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.

Applications


- Air flow monitoring, when used with a Dwyer® Pitot tube
- Duct static pressure

Ranges from 1" w.c. to 150 psid, ±0.5% Accuracy
The SERIES 475 Mark III Handheld Digital Manometer measures positive, negative, or differential pressures of air and natural gases in ranges from 1 in w.c. (0.249 kPa) to 150 psid (10.34 bar). The dual push pads on the front panel control the on/off, auto zero, and pressure unit selection, allowing for simple operation with no set up needed. When used with a Dwyer® Pitot tube, the Series 475 can also be used as an air velocity gage.
Applications

Monitoring natural gas pressures on boilers and other combustion equipmentAir velocity monitoring, when used with a Dwyer® Pitot tube and AV calculatorField calibration of other instrumentsMonitoring or troubleshooting HVAC systems

3% Accuracy for Stationary and Portable Applications
Dwyer® Mark II series molded manometers are of the inclined and inclined-vertical types. The curved inclined-vertical tube of the Model 25 gage provides higher ranges with more easily read increments at low readings. The Model 25 is excellent for general purpose work. The Model 40 inclined gage provides linear calibration and excellent resolution throughout its range. The Model 40 is ideally suited for air velocity and air filter gage applications. Both gage types are capable of pressure measurements above and below atmospheric as well as differential pressure measurements.