A 4-20mA version of the Kemo DIN rail mounted filter is available, with 4-20mA input, and 4-20mA output.(NOTE 0-20mA units are also available).
The 4-20mA units combine Kemo's knowledge of signal filtering with a DIN rail case, screw connections, and a 24 V DC supply. With the combination of easy installation, and a wide range of filter responses the Kemo DIN Rail filters are an easy solution to many industrial 4-20mA signal problems.
Filters are available to cover a wide range of applications, general purpose noise reduction, anti-aliasing, signal reconstruction, and notch filters to reduce unwanted frequencies, as well as traditional Butterworth and Bessel filters. Input configurations are set by internal jumpers, the case opens without tools. Signal and power connections are made by standard screw terminals. 
The combination of easy of use, DIN rail industrial mounting, and a large range of filters and frequencies allows a very wide range of small signal problems to be solved using the Kemo DIN rail filters.
See our Applications section for a real problem solved using Kemo filters similar to the DIN Rail filters.
DIN Rail filters are available with 4-20mA input and output and 0-20mA input and output, please contact us with your detailed requirements.
Kemo have many years expertise in the field of small noisy signals, contact us if you have any questions, or require further information.

Summary Specification (Usual settings for 4-20mA unit)

Channels	1 per unit
Control	Manual - jumpers and DIP switches DR 1200 - Fixed frequency. DR 1600 - 255 steps set by DIP switch
Connectors	Screw terminals
Frequency	DR 1200  DC - >500 kHz DR 1600  255 steps x 'Base' frequencies of 1,2,5,10,20,50,100,200,500 Hz
Gain	not normally used in 4-20mA versions
Filters	DR 1200 - 1200 series filter modules DR 1600 - 1600 series filter modules
Filter Responses	01   Anti-aliasing, sharp >135 dB/Oct, flat to cut off, high and lowpass 03,  48 dB/Oct Butterworth, high and lowpass 05,  24 dB/Oct Butterworth, high and lowpass 07,  48 dB/Oct Bessel, high and lowpass 09,  24 dB/Oct Bessel, high and lowpass 41,  General Purpose, flat to cut off, linear phase, 52 dB/Oct, high and lowpass NQ10  Sharp Notch
Input Coupling	DC ( Can be operated AC coupled)
Input Mode	4-20mA into 400Ω across differential Input
Signal Level	4-20mA Input and Output Internally operates on 10 V pk (Usually with 'headroom')
Outputs	4-20mA Voltage output 2-10V
Power Indicator	LED power on indicator
Size	45 x 78 x 110 mm (1.8 x 3.1 x 4.3") mounts on standard 35 x 15 mm DIN rail
Power	9 - 30 V DC 2 watt typical (ideal for +24 V DC)

Ordering Information
Specify type DR 1200 Series fixed frequency OR DR 1600 variable frequency
Specify cut off frequency 1200 Series
Specify frequency range 1600 Series ('base frequency' to 255 x 'base frequency')
Specify filter type, highpass or lowpass
Specify 4-20mA input, and specify 4-20mA output.
If you need any help please contact us.