The MTT MS3713 is a slim plug-in square-root extractor that linearizes a nonlinear DC current or voltage signal into a standard, straight-line output. It is most commonly paired with a differential pressure transmitter on an orifice-plate flow measurement, where the pressure signal rises with the square of flow rate; the MS3713 takes the square root of that signal so the output tracks flow rate directly, letting downstream displays, controllers, and totalizers read flow linearly without extra calculation.
Like the rest of the plug-in transmitter series, the MS3713 clips into its own socket base for fast swap-out during calibration or maintenance without disturbing the field wiring, and its front-panel zero and span trimmers make fine adjustment straightforward. A second isolated output is available for feeding an independent monitoring or logging system, and flexible AC or DC power plus wall or DIN rail mounting make it easy to fit into an existing panel.
| Input (Current) | 0-100mA range, 100µA to 100mA span |
| Input (Voltage) | 0-300V range, 200mV to 300V span |
| Input Resistance | 10Ω to 250Ω (current, range dependent); 1MΩ min. (voltage) |
| Max Continuous Input | 40mA (current) or 30V (voltage) |
| Output | 4-20mA, 0-20mA, or custom current; 10mV to 20V, ±1V to ±10V voltage |
| Output Load | 750Ω max. (4-20mA single); 550Ω/350Ω max. (dual current) |
| Adjustments | ±5% zero and span, front-panel trimmers |
| Accuracy | Better than ±0.2% of span (1-100% input, at 25°C±5°C) |
| Temperature Effect | ±0.2% of span per 10°C change |
| Response Time | 120ms max. (0-90%, step input at 100%) |
| CMRR | 100dB min. (500V AC, 50/60Hz) |
| Isolation | 4-way isolation between input, output 1, output 2, and power |
| Insulation Resistance | 100MΩ min. at 500V DC |
| Dielectric Strength | 2000V AC for 1 minute |
| Power Supply | 100-240V AC, 24V DC (±10%), or 100-240V DC |
| Power Consumption | 5.5VA max. (AC), 1.6W max. (24V DC), 6.0W max. (DC), single output |
| Dimensions | W29 × H86 × D125mm |
| Weight | 120g max. (main unit), plus 80g max. socket |
| Mounting | Wall or DIN rail mounting |
| Terminals | M3.5 screw terminals, 0.8-1.0 Nm torque |
| Operating Temperature | -5 to 55°C |
| Operating Humidity | 5 to 90% RH, non-condensing |
Frequently Asked Questions
What is the MTT MS3713 used for?
It’s a square-root extractor, most often paired with a differential pressure transmitter on an orifice-plate flow measurement. The DP signal rises with the square of flow rate, so the MS3713 takes the square root of that signal and outputs a straight, linear flow signal to your display, controller, or totalizer.
What input and output signal ranges does the MS3713 support?
It accepts current inputs from 100µA to 100mA span or voltage inputs from 200mV to 300V span, and outputs standard signals such as 4-20mA current or a scaled DC voltage, with front-panel zero and span trimmers for fine adjustment.
Do I need a square-root extractor if my flow transmitter already outputs a linear signal?
No — if your DP transmitter or flowmeter already linearizes the signal internally, you don’t need the MS3713. It’s for cases where the raw DP signal is still in its squared, nonlinear form and needs converting before it reaches your control system.
Can the MS3713 provide two separate outputs?
Yes — a second isolated output is available, so the linearized flow signal can feed a controller and a separate monitoring or logging system at the same time.
How do I know if the MS3713 is the right model for my application?
Send us the transmitter or DP cell’s input signal range and the output signal your control system expects, and we can confirm the MS3713 will linearize it correctly before you order.
Download MTT MS3713 Slim Plug-In Square-Root Extractor information here
Spec Sheet: SpecSheet1_MS3713_Rev290_E.pdf
Manual: Manual1_MS3713_Rev140_E.pdf
