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BH-4M

Portable Multi-gas Detector

User Manual

Bosean Electronic Technology Co.,Ltd

ISO9001-2015

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Summary of Contents for BH-4M

Page 1: ...BH 4M Portable Multi gas Detector User Manual Bosean Electronic Technology Co Ltd ISO9001 2015...

Page 2: ...sites For the requirements of high reliability of the equipment the shell is made of high precision engineering plastics and non slip rubber with high strength and good hand feeling It can be widely...

Page 3: ...ons to meet users different product applications 2 2 Functions Sound light vibration and display four alarm modes It supports switching between real time gas concentration data display and real time c...

Page 4: ...gas detection Accuracy 5 F S Indication 2 0 inch color display resolution 320 240 Alarm methods Acousto optic vibrating display quadruple alarm TWA STEL alarm Data communication Support USB to connect...

Page 5: ...ture It is mainly composed of shell circuit board battery display screen sensor charger and other components 4 2 Sensor working principle Electrochemical and catalytic combustion 5 Function and operat...

Page 6: ...l etc heat When the preheating is completed enter the main detection interface of the detector Figure 2 Figure 1 Figure 2 5 2 Turn off In the main menu interface of the detector press and hold the mid...

Page 7: ...icon is green when the gas concentration detection is in the low or high alarm state after pressing Mute the icon turns red d Battery level indicator The battery level is divided into six bars When t...

Page 8: ...he alarm lights on both sides of the screen flash synchronously and the vibrator vibrates If the screen is in the off state the screen lights up at the same time When the detector detects that the gas...

Page 9: ...tion is turned on if a new alarm state occurs the buzzer will resume ringing When the gas concentration detected by the detector returns to the lower limit alarm value the gas concentration value colo...

Page 10: ...ace you can view the real time detection curve of a certain gas channel within 10s Click the left or right button to switch the channel display and click the middle button to return to the main interf...

Page 11: ...ce or status bar The start operation of the setting object The finish operation of the setting object Down shift function UP shift function Right shift function Perform calibration settings Occurs whe...

Page 12: ...o each channel Calibration Perform calibration operations such as calibration and zero adjustment on the relevant channel gas System setting Set time language backlight air pump and other system param...

Page 13: ...igure 12 The left side of the figure shows the gas options and the right side shows the alarm settings Follow the instructions in the navigation bar to set the operation There will be a corresponding...

Page 14: ...n period of time After the value is stable click the middle button to confirm and save There will be a corresponding prompt on the screen when the save succeeds or fails Figure 17 Zero drift After the...

Page 15: ...language setting pump setting Figure 19 Time setting Follow the navigation bar prompts to set the system time Figure 19 Backlight setting Set the brightness of the instrument s backlight there are th...

Page 16: ...o low Please charge or the detector cannot be turned on normally due to undervoltage please charge in time when the detector is off connect the charger plug to the charging jack of the detector and th...

Page 17: ...the test site so as to avoid unplugging and plugging the charger Sparks cause fire or explosion 7 Possible fault and corresponding solution Possible fault Possible reason Corresponding solution The d...

Page 18: ...se calibrate or replace the gas sensor Minus gas level displayed Gas sensor drift Calibrate zero point Sensor fault indication Sensor fault Please contact the manufacturer or dealer to replace the gas...

Page 19: ...and hard objects otherwise it may cause scratches or damage to the instrument surface f In order to ensure the detection accuracy of the instrument the instrument should be calibrated regularly and th...

Page 20: ...ean com Tel 86 371 86533226 Email sales bosean com 19 Henan Bosean Electronic Technology Co Ltd No 228 West 4th Ring National High Tech zone Zhengzhou China Tel 86 371 86533226 Fax 86 371 86533226 E m...

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