{"id":23442,"date":"2025-01-17T12:35:13","date_gmt":"2025-01-17T11:35:13","guid":{"rendered":"https:\/\/dynatime.ch\/?p=23442"},"modified":"2025-03-09T13:07:28","modified_gmt":"2025-03-09T12:07:28","slug":"casiers-intelligents-pour-pharmacies-la-solution-pour-un-service-client-optimal-et-une-securite-renforcee-2","status":"publish","type":"post","link":"https:\/\/dynatime.ch\/en\/casiers-intelligents-pour-pharmacies-la-solution-pour-un-service-client-optimal-et-une-securite-renforcee-2\/","title":{"rendered":"Temperature probes for coffee machines: the complete guide"},"content":{"rendered":"
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The temperature sensor is an essential component of your coffee machine. It regulates the water temperature, ensuring optimum extraction of coffee aromas and the production of a perfect espresso. After analyzing competitor sites such as Italcoppie 1<\/sup>Fiyo 2<\/sup> and Green Plantation 3<\/sup>and identified frequently asked questions, such as how to test a temperature sensor 4<\/sup> and where to buy spare parts 5<\/sup>We've put together this comprehensive guide. It explores in detail the role, operation and different types of temperature probes for coffee machines. We'll also cover common failures, how to test a probe and where to get quality replacement parts.<\/p>

What is a coffee machine temperature probe?<\/h2>

The temperature sensor is a device that measures the temperature of the water in the coffee machine. More precisely, it measures the electrical resistance, which varies with temperature, and transmits this information to the electronic board.6<\/sup>. The electronic board then uses this information to determine and regulate the water temperature, ensuring the ideal temperature for coffee extraction.5<\/sup>. Too high a temperature can burn the coffee and make it bitter, while too low a temperature can lead to under-extraction and bland coffee.5<\/sup>.<\/p>

How does a temperature sensor work?<\/h2>

Most of the temperature sensors used in coffee machines are NTC thermistors (Negative Temperature Coefficient).8<\/sup>. Their electrical resistance varies with temperature: as temperature increases, resistance decreases.8<\/sup>. The coffee machine's electronic board measures this resistance and uses it to determine the water temperature.6<\/sup>.<\/p>

To regulate the temperature of the heating element, the temperature sensor works in conjunction with a thermostat, which may be of the snap disc or capillary type.9<\/sup>. The snap disc thermostat, generally found in domestic coffee machines, has a fixed temperature setting. The capillary thermostat, on the other hand, uses a liquid-filled tube to detect temperature changes. When the desired temperature is reached, the thermostat cuts off power to the heating element.<\/p>

Safety and protection against overheating<\/h2>

The coffee machines are equipped with a high-limit control, a crucial safety device that prevents the machine from overheating or burning out in the event of water shortage or heating element malfunction.9<\/sup>. This high-limit control is usually a snap disc thermostat or a thermal fuse.<\/p>

Some top-of-the-range coffee machines feature a thermostat with a manual reset function.9<\/sup>. If the high-limit control triggers, the thermostat can be reset at the touch of a button, which may avoid the need to replace the thermostat.<\/p>

Different types of temperature probes<\/h2>

There are various types of temperature probes for coffee machines, including :<\/p>

Sensor type<\/strong><\/p><\/td>

Features<\/strong><\/p><\/td>

Applications<\/strong><\/p><\/td><\/tr>

Resistor-mounted probes<\/p><\/td>

Attached directly to the resistor with thermal paste for improved conductivity6<\/sup>.<\/p><\/td>

Water temperature control.<\/p><\/td><\/tr>

Probes screwed to the boiler<\/p><\/td>

Screw directly onto the boiler6<\/sup>.<\/p><\/td>

Used on espresso machines.<\/p><\/td><\/tr><\/tbody><\/table>

Manufacturers emphasize probe robustness and watertightness, using overmolded cable joints or injection-molded connectors.1<\/sup>.<\/p>

Temperature sensor applications in coffee machines<\/h2>

Temperature sensors are used in various parts of coffee machines, including :<\/p>