Model LDPM Digital Differential Pressure Manometer

11 Selectable Pressure Units, 3% FS Accuracy

The MODEL LDPM Digital Differential Pressure Manometer is a versatile, handheld, battery operated manometer that can measure up to 55.4 in w.c. (140.6 cm w.c.). It is able to measure either positive, negative, or differential pressure with a 3% FS accuracy. Users can select from 11 common English and metric pressure units.

Product Applications

  • Field calibration of other instruments
  • Monitoring or troubleshooting HVAC systems

Models & Ordering

Model Description Usually Ships Price Order
Ships: Same Day
Price: $45.00
Digital differential pressure manometer, range ± 55.4" w.c., 3% FS accuracy Same Day $45.00 Order


Air and non-combustible non-corrosive gases only.
Wetted Materials:
Consult factory.
3% FS.
±0.2% FS.
Pressure Hysteresis:
±0.29% FS.
Pressure Limits:
10 psi.
Response Time:
0.5 s typ.
Temperature Limits:
Operating: 32 to 122°F (0 to 50°C); Storage: 14 to 140°F (-1 to 60°C).
Dual-line backlit LCD.
See chart on catalog page.
Power Requirements:
9 V alkaline battery, included, user replaceable.
5.82 oz (165 g).
Process Connections:
Two barbed connections for use with 1/8" (3.18 mm) or 3/16" (4.76 mm) ID tubing.
Agency Approvals:


  • Provided with carrying case and tubing for ease of use
  • Able to store maximum, minimum, and average readings over a period of time
  • Auto power off function to conserve battery life
  • Instant selection of 11 common English and metric pressure units


Model Number Description Usually Ships Price Order
NISTCAL-MD NIST traceable calibration certificate for digital manometers. NOTE: EQUAL CERTS WILL BE CHARGED PER UNITS PURCHASED. Less Than 1 Week $109.00 Order

Product Literature


Catalog Pages

Product Data Sheet



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