The MTT MS3719 is a slim plug-in filter unit that removes unwanted frequency content from a voltage or current signal before it reaches downstream equipment. Whether the problem is high-frequency electrical noise riding on a measurement or slow drift that needs to be blocked, the MS3719 can be configured with a high-pass or low-pass Butterworth filter and a cutoff frequency to suit, so the signal that comes out the other end is clean and usable.
Selectable gain settings let it also boost a weak input as it filters, and both voltage and current outputs are available to match the receiving equipment. Like the rest of the plug-in transmitter series, the MS3719 clips into its own socket base for fast swap-out during calibration or maintenance without disturbing the field wiring, and flexible AC or DC power plus wall or DIN rail mounting make it easy to fit into an existing panel.
| Input | -10 to 10V, differential or single-ended |
| Input Resistance | 1MΩ min., with or without power |
| Max Input Voltage | ±30V DC continuous |
| Output | -10 to 10V or -20 to 20mA, selectable |
| Output Load | 2kΩ min. (voltage); 550Ω max. (current) |
| Adjustments | ±1.2% zero, ±1.0% span |
| Gain Settings | 1x, 2x, 10x, 50x, 100x, 300x (set at order) |
| High-Pass Filter | 1st, 2nd, or 4th-order Butterworth; 0.05Hz to 200Hz cutoff |
| Low-Pass Filter | 2nd, 4th, or 8th-order Butterworth; 1Hz to 10kHz cutoff |
| Cutoff Tolerance | ±10% (below 10Hz); ±5% (10Hz and above) |
| Passband Ripple | ±0.5dB |
| Accuracy | Better than ±0.1% of span (±10V DC output) |
| Temperature Effect | ±0.2% of span per 10°C change |
| Isolation | 3-way isolation between input/output, power, and ground |
| Insulation Resistance | 100MΩ min. at 500V DC |
| Power Supply | 100-240V AC, 24V DC (±10%), 100-240V DC, or optional external ±15V DC (50mA max.) |
| Dimensions | W29 × H86 × D125mm |
| Weight | 120g max. (main unit), plus 80g max. socket |
| Mounting | Wall or DIN rail mounting |
| Terminals | M3.5 screw terminals, 0.8-1.0 Nm torque |
| Operating Temperature | -5 to 55°C |
| Operating Humidity | 5 to 90% RH, non-condensing |
Frequently Asked Questions
What is the MTT MS3719 used for?
It’s a filter and amplifier unit for a voltage or current signal. It can be configured with a high-pass or low-pass Butterworth filter to remove unwanted frequency content — electrical noise, drift, or vibration — before the signal reaches your controller, recorder, or display.
What filter types and cutoff frequencies does the MS3719 support?
High-pass filters are available in 1st, 2nd, or 4th-order Butterworth with cutoffs from 0.05Hz to 200Hz, and low-pass filters in 2nd, 4th, or 8th-order Butterworth with cutoffs from 1Hz to 10kHz. Tell us what you need to filter out and we’ll help confirm the right order and cutoff.
Can the MS3719 amplify a weak signal as well as filter it?
Yes — it has selectable gain settings (1x, 2x, 10x, 50x, 100x, or 300x, set at order) so it can boost a weak input at the same time as filtering it.
Does the MS3719 output voltage or current?
Both are available — a -10 to 10V voltage output or a -20 to 20mA current output, selectable to match your receiving equipment.
How do I know what filter settings I need?
Send us your signal source, the frequency of the noise or drift you’re trying to remove, and the frequency range you need to keep, and we can help confirm the right filter type, order, cutoff, and gain before you order.
Download MTT MS3719 Slim Plug-In Filter Unit information here
Spec Sheet: SpecSheet1_MS3719_Rev210_E.pdf
Manual: Manual1_MS3719_Rev140_E.pdf
