The MTT MS3706 is a slim plug-in strain gauge transmitter that powers a strain gauge, load cell, or pressure sensor bridge, reads its low-level millivolt output, and converts it into one or two isolated DC outputs suitable for standard control and monitoring equipment. Built-in bridge excitation removes the need for a separate power supply for the sensor, simplifying wiring in weighing, force-measurement, and pressure-sensing applications.
Where a dual-output configuration is used, both outputs stay isolated from each other, the input, and the power supply, letting one bridge sensor 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 MS3706 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 Types | Strain gauge, load cell, or pressure sensor bridge |
| Input Range | -200mV to +200mV DC |
| Input Span | 5mV to 400mV |
| Bridge Excitation | 5V DC (120Ω bridge) or 10V DC (350Ω bridge) |
| Maximum Input Voltage | 30V DC continuous |
| Output | 0-20mA DC, 4-20mA DC, or 10mV to 20V DC (single or isolated dual output) |
| Output Load | Up to 750Ω for a single 4-20mA output; 550Ω/350Ω for dual outputs |
| Isolation | Isolation between input, Output 1, Output 2, power, and ground |
| Power Supply | 100-240V AC (7.0VA max), 24V DC (2.1-2.4W), or 100-240V DC (7.2-8.4W) |
| Accuracy | Better than ±0.1% of span (at 25°C±5°C) |
| Response Time | 85ms maximum (0-90%) |
| Temperature Effect | ±0.2% of span per 10°C change |
| CMRR | Minimum 100dB |
| Insulation Resistance | 100MΩ minimum at 500V DC |
| Dielectric Strength | 2000V AC for one minute |
| 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 MS3706 used for?
It powers and reads a strain gauge, load cell, or pressure sensor bridge, and converts its low-level millivolt signal into a standard DC current or voltage output that a PLC, indicator, or recorder can use directly.
Does the MS3706 supply power to the sensor bridge?
Yes — it provides built-in bridge excitation (5V DC for a 120Ω bridge or 10V DC for a 350Ω bridge), so no separate excitation supply is needed for the sensor.
Can the MS3706 drive two separate systems from one sensor?
Yes, in its dual-output configuration — both outputs are isolated from each other, the input, and the power supply, so one bridge sensor can feed a control loop and a separate monitoring or logging system at the same time.
What’s the difference between the MS3706 and the MS3706B?
These are variants within the MS3706 strain gauge transmitter family with different input span or accuracy specs. Tell us your bridge type and signal range, and we can confirm the right variant.
How do I know if the MS3706 is right for my application?
Send us your sensor’s bridge resistance, rated output (mV/V), and the output signal your downstream equipment needs, and we’ll confirm the correct model and excitation setting.
Download MTT MS3706 Slim Plug-In Strain Gauge Transmitter information here
Spec Sheet: MTT MS3706 Spec Sheet
Manual: MTT MS3706 Manual
