MGS Series Controller Manual
22 6709-9000 Rev 1
POTs Used to Set Alarm Limits
Max #
Input
Chans
Number of
Alarms
Alarm Type P3 P7 P8
2
1 High x
2
Low x
High x
6
1 High x
2
Low x
High x
The alarm range is set over the voltage range of 0.4 V to 2.0 V. A voltage
of 0.4 V equals 0 ppm and 2.0 V equals full scale such as 1000 ppm.
Calculation Example:
Desired Alarm Set Point = 500 ppm. Full scale range = 1000 ppm.
V = 0.4v +
Alarm Voltage Range
Full Scale PPM Range
× Desired Alarm SP
V = 0.4v +
2.0v 0.4 v
1000 ppm
× 500 ppm
V = 1.2 V (for a 500 ppm alarm level)