Dwyer MS 331 Magnesense Differential Pressure Transmitter

Dwyer MS 331 Magnesense Differential Pressure Transmitter About

Dwyer Instruments MS-331

Magnesense Differential Press. Trans., 0-10 V, range 10 in H2O

The Series MS Magnesense Differential Pressure Transmitter is an extremely versatile transmitter for monitoring pressure and air velocity. This compact package is loaded with features such as: field selectable English or metric ranges, field upgradeable LCD display, adjustable dampening of output signal (with optional display) and the ability to select a square root output for use with Pitot tubes and other similar flow sensors. Along with these features, the magnetic sensing technology provides exceptional long term performance and enables the Magnesense transmitter to be the solution for a myriad of pressure and flow applications. Field Upgradeable LCD. No need to order two separate transmitters. Simply stock a transmitter and display and you can satisfy any customer's requests. Simply remove cover and snap the LCD onto the board. Field Selectable Ranges in metric or English. Lowers stock and inventory requirements. You'll always have the right transmitter for every job. Digital Push Button Zero and Span. Reduces calibration time significantly over other transmitters that utilize potentiometers. Lowers maintenance time and costs. Adjustable Digital Dampening smooths out unstable pressure fluctuations common in air flow applications. Field Selectable Air Velocity Mode for fan and blower applications. Unit provides square root output that accurately tracks fpm or m/s flow rate. No need for a smart programmable indicator or PLC to convert pressure to air flow. Reduces components and installation time lowering overall costs.

Product Highlights

0-10 V output

selectable range 10 in H2O. (2 kPa)

panel mount

Versatile Differential Pressure Monitoring

The MS 331s capacitive differential pressure sensor technology ensures consistent performance, even in demanding industrial or HVAC scenarios. Its instantaneous response time (<1s) and high overload protection (up to 10 times full span) make it suitable for dynamic air handling and filtration system monitoring.


Flexible Installation and User-Friendly Design

Thanks to its compact form (approx. 98 mm diameter), wall or surface mount capability, and support for any orientation, the MS 331 integrates effortlessly into existing systems. The LCD display, barbed connections for 1/4 OD tubing, and intuitive button-accessible adjustments streamline both setup and ongoing operation.


Rugged Construction and Wide Operating Range

Constructed from molded PC/ABS plastic and sealed with silicone, the MS 331 is built to endure field conditions (IP65 ingress protection). It operates effectively between 0 to 60C and is ready for storage in more extreme climates, ranging from -20 to 70Cproviding years of reliable service in industrial environments.