Dwyer DM-1103 DigiMag Digital Differential Pressure Gauge

Product Introduction

The Dwyer DM-1103 is a high-precision digital differential pressure gauge designed for measuring air and non-combustible gas pressures, replacing traditional analog Magnehelic® gauges with enhanced functionality. With a pressure range of 0–0.25" w.c. and ±1% FS accuracy (±2% for ranges ≤1" w.c.), it features a 4-digit LCD display for real-time readings in multiple units. The gauge supports field programming for pressure, air velocity, or flow modes and includes a filter maintenance alert (display blinking) when set thresholds are reached, making it ideal for critical environment monitoring.

Product Features

Accuracy & Stability:

±1% FS accuracy (at 32–122°F/0–50°C), ±2% for ultra-low ranges (≤1" w.c.).

±1% FS/year long-term stability with thermal compensation (±0.10% FS/°F for ≤1" w.c. ranges).

Display & Units:

4-digit LCD (0.60"H digits) with selectable update intervals (1 sec–10 min) or manual update.

Engineering units: in w.c., psi, kPa, mBar, mm Hg, etc., eliminating manual conversions.

Power & Versatility:

9V battery (150 hours @1 sec update) or 9–24 VDC external power (battery acts as backup).

Field-programmable for pressure, velocity, or flow (requires K-factor input for flow mode).

Alert & Safety Features:

Filter clogging alert (display blinking) at user-set thresholds.

NEMA 4X (IP66) enclosure for dust/water protection in harsh environments.

Construction & Materials:

Glass-filled plastic housing with stainless steel wetted parts (consult factory for details).

1/8" ID tubing connections for quick pressure port setup.

Technical Specs at a Glance

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.