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477AV-1
Digital manometer, range 0-20.00" w.c., 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 | 17910 FPM |
| Applications | Fluid Measurement and Control |
| Battery Size and Type | Alkaline 9V |
| Compensated Temperature, Max | 104 °F |
| Compensated Temperature, Min | 32 °F |
| Display Measuring Units | cfm, cm w.c., fpm, fps, ft w.c., hPa, in w.c., inHg, k/h, knot, kPa, m3/h, m3/s, mile/hr, m/s, mbar, mm w.c., mmHg, mph, oz/in2, Pa, psi |
| Display Note | 0.42˝ (10.6 mm) 4 digit LCD |
| Display Type | LCD |
| GrossWeightValue | 0.64 |
| Hysteresis | ± 0.1% |
| Materials, Wetted | Consult Factory |
| Measurement Pressure, Max | 20 inH₂O |
| Measurement Pressure, Min | 0 inH₂O |
| Measurement Type | Flow, Pressure, Velocity |
| Media Compatibility | Clean dry air / inert gas, HVAC / room air, Inert / non-reactive gases, Nitrogen |
| Number of Digits | 4 |
| Operating Pressure, Max | 10 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
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Show Ratings & Reviews
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