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477AV-4
Digital manometer, range 0-10.00 psi, air velocity/flow modes.
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Product Specs
<< See all Product Models| Brand |
 |
| Accuracy | ± 0.5 % |
| Accuracy Detail | ± 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) |
| Air Velocity, Max | 66620 FPM |
| Battery Size and Type | Alkaline 9V |
| Compensated Temperature, Max | 104 °F |
| Compensated Temperature, Min | 32 °F |
| Display Note | 0.42˝ (10.6 mm) 4 digit LCD |
| Display Type | LCD |
| GrossWeightValue | 0.64 |
| Hysteresis | ± 0.1% |
| Measurement Pressure, Max | 10 psi |
| Measurement Pressure, Min | 0 psi |
| Measurement Type | Flow, Pressure, Velocity |
| Number of Digits | 4 |
| Operating Pressure, Max | 30 psi |
| Operating Temperature, Max | 140 °F |
| Operating Temperature, Min | 0 °F |
| Process Connection Size | 1/8 in |
| Process Connection Type | Barbed Connection |
| Series ID | Series-477AV |
| Storage Temperature, Max | 176 °F |
| Storage Temperature, Min | -4 °F |
| Supply Power Type | Battery |
| Weight | 10.2 oz |
| Country of Origin | United States |
| See All Specs | |
PDFs & Manuals
Accessories
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.
SGD18.93 / each
0 In Stock
Portable static pressure tip, for 3/16" ID rubber or plastic tubing with 4" insertion.
SGD25.23 / each
0 In Stock
Carrying case for most manometers; tough, gray nylon pouch, double zippered with belt loop
SGD105.21 / each
0 In Stock
Plastic carrying case with foam liner for 475-1-AV air velocity kit - 13-1/2" x 10" x 2-3/8".
SGD192.26 / each
0 In Stock
475-T AV telescoping pitot tube air velocity kit less manometer
SGD1,022.84 / each
0 In Stock
Show Ratings & Reviews
Rated 5 out of
5
by
Sean O from
Long time user still happy
My last Dwyer monometer lasted over a decade until I damaged the screen. This is just as robust with some nice upgrades.
Date published: 2026-07-18
Rated 5 out of
5
by
c1board from
Easy to use.
Great device to simplify balancing air flows in either Industrial or Residential application
Date published: 2026-07-16
Rated 5 out of
5
by
Abhijit Bhosale from
accurate and reliable device
Very accurate and reliable device. we use this for airflow testing of residential and light commercial fans. We also have a certified lab - test chamber. The data given out by Dwyer is found to be very accurate.
Date published: 2025-11-13
Rated 4 out of
5
by
CKail14 from
This is exactly what we needed!!
Exactly what was needed-got in a timely manner- excellent!!
Date published: 2025-10-08
Rated 4 out of
5
by
Ron Rose from
Easy Ordering!
Very easy to order and fast delivery. Would definitely recommend
Date published: 2025-10-05
Rated 5 out of
5
by
Kim Tutin from
Great Technical Sales Support!
Dwyer's great technical sales support personnel enabled us to identify and select the devices that accomplished our objectives. We called several times regarding several different products. Each time, we got our questions answered in a timely, effective, and helpful manner. We purchased several different products based on the expert advise provided. This technical help was essential for our small business. Thank you Dwyer!
Date published: 2025-07-13