29
②
After the zero calibration followed by indicated messages, NGA 6000 is in a
measurement ready state.
CO
HC
%
ppm
CO
2
O
2
%
%
Lambda
AFR
NO
X
Note 1
If the values are indicated as more than CO: 0.05%, HC: 30ppm even after the zero
calibration, press the PURGE key again to clean the inside of NGA 6000 with a
clean air for about 2~3 minutes. And then perform the zero calibration again.
Note 2
Act ivat ed Ch arcoal Filter: It is al so kn ow n a s Z ERO fi lt er.
It eithe r ne utraliz es or combin es the HC i n th e su rroun ding
atmo sphere during the ze ro c alibrat ion adj ustment to p rev ent
dis tortio n of th e a ctual HC measurement during the measurement.
Ple ase exch ange t he filte r in a six-mont h i nte rval but t he life of that
depends on utility frequen cy.