Connection typeCompression Fitting
ApplicationAir, Compatible Gases
Max. pressure200 psig
Data storageYes
Display digits4 Digits
Operating temp. range0°F to +140°F
Display typeLCD
Standards and approvalsCE
Battery type9V
Operating pressure range0 psi to 150 psi
Operating range0 psi to 150 psi
Pressure range0 psi to 150 psi
Overall height6 1/2"
For tubing diameter1/8"
Max. operating pressure200 psi
Maximum pressure150 psi
Nist traceable certificateNo
Manometer typeDigital Manometer & Airflow Meter
Number of connections2
Auto power offYes
Data holdYes
Process connection typeCompression
Accuracy-0.5% to +0.5%
Pressure accuracy-0.5% to +0.5%
Overall width2.812"
Housing height5.89"
Housing length2.812"
Pressure resolution0.1 psi
For use withAir, Compatible Gases
IncludesBattery, Wrist Strap
Batteries requiredYes
Low battery indicatorYes
Min/max captureYes
Pressure unitsPsi
Zero buttonYes
AlarmNo
Standard logoCE.png
Manufacturers warranty length1 yr.
Minimum pressure0 psi
Air velocity unitsFPM, FPS, kmph, knots, mph, mps
Air volume unitsCFM, cu. m/hr., cu. m/sec.
Connections1/8" Compression, 1/4" Compression
Data logging40 Readings
Series477AV Series
Air velocity range258000 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 velocity258000 FPM
Storage temperature range-4°F to +176°F
Batteries includedYes
Digital display features4 Digit LED
Pressure units displayedPsi
Maximum operating temperature140°F
Minimum operating temperature0°F
Ships factory directNo
In stockNo
Gross weight0.87 lbs
DescriptionDigital Manom Range 0-150 PSI Air Velocity/Flow Mode
Family seriesDwyer Instruments Sensors
TypeElectronic
Primary typeManometer
Fitting connectionTwo Barbed Connections for Use With 1/8" (3.18mm) or 3/16" (4.76 Mm) ID Tubing.
Pressure hysteresis±0.1% of FS.
Wetted materialsConsult factory.
ServiceAir and compatible gases.
Operating temperature range0 to 140°F (-17.8 to 60°C).
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.
Units of pressurein w.c., ft. w.c., inHg, psi, oz/in², mm w.c., cm w.c., mm Hg,mbar, Pa, kPa, hPa.
ResolutionSee chart on catalog page.
Display0.42" (10.6 mm) 4 digit LCD.
Storage temperature limits-4 to 176°F (-20 to 80°C).
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.