COMET Logger U4130 - Compact thermometer - hygrometer - pressure gauge

U4130 - Compact thermometer - hygrometer - pressure gauge
This model is designed to measure temperature, relative humidity, dew-point temperature and barometric pressure by internal sensors. Barometric pressure can be measured as absolute or recalculated to sea level. No additional probes or sensors can be connected. It is characterized by a simple and compact design and a relatively long response in the measured quantities, compare to model with external probes. The sensors are located under the grid on the front and side of the unit The device is suitable for measuring in places where there is no rapid change in temperature or relative humidity, and there is no condensation of water vapours. The device is placed directly in the measured space. The battery in the device cannot be charged. It is recommended to calibrate this device in the laboratory with the unscrewed bottom lid of the box to allow the air to flow from the back of the electronics. When air flow in the range of 0.5 - 1 m/s perform reading after about 4 hours. The closed device reaches a difference of approximately 2 %RH when inserted in the humidity chamber, then dramatically slows down. Precise reading takes many times longer time than with the open rear lid.