(parameter Alarm Delay); when an alarm condition is detected, the relay assigned to
this alarm condition (parameters Alarm Hi Relay and Alarm Hi-Hi Relay) is activated.
The parameters in Alarms Setup are also located in Setup > Alarms Setup.
3.3.2.1 Hydran Alarms Setup
• The Hydran Alarm Setup functions give access to the parameters of the gas
alarm conditions:
– Alarm Hi SP: Set point of the gas level High alarm condition.
– Alarm Hi-Hi SP: Set point of the gas level High-High alarm condition.
– Alarm Delay: Alarm delay for both set points.
– Alarm Hi Relay: Relay activated when a gas level High alarm condition is
detected.
– Alarm Hi-Hi Relay: Relay activated when a gas level High-High alarm
condition is detected.
• Hydran Hourly Trend Alarm: Gives access to the hourly trend High and High-
High alarm parameters:
– Alarm Hi SP: Set point of the hourly trend High alarm condition.
– Alarm Hi-Hi SP: Set point of the hourly trend High-High alarm condition.
– Alarm Delay: Alarm delay for both set points. This delay is calculated in
percentage of the hourly trend period; see parameter Hourly Tr. Period in
Setup > Reading Setup > Gas Reading Setup in Section 3.2.8.1.
– Alarm Hi Relay: Relay activated when a gas hourly trend High alarm
condition is detected.
– Alarm Hi-Hi Relay: Relay activated when a gas hourly trend High-High alarm
condition is detected.
• Hydran Daily Trend Alarm: Gives access to the daily trend High and High-High
alarm parameters:
– Alarm Hi SP: Set point of the daily trend High alarm condition.
– Alarm Hi-Hi SP: Set point of the daily trend High-High alarm condition.
– Alarm Delay: Alarm delay for both set points. This delay is calculated in
percentage of the daily trend period; see parameter Daily Tr. Period in Setup
> Reading Setup > Gas Reading Setup in Section 3.2.8.1.
– Alarm Hi Relay: Relay activated when a gas daily trend High alarm condition
is detected.
– Alarm Hi-Hi Relay: Relay activated when a gas daily trend High-High alarm
condition is detected.
• Hydran Sensor Temp Alarm: See Alarms Setup > Temp. Alarm Setup > Sensor
Temp. Alarm in Section 3.3.2.3.
Note: Each alarm of the Hydran M2-X can be assigned to any one of the four relays (1
to 4). More than one alarm can be assigned to a same relay. Appendix I presents the
list of all alarm messages that can appear in the Perception software.
3.3.2.2 Moisture Alarms Setup
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