MS2-W111

Overview

The Dwyer Instruments MS2-W111 is a Magnesense II differential pressure transmitter designed for HVAC applications. It measures air and non-combustible gas pressures with high stability. The unit features a 5-digit LCD display and supports both 2-wire 4-20 mA current output and 3-wire 0-5 VDC or 0-10 VDC voltage outputs. It operates on 10-35 VDC (2-wire) or 17-36 VDC / 21.6-33 VAC (3-wire). Accuracy is ±1% FS for ranges of 0.25" to 25", and ±2% FS for lower or bi-directional ranges. Response time is adjustable from 0.5 to 15 seconds.

Feature Summary

• Simultaneous transmission of universal current and voltage signals via removable European-style terminal blocks
• Magnesense magnetic sensing technology ensures superior long-term performance and stability
• Field-adjustable damping allows customizable response times for specific application needs
• Rotatable 5-digit LCD display provides clear reading in various mounting orientations

Applications

• Monitoring and controlling differential pressure in HVAC systems
• Measuring static pressure in commercial and professional building ducts
• Filter status monitoring in air handling units
• Indoor pressure monitoring in pharmaceutical, semiconductor, and cleanroom environments

Procurement Notes

Verify the specific wiring configuration required for your installation, as the MS2-W111 supports both 2-wire and 3-wire setups with different power and output specifications. Confirm that the process medium consists only of air or non-combustible compatible gases to ensure sensor integrity. Check that the operating temperature remains within the specified -18°C to 66°C range. Ensure the tubing connections match the 3/16" ID requirement for proper pressure transmission.

Selection Notes

Select the MS2-W111 when simultaneous current and voltage outputs are necessary for legacy and modern control systems. This model is suitable for applications requiring high accuracy in low-range differential pressure measurements. Consider this unit if field-adjustable damping and a digital display are preferred over fixed configurations. It serves as a direct upgrade for older MS series transmitters needing enhanced stability and versatile signaling options.

Part Context

The MS2-W111 belongs to the MS2 Series Magnesense II family, which succeeded the original MS2 line. These transmitters are widely used in building automation and industrial controls. The series is known for replacing mechanical gauges with electronic solutions that offer better precision and integration capabilities into digital monitoring networks.

Replacement Considerations

The MSX-W11-PA is a confirmed successor model in the Magnesense line. Verify compatibility regarding mounting dimensions and signal outputs when transitioning from the MS2 series to newer models.