| FEATURES: 12 pressure units Wind speed measurement Zero calibration and point calibration Data retention (HOLD) Difference mode supported Query the maximum and minimum values Display with backlight Automatic shut down Low power reminder | APPLICATIONS: HVAC system Pressure and wind speed of fan and blower Filter Laboratory Negative pressure cabin, room Pipeline gas pressure |
| Model | YW-721 |
| Parameter | Pressure difference; wind speed |
| Sensor | Differential pressure sensor |
| Measuring Range | Pressure: 0~100 hPa |
| 0~45.15 inH2O | |
| Wind Speed: 10~100 m/s (medium density = air density = 1.29 kg/m3) | |
| Accuracy | ±0.03 hPa (0~0.30 hPa) |
| ±0.05 hPa (0.31~1.00 hPa) | |
| ±(1.5% readings+0.1 hPa) Other ranges | |
| ±0.01 inH2O (0~0.12 inH2O) | |
| ±0.02 inH2O (0.13~0.40 inH2O) | |
| ±(1.5% readings+0.04 inH2O) Other ranges | |
| Resolution | 0.01 hPa/0.01 inH2O |
| Calibration | Zero calibration; point calibration |
| Unit | Pressure: hPa, kPa, bar, mbar, psi, mmHg, mmH2O, inHg, inH2O, ftH2O, kgf/cm2, ozf/in2 |
| Wins speed: m/s, fpm | |
| Pitot Tube Coefficient | 1 |
| Sample Interval | 0.5 seconds |
| Operation Temperature | 0~50ºC |
| Storage Temperature | -20~60ºC (without batteries) |
| Power Interface | Micro USB |
| Power Supply | 3 pcs of 1.5V AAA alkaline batteries /1.2V AAA rechargeable batteries |
| Battery Life | About 90 hours (when backlight off) |
| Size | 135*57*30mm |
| Case Material | ABS |
| Weight | About 90g (not including batteries) |
| Certificate | CE; ROHS |
| Warranty | 12 months |