Industrial signal conditioner


  • Converting 0-500Vac to 4-20mA
  • Galvanic isolation input and output
  • Power supplied from current loop
  • Monitoring current loop without interrupting it
  • Span and zero adjustment
  • Output overvoltage protection
  • High linearity and temperature stability
  • Short response time
  • 35mm DIN rail mounting


SCM 202 is a galvanic isolated transducer for 35mm DIN rail mounting that converts input – alternate voltage (0-500V AC), to 4-20mA current. Conversion is proportional and linear. Transducer is supplied from measurement loop since output connection (4/20mA current) is passive 2-wire. It is possible to adjust zero current and conversion span. By connecting voltmeter to test connectors it is possible to monitor loop current without interrupting it. SCM 202 signal conditioner is used for safe voltage measuring motors, pumps, heaters and other devices which are intended to use this voltage range.


Analog signal conditioners convert, isolate, and amplify signals. SCM202 can convert voltage signals to standard 4 to 20 mA signals. Also, it can isolate multiple field-measurement devices on a common power supply to help prevent interference that can occur due to ground loops or common-mode noise.


Accuracy±0.1% of full range, typical (for 2-100%) for sinusoidal input
Temperature stability±0.02%/oC
Response time220 ms (0-98%)
Output voltage ripple0.1% of full range RMS
Frequency range40-500Hz
Galvanic isolation2.5KV RMS in 1 minute
Loop power supply10-32VDCc
Output current4-20mA
Test tap40-200mV represents 4-20mA (shunt 10ohm ±1%)
Output over-voltage protection33V tranzorb
Output over-current protectionslow fuse 100mA 20x5mm
Current loop resistanceRmax(ohms)=(Vsupply-10)/0.02
Zero adjustment±25% min
Span adjustment±25% min
Operating temp. range0-70 ˚C without condensation
Storage temp. range-25 to 85 ˚C
Enclosureplastic 35x89x71mm, IP50
Mountingstandard 35mm rail


SCM20210023Industrial signal conditioner€65

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