Do you have a question about the Extech Instruments HD350 and is the answer not in the manual?
Step-by-step guide for taking pressure readings.
Instructions for measuring air velocity using a Pitot tube.
Guide to measuring air flow using duct dimensions and velocity.
Technical details for air velocity measurements.
Technical details for air flow measurements.
Technical details for pressure measurements.
Technical details for temperature measurements.
| Resolution (Humidity) | 0.1%RH |
|---|---|
| Power Supply | 9V battery |
| Resolution | 0.1 m/s (1 ft/min) |
| Data Hold | Yes |
| Min/Max | Yes |
| Average | Yes |
| Measurement Range (Humidity) | 10% to 95% RH |
| Resolution (Temperature) | 0.1°F / 0.1°C |
| Accuracy (Humidity) | ±3%RH |
| Accuracy (Temperature) | ±1.8°F/1°C |
| Display | LCD |
| Measures | Air velocity, temperature, humidity |
| Air Velocity Accuracy | ±3% of reading |











