GSI127 244-127-000-017 galvanic separation unit-Colletplc

Description:

The GSI127 is a galvanic separation unit from Meggitt’s vibro-meter® product line. It 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 too), the IQS9xx signal conditioners used by TQ9xx proximity sensors (and older IQS4xx signal conditioners too), 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) vibration sensors, that is, the integrated electronics used by constant-current voltageoutput sensors such as the CE620 and PV660 (and older CE680, CE110I and PV102 sensors too).

The GSI127 galvanic separation unit is a versatile unit that can is 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. More generally, it may be used to supply any electronic system (sensor side) having a consumption of up to 22 mA. The GSI127 also rejects a large amount of the frame voltage that can introduce noise into a measurement chain. (Frame voltage is the ground noise and AC noise pickup that can occur between the sensor case (sensor ground) and the monitoring system (electronic ground)). In addition, its redesigned internal power supply results in a floating output signal, eliminating the need for an additional external power supply such as an APF19x.

The GSI127 is certified to be installed in an Ex Zone 2 (nA) when supplying measurement chains installed in Ex environments up to Zone 0 ([ia]). The unit also eliminates the need for additional external Zener barriers in intrinsic safety (Ex i) applications. The GSI127 housing features removable screwterminal connectors that can unplugged from the main body of the housing to simplify installation and mounting. It also features a DIN-rail mounting adaptor that allows it to be mounted directly on a DIN rail.

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Technical specification, manuals and data sheets

SPECIFICATIONS:

Power supply (to GSI127)
Input voltage range
:
18 to 30 VDC
Current consumption (with nominal 24 VDC supply)
•No load on sensor side
:
≤80 mA
•20 mA load on sensor side
:
≤120 mA
Input signal (sensor side)
Supply
•Ordering options B0x
:
20 VDC ±1 VDC
•Ordering options B21
:
8 mA ± 0.5 mA
Impedance
•Ordering options B0x
:
≤30 Ω
•Ordering options B21
:
≥50 kΩ
Dynamic range
•Ordering options B0x
:
0 to 20 mA
•Ordering options B21
:
0 to 20 VDC
Overload protection
•Ordering options B0x
:
26 mA
•Ordering options B21
:
22 VDC
Output signal (monitor side)
Output voltage dynamic range (with 10 kΩ load)
:
2 to 20 VDC
Output impedance
:
20 Ω, protected against short-circuits
Power supply voltage rejection ratio
•10 Hz to 400 Hz
:
≥60 dB
•400 Hz to 100 kHz
:
≥30 dB
Output signal offset drift
with temperature
:
≤2 mV/°C
Output signal sensitivity drift with temperature
:
≤50 ppm/°C
AC output signal residual noise
:
≤3.5 μVRMS/√Hz