SERIES 477B
HANDHELD DIGITAL MANOMETER
Precise Air Pressure Measurement, +/-0.1% Accuracy
FEATURES/BENEFITS
§ Precise 0.1% FS accuracy provides four times better accuracy than most standard manometer/gages
§ Aluminum housing protects instrument against damage
§ 40 readings in internal memory reduces time to record data
APPLICATIONS
§ Lab calibration of other pressure instruments
§ Air velocity/ air flow measurements in commercial buildings
SPECIFICATIONS
Service:
Air and compatible gases
Wetted Parts:
Consult factory
Accuracy:
+/-0.10% FS from 60 to 78°F (15.6 to 25.6°C); +/-1% FS from 32 to 60 and
78 to 104°F (0 to 15.6 and 25.6 to 40°C)
Pressure Hysteresis:
+/-0.1% FS
Pressure Limits:
See Chart
Temperature Limits:
0 to 140°F (-17.8 to 60°C)
Storage Temperature Limits:
-4 to 176°F (-20 to 80°C)
Display:
4-digit LCD (.425” H x .234” W digits)
Resolution:
See chart
Power Requirements:
9 volt alkaline battery. Battery included but not connected
Connections:
Two barbed connections for use with 1/8” (3.18 mm) or 3/16” (4.76 mm) I.D. tubing for 477B-1, 477B-2, 477B-3, 477B-4 and 477B-5 only. Two compression fittings for use with 1/8” (3.18 mm) I.D. x ¼” (6.35 mm) O.D. tubing for 477B-6 and 477B-7 only.
Weight:
10.2 oz. (289 g)
Agency Approvals:
CE
MODEL CHART
Model
Range
Available Pressure Units
Maximum Pressure
bar
psi
In Hg
kPa
in w.c.
Mm Hg
mbar
ft w.c.
mm w.c.
Pa
477B-1
0 to 20.00 in w.c.
.0498
.7225
1.471
4.982
20.00
37.36
49.82
1.667
508.0
4982
3 psig
477B-2
0 to 40.00 in w.c.
.0996
1.445
2.942
9.96
40.00
74.73
99.6
3.333
1016
9964
477B-3
0 to 200.0 in w.c.
.4982
7.225
14.71
200.0
373.6
498.2
16.67
5080
-
15 psig
477B-4
0 to 10.00 psi
.6895
10.00
20.36
68.95
276.8
517.1
689.5
23.07
7031
30 psig
477B-5
0 to 30.00 psi
2.069
30.00
61.08
206.9
830.4
1551
2069
69.20
60 psig
477B-6
