GE Hydran 201i Instruction Manual page 66

The following events are recorded:
• An alarm is triggered.
• An alarm is acknowledged by a user.
• An alarm is cancelled (the alarm condition has disappeared).
• A parameter is changed by a user.
• A new Hydran 201 sensor is installed.
• The H201Ti is calibrated.
• A power-up or a power-down occurs.
• The H201Ti is put in service (first power-up).
• The self-test sequence has failed during power-up.
• The microprocessor is reset by the internal watchdog.
Navigation is performed as follows:
• From History;Events, press ENTER to read the date and time of the last event
recorded in the historic data file Events.
• Press UP or DOWN to read the date and time of previous or next events.
• Press ENTER to read a message describing the event that occurred at the
selected date and time.
• Press ENTER and UP or DOWN to read the value of the variables at the time of
this event.
The following ten variables are recorded in the historic data files Events (this list is
identical for the Short Term and Long Term files):
• GasLevel
• HourlyTrend
• HourlyTr Period (period of the hourly trend)
• DailyTrend
• DailyTr Period (period of the daily trend)
• SensorTemp (temperature of the H201 sensor)
• Extended Menu only:
- HeaterTemp (temperature of the heating plate)
- HeatPower
- ServiceU (value of the ServiceU variable)
- ServiceV (value of the ServiceV variable)
Page 66
Hydran* 201i Instruction Manual
MA-033 Rev. 14.0, 12-Nov-18