1. Description

    ZC2529 adopts catalytic combustion principle, and its two arms of electric bridge consists of a test element and a compensate element. The resistance of the test element rises once it meets the combustible gases, in the same time, the output voltage of the bridge changes and the voltage variation rises in direct proportion to the gas concentration. The compensate element, as a conference, has the function of compensating temperature and humidity.

2. Technical specifications

3. Appearance and dimension

4. Basic test circuit

5.Precautions for use

1. Situations that must be avoided

1.1 Exposure to volatile silicon compound vapor

If the surface of the sensor is adsorbed with volatile silicon compound vapor, the sensitive material of the sensor will be wrapped, inhibiting the sensitivity of the sensor and making it irreversible. The sensor should avoid being exposed to places where silicone adhesives, hair spray, silicone rubber, putty or other silicone-containing plastic additives may exist.

1.2 Highly corrosive environment

Sensors exposed to high concentrations of corrosive gases (such as H2S, SOX, Cl2, HCl, etc.) will not only cause corrosion or damage to the sensor leads, but also cause irreversible changes in the performance of sensitive materials.

1.3 Pollution by alkalis, alkali metal salts, and halogens

After the sensor is contaminated by alkali metals, especially salt water spray, if it is exposed to halogens such as Freon, it will also cause performance degradation.

1.4 Contact with water

Splashing or immersion in water will cause the sensitivity to decrease.

1.5 Ice

Freezing of water on the surface of the sensitive element will cause the sensitive material to break and lose its sensitivity.

1.6 Excessive voltage applied

If the voltage applied to the sensor is higher than the specified value, even if the sensor is not physically damaged or destroyed, it will cause lead damage and cause the sensor's sensitivity to decrease.

1.7 Circuit connection

When the sensor is connected to the circuit, one pin of the detection element and the compensation element are connected together as the signal output end, one pin of the detection element is connected to the negative pole, and the other pin of the compensation element is connected to the positive pole; the one marked "D" at the bottom of the sensor socket is the detection element, and the one marked "C" at the bottom of the socket is the compensation element.

2. Situations to be avoided as much as possible

2.1 Condensation

Under indoor conditions, slight condensation will have a slight impact on the performance of the sensor. However, if water condenses on the surface of the sensitive material and remains for a period of time, the sensor characteristics will decrease.

2.2 In high-concentration gas

Regardless of whether the sensor is powered on or not, long-term placement in high-concentration gas will affect the sensor characteristics. For example, if the sensor is directly sprayed with lighter gas, it will cause great damage to the sensor.

2.3 Long-term storage

When the sensor is stored for a long time without power, its sensitive material will undergo reversible changes, which are related to the storage environment.

The sensor should be stored in a sealed bag with clean air and no silica gel. Sensors that have been stored for a long time without power need to be powered on for a longer time before use to stabilize. If the storage time without power exceeds half a year, it is recommended to age it for one day before use.

2.4 Long-term exposure to extreme environments

Regardless of whether the sensor is powered on or not, long-term exposure to extreme conditions such as high humidity, high temperature or high pollution will seriously affect the sensor performance.

2.5 Vibration

Frequent and excessive vibrations can cause the sensor leads to resonate and break. This vibration is generated during transportation and when using pneumatic screwdrivers/ultrasonic welders on the assembly line.

2.6 Shock

If the sensor is subjected to strong shock or falls, its leads may break.

TenSensor, China's first listed gas sensor company,Tensensor can provide more than 100 varieties of six series including：

semiconductor gas sensor

electrochemical gas sensor

infrared gas sensor

dust sensor

pyroelectric sensor

thermopile sensor, etc. 

which can be used for more than 200 kinds of gas and infrared, dust and other indicators detection, widely used in the field of security for  detecting gas leakage, noxious gas leakage, smog and fire, the field of family, office and factory for detecting HCHO, VOC, CO2, PM2.5 and so on. 

Moreover, the solutions for security, household electrical appliances, consumer electronics, smart home, instruments and meters are available.

For more information about ZC2529 sensor, please contact  account manager.

 TEL：0086-0351-5249552

 Whatsapp：+86 18335818384

 Email：[email protected]