Long Term History; Service History - GE Hydran 201 i Instruction Manual

Chapter 4 • Hydran 201Ti's Displays and Menus
4.5.1.3

Long Term History

From one to four times per day (adjustable; see Section 4.5.1.5 on page 4-15), the date and
time plus ten variables are stored in the historic data file Long Term. Its capacity is
480 recordings; when the file is full and a new recording occurs, the oldest recording is
deleted (first in, first out method).
Navigation in this file is performed the same way than in the historic data file Short Term
(see Section 4.5.1.2 on page 4-13).
The ten variables recorded in the historic data file Long Term are the same as the ones
recorded in the Events file (see Section 4.5.1.1 on page 4-12).
4.5.1.4

Service History

A semimonthly, automatic test of the Hydran 201 sensor is performed the first and fifteenth
days of each month at midnight (fixed logging rate, non adjustable); for each test, the date
and time of the test plus seven variables are recorded in the historic data file Service. Its
capacity is 120 recordings (five years); when the file is full and a new recording occurs, the
oldest recording is deleted (first in, first out method).
Navigation in this file is performed the same way as in the historic data file Short Term (see
Section 4.5.1.2 on page 4-13).
The following seven variables are recorded in the Service file:
• Battery (voltage of the battery)
• ServiceL (value of the ServiceL variable)
• ServiceI (value of the ServiceI variable)
• ServiceA (value of the ServiceA variable)
• SensorTemp (temperature of the H201 sensor)
• SerialNumber (serial number of the H201 sensor)
• GasLevel
Note: The ServiceL, ServiceI and ServiceA variables pertain to the H201 sensor automatic
test and are reserved to the General Electric Canada Customer Service. A defective H201
sensor immediately triggers the fail alarm (if this alarm condition is on; see the FaultTrig.
parameter in Section 4.5.7.3 on page 4-24).
4-14 Rev. 6, March 2011 Part 17997