ShenZhen Korno Import&Export Co.,Ltd
-15-
6.2.5 Target Calibration
(Do Not Calibrate Unless You
Are Professional)
GT-903 series gas detector provide 6 levels target gas concentration
calibration,as shown in figure 27-28,this calibration should be operate
under conditions of certain standard concentration gas, Pressure reduction
valve ,Flow meter, Calibration cover and make sure all instruments are well
connected, otherwise this function is forbidden.
Procedures: Connect all instruments as shown in figure 29,enter target
gas calibration interface,release standard gas slowly and control gas flow
within 500ml/min,observe the real-time concentration value(concentration
value should be increasing),wait until real-time concentration value rise to
the peak reading and stay still, user can chose a un-calibrate option to
operate(√ indicate this level has been calibrated and × indicate this level
still need to be calibrate);first of all input a concentration value of standard
gas then calibrate. Target gas concentration value will set up to be the
standard gas concentration value after calibration.
