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
| Parameter | Details |
| Model | DM-1103 |
| Pressure Range | 0–0.25" w.c. (0–62.5 Pa) |
| Accuracy | ±1% FS (0–50°C), ±2% FS for ≤1" w.c. ranges |
| Display | 4-digit LCD, 0.60"H x 0.33"W digits |
| Power Supply | 9V battery or 9–24 VDC |
| Battery Life | 150 hours (1 sec update) to 1.5 years (standby) |
| Process Connections | 1/8" ID tubing |
| Enclosure Rating | NEMA 4X (IP66) |
| Weight | 1.18 lb (535 g) |
| Dimensions | 5" OD front face (127 mm) |
