensors and/or signal conditioners with a current or 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.
- Also compatible with industry-standard IEPE sensors and 4 to 20 mA loop-powered sensors, including vibration sensors/transmitters.
- Certified for use in potentially explosive atmospheres (hazardous areas).
- Suitable for use in functional safety contexts: SIL 2 in accordance with IEC 61508.
Additional information
| Output type | Voltage (2-wire) |
|---|---|
| Measurement system | CA vibration, CP dynamic pressure, TQ proximity, VE velocity, CE6xx and PV6xx vibration/velocity, 4 to 20 mA loop-powered sensors/transmitters |
| Sensor or signal conditioner | Industry-standard IEPE sensors and 4 to 20 mA loop-powered sensors/transmitters, IPC70x signal conditioners (CA and CP sensors), IQS9xx/IQS45x signal conditioners (TQ sensors), VE sensors and CE sensors with a current output |
| Input signal range (sensor side) | 0 to 20.75 mA or 0 to 20.3 V (DC) |
| Output signal range (monitor side) | 0.8 to 20.8 V (DC) |
| Transfer function (sensitivity) | 0.5 V/mA, 1 V/mA, 3.2 V/mA, 1 V/V or −1 V/V ±1% |
| Transfer function (output offset voltage) | 0, 7, 8 or 10 VDC ±0.2 VDC |
| Frequency range | DC to 20000 Hz |
| Linearity | <0.2% |
| Galvanic separation | 4 kVRMS between the sensor side and monitor side, 50 VRMS between the power supply and output signal |
| Operating temperature range | −4 to 158 °F | −20 to 70 °C |
| Hazardous area certifications | Ex ec [ia Ga] |
The following downloads are available for this product:
- GSI127 galvanic separation unit – product update [ Replacement and discontinuation letters ]
- GSI127 galvanic separation unit data sheet (newer version, PNR 244-127-000-021)
- GSI127 galvanic separation unit data sheet (older version, PNR 244-127-000-017)
- LCIE 13 ATEX 3037 X Ex certificate (Europe) – GSI127 (newer version, PNR 244-127-000-021)
- LCIE 13 ATEX 3037 X Ex certificate (Europe) – GSI127 (older version, PNR 244-127-000-017)
- IECEx LCIE 13.0026X Ex certificate (International) – GSI127 (newer version, PNR 244-127-000-021)
- IECEx LCIE 13.0026X Ex certificate (International) – GSI127 (older version, PNR 244-127-000-017)
- cCSAus 70001999 Ex certificate (North America) – GSI127
- CML 21 UKEX 4542 X Ex certificate (United Kingdom) – GSI127
- KGS 17-GA4BO-0325X Ex certificate (South Korea) – GSI127
- EAЭC RU C-CH.AД07.B.03008/21 Ex certificate (Russian Federation) – GSI127
- 244-127-000V017 product drawing [ LOGIN required ]
- Vibration measurement chains using CAxxx piezoelectric accelerometers installation manual [ LOGIN required ]
- Pressure measurement chains using CPxxx piezoelectric pressure sensors installation manual [ LOGIN required ]
- Vibration measurement chains using CExxx or PVxxx piezoelectric sensors installation manual [ LOGIN required ]
- Vibration measurement chains using CVxxx or VExxx velocity sensors installation manual [ LOGIN required ]
- Proximity measurement systems using TQ9xx proximity sensors installation manual [ LOGIN required ]
- Proximity measurement systems using TQ4xx proximity sensors installation manual [ LOGIN required ]
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