ApplicationAir, Compatible Gases
Pressure range0 in. wc to 200 in. wc
Max. pressure30 psig
TypeDigital
Battery type9V
Housing materialAluminum
Display digits4 Digits
Data storageYes
Display type4 Digit LCD
Operating temp. range0°F to +140°F
Standards and approvalsCE
Operating pressure range0 in. wc to 200 in. wc
Operating range0 in. wc to 200 in. wc
Pressure accuracy-0.5% to +0.5%
Accuracy-0.5% to +0.5%
Housing height5.89"
Housing length2.812"
Overall width2.812"
Overall height6 1/2"
Auto power offYes
Max. operating pressure30 psi
Nist traceable certificateNo
For use withAir, Compatible Gases
IncludesBattery, Wrist Strap
Manometer typeDigital Manometer & Airflow Meter
Number of connections2
Low battery indicatorYes
Min/max captureYes
Pressure unitsIn Wc
Process connection typeHose Barb
Data holdYes
Batteries requiredYes
Zero buttonYes
AlarmNo
Standard logoCE.png
Manufacturers warranty length1 yr.
Air velocity unitsFPM, FPS, kmph, knots, mph, mps
Air volume unitsCFM, cu. m/hr., cu. m/sec.
Connections1/8" Hose Barb, 3/16" Hose Barb
Data logging40 Readings
Maximum pressure200 in. wc
Series477AV Series
Air velocity range56630 FPM
Air velocity accuracy+/-0.5% Full Scale From 60 to 78°F, +/-1.5% Full Scale From 32 to 60°F And 78 to 104°F
Maximum air velocity56630 FPM
Storage temperature range-4°F to +176°F
Batteries includedYes
Digital display features4 Digit LED
Pressure units displayedIn Wc
Maximum operating temperature140°F
Minimum operating temperature0°F
Minimum pressure0 in. wc
Pressure resolution0.1 in. wc
In stockNo
Ships factory directNo
Family seriesDwyer Instruments Sensors
DescriptionDigital Manom Range 0-200In WC Air Velocity/Flow Mode
Gross weight0 lbs
Primary typeManometer
Units of pressurein w.c., ft. w.c., inHg, psi, oz/in², mm w.c., cm w.c., mm Hg,mbar, Pa, kPa, hPa.
Compensated temperature limits32 to 104°F (0 to 40°C).
Temperature limits0 to 140°F (-17.8 to 60°C).
Pressure limitsSee chart on catalog page.
Pressure hysteresis±0.1% of FS.
Wetted materialsConsult factory.
ServiceAir and compatible gases.
Operating temperature range0 to 140°F (-17.8 to 60°C).
Fitting connectionTwo Barbed Connections for Use With 1/8" (3.18mm) or 3/16" (4.76 Mm) ID Tubing.
Measurement scalecfm, m3/h, m3/s.
ComplianceCE.
Process connectionsTwo barbed connections for use with 1/8" (3.18mm) or 3/16" (4.76 mm) ID tubing.
Power requirements9 V Alkaline battery, installed non-functional, user replaceable.
Units of flowcfm, m3/h, m3/s.
Units of velocityfpm, fps, mph, m/h, m/s, k/h, knot.
ResolutionSee chart on catalog page.
Display0.42" (10.6 mm) 4 digit LCD.
Storage temperature limits-4 to 176°F (-20 to 80°C).