| Model No |
Input |
Alarm type |
Applications |
| AT-740-ALM-PT RTD Limit alarm |
Temperature |
1 setpoint/2 setpoint (HL)/2 setpoint (HH)/2 setpoint (LL) |
High or low alarm for RTD temperature sensor |
| AT-740-ALM-J/ K/ E/ T/ R Thermocouple limit alarm |
Temperature |
1 setpoint/2 setpoint (HL)/2 setpoint (HH)/2 setpoint (LL) |
High or low alarm for thermocouple sensor |
| AT-740-ALM-F Frequency limit alarm |
Voltage pulse Open collector |
1 setpoint/2 setpoint (HL)/2 setpoint (HH)/2 setpoint (LL) |
high or low alarm for speed or flow signals |
| AT-740-ALM-AC/ AE AC Limit alarm |
AC voltage/ current input |
1 setpoint/2 setpoint (HL)/2 setpoint (HH)/2 setpoint (LL) |
High or low alarm for AC voltage or current |
| AT-740-ALM DC limit alarm |
DC voltage/ current input |
1 setpoint/2 setpoint (HL)/2 setpoint (HH)/2 setpoint (LL) |
High or low alarm for varies DC inputs |
