Dwyer MSX Pro Pressure Transmitter (Model: MSX-20W-PA)

Dwyer MSX Pro Pressure Transmitter (Model: MSX-20W-PA)

Product Introduction

The Dwyer MSX Pro Pressure Transmitter (MSX-20W-PA) is a versatile Magnesense  differential pressure sensor designed for building control applications, monitoring differential pressure, air velocity, and volumetric flow. Built on the stability of the MS2 Magnesense  II series, it simplifies configuration with 32 selectable pressure ranges (Pa, mm w.c., in w.c.) in unidirectional/bidirectional modes. The transmitter offers linear pressure or velocity outputs with square root extraction for flow calculations, dual voltage/milliamp signals for control and verification, and a rotatable 4-digit LCD for easy readability. Suitable for air and non-combustible gases, it meets UL94 V-0 and plenum ratings for safety.

Product Features

Precision Measurement Capability:

Monitors differential pressure, air velocity, and volumetric flow in building systems.

±1% FSO accuracy for reliable readings across 32 pressure ranges (Pa, mm w.c., in w.c.).

Configurable Output Modes:

Linear pressure output or velocity output with square root extraction for flow calculation.

Dual signals: 4–20 mA (2-wire) and selectable 0–10 V/0–5 V (3-wire) for control and signal verification.

Flexible Installation & Operation:

10–36 VDC (2-wire) or 17–36 VDC/21.6–33 VAC (3-wire) power input.

1/2" NPS thread electrical entry and orientation-independent mounting.

User-Friendly Interface:

4-digit LCD with 180° rotatable display for optimal visibility in any installation.

Optional toolless terminal block for quick wiring.

Safety & Environmental Ratings:

UL94 V-0 fire rating and plenum-rated materials for hazardous environments.

Pressure limits: Up to 3.6 psi (operation) and 6 psi (burst) for select ranges.

Application Versatility:

Ideal for filter monitoring, clean room pressure control, duct static pressure, and VAV system airflow.

Electrical Specifications:

Current output loop resistance: 0–1250 Ω max; voltage output: min. 1 kΩ load resistance.