1. Equipment Purpose
The dry-burn prevention tester is a specialized device used to verify the safety and reliability of dry-burn protection functions in various household and commercial heating appliances. Dry burn prevention is a crucial safety protection mechanism in modern electrical appliances. Its core function is to detect this danger in time when equipment is in a dry-burning state due to unexpected conditions (such as forgetting to add water, water evaporation, or insufficient water level), and immediately cutting off the power to the heating element, thereby effectively preventing serious safety accidents such as fires and equipment damage caused by high-temperature air burning 。 This equipment is suitable for validating the dry-burn protection function of various hot water and heating appliances such as gas rapid water heaters, electric water heaters, electric kettles, gas stoves, rice cookers, electric steamers, and coffee machines. It can conduct comprehensive safety assessments during R&D, production, and quality inspection stages to ensure products comply with national mandatory safety standards.
2. Core Testing Items
The dry-burn prevention tester can comprehensively evaluate the dry-burn protection functions of various heating equipment, mainly including the following inspection items:
| Testing items | Inspection content and key parameters |
|---|
| Accuracy of dry burn triggers | Verify whether the equipment can reliably trigger the anti-dry burn protection action under conditions of water shortage or no water |
| Protect action response time | The time from reaching a hazardous state to the complete shutdown of the heating power supply is usually controlled within 30~60 seconds |
| Temperature threshold accuracy | Verify the consistency between the anti-dry burn trigger point and the nominal protection temperature; deviations generally should not exceed 5°C |
| Complete power cutoff | Check whether the heating element is completely powered off after the dry-burn prevention function is triggered |
| Reset function | After troubleshooting (such as refilling water), verify whether the equipment can reset normally and resume normal operation |
| Durability and repeatability | Multiple repeated trigger tests (e.g., 100 times) on the dry-burn prevention function are conducted to assess the reliability of core components under long-term use |
| Sensor accuracy | Detecting the working accuracy and sensitivity of temperature sensors or water level sensors |
| Adaptability to abnormal working conditions | Simulates the effectiveness of protection functions under abnormal conditions such as voltage fluctuations and extreme changes in ambient temperature |
Additionally, for gas water heater products, dry-burn prevention testing is a mandatory inspection item specified in GB 6932, covering the activation performance verification of overheating (dry-burn protection) safety devices.
Structural performance requirements
1. Equipped with a constant temperature setting function, setting the required temperature for testing, so that the garment surface contacts the anti-king burn device for testing.
2) The heating element uses DC power supply with a safe voltage, which will not cause injury to people
3) The thermometer uses a high-precision PT100 thermostat, and the probe is the Pr100 temperature probe imported from Herais Germany, offering high accuracy and good stability.
4) Equipped with a test probe stand.
5) Power supply voltage: AC220V 10%, 50Hz
6) Intelligent PID control function for temperature gauges.
7) Equipped with leakage protection features.
Frequently Asked Questions
What industries is your company's testing equipment mainly suitable for?
We specialize in non-standard testing equipment for gas appliances and household appliances, especially in the gas appliance industry, with nearly thirty years of technical accumulation in the gas appliance industry, including gas water heaters, wall-hung boilers, and gas stoves. At the same time, the equipment is widely used in kitchen appliances such as range hoods, electric ovens, and sterilizers, as well as in environmental reliability testing fields like salt spray tests and high and low temperature tests. In addition, industrial automation inspection solutions can be customized according to customer requirements.
Do you make standard equipment or non-standard customization?
Focusing mainly on non-standard customs. Each production line and every product category has unique testing requirements. We provide a full range of customized services from solution design, mechanical manufacturing, electrical control, to software integration based on your inspection targets (such as valve bodies, complete machines), inspection items (performance, aging, lifespan), production line cycles, and environmental conditions. There are already numerous successful non-standard cases in the gas appliance and home appliance industries for reference.
How is the precision and stability of the equipment? How to verify it?
Before leaving the factory, we conduct complete machine testing and precision calibration according to national or industry specifications, and can provide actual measurement data reports. Common verification methods include: repeated testing with standard samples, comparison with customers' existing qualified equipment, or testing by third-party metrology agencies. For key parameters such as gas flow, pressure, and temperature, we also provide calibration recommendations and cycle reminders. For projects requiring extremely high precision, free sample testing can be arranged.
How long does it take to customize a device? Will it affect my production?
The project duration depends on the complexity of the equipment, generally 4~8 weeks, and includes requirements confirmation, solution design, manufacturing, factory pre-commissioning, and on-site installation. We complete pre-assembly and functional testing of the entire machine in the factory, and only a short time of wiring and fine-tuning can be done on site for trial operation. We will communicate with you in advance about the production shutdown window and develop a detailed installation schedule to minimize the impact on production.
Is the equipment complex to operate? What training do you offer?
The equipment uses a touchscreen human-machine interface, with simple operation logic; ordinary workers can use it daily after half a day of training. We offer tiered training: operator training (power on/off, data retrieval, fixture change), technician training (parameter adjustment, simple fault handling), and engineer training (system configuration, deep maintenance). It also provides a library of operation videos and illustrated manuals for easy access at any time.
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