Winsen MC106B Catalytic Flammable Gas Sensor User Manual
- June 15, 2024
- Winsen
Table of Contents
Winsen MC106B Catalytic Flammable Gas Sensor
Statement
This manual copyright belongs to Zhengzhou Winsen Electronics Technology Co.,
LTD. Without written permission, any part of this manual shall not be copied,
translated, or stored in a database or retrieval system, and also can’t be
spread through electronic, copying, or recording ways. Thanks for purchasing
our product. To let customers use it better and reduce the faults caused by
misuse, please read the manual carefully and operate it correctly by the
instructions. If users disobey the terms or remove, disassemble, or change the
components inside of the sensor, we shall not be responsible for the loss.
The specifics such as color, appearance, sizes …etc please in kind We are devoting ourselves to product development and technical innovation, so we reserve 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 the optimized using way are welcome. Please keep the manual properly, to get help if you have questions during the usage in the future.
Product
MC106B adopts the catalytic combustion principle, and its two arms of electric
bridge consist of a test element and a compensating element.
The resistance of the test element rises once it meets the combustible gases, at the same time, the output voltage of the bridge changes and the voltage variation rises in direct proportion to the gas concentration. The compensating element, as a conference, has the function of compensating temperature and humidity.
Features
Bridge output voltage in linear Fast response Good repeatability and selectivity Resist H Spoisoning & organosilicon.
Main Applications
It is widely used in nonindustrial occasions to detect the concentration of
natural gas, LPG, coal gas, and alkanes. It is also used in combustible gas
leakage alarm systems, combustible gas detectors gas concentration meters, and
so on.
Parameters
| Model | MC106B |
|---|---|
| Sensor Type | Catalytic Type |
| Standard Encapsulation | Plastic |
| Working voltage(V) | 2.5±0.1 |
| Working current(mA) | 150±10 |
| Sensitivity (mV) | 1% CH4 |
| 1% C3H8 | 25～65 |
| Linearity | ≤5% |
| Measuring range(%LEL) | 0～100 |
| Response Time (90%) | ≤10s |
| Recovery Time (90%) | ≤30s |
| Working Environment | -40～+70℃ <95%RH |
| Storage Environment | -25～+70℃ <95%RH |
| Lifespan | 5 years |
- Sensitivity and Response Feature
- Changing the output signal at different temperature
- Changing the output signal at different humidity
- Changing the output signal with different voltage supplying
Long term Stability
The drift in the air per year is within ±2mV, and in 1%CH 4 is within ±2mV. For a short period of storage (in 2 weeks), the sensor needs to be galvanized continuously for 8 hours to reach stability. For long-period storage (one year), it needs 48 hours.
Cautions
The 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 exposure to silicon bonds, fixtures,
silicon latex, putty, or plastic-containing silicon environments.
High Corrosive gas
If the sensors are exposed to high-concentration corrosive gas (such as H2 S,
SO X, Cl 2, HCl, etc.), it will not only result in corrosion of the sensor’s
structure, but also it cause sincere sensitivity attenuation.
Alkali, Alkali metals salt, halogen pollution
The sensor’s performance will be changed badly if sensors are sprayed polluted
by alkali metals salt, especially brine, or are exposed to halogen such as
fluorine.
Touch water
The sensitivity of the sensors will be reduced when spattered or dipped in
water.
Freezing
Do avoid icing on the sensor’s surface, otherwise sensing material will be
broken and lose sensitivity.
Applied higher voltage
The applied voltage on the sensor should not be higher than the stipulated value, even if the sensor is not physically damaged or broken, it causes downline or heater damage and causes the sensor’s sensitivity characteristic to change badly.
Pins connection
When the sensor is connected to the circuit, one of the detection part pins
and one of the compensation part pins connect as the signal output. The other
pin of the detection part connects to the negative electrode, while the other
pin of the compensation part connects to the positive electrode. The part with
a D mark on the sensor bottom is the detection one, and the other part with a
C mark is the compensation one.
The following conditions must be avoided
Water Condensation Indoor conditions, slight water condensation will influence
sensors’ performance lightly. However, if water condensation on the sensor
surface keeps for a certain period, the sensor’s sensitivity will be
decreased.
Used in high gas concentration
Whether the sensor is electrified or not, if it is placed in high gas
concentration for a long time, sensor characteristics will be affected. If
lighter gas sprays the sensor, it will cause extreme damage.
Long time storage
The sensor’s resistance will drift reversibly if it’s stored for a long time without electricity, this drift is related to storage conditions. Sensors should be stored in airproof bags without volatile silicon compounds. For the sensors with long-term storage but no electricity, they need long galvanic aging time for stability before use. The suggested aging time is 24 hours at least if the storage time is more than half a year.
Long time exposed to adverse environment
Whether the sensors are electrified or not, if exposed to adverse environments
for a long time, such as high humidity, high temperature, high pollution,
etc., it will influence the sensors’ performance badly.
Vibration
Continual vibration will result in sensors down lead response and then break.
In transportation or assembling lines, a pneumatic screwdriver/ultrasonic
welding machine can lead to this vibration.
Concussion
If sensors meet strong concussion, it may lead its lead wire to disconnect.
Usage Conditions
For sensors, handmade welding is the optimal way. The welding conditions are
as follows:
- Soldering flux: Rosin soldering flux contains the least chlorine
- Homothermal soldering iron
- Temperature 3 50
- Ti me less than 5 seconds
- If disobey the above terms, sensor performance will get worse.
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