Measurement of Electrical Temperature: What You Need to Consider

Temperature sensor for measuring instrument close up in industry zone at power plant.

Are you shopping for a thermometer? There are many types of temperature measurement devices in the market today. These thermometers find applications in different industries. That is why choosing a thermometer is a challenge for many people. Here are the top five factors to consider when buying a temperature measuring device.

Ambient Conditions

The temperature device's performance can be affected by the temperature of the environment in which it is used. Some devices cannot work correctly in extremely cold or hot conditions. So, before you buy a temperature detection device, determine whether it can tolerate the conditions under which you will use it.

You must also consider whether the device will be exposed to abrasive or slush materials while in use. If that is the case, the device should be resistant to those materials. If you are going to use the device in an environment that requires sterility, as in the healthcare environment, then you must ensure the material it is made of can be sterilized.


When measuring temperature, accuracy is an especially important factor. Many industrial processes take place at specific temperatures. If your temperature measurement device is not accurate, then your production process will be compromised.

Industrial thermometers such as resistance temperature detectors (RTDs) are very accurate and can work even in conditions that are as harsh as those in turbomachinery. RTDs are also stable and durable, meaning they have very low margins or error. When dealing with the temperature-sensitive industrial process, insist on accurate temperature measuring devices.


Transmission is all about how the device allows you to read the temperature. Choosing between digital and analog temperature detection devices is important for accuracy. In industry, many things interfere with temperature measurements. Your device of choice should be able to tolerate these interferences so it can give accurate readings. Also, consider how you will connect the device to your system so it can transmit readings with ease.

Sensitivity or Responsiveness

A temperature measuring device should be able to respond even to small temperature changes. How sensitive a device is can make a big difference in an industrial process. When using bimetal thermometers, thermistors, or thermocouples, you can use thermowell to improve their responsiveness and protect them against damage from corrosion, metal velocity, and excessive pressure. It is possible to modify the thermowell's shape to improve sensitivity.


If there are lots of vibrations where the thermometer will be used, you should consider this. RTDs are not affected by vibrations because they are small. Temperature measuring devices should be simple, so they do not get affected by vibrations. The outer casing should also be strong enough to withstand strong vibrational forces, fatigue failure, and all physical strains it can be exposed to.


As you can see, your choice of temperature measurement device will largely depend on the conditions under which you are going to use it. You must also consider whether there are any government or regulation agencies' requirements for the type of thermometers needed in your industry.