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MSX-W20-IN-LCD is the cross of MS-221-LCD

Dwyer Instruments MSX-W20-IN-LCD Magnesense® Differential Pressure Transmitter with LCD Display

The Dwyer Instruments MSX-W20-IN-LCD Magnesense® Differential Pressure Transmitter is a highly reliable and versatile solution designed for precise pressure measurement and control in HVAC and building automation systems. Engineered as part of the advanced Magnesense® MSX Series, this transmitter enhances performance, simplifies installation, and reduces configuration time for a wide range of commercial and industrial applications.

🔧 Key Features & Benefits

• High Accuracy Options: Selectable accuracy levels (±0.1%, ±0.25%, ±0.5%) for precise monitoring

• Multi-Output Capability: Supports 4–20 mA (2-wire), 0–10V, or 0–5V (3-wire) outputs for flexible integration

• Integrated LCD Display: Rotatable 180° screen for easy viewing and on-site adjustments

• Bidirectional Measurement: Ideal for both positive and negative differential pressure readings

• Advanced Flow Calculations: Built-in square root extraction enables velocity and flow measurement

• Dual Output Signals: Allows simultaneous control and signal verification

• Fast Response Time: Instantaneous response (default) or selectable 3-second delay

• User-Friendly Setup: Digital push-button zero and span adjustments

• Toolless Wiring Option: Simplifies installation and reduces labor time

🏗️ Durable & Safe Design

• Wall-mounted, compact housing

• UL94 V-0 flame-rated and plenum-rated for enhanced safety

• 1/2" NPS threaded electrical entry for secure connections

• Operating temperature range: -20°C to 70°C

• Maximum supply voltage: 36 VDC

📊 Technical Overview

• Model: MSX-W20-IN-LCD

• Series: Magnesense® MSX

• Pressure Type: Differential

• Range: 0.5" Water Column

• Output Signals: 4–20 mA, 0–10V, 0–5V selectable

• Connection Type: Terminal Block

• Display: Rotatable LCD

• Compliance: No SVHC (as of June 2025)

🌬️ Typical Applications

• Air filter monitoring in HVAC air handling units

• Cleanroom pressure control in pharmaceutical and semiconductor environments

• Duct static pressure measurement in commercial buildings

• Air velocity and airflow monitoring in VAV (Variable Air Volume) systems

✅ Why Choose the MSX-W20-IN-LCD?

This Magnesense® differential pressure transmitter combines accuracy, flexibility, and ease of installation into one powerful device. Whether you're optimizing airflow, ensuring cleanroom compliance, or monitoring system performance, the MSX Series delivers dependable results for modern building automation needs.