4 in 1 Portable Gas Detector Shield BTYQ-Z4 Series
Structure and Function Comparison Table
The appearance and structure of the equipment are shown in the following diagram:
The device has four buttons, namely left, menu, power, and right.
The device has three indicator lights, namely normal, alarm, and fault indicators.
Leak Detector Structure
The device mainly consists of components such as the casing, circuit board, battery, display screen, and sensors.
Working Principle
Electrochemical type and catalytic combustion type.
|
Types of gases |
Range |
Low alarm point |
High alarm point |
Resolution |
|
EX |
(0~100)%LEL |
20%LEL |
50%LEL |
1%LEL |
|
H2S |
(0~100)PPM |
10PPM |
20PPM |
1PPM |
|
CO |
(0~1000)PPM |
50PPM |
200PPM |
1PPM |
|
O2 |
(0~30)%VOL |
19.5% ABV |
23.5% ABV |
0.1%VOL |
|
For other gas mixtures, please contact the company. |
||||
| Indication error | ±5%FS (combustible), ±0.7%VOL (oxygen) Absolute error ±5umol/mol or relative error ±10% (carbon monoxide) Absolute error ±2umol/mol or relative error ±10% (hydrogen sulfide) |
| Response time | T90≤30S (combustible), T90≤20S (oxygen), T90≤60S (hydrogen sulfide, carbon monoxide) |
| Indication method | LCD displays real-time data and status, LED, voice, and vibration indicate alarms. And battery undervoltage |
| Working environment | Temperature -20℃~50℃; Humidity <95% RH (no condensation) |
| Operating voltage | DC 3.7V (Lithium battery capacity 2700mAh) |
| Explosion-proof Mark | Ex ib IIB T3 Gb |
| Standby time | 10~12 hours under standard conditions |
| Dimensions | 132*69*46(mm) (including back clip) |
| Weight | 0.28kg |
Prevent this device from falling from a height or experiencing severe shocks.
When high concentrations of gas are present, this device may not function properly.
Please strictly follow the instructions for operation and use, otherwise it may result in inaccurate test results or damage to the machine.
This product must not be stored or used in environments containing corrosive gases (such as high concentrations of chlorine gas, etc.), nor should it be used or stored in other harsh environments, including excessively high or low temperatures, high humidity, electromagnetic fields, and strong sunlight.
If there is dirt on the surface of the machine after long-term use, please use a clean soft cloth dipped in water to gently wipe it. Do not use corrosive solvents or hard objects to wipe the surface of the machine, as this may cause scratches or damage.
To ensure the accuracy of the detection, this machine should be calibrated regularly, and the calibration period should not exceed one year.
For any applications or usage issues beyond what is described in this manual, please contact our company for assistance.
Do not disassemble or replace the battery pack, nor charge the battery pack in an explosive gas environment.
In explosive gas environments, non-explosion-proof certified peripheral plug-in devices cannot be used, nor can sensors be replaced.
Storage
The detector should be stored in a ventilated room with an ambient temperature of -10℃ to 55℃ and a relative humidity not exceeding 85%RH. The air should not contain harmful gases or impurities that could corrode the detector.
Accessories and Others
This product comes with one color box, one toolbox, one standard gas hood, one charging cable, one charging head, one instruction manual, one factory test report, one explosion-proof certificate, one certificate of conformity, and one warranty card.
Appendix (Custom instruments can be configured to detect gases listed in the table below)
| Detecting gas | Normal range | Selectable range | Resolution | Low alarm | High alarm |
| Oxygen | 0-30%VOL | 0-30%VOL | 0.1%VOL | 19.5 | 23.5 |
| Methane | 0-4%VOL | 0-4%VOL | 0.01%VOL | 1 | 2.5 |
| Carbon monoxide | 0-1000PPM | 0-2000/5000PPM | 1PPM | 50 | 200 |
| Hydrogen sulfide | 0-100PPM | 0-50/200/1000PPM | 1/0.1PPM | 10 | 20 |
| Flammable gas | 0-100%LEL | 0-100%LEL | 1%LEL | 20 | 50 |
| Ammonia | 0-100PPM | 0-50/500/1000PPM | 1/0.1PPM | 20 | 50 |
| Hydrogen gas | 0-1000PPM | 0-40000PPM | 1/0.1PPM | 200 | 500 |
| Chlorine gas | 0-20PPM | 0-100/150PPM | 1/0.1PPM | 5 | 10 |
| Hydrogen chloride | 0-20PPM | 0-20/150PPM | 1/0.1PPM | 5 | 10 |
| Sulfur dioxide | 0-20PPM | 0-50/100PPM | 1/0.1PPM | 5 | 10 |
| Nitric oxide | 0-250PPM | 0-500/1000PPM | 1/0.1PPM | 20 | 125 |
| Phosphine | 0-20PPM | 0-20PPM | 1PPM | 5 | 10 |
| Hydrogen cyanide | 0-20PPM | 0-20PPM | 1PPM | 10 | 25 |
| Acetylene | 0-100PPM | 0-100PPM | 1PPM | 20 | 50 |
| Ethylene oxide | 0-100PPM | 0-100PPM | 1PPM | 20 | 50 |
| Ozone | 0-100PPM | 0-20/100PPM | 0.1PPM | 20 | 50 |
| Formaldehyde | 0-40PPM | 0-50/100PPM | 1/0.1PPM | 8 | 20 |
| Benzene | 0-1000PPM | 0-1000PPM | 1PPM | 200 | 500 |
| Toluene | 0-1000PPM | 0-1000PPM | 1PPM | 200 | 500 |
| Xylene | 0-1000PPM | 0-1000PPM | 1PPM | 200 | 500 |
| VOC | 0-1000PPM | 0-1000PPM | 1PPM | 200 | 500 |
| Vinyl chloride | 0-250PPM | 0-250PPM | 1PPM | 50 | 125 |
| Methanol. | 0-30PPM | 0-30PPM | 1PPM | 6 | 15 |
| Isobutene | 0-90PPM | 0-90PPM | 1PPM | 18 | 45 |
| Ethanol | 0-80PPM | 0-80PPM | 1PPM | 16 | 40 |
Note: The detection range of customized instruments is subject to the actual instruments delivered. For gases not listed, please contact the manufacturer.




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