Complaint
DESCRIPTION:
YW-721 is an instrument for pressure difference measurement. It is often used to measure the small pressure difference (such as detecting the permeability of the filter), air flow pressure, small suction force, and pitot tube gas flow rate measurement.
FEATURES: | APPLICATIONS: |
| 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 |
Q. Do you make custom products?
A. Yes, we offer OEM/ODM solutions for our clients.
Q. How long is your lead time for samples?
A. 5-7 days. For bulk orders, 10-30 days depending on the quantity.
Q. What is your terms of payment?
A. 100% for small orders. 30% in advance as deposit and 70% balance before the delivery.
Q. How can we pay?
A. You can pay via T/T, PayPal and Western Union.
