Grasp the key points and use the compound multi-gas detector reasonably.
The compound multi-gas detector is widely used in production workshops, warehouses, pipeline construction, tunnel underground mine construction and other places, and many customers have also purchased the compound multi-gas detector.
A, the use of composite multi-gas detector:
1, open the instrument
When the power is off and the battery is fully charged, press ""
Press the "1" key for about 2 seconds to turn off the instrument in the measuring state.
2. The power is insufficient
When the battery power of the instrument is lower than the preset value, an audible under-voltage alarm will be triggered, prompting the operator that the battery power is insufficient and needs to be charged. In case of undervoltage alarm, the battery symbol flashes together with the audible alarm. When the power is exhausted, the instrument will automatically shut down.
When an under-voltage alarm occurs, the operator should turn off the instrument and charge it for about 3-4 hours.
Second, the composite multi-gas detector performs preheating self-inspection:
After pressing the "1" key to start the machine, there will be a self-check process for the instrument's own electric quantity, sensor and acousto-optic vibration alarm function, and it will enter the 100-second countdown preheating, and then directly enter the measurement status interface after preheating.
Note: If the self-inspection fails, it should be re-inspected. If it fails again, please contact us or the local agent/service provider.
Three, the measurement mode of composite multi-gas detector:
Using free diffusion detection method, the instrument can be fixed on the belt or used by hand during normal operation. Once turned on, the instrument will continuously measure, and the surrounding air can enter the sensor through diffusion. Usually, the air flow can directly send the measurement target gas to the sensor, and the sensor will respond to the gas concentration and give the measurement result. The principle of diffusion detection is to directly detect the gas concentration around the instrument by using the above methods. The advantage of diffusion detection is that the response time is fast. If it is necessary to remotely detect the gas at the sampling position, it needs to be measured by inhalation. At this time, the instrument needs to use a calibration hood and an optional air pump. When using the calibration hood, it should be ensured that the gas sampling direction is in the direction indicated by the arrow.
