Dwyer DM-1000 Series DigiMag Digital Differential Pressure Gauge
Product Introduction
The Dwyer DM-1000 Series DigiMag Digital Differential Pressure
Gauge is a versatile instrument designed for precise measurement of
differential pressure, air velocity, and flow for air and
non-combustible gases. Equivalent to the Magnehelic gauge in
functionality, it features a 4-digit LCD display with selectable
Imperial/Metric units and intuitive 4-button controls for easy
calibration. Field-programmable for pressure, velocity, or flow
modes, the DM-1000 can be set to flash alerts for filter
maintenance, track peak/valley data, and adjust display
updates—making it ideal for HVAC, clean room, and industrial
filtration applications.
Product Features
Multi-Function Measurement:
Differential pressure, air velocity, and flow rate (with pitot
tube/K-factor settings).
Filter clogging alerts via display flashing for maintenance
scheduling.
Precision & Stability:
±1% FS accuracy (±2% for ranges ≤1" w.c.) with ±1% FS/year
long-term stability.
Temperature compensation (32–122°F/0–50°C) for consistent readings.
Flexible Display & Units:
4-digit LCD (0.60"H digits) with update intervals (1 sec–10 min) or
button-triggered updates.
Selectable units: in w.c., psi, kPa, mm w.c., mBar, etc.
Power & Durability:
9V battery (1.5-year life in standby) or 9–24 VDC external power.
NEMA 4X (IP66) fiberglass housing for dust/water protection.
User-Programmable Functions:
Security level settings, K-factor calibration for flow sensors,
data smoothing, and zero-to-full span adjustments.
Technical Specs at a Glance
| Model | Description |
| DM-1102 | DigiMag® differential digital pressure gage, range 0-0.25" w.c. |
| DM-1103 | DigiMag® differential digital pressure gage, range 0-0.5" w.c. |
| DM-1104 | DigiMag® differential digital pressure gage, range 0-1" w.c. |
| DM-1105 | DigiMag® differential digital pressure gage, range 0-2" w.c. |
| DM-1107 | DigiMag® differential digital pressure gage, range 0-5" w.c. |
| DM-1108 | DigiMag® differential digital pressure gage, range 0-10" w.c. |
| DM-1109 | DigiMag® differential digital pressure gage, range 0-15" w.c. |
| DM-1110 | DigiMag® differential digital pressure gage, range 0-25" w.c. |
| DM-1111 | DigiMag® differential digital pressure gage, range 0-50" w.c. |
| DM-1112 | DigiMag® differential digital pressure gage, range 0-100" w.c. |
| DM-1122 | DigiMag® differential digital pressure gage, range 0.25-0-0.25"
w.c. |
| DM-1123 | DigiMag® differential digital pressure gage, range 0.5-0-0.5" w.c. |
| DM-1124 | DigiMag® differential digital pressure gage, range 1-0-1" w.c. |
| DM-1125 | DigiMag® differential digital pressure gage, range 2-0-2" w.c. |
| DM-1127 | DigiMag® differential digital pressure gage, range 5-0-5" w.c. |
| DM-1128 | DigiMag® differential digital pressure gage, range 10-0-10" w.c. |
| DM-1202 | DigiMag® differential digital flow gage, range 0-0.25" w.c. |
| DM-1203 | DigiMag® differential digital flow gage, range 0-0.5" w.c. |
| DM-1204 | DigiMag® differential digital flow gage, range 0-1" w.c. |
| DM-1205 | DigiMag® differential digital flow gage, range 0-2" w.c. |
| DM-1207 | DigiMag® differential digital flow gage, range 0-5" w.c. |
| DM-1208 | DigiMag® differential digital flow gage, range 0-10" w.c. |
| DM-1209 | DigiMag® differential digital flow gage, range 0-15" w.c. |
| DM-1210 | DigiMag® differential digital flow gage, range 0-25" w.c. |
| DM-1211 | DigiMag® differential digital flow gage, range 0-50" w.c. |
| Parameter | Details |
| Accuracy | ±1% FS (±2% for ≤1" w.c. ranges) |
| Pressure Range | 0–100" w.c. (unidirectional) or ±10" w.c. (bidirectional) |
| Display | 4-digit LCD, 0.60"H x 0.33"W digits |
| Power Supply | 9V alkaline 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) |
| Model | Pressure Range | Application Focus |
| DM-1102 | 0–0.25" w.c. | Low-pressure filtration monitoring |
| DM-1125 | ±2" w.c. | Bidirectional duct pressure |
| DM-1207 | 0–5" w.c. (flow mode) | Air velocity in VAV systems |
| DM-1112 | 0–100" w.c. | High-range differential pressure |
