WATERPROOF THERMO / HYGROMETER PWT-401


PWT-401 measures relative humidity, air temperature, air pressure, enables surface temperature measurement and determines the dew point, what enables deciding whether painting the surface is advisable in existing conditions.

Characteristic features:



The sensor can't be used for measurements in dusty atmosphere or in presence of agressive gases.

TECHNICAL DATA
Function Humidity Temperature Atmospheric pressure
Range 0 ÷ 100 % RH* -40.0 ÷ 70.0 °C 800 ÷ 1100 hPa
Resolution 0.1 or 1 % RH 0.1 °C 1 hPa
Accuracy (±1 digit) 10 ÷ 90 % RH ±1.8 % **
beyond this range ±4 % **
±0.8 °C** ±2 hPa**
Reaction time t90 < 10 s < 8 s -
Hysteresis < 1 % RH - -
Long-term sensor drift 0.5 % RH / year - -
Surface temp. measuring range -50.0 ÷ 100.0 °C
Dew point temperature range -199.9 ÷ 70.0 °C
Power Rechargeable batteries: 2x AA 1.2 V, 5 V / 1000 mA micro USB power adapter
Weight 180 g
Dimensions(mm) L = 149, W = 82, H = 22
* Condensation of water on the sensor requires drying, wet sensor has wrong indications.
** The accuracy with the temperature sensor.