Extech Instruments TB400 - Page 6

TB400-en-GB_V1.3 8/16
6
CalibrationClearProcedure
1. Thecalibrationclearprocedurewillclearallcalibrationvaluesandreturnthemeterto
defaultsettings.
2. PowerONthemeterwiththecoverclosedbutnotestingbottleinthechamber.
3. Pressthe"CAL"buttoncontinuouslyuntiltheLCDdisplays"CAL"




4. Waitonesecond;theLCD
willthendisplay:




5. Momentarilypressthe"HOLD"button.TheLCDwilldisplay:




6. Momentarilypressthe"HOLD"buttonagain.TheLCDwilldisplay:





7. MomentarilyPressthe"CAL"button.TheLCDwillflash"CAL"for10seconds:





8. Thecalibrationdatacleariscomplete.Themeter
willreturntonormaloperatingmode.



CAL
ntu
0.00
CAL ntu
CLr
CAL ntu
CAL
CLr
100
CAL ntu
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