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Signal Isolators and Alarms

Series 100 Din-rail Or Gear Plate Mounting

Configurable Signal Isolator - SI132

Isolates common DC current and volt signals and provides a converter function that can change type and magnitude.
Common Applications - Signal conversion of common process signals, Prevention of ground and current loops, Protection from dangerous floating voltages, Filter of common mode noise.

Signal Isolator - SI139

Convert DC current or volt to DC signals.
Common Application - Signal conversion of DC signals, Prevention of ground and current loops, Protection from dangerous floating voltages, Filter of common mode noise.

Bipolar Signal Isolator - BSI134

Convert input signal to bi-polar DC signal.
Common Applications - Signal conversion, Hydraulic drive.

Single Trip Alarm - STA138

Relay output with adjustable set-point. Temperature alarm, Speed monitor, Weight monitor.
 

Series 200 Din-rail Mounting

Configurable Signal Isolator - SI231

Isolating signal converter for common process signals.
Common Applications - Signal conversion of common process signals such as 4-20mA, 0-20mA, 1-5Vdc, 0-5Vdc & 0-10Vdc, Prevention of ground and current loops, Protection from dangerous floating voltages, Filter of common mode noise.

Signal Powered Isolator - SPI232

The SPI232 provides galvanic isolation where common mode voltages or earth loop problems occur. The SPI232 is powered by the input signal, therefore it can only be offered in current input versions with a zero offset. (4-20mA, 10-50mA). The input signal is converted into an AC and transferred to the output using a transformer. This ferrite transformer is the input output isolation device. The transformer output is rectified and load matched. Typical input/output configuration is 4-20mA to 4-20mA, but can be 4-20mA to 1-5V for example, by using different output terminals.A green L.E.D. on the module front gives a clear indication of input signal and will change its intensity in relation to input signal level. Load trim adjustment (full scale) is conveniently placed on the module front. Zero tracking is automatic and requires no adjustment. Facility for in-process monitoring is provided for input and output. INPUT: Terminal 1(+) to Test Socket (-) 20mA = 200mV. OUTPUT: Terminal 8(+) to Terminal 6(-) 20mA = 200mV.

Dual Process Alarm - DPA202

Dual relay output with adjustable set-point.
Common Applications - Process monitor.