Winsen MH-T4041A Low Power Consumption Infrared Gas Sensor User Manual
- June 1, 2024
- Winsen
Table of Contents
Low Power Consumption
Infrared Gas Sensor
MH-T4041A Low Power Consumption Infrared Gas Sensor
(Model：MH-T4041A)
User’s Manual
Version ：1.0
Issue Date：2023-07-19
Zhengzhou Winsen Electronic Technology Co., Ltd
Statement
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Co., LTD. Without the written permission, any part of this manual shall not be
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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 prevail.
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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 optimized using way are welcomed.
Please keep the manual properly, in order to get help if you have questions
during the usage in the future.
Description
MH-T4041A low-power infrared gas sensor is a general-purpose intelligent infrared gas sensor (hereinafter referred to as the sensor), using non- dispersive infrared (NDIR) principle to detect hydrocarbon combustible gases in the air. It has good selectivity, ultra-low power consumption, no oxygen dependence, stable performance, long life, and built-in temperature compensation.The sensor is a compact and high performance sensor which combines the mature infrared absorption gas detection technology with micro- machining and excellent circuit design. It is easy to use, can directly replace catalytic combustion elements, so it is widely used in various occasions where combustible and explosive gases exist.
Feather
- High sensitivity, high resolution, fast response time, ultra-low power consumption
- Provides a variety of output modes, such as UART and analog voltage
- Temperature compensation, excellent linear output, excellent stability, long service life
- Anti-water vapor interference, no poisoning, can directly replace the catalytic combustion principle sensor
Main Application
- HVAC Refrigeration and Indoor Air Quality monitoring
- Industrial Process and safety protection monitoring
- Agricultural and animal husbandry production process monitoring
Technical Parameter
sheet 1
| Model No. | MH-T4041A |
|---|---|
| Detection Gas | Hydrocarbon flammable gases |
| Working voltage | 3.3V～5.5V DC(powered by the safety grid) |
| Average Current | ＜0.8mA |
| Deteciton Range | 0～10% Vol optional(refer to sheet 2) |
| Interface level | 3V |
| Output signal | UART |
0.4V～2V（No low energy consumption request optional）
Preheat Time| 10s
Reponse Time| T90＜15s
Working Temperature| -20℃ ～60 ℃
Working Humidity| 0～95%RH(non-condensing)
Dimension| Φ20mm×21.7mm
Weight| 8g
Life time| ＞5 years
Protection Level| IP54
Power end, communication end Intrinsicsafety parameter|
Ui=7.5VDC，Ii=265mA，Pi=0.5W，Ci=10μF，Li=0mH
Common range
and accuracy (other range and detection gas can be customized)
Sheet2
Gas| Molecular formula| Range| Resoluti on| Decimal place| Accuracy| Note
Methane| CH4| 0～5.00% Vol| 0.01% Vol| 2 decimal| 0～50%FS(±3%FS)
50%～100%FS(±5%FS)| Temperature Compensation
0～10.00% Vol| 2 decimal
Propane| C3H8| 0～100% LEL| 1% LEL| None
Isobutane| C4H10| 0～100% LEL| 1% LEL| None
Product size drawing (size tolerance ±0.2 mm)
Pin definition
Sheet 3
| Shee t NO. | Definition |
|---|---|
| Pin 2 | V+ input voltage |
| Pin 1 | GND |
| Pin 4 | Vout (0.4V～2V optional) |
| Pin 3 | UART(RXD) 0V～3V data input |
| Pin 5 | UART(TXD) 0V～3V data output |
Output Mode
Serial port output (analog voltage output is optional)
Vout output voltage range (0.4V ~ 2V), corresponding to gas concentration (0 ~
full scale).
Connect the sensor Vin to 5V, GND to the power supply, and Vout to the ADC
input. After the preheating time, the sensor outputs a voltage value from the
Vout terminal that characterizes the gas concentration.
Safety and explosion proof
The product complies with GB3836.1-2010 “Explosive environment Part 1: General
requirements for equipment” and GB3836.4-2010 “Explosive Environment Part 4:
Equipment protected by intrinsically safe” i “standards; The explosion-proof
mark is ExibⅡB T4 Gb, which is suitable for zone 1 and Zone 2, containing
class IIA, class T1 ~ T3 flammable gas, vapor and air mixing explosive
environment;It has passed the inspection by the National Explosionproof
Electrical Product Quality Inspection Center and obtained the explosion-proof
certificate.When in use, please pay attention to the following items:
- The intrinsic safety power supply must be used to power the sensor, otherwise the explosion-proof performance will be affected.
- Do not replace the sensor in a dangerous place.
- Do not disassemble or replace sensor components to avoid affecting explosion-proof performance.
- It is not allowed to replace components or structures, so as not to affect explosion-proof performance.
- The installation and wiring of the safety gate shall be carried out in accordance with the safety gate instruction manual, and the safety gate shall obtain the explosion-proof certificate。
Connection diagram of intrinsically safe explosion-proof system
The on-site installation must comply with the relevant regulations of the
GB3836.15—2000 “Electrical Equipment for Explosive Gas Environment Part 15:
Electrical Installation in Hazardous Locations (Except Coal and
Mines).
The distribution
parameters of the connecting cable between the safety barrier and the sensor
should meet: Cc≤Co-Ci Lc≤Lo-Li Ui≥Uo Ii≥Io Pi≥Po
Note:
Uo: Maximum output voltage of safety barrier.
Io: Maximum output current of safety barrier
Po: Maximum output power of safety barrier
Co: Maximum external capacitance of safety barrier
Lo: the maximum external inductance of the safety barrier (see the safety
barrier instructions for the above parameters book)
Cc: Maximum allowable distributed capacitance of connecting cable
Ui: sensor maximum input voltage
Ii: Maximum sensor input current
Pi: sensor maximum input power
Ci: Maximum internal capacitance of the sensor
Li: Maximum internal inductance of the sensor
Lc: Maximum allowable distributed inductance of connecting cable.
Cautions for Maintenance
- The sensor should be calibrated regularly, the recommended calibration period is 6 months.
- Do not use the sensor in a high dust density environment for a long time.
- The sensor should be kept away from heat sources and avoid direct sunlight or other thermal radiation.
- Please use sensors in the sensor power supply scope.
- Do not cut or weld the sensor pins
Zhengzhou Winsen Electronics Technology Co., Ltd
Add: No.299, Jinsuo Road, National Hi-Tech Zone,
Zhengzhou 450001 China
Tel: +86-371-67169097/67169670
Fax: +86-371-60932988
E-mail: sales@winsensor.com
Website: www.winsen-sensor.com Leading gas
sensing solutions supplier in China!