Dwyer Series DM-1000

The DigiMag® Digital Gages are more versatile than analog gages with their ability to be field-programmed to select pressure, air velocity or flow operation depending on model. The DigiMag® Digital Gages have an added feature for filter applications where a set point can be input where the display will blink when the filter is dirty, alerting the user that a maintenance action needs to occur.


Programming the Series DM-1000 is easy using the menu key to access 4 simplified menus which provide access to, depending on model: security level; engineering units; K-factor for use with various Pitot tubes and flow sensors circular or rectangular duct size for volumetric flow operation; filter set point; view peak and valley process readings; digital damping for smoothing erratic process applications; display update to conserve battery life; zero and span field calibration.


The Series DM-1000 DigiMag® Digital Differential Pressure and Air Flow Gages possess a full-scale accuracy of 1% on ranges down to 2 in w.c. and 2% accuracy down to the very low range of 1 inch to 0.25 in w.c. DigiMag® Digital Differential Pressure Gages offer power versatility by working with 9-24 VDC line power or simply 9V battery power. If using line power and connecting the 9V battery, the battery will act as a back-up if line power is lost or interrupted.



Service: Air and non-combustible, compatible gases.

Wetted Materials: Consult factory.

Housing Materials: Glass filled plastic.

Accuracy: ±1% FS including linearity, hysteresis and repeatability; ±2% FS for ranges 1″ w.c. and below.

Temperature Limits: 0 to 140°F (-18 to 60°C).

Compensated Temperature Limits: 32 to 122°F (0 to 50°C).

Long Term Stability: ±1% FS per year.

Thermal Effect: ±0.05% FS/°F typ.; ±0.10% FS/°F typ. for ranges 1″ w.c. and below.

Display: 4-digit LCD (Digits: 0.60″H x 0.33″W).

Display Update: Selectable for 1 second, 10 minutes or update only from button push.

Pressure Limits:

Normal and bi-directional ranges 5 in w.c. and lower = 2 psi (13.7 kPa);

Normal and bi-directional ranges 10 in w.c. and higher = 11 psi (75 kPa).

Selectable Engineering Units: in w.c., psi, kPa, Pa, mm w.c., mBar, in Hg, mm Hg, FS (0-100% FS).

Power Requirements: 9V battery or external power supply 9-24 VDC. Battery included but not connected.

Type of Battery: 9V alkaline battery (Duracell® PC 1604 or equivalent).

Battery Service Life:

Battery life depending on the Display Update setting: 150 hours (typical) if Display Update = 1 second;

9 months (typical) if Display Update = 10 minutes;

1.5 years (typical) if Display Update is disabled.

Battery may last up to four times longer when using lithium-based battery ULTRALIFE U9VL-J.

Current Consumption: 5 mA maximum.

Electrical Connections: Removable terminal block for 16 to 26 AWG.

Electrical Entry: Cable gland for 0.114 to 0.250″ (2.9 to 6.4 mm) diameter cable.

Process Connections: 1/8″ (3 mm) ID tubing.

Enclosure Rating: NEMA 4X (IP66).

Weight: 1.18 lb (535 g).

Size: 5″ (127 mm) OD front face.

Agency Approvals: CE.