Hanwei BS03, Operation Manual, Page: 12 / 20

BS03 fixed gas detector operation manual
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Display in different status:
1)
Normal status: Display the detecting result of the gas concentration
2) Sensor fault status: Screen display “E-02”; yellow LED is on.
3) High concentration protection status(only available for LEL type):
Screen display “100”, 3 LED lights are all on, electrical current output
21.3mA.
4) Low alarm status: red L-ALARM LED light is on
5) High alarm: red L-ALARM LED light and red H-ALARM LED lights
are on.
6) Low alarm setting: “F--1”
7) High alarm setting: “F--2”
8) Zero calibration: “F--3”
9) Single point calibration: “F--4”
10) Factory setting: “F--5”(Unavailable to the customers).
6.1 Low alarm setting
In normal status, press “Setup” once and it displays “F-1”. Press
“Confirm”, it displays the default low alarm. This figure can be adjusted by
pressing “+” or “-”. After setting completed, press “Confirm” to save the
setting. The setting will be effective immediately after exit. The screen will
display “F-1”. You can press “setup” to make the other settings or press
“Cancel” to exit to return to the normal status.
6.2 High alarm setting
In normal status, press “Setup” twice and it displays “F-2”. Then press
“Confirm”, it displays the default high alarm. This figure can be adjusted by
pressing “+” or “-”. After setting completed, press “Confirm” to save the
setting. The setting will be effective immediately after exit. Then the screen
will display “F-2”. User can press “setup” to make the other settings or press
“Cancel” to return to the normal status.
6.3 Zero translation
After the detector have been used for a long time, or the detector was
put in a new type environment, it may not display “0” in clean air, this
phenomenon is called “zero drift”, zero drift is normally caused by big
change of temperature or humidity, and this phenomenon can be corrected
by zero translation.
Zero translation can do simple correction for gas detector, but
comparing with calibration, it cannot correct the sensitivity deviation after
long time use. So in principle, please do zero translation for correction only
when calibration is not convenient to do, and proceed zero calibration every
half year even zero translation have been made.
Zero translation method: after the detector works more than 20 minutes,