GSI130 244-130-000-20

GSI130 244-130-000-20

The GSI130 (244-130-000-20) is a galvanic separation unit designed to provide electrical isolation between sensors/signal conditioners and signal processing systems. It is suitable for two-wire transmission systems, supplying power to the sensors and signal conditioners while simultaneously reading their output signals.

In broader applications, the GSI130 can power any electronic system with a current consumption of less than 20 mA. The unit outputs a voltage signal proportional to the current consumed by the signal conditioner; this voltage signal can be used directly to analyze the conditioner's output.

The GSI130 module effectively prevents issues—such as ground loop interference—caused by voltage differences between the measurement point and the signal processing equipment. Using the GSI130 eliminates the need for Zener barriers, which would otherwise introduce additional voltage drops and limit both transmission line length and system dynamic range.

• Supply voltage: +24 V ±5%
• Ripple (100 Hz): 100 mV pp max.
• No-load power consumption: Approx. 20 mA
• Power consumption at 20 mA load: Approx. 60 mA
• Short-circuit power consumption: Max. 120 mA
• No-load output voltage (to conditioner): 18 V ±1 V
• Output voltage at 20 mA load: 16 V ±1 V
• Short-circuit current: 60 mA
• Passband: DC to 10 kHz ±0.5%, -1 dB @ 20 kHz
• Transfer function: 1 V/mA (factory setting, adjustable via potentiometer P1)
• Temperature drift < 200 ppm/°C
• Linearity: ±0.5% (within dynamic measurement range)
• DC signal component: Adjustable via potentiometer P2; Umin = +2 V, Umax = Supply voltage - 2.5 V
• Noise (max. residual signal): 12 mVpp at 5 mA DC; 25 mVpp at 12 mA DC
• Galvanic isolation (input to output) ≥ 4 kV RMS
• Electrical connections: 5 tabs, AMP-Faston type 6.3
• Operating temperature: 0°C to +55°C
• Storage temperature: -20°C to +70°C

In compressor condition monitoring systems within the petrochemical industry, the GSI130 powers CE series current-output accelerometers and transmits sensor signals over long distances to the data acquisition system in the control room. Its µA-to-mV conversion capability enables long-distance signal transmission—spanning hundreds of meters—without concerns regarding signal attenuation.

What is the difference between the GSI130 (244-130-000-20) and the GSI122?

The GSI122 and GSI130 belong to the same product series and share similar basic functions. The main difference is that the GSI122 is suitable for use in potentially explosive atmospheres, whereas the GSI130 is not. If operation in an explosion-proof zone is required, the GSI122—or its successor model, the GSI127—should be selected.

What types of sensor signals does the GSI130 support?

It supports 0-20 mA current signal and 0-20 VDC voltage signal inputs. It is compatible with CA, CE, PV, and VE series vibration sensors, CP series dynamic pressure sensors, and TQ series proximity sensors.

What is the warranty period?

Standard industrial warranty: 12 months; with proper installation and no overloading, the product has a service life of 5-10 years.