ZH8871 Thermocouple Performance Curve Tester

1. Overview:

Thermocouple characteristic curve tester complies with the technical requirements specified in CJ 30-1999 "Flame-out protection device for thermoelectric fuel appliances", "Household gas stoves (GB16410-1996)" and "General test methods for household gas appliances (GB16411-1996)". It is suitable for the quality inspection department of the production enterprise to conduct performance testing and random inspection of products. The action mechanism of the test bench adopts pneumatic devices, and the straight-moving cylinder realizes the whole process of the thermocouple working in the flame of the set temperature and leaving the flame. The test circuit adopts a microcomputer data acquisition system, and the flexible human-machine interface software adjustment function greatly facilitates the user's operation.

2. Technical parameters:

2.1. Designed workstations: 1 to 5

2.2. Heating range: 500℃ to 800℃ (adjustable)

2.3. Heating method: liquefied gas combustion flame heating

2.4. Temperature control accuracy: ±10℃ (under reference conditions)

2.5. Control method: microcomputer control

2.6. Thermoelectric potential measurement range: 0 to 50Mv

2.7. Measurement accuracy: 0.1mV

2.8. Cold and hot characteristic working time: 0 to 9999s (adjustable)

2.9. Time measurement resolution: 0.1s

III. Functional configuration:

3.1. Test parameters: heating temperature, thermoelectric potential, detection time;

3.2. All test parameters are transmitted to the display screen through the data acquisition module, and the management software is used to realize the human-machine interface operation. The operator can realize the collection and monitoring of the detection data by clicking the menu at this level;

3.3. The management software has the following functions:

(1) Real-time display and recording of heating temperature, thermocouple voltage, and detection time;

(2) Automatically generate a curve chart of the change of heating temperature and thermocouple voltage with detection time;

(3) Automatically generate a table of thermoelectric potential, time, and temperature data;

(4) Thermoelectric potential of each point on the curve: users can set the time point according to requirements to query and display the corresponding data;

(5) Test data can be stored according to requirements and will not be lost in case of power failure.

3.4. The test bench has a corresponding external data output port. When necessary, the user can extract the pre-stored or measured data curve by printing and other means;

3.5. The clamp action mechanism adopts pneumatic actuators to achieve contact between the 3-5mm part of the thermocouple head and the flame when testing the thermal characteristics; when testing the cold characteristics, the thermocouple is separated from the flame and cooled naturally;

3.6. It has the safety protection function of automatically shutting off the gas source in case of accidental flameout;

3.7. It can be adjusted forward and backward relative to the heating position according to the installation size of the thermocouple;