Data EMI Filters for 4...20 mA Loops

Long data lines from and to 4...20mA loop sensors and actuators "collect" plenty of noise which causes data misreading, errors and other malfunction.  OnFILTER' data electromagnetic interference filters for such analog lines block EMI on long cables while providing pass through for the data.

We offer two models - for slow-changing signals (under 500 Hz) and for fast-changing signals (under 10 kHz).  The former provides the best noise suppression while the latter accommodates wider variety of sensors and actuators with faster data rate, such as HART (highway addressable remote transducer) protocol.  Most applications would use "slow" model - let us know if you have any questions. 

 

Data filters are easy to install and connect.  They are completely passive and require no power.

Panel Mounted Data Filters
Dual DIN Rail Mounted Data Filters
Data EMI filters for 4...20 mA loops
Data EMI filter connections with sensor
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Connections From Sensors
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DF/DFV420CD1

Up to 500 Hz Data Rate

DF420CD1 Attenuation.png

DF/DFV420CD2

Up to 10 kHz Data Rate

DF420CD2 Attenuation.png

Typical Filter Attenuation Data

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