H – H mode (1st level: Upper limit, 2nd level: Upper limit)
Full Scale
0ppm
2nd level gas alarm : ALARM 1 , ALARM 2 is displayed. Alarm contacts ZA1 and ZA2 are activated
Alarm value is set by entering A2 **
1st level gas alarm : ALARM 1 is displayed. Alarm contact ZA1 is activated
Alarm value is set by entering A1 **
Normal state (No gas is detected)
L – L mode (1st level: Lower limit, 2nd level: Lower limit)
25vol%
21vol%
0 vol%
Normal state
1st level alarm : ALARM 1 is displayed. Alarm contact ZA1 is activated.
Alarm value is set by entering A2 **
2nd level alarm : ALARM 1 , ALARM 2 is displayed. Alarm contact ZA1 and ZA2 are activated.
Alarm value is set by entering A1 **
H – L mode (Upper limit, Lower limit)
50vol%
21vol%
0 vol%
Upper alarm : ALARM 2 is displayed. Alarm contact ZA2 is activated. Alarm value is set by entering A2 **
Normal state
Lower alarm : ALARM 1 is displayed. Alarm contact ZA1 is activated. Alarm value is set by entering A1 **
