4
expressions of λ and carbon monoxide (CO) emendation value (COcor) whose function is
to show that auto exhaust pipe has leakage if difference between COcor and CO test
value is significant. At the moment, COcor represents actual CO value, namely the value
when exhaust pipe has not leakage.
V. Operation Instruction
1.Function of operation keys
Fig.1 Sketch map of front panel
Key-S: mainly used for moving cursor (rectangle, dark blue) to choose items needed. It
may also be used for exiting from some operation state (for details, refer to the
explanation on the screen).
Key-E: mainly used for confirming chosen items and executing chosen operation.
Key-▲
、
Key-▼: mainly used for increasing and decreasing of data revision and can also
used in collaboration with Key-S for choosing of items.
2. Preheat of the Instrument
Connect power supply line at back panel and turn on power supply switch and LCD
display screen displays
Warm up
，
waiting……….xxx S.
Now the Instrument enters into
the state of 10-minute warm-up. Countdown mode is adopted for warm-up timing. At the
last 30 sec. of countdown, the instrument opens air pump and reversing valve
automatically, entering 30-sec. automatic zeroing (there is relevant prompt on the screen
