First, the range of temperature and humidity transmitter As with measuring pressure and liquid level, the selection of temperature and humidity transmitters must first determine the range of the range. Under normal circumstances, the temperature range of the temperature and humidity transmitter is: -40 °C ~ 100 °C, and the humidity range is: 0-100%RH. The user proposes the measurement range to the temperature and humidity transmitter manufacturer according to the demand, and the manufacturer gives priority to ensuring that the performance of the temperature and humidity transmitter within the user’s use range is stable and consistent. Second, the measurement accuracy of temperature and humidity transmitter The measurement accuracy of the humidity and temperature transmitter is equally important compared to the measuring range of temperature and humidity. Each increase — percentage points. For temperature and humidity transmitters, it is a step up, or even a grade, of course, the sales price is also relatively different. In most cases, if there is no precise means of temperature control, or if the measured space is non-sealed, a temperature and humidity transmitter with a ±5%RH accuracy is sufficient. For local spaces that require precise control of constant temperature and humidity, or occasions where humidity changes need to be tracked and recorded at any time, then choose a temperature and humidity transmitter with an accuracy of ± 3%RH or more. Third, the output signal of the temperature and humidity transmitter The output signal of the temperature and humidity transmitter is available in three forms, current type, voltage type and digital type. Temperature and humidity transmitter current type is the output signal is 4~20mA, temperature and humidity transmitter voltage type output signal is 0-5VDC or 0-10VDC. The digital output signal of the temperature and humidity transmitter is RS485. For any questions such as product consultation, product customization, agent, technical inquiry, quotation, etc., please contact Xingyi hotline: 400-600-4496!