wired vs. wireless temperature sensors

Wired or wireless temperature sensor - which to choose?

Temperature sensors are an extremely important component in many industrial processes. They make it possible to measure temperatures, control processes and protect installations from failures. Nowadays, there are different types of temperature sensors to choose from, including wired and wireless options. What are the differences between them and what benefits does each solution offer? Read this article and you will discover which version best suits your needs.

Wired temperature sensors

Structure of wired temperature sensors

Wired temperature sensors consist of two main components: the measuring probe and the cable protecting it from external factors.

Inside the probe, there is a temperature sensor that records temperature changes in the probe's environment. This element can be made of various materials, including platinum (e.g. resistive
Pt100 and Pt1000 temperature sensors), nickel.

Types of temperature sensor cables

The probe protection cable is designed to protect the measuring element from mechanical damage and from external influences such as moisture or dust. The cable is usually made of weather-resistant plastics such as Teflon or silicone. Where the cable has to operate under extreme conditions, such as high temperatures or aggressive chemical environments, special
glass fibre or quartz fibre cables are used.

Resistance temperature sensor with connecting cable

Advantages of wired temperature sensors

One of the biggest advantages of wired temperature sensors is their reliability. In general, wired temperature sensors are less susceptible to
interference and vibration, which means they are more stable and accurate in measuring temperature than wireless versions. In addition, wired temperature sensors are also easier to install and use.

Disadvantages of wired temperature sensors

Wired temperature sensors, however, have limited mobility, which can be a major disadvantage for some applications or even preclude their use.

Wireless temperature sensors

Design of wireless temperature sensors

Wireless temperature sensors consist of a measuring probe and a transmitting/receiving transmitting and receiving module. This probe measures the ambient temperature and transmits the signal to a wireless transmitter, which can be integrated into the sensor or separate from it. The transmitter converts the signal from the sensor into a radio signal and transmits it to the receiver. The receiver can be connected to a control device to enable real-time temperature control and monitoring.

Advantages of wireless temperature sensors

  • Wireless temperature sensors have a number of advantages over wired ones, such as:
  • No wires - wireless sensors do not require the use of cables, making them easier to install and saving time and money on installation.
  • Possibility of installation in difficult accessible locations - wireless temperature sensors can be installed in hard-to-reach places where it would be difficult or impossible to install wired temperature sensors.
  • Remote monitoring capability - wireless temperature sensors allow temperature to be monitored remotely, enabling rapid response to real-time temperature changes.
  • Ease of portability

Plug-in wireless temperature sensors such as WTRANS can find applications in the food industry

How do I choose the right temperature sensor?

  • The choice between a wireless and wired resistance temperature sensor depends on the specific requirements of the measurement application. Here are some factors to consider:
  • Distance between sensor and receiver: wireless sensors tend to have a shorter range than wired sensors, so when the distance between the sensor and the reading device is large, it is better to opt for a wired sensor.
  • Operating conditions: If the operating conditions are extreme, such as high vibration, oscillation, dust or moisture, a wireless sensor may not be robust enough and a wired sensor may be a better choice.
  • Speed of response: If a fast response to temperature changes is required, then a wired sensor may be a better choice, as wireless sensors tend to have a slightly delayed response compared to wired sensors.
  • Installation: Wireless sensors are easier to install as they do not require cables. This means they can be easier to use and install in hard-to-reach areas.

In summary, choosing between wireless and wired temperature sensors depends on a number of factors. If you need help selecting the right temperature sensors for your industrial process, contact JUMO. Our team of experts will advise and assist you in selecting the right solution for your application.

Check out our range of products! We have, among others, resistance temperature sensors and thermoelectric sensors.

Wireless temperature sensors allow temperature measurement in hard-to-reach places