MI-631 Multispan Signal Isolator

MI-631 Multispan Signal Isolator receives 4-20mA process current inputs and provide isolated 4-20mA output signals. Each channel operates independently and is isolated from the others to prevent interaction between channels. Galvanic isolation eliminates ground loops, reduces noise, and blocks transient signals.

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  • Analog /Temperature/Voltage /Current/Resistance input
  • Analog output
  • With Dual output




Input type Voltage / Current / Potentiometer
Input Range
Voltage 0 to 10V DC/-5 to 5V DC

0 to 300V DC/0 to 300V AC

Current 4 to 20mA DC,0 to 20mA DC,
Potentiometer 0 to 10KΩ ( 3Wire / 2Wire )
Input Impedance
Current Input <100Ω
Voltage Input >100KΩ
CMRR >120 db ( Typical )
Temperature Co-efficient <100 PPM
Auxiliary Voltage 100 – 250V AC
Power Consumption less than 5VA
Power Dissipation
Power ON status LED RED
Isolation type Optical – 3 way
Isolation between supply and Input At least 2KV AC for 1 min.
Isolation between supply and Output At least 2KV AC for 1 min.
Isolation between Input and Output At least 2KV AC for 1 min.
Output type Voltage / Current
Output Range
Voltage 0 TO 10 V DC
Current 0 TO 20 mA / 4 To 20 mA DC
Response Time <150 ms
Accuracy ± 0.5% of FSD
Load Resistance

V Output mA Output


Load Current < 25mA Load Voltage < 10V

Transmitter Power Supply 24V DC ( 30mA capacity )
Output Impedance

Voltage Output

> 220Ω

Current Output

< 500Ω
Mounting Type Din Rail
Terminal Compliance RU, CQC, RoHS
Terminal Cable Size Barrier Type terminal Cable Size ( 2.5 mm2 )
Enclosure Material ABS ( Front & Back )
IP Rating IP 20
Size ( HxWxD ) mm 76 X 27 X 85
Weight (gm) 170