Dwyer Instruments LDPM Catalog Page
MODEL LDPM
2.178
DIGITAL DIFFERENTIAL PRESSURE MANOMETER
11 Selectable Pressure Units, ±3% FS Accuracy
TEST & DATA
[55.32]
.780
[19.81]
5.955
[151.26]
6.344
[161.14]
1.320
[33.53]
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 ±0.3% FS
accuracy. Users can select from 11 common English and metric pressure units.
FEATURES/BENEFITS
• 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
APPLICATIONS
• Field calibration of other instruments
• Monitoring or troubleshooting HVAC systems
Manometers, Portable
MODEL CHART
Model Description
LDPM-01 Digital differential pressure manometer, ±55.40 in w.c.
OPTIONS
Use order code Description
NISTCAL-MD NIST traceable calibration certicate
SPECIFICATIONS
Service: Air and non-combustible non-corrosive gases only.
Wetted Materials: Consult factory.
Accuracy: ±3% FS.
Repeatability: ±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).
Display: Dual-line backlit LCD.
Resolution: See chart.
Power Requirements: 9 V alkaline battery, included, user replaceable.
Weight: 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: CE.
RANGE/RESOLUTION
Unit Range Resolution
in w.c.
ft w.c.
in Hg
psi
oz/in
cm w.c.
mm Hg
bar
mbar
kPa
kg/cm
±55.40
0.01
±4.612
0.001
±0.407
0.001
±2.00
±32.00
±140.6
±103.4
±0.137
±137.8
±13.79
±0.140
0.001
0.01
0.1
0.1
0.001
0.1
0.01
0.001
2
2
Includes: Manometer, tubing, barbed tting, 9V battery, and carrying case
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