Winsen MC107 Catalytic Flammable Gas Sensor User Manual
- June 15, 2024
- Winsen
Table of Contents
Winsen MC107 Catalytic Flammable Gas Sensor User
Product Information
Specifications
Model| Sensor Type| Standard Encapsulation| Working voltage(V)| Working
current(mA)| Sensitivity (mV)| 1% CH4 Linearity| Measuring range(%LEL)|
Response Time (90%)| Recovery Time (90%)| Operation Environment| Storage
Environment| Lifespan
---|---|---|---|---|---|---|---|---|---|---|---|---
MC107| Catalytic Type| Metal cap & Plastic base| 1545| 5% – 100%| 10s| 30s|
-10°C to +55°C
Product Usage Instructions
Profile
The MC107 Catalytic Flammable Gas Sensor utilizes the catalytic combustion principle. It consists of two arms of an electric bridge, which includes a test element and a compensate element. When the test element comes into contact with combustible gases, its resistance increases. Simultaneously, the output voltage of the bridge changes, and the voltage variation is directly proportional to the gas concentration. The compensate element serves to compensate for temperature and humidity.
Features
- Bridge output voltage in linear
- Fast response
- Good repeatability and selectivity
- Stable and reliable
- Resists H2S poisoning & organosilicon
Main Applications
The MC107 Catalytic Flammable Gas Sensor is primarily used in household environments to detect combustible gas leaks or concentrations, such as natural gas, liquefied gas, coal gas, etc.
Product FAQ
-
1. How does the MC107 Catalytic Flammable Gas Sensor work?
The sensor operates on the catalytic combustion principle. When combustible gases come into contact with the test element, its resistance increases, leading to a change in the output voltage of the bridge. The voltage variation is directly proportional to the gas concentration. -
2. What are the main features of the MC107 Catalytic Flammable Gas Sensor?
The main features of the sensor include linear bridge output voltage, fast response time, good repeatability and selectivity, and stable and reliable performance. It also resists H2S poisoning and organosilicon. -
3. What are the main applications of the MC107 Catalytic Flammable Gas Sensor?
The sensor is primarily used in household environments to detect combustible gas leaks or concentrations, such as natural gas, liquefied gas, coal gas, and more.
Statement
This manual copyright belongs to Zhengzhou Winsen Electronics Technology Co., LTD. Without the written permission, any part of this manual shall not be copied, translated, stored in database or retrieval system, also can’t spread through electronic, copying, record ways. Thanks for purchasing our product. In order to let customers use it better and reduce the faults caused by misuse, please read the manual carefully and operate it correctly in accordance with the instructions. If users disobey the terms or remove, disassemble, change the components inside of the sensor, we shall not be responsible for the loss. The specific such as color, appearance, sizes …etc .., please in kind We are devoting ourselves to products development and technical innovation, so we re serve the right to improve the products without notice. Please confirm it is the valid version before using this manual. At the same time, users’ comments on optimized using way are welcome. Please keep the manual properly, in order to get help if you have questions during the usage in the future. Zhengzhou Winsen Electronics Technology CO., LTD
MC107 Catalytic Flammable Gas Sensor
Profile
MC107 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.
Features
- Bridge output voltage in linear
- Fast response
- Good repeatability and selectivity
- Stable and reliable
- Resist H2S poisoning & organosilicone.
Fig1. Sensor Structure
Main Applications
It is used for household occasions to detect combustible gases leakage alarm
or concentration such as natural gas, liquefied gas, coal gas and so on.
Fig2. Basic Test Circuit
Parameter
| Model | MC107 |
|---|---|
| Sensor Type | Catalytic Type |
| Standard Encapsulation | Metal cap &Plastic base |
| Working voltage(V) | 2.5±0.1 |
| Working current(mA) | 150±10 |
| Sensitivity (mV) | **** 1% CH4 |
| Linearity | ≤5% |
| Measuring range(%LEL) | 0～100 |
| Response Time (90%) | ≤10s |
| Recovery Time (90%) | ≤30s |
| Operation Environment | -10～+55℃ <95%RH |
| Storage Environment | -25～+70℃ <95%RH |
| Lifespan | 5 years |
Fig1. Sensor Structure
Sensitivity and Response Feature
Changing of output signal at different temperature
Changing of output signal at different humidity
Changing of output signal with different voltage supplying
Long-term Stability
The drift in air per year is within ±2mV, in 1%CH4 is within ±2mV. For a short
period storage (in 2 weeks), the sensor need burn-in continuously for 8 hours
to reach stability. For more than one year storage, it need more than 48
hours.
Cautions
Following conditions must be prohibited
-
Exposed to organic silicon steam
Sensing material will lose sensitivity and never recover if the sensor absorbs organic silicon steam. Sensors must avoid exposing to silicon bond, fixature, silicon latex, putty or plastic contain silicon environment. -
High Corrosive gas
If the sensors are exposed to high concentration corrosive gas (such as H 2 S, SO X , Cl 2 , HCl etc.), it will not only result in corrosion of sensors structure, also it cause sincere sensitivity attenuation. Alkali, -
Alkali metals salt, halogen pollution
The sensors performance will be changed badly if sensors be sprayed polluted by alkali metals salt especially brine, or be exposed to halogen such as fluorine. -
Touch water
Sensitivity of the sensors will be reduced when spattered or dipped in water. -
Freezing
Do avoid icing on sensor’s surface, otherwise sensing material will be broken and lost sensitivity. -
Applied higher voltage
Applied voltage on sensor should not be higher than stipulated value, even if the sensor is not physically damaged or broken, it causes down line or heater damaged, and bring on sensors’ sensitivity characteristic changed badly. -
Pins connection
When the sens or is connecting to the circuit, one of detection part pins and one of compensation part pins connects as the signal output. The other pin of detection part connects negative electrode, while the other pin of compensation part connects positive electrode. The part with D mark on the sensor bottom is the detection one the other part with C mark is the compensation one.
Following conditions must be avoided
-
Water Condensation
Indoor conditions, slight water condensation will influence sensors’ performance lightly. However, if water condensation on sensors surface and keep a certain period, sensors’ sensitive will be decreased. -
Used in high gas concentration
No matter the sensor is electrified or not, if it is placed in high gas concentration for long time, sensors characteristic will be affected. If lighter gas sprays the sensor, it will cause extremely damage. -
Long time storage
The sensors resistance will drift reversibly if it’s stored for long time without electrify, this drift is related with storage conditions. Sensors should be stored in airproof bag without volatile silicon compound. For the sensors with long time storage but no electrify, they need long galvanical aging time for stability before using. The suggested aging time is 24 hours at least if the storage time is more than half an year. -
Long time exposed to adverse environment
No matter the sensors electrified or not, if exposed to adverse environment for long time, such as high humidity, high temperature, or high pollution etc., it will influence the sensors’ performance badly. -
Vibration
Continual vibration will result in sensors down lead response then break. In transportation or assembling line, pneumatic screwdriver/ultrasonic welding machine can lead this vibration. -
Concussion
If sensors meet strong concussion, it may lead its lead wire disconnected.
Usage Conditions
For sensor, handmade welding is optimal way. The welding conditions as
follow
- Soldering flux : Rosin soldering flux contains least chlorine
- Homothermal soldering iron
- Temperature <3 50
- Ti me less than 5 seconds
If disobey the above using terms, sensors sensitivity will be reduced.
References
- Winsen Gas Sensor_CO2 Sensor_Air Quality Sensor_Dust Sensor_CO Sensor-Winsen Electronics
- Winsen Gas Sensor_CO2 Sensor_Air Quality Sensor_Dust Sensor_CO Sensor-Winsen Electronics
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