11
Appendix A
Specifications
Specifications are subject to change without notice.
Static/Differential Pressure:
Range
1
:
-15 to +15 in. H
2
O (-28.0 to +28.0 mm Hg, -3735 to
+3735 Pa)
Accuracy:
±1% of reading ±0.005 in. H
2
O (±0.01 mm Hg, ±1 Pa)
Resolution:
0.001 in. H
2
O (0.1 Pa, 0.01 mm Hg)
Velocity From a Pitot Tube:
Range
2
:
250 to 15500 ft/min (1.27 to 78.7 m/s)
Accuracy
3
:
±1.5% at 2000 ft/min (10.16 m/s)
Resolution:
1 ft/min (0.1 m/s)
Instrument Temperature Range:
Operating (Electronics): 40 to 113°F (5 to 45°C)
Storage:
-4 to 140°F (-20 to 60°C)
Instrument Operating Conditions:
Altitude up to 4000 meters
Relative humidity up to 80% RH, non-condensing
Pollution degree 1 in accordance with IEC 664
Transient over voltage category II
External Meter Dimensions:
3.3 in.
×
7.0 in.
×
1.8 in. (8.4 cm
×
17.8 cm
×
4.4 cm)
Meter Weight:
Weight with batteries:
0.6 lbs (0.27 kg)
Power Requirements:
Four AA-size batteries (included)
1
Overpressure range = 7 psi (190 in. H
2
O, 360 mmHg, 48 kPa).
2
Pressure velocity measurements are not recommended below 1,000 ft/min (5 m/s) and are
best suited to velocities over 2000 ft/min. Range can vary depending on barometric
pressure.
3
Accuracy is a function of converting pressure to velocity. Conversion accuracy improves
when actual pressure values increase.
