The MTT MS3738 is a slim plug-in manual setter that generates a fixed, adjustable DC output for calibration, testing, and simulation. A 3-digit LED display shows the current setting, and simple up and down push buttons dial the output anywhere across the range, with a press-and-hold speeding up the change for quick adjustment over a wide span, or fine 0.1% steps for a precise setpoint.
It is a handy way to inject a known, stable test signal into a loop while commissioning instrumentation, checking a controller’s response, or simulating a transmitter that is not yet installed, without needing a separate bench calibrator. A second isolated output is available for feeding two circuits from the same setting at once. Like the rest of the plug-in transmitter series, the MS3738 clips into its own socket base for fast swap-out during calibration or maintenance 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.
| Output | 0-20mA DC, 4-20mA DC, 0-10V DC, ±10V DC, or other custom ranges; single or dual isolated output |
| Adjustment Range | -10% to +105% of span, in 0.1% increments |
| Adjustment Method | Up/down push buttons with 3-digit LED display; press-and-hold speeds up the change |
| Accuracy | Better than ±0.1% of span (at 25°C±5°C) |
| Temperature Effect | ±0.15% of span per 10°C change |
| Isolation | Isolation between output(s), power, and ground |
| Insulation Resistance | 100MΩ min. at 500V DC |
| Power Supply | 100-240V AC, 24V DC, or 100-240V DC |
| Power Consumption | 6.0-7.2W max., depending on configuration |
| Dimensions | W29 × H86 × D125mm |
| Weight | 120g max. (main unit), plus 80g max. socket |
| Mounting | Wall or DIN rail mounting |
| Terminals | M3.5 screw terminals |
| Operating Temperature | -5 to 55°C |
| Operating Humidity | 5 to 90% RH, non-condensing |
Frequently Asked Questions
What is the MTT MS3738 used for?
It’s a manual setter that generates a fixed, adjustable DC output for calibration, testing, and simulation. It’s a handy way to inject a known, stable test signal into a loop, check a controller’s response, or simulate a transmitter that isn’t installed yet, without a separate bench calibrator.
How do I adjust the output?
Up and down push buttons dial the output across the range, from -10% to +105% of span, in 0.1% steps. A 3-digit LED display shows the current setting, and holding a button down speeds up the change for quick adjustment over a wide span.
What output ranges does the MS3738 support?
Standard ranges include 0-20mA, 4-20mA, 0-10V, and ±10V DC, with other custom ranges available. Tell us the output signal your application needs and we can confirm.
Can the MS3738 feed two circuits at the same setting?
Yes — a second isolated output is available, so the same set value can feed two separate circuits at once.
How do I know if the MS3738 is right for my application?
If you need a stable, adjustable test signal for commissioning, calibration, or simulating a transmitter, the MS3738 is built for that. Send us the output signal and range you need and we can confirm before you order.
Download MTT MS3738 Slim Plug-In Manual Setter information here
Spec Sheet: SpecSheet1_MS3738_Rev270_E.pdf
Manual: Manual1_MS3738_Rev140_E.pdf
