A temperature humidity meter is a device that measures relative humidity and temperature. Featuring a few easy to use controls, the meter displays different temperature points of the air surrounding the temperature humidity sensor including ambient, wet bulb, and dew point.
The terms probe, sensor, and transmitter describe a temperature humidity meter device. The probe is the part of the device that holds the humidity sensor. The probe is usually connected to the transmitter with a flexible cable or can be rigidly bound to it. The transmitter has a function to provide the output signal.
The temperature humidity sensor performance is a critical contributor to the quality of the humidity measurement. With that said, here are the sensor properties a temperature humidity gauge should have:
Fast response time: The response time refers to the speed of response when the sensor is exposed to a change in humidity. But in addition to the sensor, other factors can also affect the response time such as airflow, temperature and filter type. A blocked filter tends to lead a slower response.
Optimal measurement range: Choosing the right temperature humidity meter for your needs will depend on your application and operating temperature. Most of the humidity sensors available out there work over the full range from 0 to 100% RH, whereas there are some sensors designed for measurements in low humidities.
High accuracy: When selecting a temperature-humidity sensor, consider the following factors: Linearity over the working range; Stability over a period of time; Temperature dependence of the sensor and hysteresis and repeatability.
Choosing the right temperature humidity data logger for the job.
Regardless of your application, the total range of gas temperatures and expected water vapor levels are two things extremely important to deciding the optimal humidity parameters and the right instrument for the job. In addition, the process pressure should also be known within the process.
Nowadays, different manufacturers design and produce a range of temperature humidity meters able to measure relative humidity, temperature and dew point. Most of these devices feature built-in temperature compensation to avoid errors that may be caused by temperature variations and operation at extreme temperatures. Some models can also feature calculations for different humidity parameters.
You should be able to find a great selection of these devices available with different features on online and offline retailers.
It is important that you know that to extend the life of your temperature humidity meter, you should keep the sensor's protective shutter closed whenever the meter is not in use.