4-34 
After calibration, the 
alarm of “Flowmeter 
Cal. Data Error 01” 
occurs. 
1. The calibration data of some gas is 
blank. It is possible that complete 
calibration procedures are not followed 
for the gas. 
2. The tube configuration of electronic 
flowmeter is changed improperly. 
1. Calibrate again. 
2. Set tube configuration 
again. If the alarm still exists 
after setting, calibrate again. 
After calibration, the 
alarm of “Flowmeter 
Cal. Data Error 02” 
occurs. 
1. The A/D value of gas calibration data 
crosses the range. 
2. The A/D value of gas calibration data 
does not increase with the increase of 
flow. 
Calibrate again. 
 
4.3.5 Pressure and Flow Zeroing (factory) 
 
During the operation of the anesthesia machine, pressure and flow are zeroed automatically at 
a specific interval. You can also zero pressure and flow manually in the factory maintenance 
menu. Manual zeroing can eliminate the measurement deviations caused by zero offset 
immediately. This system provides the function of pressure and flow automatic zeroing at a 
specific interval. 
 
4.3.5.1 Zeroing Procedures 
1. Select the [Maintenance] shortcut key → [Factory Maintenance >>] → enter the 
required password → [Factory Cal. >>] → [Paw and Flow Zero Cal. >>]. The 
message [Zeroing] is prompted. 
2.  If pressure and flow zeroing is passed, the message [Zeroing Completed!] is displayed. 
If pressure and flow zeroing is failed, the message [Zeroing Failure! Please try again.] 
is displayed. 
 
NOTE 
z  In case of zeroing failure, other faults may exist. You must isolate and eliminate the 
problem.