Series 477AV Handheld Digital Manometer

Measures Pressure, Flow and Velocity; ±0.5% Accuracy

The Series 477AV Handheld Digital Manometer is now available with pressure, flow, and velocity measurements along with a number of other convenient features. The built-in air velocity and flow calculations provide accuracy and conserve time and error associated with manual calculations. Also featured on this unit are adjustable zero and span values for calibrating in the field, as well as a damping feature to compensate for the fluctuating of readings.

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Product Applications

Air flow monitoring
Duct static pressure

Models & Ordering

Shipping Information

All shipping times are dependent on product availability at time of shipment.

Although we make every effort to ensure a continuous supply of our products, occasional circumstances may force us to temporarily run out of a product, or have shipping delays. Should this occur, customers will be notified soon after placement of any orders for such products and, if applicable, items will be put on backorder. For orders requiring expedited shipment, our customer service team can be contacted to confirm product availability

COVID-19 Update: Due to high customer demand, lead time on some products may be up to two weeks. While this is a developing health situation, we are working continuously to take the necessary measures to ensure that the products you need are available with minimal interruption.

Build Your Custom Part. Use our Product Configurator

Model	Description	Usually Ships*	Price	Order
477AV-0 Ships: Next Day Price: $286.00	Digital manometer, range 0-10.00" w.c., air velocity/flow modes.	Next Day*	$286.00	Order
477AV-00 Ships: Next Day Price: $286.00	Digital manometer, range 0-4.00" w.c., air velocity/flow modes.	Next Day*	$286.00	Order
477AV-000 Ships: Next Day Price: $304.00	Digital manometer, range 0-1.00" w.c., air velocity/flow modes.	Next Day*	$304.00	Order
477AV-1 Ships: Next Day Price: $286.00	Digital manometer, range 0-20.00" w.c., air velocity/flow modes.	Next Day*	$286.00	Order
477AV-2 Ships: Next Day Price: $185.00	Digital manometer, range 0-40.00" w.c., air velocity/flow modes.	Next Day*	$185.00	Order
477AV-3 Ships: Next Day Price: $185.00	Digital manometer, range 0-200.00" w.c., air velocity/flow modes.	Next Day*	$185.00	Order
477AV-4 Ships: Next Day Price: $185.00	Digital manometer, range 0-10.00 psi, air velocity/flow modes.	Next Day*	$185.00	Order
477AV-5 Ships: Next Day Price: $185.00	Digital manometer, range 0-20.00 psi, air velocity/flow modes.	Next Day*	$185.00	Order
477AV-6 Ships: Next Day Price: $185.00	Digital manometer, range 0-30.00 psi, air velocity/flow modes.	Next Day*	$185.00	Order
477AV-7 Ships: Next Day Price: $185.00	Digital manometer, range 0-100.00 psi, air velocity/flow modes.	Next Day*	$185.00	Order
477AV-8 Ships: Next Day Price: $185.00	Digital manometer, range 0-150.00 psi, air velocity/flow modes.	Next Day*	$185.00	Order

Can't find what you need? Build Your Custom Part. Use our Product Configurator

Specifications

Service:: Air and compatible gases.
Wetted Materials:: Consult factory.
Accuracy:: ±0.5% FS, 60 to 78°F (15.6 to 25.6°C); ±1.5% FS from 32 to 60°F and 78 to 104°F (0 to 15.6°C and 25.6 to 40.0°C).
Pressure Hysteresis:: ±0.1% of full scale.
Pressure Limits:: See chart on catalog page.
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 digit LCD.
Resolution:: See chart on catalog page.
Units of Pressure:: in w.c., ft. w.c., in Hg, psi, oz/in², mm w.c., cm w.c., mm Hg, mbar, Pa, kPa, hPa.
Units of Velocity:: fpm, fps, mph, m/h, m/s, k/h, knot.
Units of Flow:: cfm, m3/h, m3/s.
Power Requirements:: 9 V Alkaline battery, installed non-functional, user replaceable.
Weight:: 10.2 oz (289 g).
Process Connections:: Two barbed connections for use with 1/8" (3.18 mm) or 3/16" (4.76 mm) ID tubing. Two compression fittings for use with 1/8" (3.18 mm) ID x 1/4" (6.35 mm) OD tubing for 477AV-7 and 477AV-8 only.
Agency Approvals:: CE.

Features

Calculates and displays air velocity and volumetric air flow
Rugged aluminum case protects instrument from damage during transport/use
9 selectable English and metric engineering units
Large, easy to read display with backlight for use in dark areas
Stores up to 40 readings with minimum, maximum and average statistics

Accessories

Model Number	Description	Usually Ships*	Price	Order
166T	Telescoping pitot tube	Next Day	$208.00	Order
A-201	Rubber latex tubing has less tendency to kink in storage and occupies less space, thus is best for portable work. 3/16" ID, 9' length.	Next Day	$7.80	Order
A-303	Portable static pressure tip, for 3/16" ID rubber or plastic tubing with 4" insertion.	Next Day	$10.25	Order
A-375	Compression fitting connections, 1/8" tube to 1/8" NPT male.	1-2 Weeks	$4.00	Order
A-397	Rugged step drill, quickly provides true round holes in thin materials, no center punch needed to start, automatically de-burrs drilled hole, high speed steel, drills 3/16" through 1/2" holes in 1/16" increments.	1-2 Weeks	$57.00	Order
A-463	Plastic carrying case with foam liner for 475-1-AV air velocity kit - 13-1/2" x 10" x 2-3/8".	1-2 Weeks	$76.50	Order
A-472T	475-T AV telescoping pitot tube air velocity kit less manometer.	Less Than 1 Week	$346.00	Order
A-402A	Carrying case for most manometers; tough, gray nylon pouch, double zippered with belt loop	Next Day	$43.75	Order
A-47X-BOOT	Rubber boot for manometers (manometer not included).	Next Day	$13.50	Order
UHH-C1	Soft carrying case	Next Day	$40.25	Order

Videos

Model Chart

EXAMPLE	477AV	2	NIST	477AV-2-NIST, 477AV Differential Pressure Manometer w/ AV and Flow, 40” w.c./10 kPa Range, NIST Calibrated
RANGE		000 00 0 1 2 3 4 5 6 7 8		1” w.c. / 0.249 kPa 4” w.c. / 0.995 kPa 10” w.c. / 2.49 kPa 20” w.c. / 5 kPa 40” w.c. / 10 kPa 200” w.c. / 50 kPa 10 psi / 70 kPa 20 psi / 140 kPa 30 psi / 200 kPa 100 psi / 700 kPa 150 psi / 1000 kPa
OPTIONS			COC FC NIST	Certificate of Calibration Factory Calibration Certificate NIST Traceable Calibration Certificate

Product Literature

Manuals

Instruction Manual

Catalog Pages

Product Data Sheet

477AV

SlideShare

Approvals

Drawings

Questions

Question

We use series 475-6-FM Mk III digital manometer. What is the recommended calibration interval?

Answer

We do not have an official recommended calibration interval. However, we would suggest checking the calibration at least once or twice a year depending on the applciation and how often the unit is used.

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