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.

Xi'an Kacise Optronics Co.,Ltd. is a professional manufacturer of  measuring instruments , located in China xi’an City. Since 2008, Xi'an Kacise focused on the development and production of pressure, level and flow measuring instruments .

We have been specializing in manufacturing pressure, level and flow measuring instruments and related products for 10 years. Based on experienced technical and management personnel, through efforts of our entire staff, we have become a professional measuring instrument manufacturer and solution provider. And we are continuously trying to improve product quality.

Xi'an Kacise is qualified with ISO 9001-2008, GJB 9001B-2009, CE, intrinsic safety explosion-proof and isolated safety explosion-proof certificates, etc. which ensure that our products comply with international standards.

Kacise sensors have already been exported to America, Spain, Australia, Chile and 20 other countries and regions, and received many favorable feedbacks. Our overseas distributers are also increasing. We regard “reasonable prices, efficient production time and good after-sales service” as our tenet, and hope to cooperate with more customers for mutual development.

Our goal is simple: to sell the best products at the best prices, and provides industry-leading customer service. We personally get to know each of our customers, and we know how to discover the most valuable part of our business , to help others achieve their goals.