Tear humidity sensors in a long time in a long time working condition, coupled with sometimes in the humid, dirty, too cold and too hot environment, often cause temperature and humidity sensors to occur in a variety of failures, affecting the accuracy of the temperature and humidity data, and even shorten the service life of the temperature and humidity sensors and so on. Therefore, when the failure occurs, the staff need to quickly solve the problem and restore the normal work of the sensor.
Soil temperature and humidity sensors
How to deal with the temperature and humidity sensors when there are abnormal readings, the background can not be displayed, frequent false alarms and other phenomena.
1, first check the temperature and humidity sensor power supply is normal, to rule out abnormal power supply caused by the sensor can not run normally, but also need to check the power line, power adapter and other equipment to rule out the possibility of power failure.
2, temperature and humidity sensors may be affected by dust, oil and other pollutants, resulting in inaccurate measurements or failure, this time you can use a clean cloth or cotton swabs to gently wipe the surface of the sensor, be careful not to use organic solvents or solvents such as alcohol, so as not to damage the sensor.
3, the use of a period of time after the temperature and humidity sensor may be measured with the actual temperature, humidity does not match, this time may need to calibrate the sensor. Calibration can be measured by reference to the star value of the equipment to adjust the output value of the sensor to improve its accuracy.
4, temperature and humidity sensors and data acquisition equipment between the connection may appear to cause failure. At this time we need to check the connection line to ensure that the connection is solid, no loose or poor contact. If necessary, you can replace the connection line or connector.
5, temperature and humidity sensors, "virtual break virtual short" phenomenon, this is generally the temperature and humidity transmitter is sometimes normal, sometimes not normal. Most of the reasons belong to the temperature sensor package quality problems, replace the probe can be.
6, if after the above method still can not solve the problem, may need to replace the sensor. Select the appropriate brand and model, to ensure that the temperature and humidity sensor quality and reliable, and in accordance with the manufacturer's installation and use instructions for operation.
Temperature and humidity sensor
7, temperature and humidity display no change: may be the sensor sealing is not good, resulting in poor contact. You can check whether the sensor connector is loose, broken or have a small hole, and replace the sensor shell to ensure good sensor contact.
8, the meter on the power no response: may be the power cord contact error. Check whether the power cord connection is abnormal, and make sure the power cord is connected correctly.
9, temperature and humidity recorder can not be normal communication: may be the communication line is reversed or disconnected. Check whether the communication line is reversed or disconnected, and make sure the communication line is connected correctly.
10, temperature and humidity transmitter output value is abnormal: may be a short circuit or broken sensor. Check whether the sensor plug has fallen off, not plugged tightly or line failure, replace the damaged parts or replace the sensor.
11, temperature and humidity alarm false alarms: may be the sensor itself is not good quality, installed in high temperature or moisture places leading to short circuit circuit circuit boards, long-term use leading to aging and other reasons. Choose a good quality sensor, choose the appropriate installation environment and regular maintenance of temperature and humidity sensors can be avoided false alarms.
12, the background can not display temperature and humidity data: may be a sensor failure, incorrect parameter settings, transmission line failure or host serial port function is not open and other reasons. Check whether the sensor is faulty, check whether the parameter setting is correct, troubleshoot whether the transmission line is faulty, check whether the serial port function of the host is on, etc., and deal with the problem accordingly.
13, the sensor repeated automatic restart: the battery may be dead or power problems. Replace the battery/check the power supply can solve the problem.