Hydran* M2-X Instruction ManualPage 110 MA-029 Rev. 1.0, 30-Jul-186.2.3 Detection of Alarm ConditionsEach gas and moisture alarm source has the same set of five parameters:• Two set points: Alarm Hi SP and Alarm Hi-Hi SP• One delay: Alarm Delay• Two relay assignations: Alarm Hi Relay and Alarm Hi-Hi RelayNote: The parameters pertaining to gas alarm conditions are grouped in Alarms >Alarms Setup > Gas Alarm Setup (see Section 3.3.2.1). Those for moisture alarmconditions are grouped in Alarms > Alarms Setup > H2O Alarm Setup (see Section3.3.2.2).A gas or moisture alarm condition is detected when a source exceeds one of itstwo set points for a period of time exceeding its delay. Upon detection, the relayassigned to this alarm condition is activated (energized) and a message appears onthe display (see Section 3.1.2.1).Note: The above explanation is true if this relay is set to the Normal or Latch mode.For more information, see Section 6.5.6.2.4 Setting the High Alarm ConditionBefore setting the gas or moisture level High alarm condition, the gas andmoisture level readings should be monitored over a minimum period of two weeks.A simple method to monitor this value is to consult the Hydran M2-X’s history filesusing its keypad (see Section 3.4.2).Follow these rules:• Adjust the High set point above the highest reading that was obtained.• Adjust the High set point low enough to detect the earliest sign of anabnormal increase of gas.• But set it at a value high enough to minimize the likelihood of unnecessaryalarms.Table 6-2 below contains suggested guidelines for setting the gas level Highalarm condition, according to the maximum reading obtained during the monitoringperiod.This Chapter contains examples of how to set the gas alarmparameters of the Hydran M2-X. The values used arefictitious and do not correspond to any standard. GeneralElectric does not suggest nor recommend specific alarm setpoints for gases or moisture. It is solely the responsibility ofthe user to determine the appropriate settings.CAUTION