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Tradeshow-Host-2025

Testo Sensor GmbH at the Host 2025 in Fiera Milano

There is much to discover:

Product presentations of our latest temperature sensor innovations
Exclusive insights into OEM solutions for coffee machines and catering equipment
Personal consultation with our temperature sensor experts
Networking with industry professionals

Our speciality: Customised temperature sensors for:

Coffee machines (steam wands, boilers, milk frothers)
Steam cookers & ovens
Refrigeration & deep-freeze technology

From the initial idea to series production – everything from a single source! 🚀

📅 17–21 October 2025
📍 PAVILION 8P, STAND D55
🌍 Milan Rho, Italy

Make an appointment with us now!

Temparature probes for professional coffee machines

Precise temperature control is at the heart of every professional coffee machine and plays a decisive role in determining the quality of the end product.

As an OEM specialist, Testo Sensor has been developing customized temperature probes for over a decade, which are precisely tailored to the specific requirements of the various measuring points in coffee machines, such as:

steam wands
milk frothers
boilers and cup warmers

Designed for a long service life and comprehensively qualified with up to 250,000 temperature cycles, the sensors guarantee maximum reliability even under extreme conditions.

Semi-automated series production with 100% final testing ensures a field failure rate of less than 400ppm while offering flexible logistics solutions such as KANBAN or consignment stock.

Steam wands

Temperature probe for steam wands

Temperature range: +120 to +140°C
Material: Temperature-resistant material, steam-tight and moisture-proof
Special features: Resistant to sudden and rapid temperature changes
Certification: Food-safe
Our particular strength: Customized designs and assemblies tailored to your application are possible

Milk foamer

Temperature probe for milk foamer

Temperature range:
-35°C to +120°C
Response time:
t63 < 1.0s (< 0.5s in flow-through condition)
Certification: Food-safe according to NSF/FDA/LFGB
Special feature: Combined temperature and level solution for foam optimization
Housing: Stainless steel ceramic sleeves with customer-specific geometry

Boiler probes

Probe (multi-) boiler systems

Temperature range:
85-96°C, up to 150°C possible
Pressure resistance:
up to 12.5 bar
Response time:
t63 < 1.2 seconds
Mounting options: Screw-in, cap nut, push-in system
Materials: Peak, stainless steel, Ecobrass, and brass
Innovation: Combined temperature/level sensors in ceramic or stainless steel housings for dual measurement

Level Detection

Level Detection – Level Measurement

Technology: Temperature and level measurement in one
Areas of application: Boiler water level, milk level in frothers
Functional principle: Conductivity measurement in combination with a temperature probe
Benefits: Prevents dry running, optimizes milk foam quality, detects minimum fill levels
Housing variants: Ceramic or stainless steel depending on the application

Additional applications and special services

Beyond coffee machine technology, Testo Sensor has established itself as a reliable partner for demanding temperature measurement tasks in professional catering and food technology. Our portfolio includes specialised solutions for cooking ovens and deep-freeze applications as well as comprehensive packaging services. The combination of technical expertise and flexible manufacturing results in tailor-made sensor solutions that are precisely tailored to your individual requirements as a customer – from innovative mounting solutions to complete cable assemblies.

Cooking chamber

Temperature range: up to 300°C in high humidity conditions
Core temperature probe: Fast response time for precise cooking processes
Oven chamber probe: For monitoring the cooking chamber temperature
Resistance: Resistant to aggressive cleaning agents and steam
Certification: Food-safe and dishwasher-safe
Mounting: Pressure-tight bushings for oven wall mounting

Cooling applications

Temperature range: up to 300°C in high humidity conditions
Core temperature sensor: Fast response time for precise cooking processes
Oven chamber sensor: For monitoring the cooking chamber temperature
Resistance: Resistant to aggressive cleaning agents and steam
Certification: Food-safe and dishwasher-safe
Mounting: Pressure-tight bushings for oven wall mounting

Mounting systems

Spring clips: For tool-free installation in pipes
Magnetic mounts: Flexible positioning on metallic surfaces
Threads and flanges: Customised screw-in variants
Bayonet locks: For quick and secure sensor replacement
Immersion sleeves: Thermally optimised for precise medium measurement
Development: Joint coordination for specific installation conditions

Cable assembly

Temperature range: up to 300°C in high humidity conditions
Core temperature sensor: Fast response time for precise cooking processes
Oven chamber sensor: For monitoring the cooking chamber temperature
Resistance: Resistant to aggressive cleaning agents and steam
Certification: Food-safe and dishwasher-safe
Mounting: Pressure-tight bushings for oven wall mounting

Your contact persons in sales

About the Testo Sensor GmbH

Testo Sensor GmbH was spun off in 2010 as a subsidiary of Testo SE & Co. KGaA. As your partner for temperature probes, we specialize in the development and manufacture of application-specific temperature probes, temperature probe assemblies and complete system solutions consisting of probe, mounting and the required qualification stress tests.

Let us convince you of our competence. We focus on what we know perfectly—temperature measurement in our core industries: in heating systems, in heat meters, in the gastronomy sector (e.g. coffee machines) as well as in machine and apparatus construction.

In these areas, we would like to be your leading supplier of temperature probes and convince you of our value in each of your projects. For each field of application in our core industry, we can draw on a broad portfolio of different designs of temperature probes, whose design has been specially developed for the respective application and measuring task and fully qualified on our inspection and test stands.

We always offer you the complete package: the specifically developed technical solution, zero-defect quality (< 400ppm field failure rate), 100% delivery reliability integrated into your logistics processes and all this at a performance-based, competitive price.

Now new: Temperature probe for heat and cold meters

An important component of heat meters are the precise, calibratable temperature probes according to DIN EN1434 for determining the temperature difference at the flow and return of the heating.

We produce these probes according to your specific requirements, on request also paired with all relevant standards and guidelines for heat meters PTB-certified.

We measure your probes on our in-house, highly automated pairing test bench and ensure that you receive perfect twin temperature probes for the inflow and return in sets.

Our service package: What we offer you

Specification and construction

We are happy to be your partner and specialist for application-specific temperature probes. You will always have fixed and competent contact people – for your purchasing department, for your developers and technicians, for your quality managers and for your dispatchers and logisticians.

Specification: Together with you, we work out which specific requirements your temperature probe must fulfil for your application in the long term. In our test bench laboratory, we carry out elaborate stress tests on the temperature probes using time-lapse techniques and as a result ensure that your requirements are demonstrably and permanently met.

Construction: Our engineers develop and design your temperature probe type according to your specifications and always with the target application in mind. In addition, every newly developed probe type is subjected to intensive in-house stress tests before it is released for series production by development and quality management.

Sample and prototype construction

We manufacture sample probes, prototypes, and field test probes at our site in Lenzkirch manually and thanks to pre-series tools.

These sample probes can be pre-qualified in our laboratory so that you can use functional samples in your field tests and ensure that you receive meaningful field test results.

Qualification

The probes that are ready for series production are subjected to the necessary stress tests, endurance tests and functional tests on our test stands in our in-house laboratory and, if necessary, at our accredited partners, and corresponding test reports are prepared for your quality management and purchasing department.

Through our active participation in various committees, we ensure that we are always up-to-date regarding the requirements to be met.

In our laboratory, we can also carry out complex and very comprehensive qualifications for you, such as the qualification in endurance stress tests, which takes about two years, to prove the suitability of the temperature probes for use in heat pump applications. These are not only exposed to changing temperatures in our temperature baths, but also have to withstand vibrations and the influence of aggressive media such as salt spray reliably and without damage—maintenance-free for up to 15 years in the field within the specification.

For the temperature probes for heat meters, we have developed our own highly automated pairing test rig that meets the highest standards set by the PTB (Physikalisch Technische Bundesanstalt) and has been approved and certified accordingly.

This ensures that we can pair these specially designed probes with high accuracy and efficiently carry out further very precise temperature measurements.

Series production

In series production, every probe produced is subjected to a meaningful, 100% final function test. We manufacture your probes in our production facility in Shenzhen or in Lenzkirch here in Germany.

Our manufacturing philosophy

Semi-automated, modular series production forms the necessary basis for the economical manufacture of smaller and larger quantities in zero-defect quality.
Through movable production modules, such as the automatic soldering machines, potting and dosing machines or thus the sensor positioning devices, our production lines can be converted and adapted to technically modified probes at lightning speed and at low cost.
Fluctuations in demand of +/-20% for each probe type can be cushioned as standard and without placing a particular burden on production.
The production lines are set up in the one-piece flow production process methodology. This ensures that each employee always produces the entire probe. By subtracting or adding more employees, the capacity and thus the output of each line can be quickly adjusted to any change in demand.
During production, precisely defined In-Process-Quality-Control (IPQC) checks are carried out regularly. This ensures that each production process operates stably, within the permitted tolerance limits.
A complete, meaningful and documented 100% final inspection ensures the quality standard once again before the temperature probes are packaged and shipped.

Logistics

For us, 100 % delivery reliability is not an empty phrase, but a claim that we actually ensure through appropriate buffer stocks, even if logistics processes are difficult in turbulent times. For us, on-time delivery is just as important as the perfect design of your temperature probe or series production in 0-defect quality.

With an average range of approx. 3 months in the buffer stock, we can easily cover demand fluctuations of +/- 20 %. This leaves sufficient time for the production of new probes and refilling.