The MTT MS3710-02 is a constant-current version of the plug-in potentiometer transmitter. Instead of exciting the sensor with a fixed voltage, it feeds the potentiometer a regulated excitation current, which keeps the measurement stable even when lead wire resistance changes with cable length or temperature. That makes it a good fit for position and level sensors mounted some distance from the control panel, where a voltage-excited transmitter would otherwise lose accuracy over the run.
As with the rest of the plug-in transmitter range, the MS3710-02 clips into its own socket base so it can be swapped out for calibration or replacement in seconds without disturbing the field wiring. Current or voltage output options are available, with a second isolated output for feeding an independent monitoring or control loop, and flexible AC or DC power plus wall or DIN rail mounting make it easy to fit into an existing panel.
| Input Range | 0-100Ω to 0-1kΩ (10Ω steps) or 0-1kΩ to 0-10kΩ (100Ω steps) |
| Excitation Current | Approx. 1mA (0-100Ω to 0-2kΩ ranges); approx. 0.2mA (0-2kΩ to 0-10kΩ ranges) |
| Output | Current (0-20mA, 4-20mA) or voltage (10mV to 20V span); single or dual output |
| Output Load | 750Ω max. (4-20mA single); 550Ω/350Ω max. (dual current) |
| Isolation | 4-way isolation between input, output 1, output 2, and power |
| Power Supply | 100-240V AC, 24V DC, or 100-240V DC |
| Accuracy | Better than ±0.2% of span (at 25°C±5°C) |
| Temperature Effect | Better than ±0.2% of span per 10°C change |
| Response Time | 170ms max. (0-90%, step input at 100%) |
| Dimensions | W29 × H86 × D125mm |
| Weight | 120g max. (main unit), plus 80g max. socket |
| Mounting | Wall or DIN rail mounting |
| Terminals | M3.5 screw terminals |
| Operating Temperature | -5 to 55°C |
| Operating Humidity | 5 to 90% RH, non-condensing |
Frequently Asked Questions
What is the MTT MS3710-02 used for?
It reads a potentiometer’s resistance and converts it into a standard current or voltage output, using constant-current excitation so the reading stays stable over long or temperature-varying cable runs.
What’s the difference between the MS3710-02 and the standard MS3710?
The standard MS3710 excites the potentiometer with a fixed voltage. The MS3710-02 uses a regulated excitation current instead, which cancels out the effect of lead wire resistance changing with cable length or temperature, making it more accurate over long runs.
What’s the difference between the MS3710-02 and the MS3710-01?
The MS3710-01 uses a 4-wire connection to cancel lead resistance. The MS3710-02 achieves a similar stability benefit through constant-current excitation on a simpler wiring scheme. Tell us your cable run length and wiring constraints, and we can confirm the right model.
Can the MS3710-02 provide two separate outputs?
Yes — a second isolated output is available, so one potentiometer can feed a control loop and a separate monitoring or logging system at the same time.
How do I know if I need the MS3710-02 instead of the standard MS3710?
If your potentiometer sensor is mounted some distance from the panel and you want excitation stability without running a full 4-wire connection, the MS3710-02 is the right choice. Send us your potentiometer range and cable run length and we can confirm.
Download MTT MS3710-02 Slim Plug-In Potentiometer Transmitter (Constant Current Model) information here
Spec Sheet: MTT MS3710-02 Spec Sheet
Manual: MTT MS3710-02 Manual
