Dwyer MS 121 Magnesense Differential Pressure Transmitter

About Dwyer MS 121 Magnesense Differential Pressure Transmitter

Dwyer Instruments MS-121-LCD

Differential Pressure Xmitter 0.5"H2O,Panel Mount,LCD

 

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

4-20 mA output

selectable range 0.1", 0.25"

0.5 in H2O. (25, 50, 100 Pa)

panel mount

with LCD

Reliable Differential Pressure Measurement

The Dwyer MS 121 transmitter provides highly accurate measurement of differential pressure in air and compatible gases, supporting a scale range up to 250 Pa. Its advanced electronic, solid-state sensor ensures consistent results and exceptional long-term stability, making it ideal for HVAC, clean rooms, and process industries.


Flexible Installation and Easy Configuration

Designed for hassle-free installation, the MS 121 supports mounting in any orientationwall or duct. User setup is simplified with push-button zero and span adjustments, while the screw terminal block allows straightforward electrical connections. Jumper selection lets users choose between 4-20 mA and 0-10 VDC outputs for seamless integration.


Robust, Industrial-Grade Construction

Built with a durable ABS plastic housing, silicone seals, and a corrosion-resistant matte finish, this pressure transmitter is engineered for tough environments. With an IP65 enclosure and an operating temperature range from -20C to 70C, it withstands challenging industrial conditions while maintaining accuracy and reliability.