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Mighty Module Model DM4391
4-20 mA Input/Output DIN Rail Loop Powered Isolator

DM4391-1
Input  (+)
Input  (-)
Output  (+)
Output  (-)
DM4391-2
Input 1  (+)
Input 1  (-)
Output 1  (+)
Output 1  (-)
Input 2  (+)
Input 2  (-)
Output 2  (+)
Output 2  (-)
4-20 mA,Input,Output,DIN Rail,Loop Powered Isolator,Model DM4391,Wilkerson Instrument

4-20 mA,Input,Output,DIN Rail,Loop Powered Isolator,Model DM4391,Wilkerson Instrument

Features

4-20 mA,Input,Output,DIN Rail,Loop Powered Isolator,Model DM4391,Wilkerson Instrument Provides a Fully Isolated 4-20 mAdc Output Proportional to 4-20 mAdc Input
4-20 mA,Input,Output,DIN Rail,Loop Powered Isolator,Model DM4391,Wilkerson Instrument Operating Power Derived from the Input Current
4-20 mA,Input,Output,DIN Rail,Loop Powered Isolator,Model DM4391,Wilkerson Instrument Single or Dual Channel (DM4391-1, DM4391-2)
4-20 mA,Input,Output,DIN Rail,Loop Powered Isolator,Model DM4391,Wilkerson Instrument Plug-in Terminal Blocks
4-20 mA,Input,Output,DIN Rail,Loop Powered Isolator,Model DM4391,Wilkerson Instrument Standard DIN rail Mount With Easy Snap-on Snap-off
4-20 mA,Input,Output,DIN Rail,Loop Powered Isolator,Model DM4391,Wilkerson Instrument User Write-on Label
4-20 mA,Input,Output,DIN Rail,Loop Powered Isolator,Model DM4391,Wilkerson Instrument Connections Readily Accessible From The Front
4-20 mA,Input,Output,DIN Rail,Loop Powered Isolator,Model DM4391,Wilkerson Instrument Permanent Warranty

Description

The DM4391 is a loop powered isolator that provides an isolated 4-20 mA output proportional to a 4-20 mA input.

All operating power for the circuit is derived from the 4-20 mA input current.

The product is useful for breaking ground loops and for creating a 4-20 mA output in locations where primary power is not available.

A unique feedback system allows the DM4391 to achieve the same linearity as powered isolators and to drive loads from 0 ohms to 1000 ohms without affecting linearity.

The product is available as a single channel or a dual channel unit. The dual channel unit has two totally separate circuits that are fully isolated from each other.

Connections are made via two 4-pin plug-in terminal blocks. These terminal blocks allow the product to be removed without unwiring the connections.

Typical Applications

Eliminates ground loops and common mode signals in 4-20 mA current loops for isolation, buffering, noise reduction, especially where line power is NOT available.

Mounting

The module mounts on a standard H-35 DIN rail. A spring latch holds it in place. The module is demounted by using a screw driver to release the latch at the bottom of the module.

Specifications

INPUT
4-20 mA

INPUT VOLTAGE DROP
5+(I(mA)*(Load+76.5)/850)

Typical Drop

Drop (V)
6.8
9.2
12.7
18.6
24.5
30.3
Load(ohms) at 20 mA
0
100
250
500
750
1000

OUTPUT
Output Current
  4-20 mA

Drive Capability
  0 to 1000 ohms

Input to Output Linearity
  0.02% of span

Output Ripple
  (peak to peak)
  <0.1% of span

ISOLATION, OUTPUT / INPUT
Breakdown
  >1000 VAC RMS Sinewave
Resistance
  >500 megohms

OPERATING TEMPERATURE
 14F to 140F
-10C to  60C

TEMPERATURE STABILITY
(0.02% of span)/C

COMMON MODE REJECTION
>100 dB, DC to 60 Hz

METEX CORPORATION LIMITED

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Metex Corporation Limited has been providing superior products and services to the process control, chemical treatment, waste water, industrial and manufacturing industries for over 25 years. It is our goal to continually provide our customers with the best possible equipment, technology, and service.

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