The MTT MS3767 Slim Plug-In Temperature/Pressure Compensator corrects a flow measurement for variations in process temperature, pressure, or differential pressure so that the resulting reading reflects true compensated flow rather than a raw, uncorrected signal. Flow calculations based on differential pressure or velocity are sensitive to the density of the fluid being measured, and density itself shifts with temperature and pressure, so a compensator like the MS3767 is what keeps a flow total accurate as process conditions drift throughout the day.
Multiple compensation equations are available, including combined temperature and pressure compensation as well as temperature-only variants with or without square-root extraction, so the module can be matched to exactly the correction the application calls for. Front-accessible selector switches and trimmers let the compensation parameters be configured on site, and configurable dropout and clamping levels help protect against erroneous low-flow readings. As with other MS-series modules, galvanic isolation between input, output, and power keeps the compensated signal free of noise and ground-loop interference.
| Input Range | 0 to 120% |
| Current Input Options | 4-20mA (standard, 250Ω), 2-10mA, 1-5mA, 0-20mA, 10-50mA, or custom |
| Voltage Input Options | 0-1V, 0-10V, 0-5V, 1-5V, ±10V, ±5V, or custom |
| Max Allowable Input | 40mA DC max (current); 30V DC max (voltage) |
| Output | Current: 4-20mA DC or 0-20mA DC; Voltage: 0-10mV to 0-5V, ±1V to ±10V, or custom |
| Output Load | 750Ω max for 4-20mA current output |
| Adjustment | Approx. ±5% of span, zero and span, via front trimmers |
| Accuracy | Input accuracy ±0.1% of span; output accuracy ±0.2% of span |
| Response Time | 1s max (0-90%, step input at 100%) |
| Temperature Effect | Better than ±0.2% of span per 10°C change |
| CMRR | 100dB min. (500V AC, 50/60Hz) |
| Isolation | 4-way isolation between input, output, power, and ground; 100MΩ min. insulation resistance @500V DC; 2000V AC dielectric strength for 1 minute |
| Power Supply | 100-240V AC (50-60Hz), 24V DC, or 100-240V DC; 5.5VA max (AC) / 1.6W max (24V DC) / 6.0W max (100-240V DC) |
| Dimensions | W29 x H86 x D125mm |
| Weight | 130g (main unit) / 80g (socket) max |
| Terminals | M3.5 screw terminal with power terminal block cover; nickel-plated steel terminals, gold-plated brass contacts |
| Mounting | Wall or DIN rail mount |
| Operating Conditions | -5 to 55°C, 5-90% RH non-condensing |
| Storage Temperature | -10 to 60°C |
| Additional Features | Multiple compensation equations (temperature/pressure, temperature-only with/without square-root extraction); configurable dropout and clamping levels; LED status indicators |
Frequently Asked Questions
What is the MTT MS3767 used for?
It corrects a flow measurement for variations in process temperature, pressure, or differential pressure so the resulting reading reflects true compensated flow rather than a raw, uncorrected signal. Flow calculations based on differential pressure or velocity are sensitive to fluid density, which shifts with temperature and pressure, so the MS3767 is what keeps a flow total accurate as process conditions drift throughout the day.
What kind of compensation does it perform?
Multiple compensation modes are available depending on which process variable is drifting, temperature-only, pressure-only, or a combined temperature and pressure correction, applied to the incoming flow-related signal before it reaches your totalizer or DCS.
What input and output signal types does it accept?
Input accepts a range of current options (4-20mA standard, 2-10mA, 1-5mA, 0-20mA, 10-50mA, or custom) or voltage options (0-1V, 0-10V, 0-5V, 1-5V, ±10V, ±5V, or custom). Output is current (4-20mA or 0-20mA) or voltage across several standard spans. Tell us your flow, temperature, and pressure signal types and we can confirm the configuration.
How fast does it respond to changing input?
1 second max for a 0-90% step input, fast enough to track normal process temperature and pressure drift without lagging the flow reading.
How do I know if the MS3767 is right for my application?
If your flow measurement needs correcting for temperature, pressure, or differential pressure variation to stay accurate, the MS3767 applies that compensation before the signal reaches your totalizer. Send us your flow signal type plus the temperature and/or pressure inputs available, and we can confirm the right configuration before you order.
Download MTT MS3767 Slim Plug-In Temperature/Pressure Compensator information here
Spec Sheet: MTT_SpecSheet1_MS3767_Rev230_E
Manual: MTT_Manual1_MS3767_Rev150_E
