Dwyer Instruments 477-000-FM Installation And Operating Instructions

Series 477 Digital Manometers are versatile, hand-held, battery operated manometers available in several basic
ranges from 0-20 in. H
±0.5% of full scale accuracy. You can select from up to nine common English and metric pressure units so conversions
are not necessary. A memory function allows storage of up to 40 readings for later recall and a backlight provides aux-
iliary lighting for hard-to-see locations. Also standard are a hold feature plus both visual and audible overpressure
alarms.
Model* Range
477-000-FM 0-1.000 in w.c.
477-00-FM 0-4.000 in w.c.
477-0-FM 0-10.00 in w.c.
477-1-FM 0-20.00 in w.c.
477-2-FM 0-40.00 in w.c.
477-3-FM 0-200.0 in w.c.
477-4-FM 0-10.00 psi
477-5-FM 0-20.00 psi
477-6-FM 0-30.00 psi
477-7-FM 0-100.0 psi
477-8-FM 0-150.0 psi
DWYER INSTRUMENTS, INC.
QualityInstruments-Direct
P.O. BOX 373 • MICHIGAN CITY, INDIANA 46360, U.S.A.
Series 477 Handheld Digital Manometer
Specifications - Installation and Operating Instructions
O up to 0-150 psid. All models measure either positive, negative or differential pressures with
2
Available Pressure Units
bar psi in Hg
.0736
.1445 .2942
.3613 .7355
.0498 .7225 1.471
.0996 1.445 2.942
.4982 7.225 14.71
.6895 10.00 20.36
1.379 20.00 40.72
2.069 30.00 61.08
6.895 100.0 203.6
10.34 150.0 305.4

SPECIFICATIONS

Service: Air and compatible gases.
Wetted Materials: Consult factory.
Accuracy: ±0.5% F.S., 60 to 78°F (15.6 to 25.6°C);
±1.5% F.S. from 32 to 60°F and 78 to 104°F (0 to
15.6°C and 25.6 to 40°C).
Pressure Hysteresis: ±0.1% of full scale.
Pressure Limits: See chart.
Temperature Limits: 0 to 140°F (-17.8 to 60°C).
Compensated Temperature Limits: 32 to 104°F (-0 to
40°C).
Storage Temperature Limits: -4 to 176°F (-20 to 80°C).
Display: 0.42˝ (10.6 mm) 4-1/2˝ digit liquid crystal.
Resolution: See chart.
Power Requirements: 9 volt alkaline battery. Battery
included but not connected.
Weight: 10.2 oz (289 g).
Connections: Two barbed connections for use with 1/8˝
(3.18 mm) or 3/16˝ (4.76 mm) I.D. tubing. Two compres-
sion fittings for use with 1/8˝ (3.18 mm) I.D. x 1/4˝ (6.35
mm) O.D. tubing for 477-6-FM & 477-7-FM only.
Agency Approvals: CE, FM approved to
IS / I / 1 / ABCD / T4 / Ta = -17.8°C to 60°C;
I / 0 /AEx ia IIC / T4 Ta = 17.8°C to 60°C.
kPa in w.c. mm Hg mbar
.2491 1.000 1.868 2.491
0.996 4.000 7.473 9.96
2.491 10.00 18.68 24.91
4.982 20.00 37.36 49.82
9.96 40.00 74.73 99.6
49.82 200.0 373.6 498.2
68.95 276.8 517.1 689.5
137.9 553.6 1034 1379
206.9 830.4 1551 2069
689.5 2768 5171 6895
1034 4152 7757
Phone: 219/879-8000
Fax: 219/872-9057
Bulletin D-22
Maximum
mm w.c. Pa Pressure
25.40 249.1 5 psig
101.6 996 5 psig
254.0 2491 5 psig
508.0 4982 10 psig
1016 9964 10 psig
5080 30 psig
7031 30 psig
60 psig
60 psig
150 psig
200 psig
www.dwyer-inst.com
e-mail: info@dwyermail.com
1.888.475.
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