Vibro-meterGSI127 galvanic separation unit

Connectors

Screw-terminal connector

(input, top)

: 4 contacts for sensor-side signals

Screw-terminal connector

(output, bottom)

: 4 contacts for monitor-side signals

Electrical connections

• IEC : 400 V / 0.2 to 2.5 mm2

• UL : 300 V / 10 A / 26 to 12 AWG

Clamping range (min. to max.) : 0.2 to 2.5 mm2 (26 to 12 AWG)

Tightening torque (min. to max.) : 0.4 to 0.6 N•m (0.30 to 0.44 lb-ft)

Note: The GSI127 features removal screw-terminal connectors that can unplugged from the main body of its housing to 

simplify installation and mounting.

Physical

Mounting : Suitable for TH 35 DIN rails (according to EN 50022 / IEC 60715). 

For example, TH 35-7.5 or TH 35-15. 

Electrical connections : Removable screw-terminal connectors (see Connectors on page 6)

Housing

• Material : Polyamide (PA 66 GF 30)

• Color : Standard versions: Gray.

Ex approved versions: Gray with the electrical connections to the sensor 

side indicated by blue.

Dimensions : See Mechanical drawings on page 7

Weight : 140 g (0.31 lb) approx.

MECHANICAL DRAWINGS

Notes

All dimensions are in mm (in) unless otherwise stated.

For standard versions of the GSI127, the housing is completely gray in color.

For Ex approved versions of the GSI127, the housing is gray in color but with a screw-terminal connector (top) for sensor-side signals (electrical connections) that is blue in color.

ORDERING INFORMATION 

To order please specify

Type Designation Part number (PNR)

GSI127 Galvanic separation unit

Notes

1. Only CExxx piezoelectric accelerometers with a current output signal require a GSI127. 

For example, CE134, CE281 and CE31x piezoelectric accelerometers.

2. A IPCxxx signal conditioner or VE210 velocity sensor with a current output signal is 

typically used for signal transmission over longer distances. For example, IPC707.

Note: For a IPC707 without diagnostics, the nominal current output signal (DC) is 

12 mA (→ 7 V). For a IPC707 with diagnostics, the nominal current output signal (DC) is 

13 mA (→ 8 V). Refer to the IPC707 data sheet for further information.

3. A IQS90x (or IQS4xx) signal conditioner with a current output signal is typically used for 

signal transmission over longer distances. For example, IQS900.

4. A IPCxxx signal conditioner with a voltage output signal is typically used for signal 

transmission over shorter distances. For example, IPC707.

Note: For a IPC707 without diagnostics, the nominal voltage output signal (DC) is

7 V. For a IPC707 with diagnostics, the nominal voltage output signal (DC) is 8 V.

Refer to the IPC707 data sheet for further information.

5. A IQS90x (or IQS4xx) signal conditioner or VE210 velocity sensor with a voltage output 

signal is typically used for signal transmission over shorter distances. For example, 

IQS900.

6. For use with IQS910 signal conditioner (“transmitter” with a 4 to 20 mA current-loop 

signal) or industry-standard 4 to 20 mA loop-powered sensors, that is, current-loop 

sensors/transmitters. For example, CE687 and PV685 vibration sensors.

7. For use with industry-standard IEPE (integrated electronics piezo electric) sensors, 

that is, constant-current voltage-output sensors. For example, CE620, CE630 and PV660 

vibration sensors.