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 highfrequency
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