Classification and Function of NTC Temperature Sensor for Coffee Machine

Behind a good cup of coffee, water temperature control is a crucial part. In the professional brewing standard, 92 °C to 96 °C is recognized as the "golden temperature zone" for coffee extraction-too low will lead to insufficient flavor, and too high may cause excessive extraction and bitter taste. In order to accurately and stably control the water temperature in every brewing, the NTC temperature sensor plays a key role as a "temperature guard" in the coffee machine.



The operation logic of the coffee machine: precise temperature control, determine the flavor
The working process of the coffee machine is completed by multiple links-water heating, pressure control, extraction execution, etc., each step has an impact on the final taste. The heating element (such as a heating plate or heating rod) is responsible for heating the cold water to the target temperature, while the NTC temperature sensor monitors the temperature change in real time and feeds the data back to the main control system. According to the difference between the current temperature and the target value, the system automatically adjusts the heating power to keep the water temperature in the optimal state.

Subsequently, the water pump starts to work, injecting constant temperature hot water into the coffee powder layer to complete the efficient extraction process. All of this is based on the real-time and accurate temperature information provided by NTC to ensure that every cup of coffee has a full aroma and pure flavor.

Key Classification and Function of NTC Temperature Sensor
1. Heating pan NTC temperature sensor
Used to monitor the operating temperature of the bottom heating tray of the coffee machine. The sensor is close to the core of the heating area, senses temperature fluctuations in real time, and cooperates with the control panel to form a closed-loop adjustment mechanism:

When the temperature is close to the set upper limit, the system automatically reduces the heating power to prevent overheating;

When the temperature drops, the heating is quickly resumed, and the water temperature is kept between 92 °C and 96 °C.
This process ensures the stability of the water temperature and effectively avoids the problems of burnt bitterness or insufficient extraction.

2. Steam system NTC temperature sensor
Used in steam pressurization and milk foaming system to monitor steam outlet temperature. For example:
Steam up to 110 °C is required for latte milking;
American brewing requires hot water at about 94 °C.

The NTC sensor can achieve high-precision temperature control at the ± 0.3 °C level, and dynamically adjust the output according to different beverage processes to ensure that the flavor of each coffee is accurately presented.

Precise Selection Guide: Three Standards for NTC Temperature Sensors for Coffee Machines
In order to meet the strict requirements of coffee machines for temperature control, the following points should be focused on when selecting an NTC temperature sensor:

1. Temperature range adaptability
The selected sensor needs to cover the entire temperature change range (such as 20 °C ~ 120 °C) from the start of the cooler to the completion of brewing, so as to avoid temperature blind spots.

2. High-precision resistance matching
According to the requirements of the control system, select the appropriate resistance value range and accuracy level. For example, a thermistor based on 90 °C is most suitable for controlling the water temperature accuracy in the brewing stage to ensure that the temperature difference is controlled within ± 1 °C.

3. Long-term stability guarantee
Coffee machines are high-frequency use equipment, and NTC sensors need to have excellent thermal shock resistance, moisture resistance and low drift characteristics. It is recommended to choose industrial-grade products that have passed the aging test to ensure that long-term operation does not affect the temperature control performance.

Recommended solution: high thermal conductivity, waterproof and fast response NTC sensor
The NTC temperature sensor products provided by Minsing, which are specially designed and optimized for coffee machines, have the following advantages:

High thermal conductivity packaging: improve temperature measurement response speed
IP grade waterproof design: suitable for humid and high temperature environment
Fast response performance: 0.3 second-level response, capturing small temperature differences
Support customization: can match resistance value, package size, installation method according to customer needs
Not only precise temperature control, more intelligent functions to be discovered

In addition to being used for main control temperature management, the NTC temperature sensor can also undertake the following functions in the coffee machine system: fault monitoring and overtemperature protection, multi-stage heating curve control, energy efficiency optimization and energy saving and consumption reduction, intelligent linkage with other modules (such as water pump/steam valve).

The key to a good cup of coffee lies in the fine control of water temperature. As an indispensable "temperature sensing center" in a coffee machine, the NTC temperature sensor not only ensures the accuracy of each brewing, but also provides a solid guarantee for the safe and stable operation of the equipment. Minsing will continue to focus on the research and development of high-performance sensors to provide coffee machine manufacturers with smarter and more reliable temperature control solutions.