The MTT MS3701F is a slim plug-in thermocouple temperature transmitter built for fast response, mounted on a plug-in base socket for quick swap-out without rewiring. It accepts thermocouple types K, E, J, T, B, R, S, N, or custom types (temperature range depends on type, e.g. Type K: 0-1350°C).
Output is 0~20mA DC, 4~20mA DC, or 0~10mV to ±10V DC, available as a single output or an isolated dual output, with 4-way isolation between input, output 1, output 2, and power. Response time is 500µs max (0-90%) with a 100% step input – much faster than a standard thermocouple transmitter, useful where the process temperature changes quickly. Accuracy is better than ±(0.1% of span + 0.5°C + linearity error), with temperature effect of ±0.2% of span per 10°C change and CMRR of 100dB minimum.
The unit mounts on wall or DIN rail via a plug-in socket base, with M3.5 screw terminals. Power supply is flexible: 100-240V AC (50/60Hz), 24V DC ±10%, or 100-240V DC.
Main unit weighs up to 120g and the socket up to 80g, with overall dimensions of 29mm × 86mm × 125mm. It is rated for -5 to 55°C ambient operation (-10 to 60°C storage) and 5-90% RH non-condensing.
| Input Types | Thermocouple types K, E, J, T, B, R, S, N, or custom (temperature range depends on type, e.g. Type K: 0-1350°C) |
| Output | 0-20mA DC, 4-20mA DC, or 0-10mV to ±10V DC (single or isolated dual output) |
| Isolation | 4-way isolation between input, Output 1, Output 2, and power |
| Power Supply | 100-240V AC (50/60Hz), 24V DC ±10%, or 100-240V DC |
| Accuracy | Better than ±(0.1% of span + 0.5°C + linearity error) |
| Response Time | 500μs maximum (0-90%) with a 100% step input (fast-response model) |
| Temperature Effect | ±0.2% of span per 10°C change |
| CMRR | Minimum 100dB |
| Dimensions (W x H x D) | 29mm x 86mm x 125mm |
| Weight | Main unit up to 120g; socket up to 80g |
| Mounting | Wall or DIN rail mounting, plug-in socket base |
| Terminals | M3.5 screw terminals |
| Operating Temperature | -5 to 55°C ambient (storage: -10 to 60°C) |
| Operating Humidity | 5-90% RH, non-condensing |
Frequently Asked Questions
What is the MS3701F used for?
It reads a thermocouple signal and converts it into an isolated DC output in 500µs or less, for fast-reacting control loops and safety systems where the standard 160ms response time isn’t fast enough.
Can the MS3701F be used with AC power instead of 24V DC?
Yes. The MS3701F accepts 100-240V AC, 24V DC, or 100-240V DC, so it can be powered directly from panels that don’t have a dedicated 24V DC supply.
What’s the difference between the MS3701F and the MS3701?
The MS3701F has a fast 500µs response time, against the standard MS3701’s 160ms. Both cover the same thermocouple types and isolation. Choose the MS3701F only if your application genuinely needs the faster response — it costs more than the standard model.
Is the MS3701F still in production?
Yes, it’s an active model in MTT’s current MS3700 slim plug-in range.
Download MTT MS3701F Slim Plug-In Thermocouple Temperature Transmitter information here
Datasheet: MTT_SpecSheet_MS3701F_Rev140_E
Manual: MTT_Manual_MS3701F_Rev110_E
