MS2-W101

Overview

The Dwyer Instruments MS2-W101 is a Magnesense II differential pressure transmitter designed for HVAC and building automation applications. It features a wall-mount configuration with a universal output capability, simultaneously transmitting a two-wire 4-20 mA current signal and a three-wire 0-5 V or 0-10 V voltage signal via removable European-style terminals. The unit supports low-range measurements, including 0.10, 0.15, 0.25, and 0.50 inches w.c., in a uni-directional format. An optional LCD readout provides clear local display of process values.

Feature Summary

• Simultaneous dual-output transmission of analog current and voltage signals
• Removable European-style terminal blocks for simplified wiring maintenance
• Magnesense sensing technology ensuring long-term stability and reliability
• Wall-mount design optimized for integration into building control systems

Applications

• HVAC duct static pressure monitoring
• Filter status monitoring across air handling units
• Fan speed control feedback loops
• Building automation system (BAS) data acquisition

Procurement Notes

Verify the specific suffix required for your application, such as -LCD for integrated display or -PA for specific pressure ranges. Confirm that the mounting hardware matches your installation surface. Ensure the power supply polarity aligns with the two-wire loop requirements. Check if the European-style terminal blocks are compatible with your existing wiring infrastructure to avoid adapter purchases.

Selection Notes

Select this model when simultaneous current and voltage outputs are necessary for different controller inputs. The MS2 series is suitable for clean gases and non-corrosive environments typical in commercial buildings. Consider the -LCD variant if local visual verification of pressure readings is required during commissioning or troubleshooting. Ensure the selected range covers the maximum expected differential pressure without exceeding the sensor limits.

Part Context

The MS2-W101 belongs to the Magnesense II family, which succeeded earlier MS2 series models. This lineage is known for replacing mechanical diaphragms with solid-state magnetic sensing elements to improve accuracy and lifespan. The product line focuses on simplifying installation through configurable outputs and standardized mounting patterns common in the HVAC instrumentation market.

Replacement Considerations

Direct replacements may include other Magnesense II variants with adjusted ranges or display options. Verify compatibility with existing control loops when substituting older MS2 models. Ensure the replacement maintains the same output signal types to avoid rewiring control panels.