There are many areas in industry where the precise indication of temperature is crucial. Deviations of not even one degree can have devastating consequences! So it’s good that the digital thermometer reliably indicates the correct temperature and is therefore suitable for use in a variety of fields. Whether in catering or in the production and processing of food, in the monitoring of cold chains or in checking the function of air conditioning systems: a digital thermometer has become indispensable.
Digital thermometers: Indispensable aides in industry and food production
Testo's digital thermometers boast the following features: H2>
- Robust, handy workmanship
- Precise sensor technology and accurate measurement results
- Clear presentation of values thanks to a large display
- Different probes can be used for different areas of application
Infrared thermometer H3>
Surface temperature measuring instruments H3>
Air temperature measuring instruments H3>
Thermal imagers H3>
Temperature data logger H3>
A digital thermometer is familiar to everyone, from its use at the doctor’s or at home. If fever needs to be measured, you'd be hard pressed to even find an analog thermometer; because these days modern digital thermometers are the norm. These use a relatively simple technique: the thermometer uses a sensor in the tip for the measurement. This, in turn, has an electrical resistance that reacts to changes in temperature. Semiconductor sensors are used for this purpose, and these become more conductive when influenced by temperature, allowing a larger current to flow. The digital thermometer shows the temperature calculated from the current flow on the display. What is common practice in medicine or domestic applications has long been used in industry too. Here, however, we find another generation of digital thermometers, which make the continuous development or the temperature curve visible and thereby make evaluations possible.
We’re talking about temperature data loggers, in which the measured values are stored and can thus be evaluated. They also serve as proof, for example, of a seamless cold chain. These days, a digital thermometer is used wherever temperature measurements are required, and different types of thermometers are conceivable:
- Infrared thermometers (measurement from a distance)
- Surface thermometers (with fixed or interchangeable probes)
- Air temperature gauges
- Penetration thermometers (e.g. for the preparation of food)
- Digital thermometers for immersion measurements
These are only a small selection, because digital thermometers are used wherever temperatures and observance of these are important. They cannot be replaced by other measuring instruments, but are often used in combination with them. In that event, temperatures and humidity values are measured simultaneously.
There is probably no industrial sector that can make do without measuring temperatures. The catering sector cannot make do without a meat thermometer, which is inserted into the cooked product in order to measure the ideal temperature, and has a long probe for this purpose. These types of thermometers can also be used for measurements in liquids, sometimes using an interchangeable probe.
Thermal imagers are indispensable in the building trade and in heating engineering. They make possible cold bridges in buildings visible and help locate unwanted heat sources. They are also used to assess the energy efficiency of a building and are also used in industry, science and research.
With smartphone operation
These days, a digital thermometer is no longer simply held in the hand and immersed at the surface that needs to be measured or in the solution to be defined, as was usually the case in the past. Modern use with a smartphone is possible, because smart technologies don’t stop at a digital thermometer. When using the Testo Smart Probes, for example, temperatures, humidity, speeds and other measurement parameters can be determined.
In many fields, it is essential to monitor the IAQ on a constant and permanent basis. Here the thermohygrometer is used, which continuously records the temperature as well as the humidity. The combination of digital thermometer and hygrometer can be used, among other areas, in:
- Residential buildings to determine the indoor climate
- In greenhouses to determine the climate for growth
- In archives for monitoring the IAQ
- In food warehouses to ensure the storage climate
In addition to a roasting thermometer, which establishes the ideal roasting temperature of meat, a barbecue thermometer for domestic use is also an important asset. When barbecuing or roasting food, if you wish to ascertain whether your steak is well-done or still bloody, you can rely on your experience and visual judgement, or you can also rely on an appropriate digital thermometer. Doing the latter, of course, means that the values will be much more reliable and can be determined more accurately.
The digital thermometer is used here as a penetration thermometer. However, you should make sure that the temperature probe has a sufficient acclimatization time. Reading out too early often results in falsified measurement results. For individual applications, temperature measuring strips are used, which fulfil their purpose in both the industrial and scientific sectors. As mentioned above, digital thermometers are used as clinical thermometers, as room thermometers or as combined temperature/humidity meters.