Last updated: August 10, 2021

Welcome to our big temperature logger test 2022. Here we present the temperature loggers that we have tested in detail. We have compiled detailed background information for you and also added a summary of customer reviews on the web.

We would like to make your purchase decision easier and help you find the best temperature logger for you.

You will also find answers to frequently asked questions in our guide. If available, we also offer interesting test videos. Furthermore, you will also find some important information on this page that you should definitely pay attention to if you want to buy a temperature logger.




Summary

  • Temperature loggers are processor-controlled measuring devices for recording and evaluating measured temperature data over a certain period of time. With the help of external or internal sensors, the temperature is measured and can then be transferred to a computer and read.
  • The temperature loggers are available in different versions for different areas and can be used either mobile or stationary. Especially in industry, the measuring instruments play an important role. They are used to measure, monitor and control temperatures during a specific process.
  • In addition to recording temperatures, most measuring devices have additional functions such as measuring air pressure and humidity. When buying, particular attention should be paid to data transmission and measurement accuracy.

The Best Temperature Logger: Our Picks

Guide: Questions you should ask yourself before buying a Temperature Logger

Before buying a temperature logger, you should acquire some background information. We have summarised this information clearly and concisely in the following paragraphs.

What is a temperature logger?

A temperature logger is a small computer consisting of a microprocessor, a storage medium and interfaces, which is controlled by an operating system. The terms "temperature data logger" or "temperature recorder" are often used as synonyms.

The device records the temperature with the help of sensors over a certain period of time, which can be set individually. The recorded measurement data can then be transferred to the user's own computer either by cable or wirelessly via Bluetooth or WLAN using the interface on the temperature logger.

Temperaturlogger-1

With the help of compatible software, the measurement data recorded by the temperature logger can be processed, analysed and evaluated down to the smallest detail. (Image source: unsplash.com / chris liverani)

In addition to recording measurement data, temperature loggers are also used for monitoring. In doing so, incidents such as sudden changes in temperature are recorded, which can then be analysed.

In particularly critical cases, the temperature logger can be equipped with a so-called "heartbeat signaller", which immediately alerts the person in charge, e.g. via SMS.

What is a temperature logger suitable for?

The area of application of a temperature logger is manifold and can be used both stationary (living rooms or bathrooms) and mobile (for transport monitoring). However, the device is also used primarily in industry and is an important tool in many areas.

In the following paragraph, we have compiled a small overview of the possible areas of application.

Field of application Function
Botany For monitoring greenhouses
Home For monitoring the temperature of living rooms and bathrooms
Gastronomy For monitoring the correct cooling of food
Medicine For data collection during storage and transport of, for example, blood samples and blood preserves
Museums, galleries, archives For monitoring sensitive exhibits
Transportation For measuring and monitoring refrigerated or heated products

A temperature logger is used in many fields and industries and is an important tool for measuring, controlling and monitoring temperatures as well as temperature fluctuations. Thanks to its compact design, these devices can be used without hesitation even when space is limited.

What does a temperature logger cost?

The price range is extremely wide, depending on the variant and area of application of the temperature logger. While disposable temperature loggers for the transport sector are available from about 15 euros, a sensor temperature logger for the pharmaceutical or food industry, for example, can cost up to 900 euros.

If you want to buy a decent and reliable device for your own four walls, you should calculate between 60 - 70 euros.

Did you know that you can also rent a temperature logger?

Depending on its use, the purchase of a temperature logger can be very expensive. Some dealers offer the option of renting a temperature logger for a certain period of time. This makes sense especially if the temperature logger is only to be used for a short time and it is not worth buying a new one.

In the following, we have compiled a small overview of the respective variants and the different price ranges so that you can get a quick overview.

Type Price range
Sensor temperature logger Approx. 20 - 900 €
Disposable temperature logger Approx. 15 - 30 €
Mini temperature logger Approx. 20 - 110 €
PDF temperature logger Approx. 15 - 80 €

You should therefore consider the area of application and purpose for which you want to use a temperature logger, as not every device necessarily makes sense for the respective area of application.

What alternatives are there to a temperature logger?

There is currently no good alternative to a temperature logger.

There are so-called "thermohygographs" that work on the same principle, but are not electronic. The device is a combination of a thermograph and a hygograph, which are mainly used in weather stations.

The maximum measuring period is 31 days and the measured values are recorded as curves on paper. These devices are therefore not suitable for every area of application and are very expensive. In addition, it is much more time-consuming to subsequently analyse and evaluate the measurement data.

Temperaturlogger-2

The thermohygrograph is an analogue combination device and can therefore also measure the relative humidity during a certain time in addition to the temperature reading. (Image source: pixabay.com / MAKY_OREL)

Then there are the quite normal analogue or digital thermometers for measuring and checking the temperature. The big disadvantage, however, is that no measurement data can be recorded and analysed or evaluated over a period of time. They only show the current value of the temperature.

What Types of Temperature Loggers are there and which is the right one for you?

If you want to buy a temperature logger, you can basically choose between four different types:

  • Sensor temperature logger
  • Disposable temperature logger
  • Mini temperature logger
  • PDF Temperature Logger

In the following paragraphs, we will show you what the difference is between the four types of temperature loggers and what advantages and disadvantages they each have.

What distinguishes a sensor temperature logger and what are its advantages and disadvantages?

A sensor temperature logger is a processor-controlled data logger that has one or more channels and to which several sensors can be connected simultaneously.

With the help of the sensors, measurement data, such as temperature, can be recorded. The data is then stored on the data memory via a so-called analogue-digital converter. Afterwards, the logged information can be transferred to one's own computer via an interface (USB, Bluetooth, WLAN, etc.) and analysed using compatible software.

Another variant is the direct transfer of the measurement data via Bluetooth or WLAN to the computer, which is stored on the hard disk or the data transfer as well as storage on a cloud.

The measurement data can be transferred to the computer either wired or wirelessly. Thanks to multiple channels, different sensors can be attached at the same time and different measured variables can be recorded. These features make the device an all-rounder among temperature loggers.

A great advantage of this storage variant is that no measurement data is lost when the battery or rechargeable battery runs out. Furthermore, thanks to several channels, several sensors for different measured variables, such as temperature, air pressure and humidity, can be attached.

With the help of a long connection cable, the connected sensors can also reach places that are difficult to access.

However, the purchase of a sensor temperature logger is expensive. A good and reliable device can cost 60 euros or more. In the following paragraph we have listed the most important advantages and disadvantages.

Advantages
  • Measurement data are not lost in the event of a device failure
  • Simultaneous recording of several measured variables
  • Automatic recording of measurement data over a certain period of time
  • Versatile use
  • High storage capacity
  • Also suitable for places that are difficult to access
Disadvantages
  • Expensive
  • The software of some sensor temperature loggers is not compatible with all operating systems
  • Battery must be replaced after some time

What distinguishes a disposable temperature logger and what are its advantages and disadvantages?

A disposable temperature logger can only be used once and often have a service life of about one year. The devices are equipped with a USB interface and therefore do not require any extra hardware.

Additional software is also not necessary, as the evaluation is done directly in a PDF document.

The disposable temperature loggers were primarily designed for monitoring transports and are a favourable variant to the other types of temperature loggers. This variant is particularly useful when consignments are exported and a return is not profitable for cost reasons.

However, if the one-way temperature logger is damaged during transport for any reason, the measurement data may no longer be able to be evaluated. In the following paragraph we have compiled an overview of the most important advantages and disadvantages.

Advantages
  • Cost-effective
  • No additional hardware and software required
  • Automatic recording of measurement data over a certain period of time
  • Small and practical
Disadvantages
  • Data may be lost in case of transport damage
  • Can only be used once
  • Only one measured variable is recorded
  • Low storage capacity

What distinguishes a mini temperature logger and what are its advantages and disadvantages?

Mini temperature loggers are small practical measuring instruments that can have internal or external sensors. Here, too, several sensors can be installed, which means that different measured variables can be recorded at the same time. With the help of a long connection cable, the connected sensors can also reach places that are difficult to access.

They are used where size plays an important role and takes up little space. Despite its compact size, this device has a high storage capacity. The measurement data can be conveniently transferred to the computer via USB and evaluated. Here, too, the information is retained in case the unit should fail.

Did you know that the mini temperature loggers can also be used for kitchen appliances?

Thanks to the compact size of the mini temperature logger, it fits perfectly in a refrigerator or freezer. The device can easily withstand temperatures as low as -30 °C. This makes it possible to monitor the temperature.

Optionally, mini temperature loggers can be purchased that transmit the measurement data directly to the computer via Bluetooth or WLAN or store it in a corresponding cloud.

However, the purchase of a mini temperature logger is not inexpensive and the corresponding software is needed to evaluate the data. High-quality devices start at around 50 euros. In the following paragraph we have listed the most important advantages and disadvantages.

Advantages
  • Measurement data is not lost if the device fails
  • Simultaneous recording of several measured variables
  • Automatic recording of measurement data over a certain period of time
  • Versatile use
  • Compact size
  • Choice of external or internal sensors
Disadvantages
  • Expensive
  • The software of some mini temperature loggers is not compatible with all operating systems
  • Battery must be replaced after some time
  • Additional software required

What distinguishes a PDF temperature logger and what are its advantages and disadvantages?

The PDF temperature logger is a special product variant and has a USB interface. When the logger is connected to the computer, a PDF document is immediately generated that contains the recorded measurement data and additional graphics for the data.

Because of this function, no extra software is needed. On the computer, it is recognised as a normal mass storage device and the data can thus be retrieved from any computer.

If the PDF temperature logger is damaged, the measurement data can be lost. In addition, only one measured variable can be recorded, as there are no channels for attaching sensors. In the following paragraph we have listed the most important advantages and disadvantages.

Advantages
  • Measurement data are available immediately
  • Automatic recording of measurement data over a certain period of time
  • Versatile use
  • No additional software necessary
Disadvantages

    Measurement data may be lost in case of failure

  • Only one measurand can be recorded
  • Battery must be replaced after some time

Buying Criteria: Use these Factors to compare and evaluate Temperature Loggers

In addition to the different types of temperature loggers, there are other criteria that you should consider before buying. You can compare and evaluate temperature loggers based on the following factors:

In the following sections, we will go into more detail about what you need to look for in the respective purchase criteria.

Memory space

Basically, the size of the memory depends on the interval of the measurement data and the intended use. As a rule, information on the memory capacity can always be found in the product description.

Logically, the smaller the measurement interval, the more storage space is required, as more data is recorded. Smaller measurement intervals are particularly necessary when the recording of temperature fluctuations plays an important role.

With regard to the purpose of the application, a larger memory is needed, for example, for monitoring exhibits in museums than for monitoring export shipments in the transport sector, since the period of the data to be measured is considerably longer.

Therefore, before buying, you should consider which measuring interval you need and what you want to use the temperature logger for.

Data transmission

Depending on the model, the transmission of measurement data for temperature loggers with internal memory can be wired or wireless.

To ensure that the transfer of the measurement data to the computer does not take a lot of time, the device should have a fast data transfer rate. However, it is also a prerequisite that the computer supports the respective transfer rate.

If, on the other hand, the measurement data is transferred directly from the temperature logger to the computer or to a cloud, the wireless range must also be taken into account. Otherwise, the connection may be interrupted and the measurement data may not arrive. In addition to the manufacturer's specifications, the range also depends on the structural conditions when used inside a building.

While transmission through several thin walls usually works without problems, the signal may not reach several thick walls.

Temperaturlogger-3

The transmission rate of the temperature logger via WLAN alone is not sufficient for a fast connection. The transmission from one's own modem must also have enough speed so that larger amounts of measurement data arrive quickly at the end device. (Image source: unsplash.com / web hosting)

Since the manufacturer's specifications do not necessarily provide information on this, you should test this yourself and then decide on the best device.

Measurement accuracy

There can be big differences in quality when it comes to measuring accuracy. If the temperature loggers have too much room for error, this can have negative consequences, especially in industry.

Furthermore, you save a lot of trouble and work in the form of re-measurements if the device is very accurate. Since the respective sensors are responsible for this, special attention should be paid to their workmanship when purchasing.

To ensure measurement accuracy, the temperature loggers are calibrated at regular intervals and readjusted if necessary.

A look at the manufacturer's specifications can also provide information about the quality. High-quality sensors can be recognised, among other things, if the manufacturer indicates not only the possible temperature deviation in percent, but also other values, such as how large the error is in relation to the relative temperature.

Software

If your temperature logger requires additional software, you should take a look at which operating systems it supports and whether your computer meets the system requirements.

If you need more than one temperature logger, it is advisable to choose one manufacturer, as other models are usually only supported by their own software.

If you do need to use temperature loggers from different manufacturers, then you should choose the devices that do not require software. One example is cloud-based temperature loggers.

The software itself should be user-friendly and easy to use, as well as efficient and reliable.

Additional functions

As already mentioned, most temperature loggers also offer the function of measuring air pressure and humidity.

Either the functions are already integrated into the device or you connect additional sensors to the temperature logger, provided it has several channels.

In the following paragraph, we have compiled a clear table so that you can get a quick overview of which one is best suited for you.

Function Description
Air humidity With the help of the air humidity measurement, you can check how high the risk of mould formation is, for example, at home.
LCD display The measured values can be read directly from the integrated display without having to connect the device to the computer first.
Alarm If measured values are exceeded, either a signal sounds or a notification is sent to the end device.
Calibration The measurement accuracy can be determined and documented. In the event of deviations, the temperature logger is readjusted.
Smart Sensor The temperature logger can be connected to the smartphone or tablet via Bluetooth and thus enables monitoring in real time.

Facts worth knowing about Temperature Loggers

Now that you have collected enough information about temperature loggers, we would like to give you some more information.

If you already own a temperature logger, you might find some valuable tips here.

How do I install a temperature logger?

The disposable and PDF temperature loggers do not need to be installed or set up, they are ready to use. The sensor and mini temperature loggers, however, require software, which is used to program the logger, read it out and process and evaluate the recorded measurement data.

The software varies from manufacturer to manufacturer. When you buy a temperature logger, it comes with a CD and an instruction manual for installation. You should make sure that your operating system supports the software and that it meets the system requirements. The device itself can be installed in any location.

How do I calibrate my temperature logger?

To ensure the measuring accuracy of the temperature logger, it is recommended to calibrate it annually and to adjust it if necessary. This involves comparing the device with a standardised device and then correcting any deviations.

With most temperature loggers, the software offers so-called calibration tools, with which you can carry out this process yourself. However, if the calibration has to meet certain standards, this is checked in a laboratory with the help of a certificate. This is often done, especially in industry.

What do I do if my temperature logger no longer works?

If the temperature logger no longer works, then the batteries should be replaced, as they may be empty. However, if the reason lies elsewhere, it is not advisable to repair the device yourself, as many mistakes can be made due to the sensitivity and the warranty may be voided.

Most manufacturers offer a one or two-year warranty. In this case, the device can be sent free of charge and will then be checked for faults. If the conditions of the warranty are met, the device will be repaired free of charge or replaced with a new one.

Image source: Uttamaharad/ 123rf.com

Reviews