MTT MS3717 Slim Plug-In Distributor (with Square-Root Extraction Function)

The MTT MS3717 is a slim plug-in distributor that both powers a 2-wire loop transmitter and linearizes its output in one unit. It supplies the loop voltage the transmitter needs, reads its 4-20mA signal, extracts the square root, and passes on a clean, isolated DC output. That combination makes it a natural fit for differential-pressure flow measurement, where a pressure transmitter on an orifice plate or venturi produces a signal that rises with the square of flow rate; the MS3717 turns that curve into a straight line so downstream displays and controllers can read flow directly.

Like the rest of the plug-in transmitter series, the MS3717 clips into its own socket base for fast swap-out during calibration or maintenance without disturbing the field wiring, and a second isolated output is available for feeding an independent monitoring or logging system. Flexible AC or DC power plus wall or DIN rail mounting make it easy to fit into an existing panel.

Input4-20mA DC from a 2-wire transmitter
Input Resistance250Ω
Transmitter Power Supply25V typical at 0% input; 18V typical at 100% input
Short-Circuit Protection26mA typical limit current
Output0-20mA or 4-20mA DC current, or 10mV to 20V DC voltage; single or dual isolated output
Output Load750Ω max. (4-20mA single output)
AccuracyBetter than ±0.2% of span (1-100% input, at 25°C±5°C)
Response Time85ms max. (0-90%, step input at 100%)
Temperature Effect±0.2% of span per 10°C change
CMRR100dB min. (500V AC, 50/60Hz)
Isolation4-way isolation between input, output 1, output 2, and power
Insulation Resistance100MΩ min. at 500V DC
Dielectric Strength2000V AC for 1 minute
Power Supply100-240V AC (50-60Hz), 24V DC (±10%), or 100-240V DC
Power Consumption7.5VA max. (AC), 2.4-2.9W max. (24V DC)
DimensionsW29 × H86 × D125mm
Weight120g max. (main unit), plus 80g max. socket
MountingWall or DIN rail mounting
TerminalsM3.5 screw terminals, 0.8-1.0 Nm torque
Operating Temperature-5 to 55°C
Operating Humidity5 to 90% RH, non-condensing

Download MTT MS3717 Slim Plug-In Distributor (with Square-Root Extraction Function) information here

Datasheet: MTT_SpecSheet_MS3717_Rev22_E

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