The MTT MS3707G is a slim plug-in distributor built specifically for 2-wire level gauges, supplying loop power to the gauge and taking its 4-20mA signal to reproduce as one or two galvanically isolated outputs for downstream control and monitoring equipment. Supplying the loop power itself removes the need for a separate transmitter power supply, and the isolated outputs protect receiving instruments from the field loop.
Where a dual-output configuration is used, both outputs stay isolated from each other, the input, and the power supply, letting one level gauge feed a control loop and an independent monitoring or logging system at the same time. Like the rest of the plug-in transmitter range, the MS3707G clips into its own socket base so the unit can be swapped for calibration or replacement in seconds 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 | 4-20mA DC from 2-wire level gauges |
| Input Resistance | 250Ω |
| Transmitter Power Output | 24-28V at 0% input; 18V min. at 100% input |
| Output 1 & Output 2 | 4-20mA, 0-20mA, 0-10mV, 0-100mV, 0-1V, 0-10V, 0-5V, or 1-5V DC (single or isolated dual output) |
| Output Load | Up to 750Ω for a single 4-20mA output; 550Ω/350Ω for dual outputs |
| Zero Adjustment | ±10% of span |
| Span Adjustment | 10-100% of span |
| Isolation | 4-way isolation between input, outputs, power, and ground |
| Power Supply | 100-240V AC (50/60Hz), 24V DC, or 100-240V DC |
| Accuracy | Better than ±0.1% of span (at 25°C±5°C) |
| Temperature Effect | ±0.2% of span per 10°C change |
| Response Time | 200ms maximum (0-90%) |
| Housing | ABS resin (UL 94V-0) |
| Dimensions (W x H x D) | 29mm x 86mm x 125mm |
| Weight | Main unit 120g; socket 80g |
| Mounting | Wall or DIN rail mounting, plug-in socket base |
| Operating Temperature | -5 to 55°C ambient |
Frequently Asked Questions
What is the MTT MS3707G used for?
It’s a distributor built for 2-wire level gauges: it supplies loop power to the gauge and reproduces its 4-20mA signal as one or two galvanically isolated outputs, so you don’t need a separate power supply for the gauge.
What’s the difference between the MS3707G and the standard MS3707?
Both are distributors that power a 2-wire field device and isolate its output. The MS3707G is matched to level gauges specifically, with wider selectable output ranges and a wider zero/span adjustment (±10% zero, 10-100% span) to suit typical level-gauge configurations.
Can the MS3707G feed two separate systems from one level gauge?
Yes, in its dual-output configuration — both outputs are isolated from each other, the input, and the power supply, so one level gauge can feed a control loop and a separate monitoring or logging system at the same time.
What output signal ranges does the MS3707G support?
A wide choice including 4-20mA, 0-20mA, and several DC voltage ranges from 0-10mV up to 0-10V, so it can be matched to whatever your receiving instrument expects.
How do I know if the MS3707G is right for my level gauge?
Send us your level gauge’s power requirement and output signal, and the range your receiving equipment needs, and we’ll confirm the right configuration.
Download MTT MS3707G Slim Plug-In Distributor for Level Gauges information here
Spec Sheet: MTT MS3707G Spec Sheet
Manual: MTT MS3707G Manual
