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H25-IR Operation
Instruction 3015-4342 33
4.2.9 Logging Measured Readings
The H25-IR can log up to 50 measurements, which can then be viewed and analyzed at a later time. Each
logged measurement is given a date & time stamp for identification. The measurements are stored in non-
volatile memory, and will not be erased when the instrument is turned OFF.
With the instrument in its Measure mode, press the LOG button to log the measurement that is
currently being displayed on the Data Display screen. Note that logged data is stored on a first-in, first-out
basis. Once 50 measurements have been stored, the newest stored measurement overwrites the oldest.
NOTE: Only non-zero measurements will be logged.
In the following example, a reading of 0.48 Oz/yr is about to be logged in memory location 11. Pressing the
ENT button will confirm this action and then display a Measurement Logged screen, which confirms that
the data has been saved while also showing the current total of all leaks logged.
IMPORTANT! The instrument does not perform a units-of-measure conversion. It is therefore very important
that the operator not change the leak units value after beginning to log measurements.
TIP: When measuring the total leak-rate of a system, it’s important to clear the log per Section “
4.2.10.2
Clearing the Log” before starting a new series of leak-rate measurements.
4.2.10 Working with Logged Measurements
Each of the 50 logged measurements can be individually viewed, or the total accumulated value of all 50
measurements can be displayed. In addition, a log limit can be set that establishes a setpoint at which a
relay is energized when the total of all logged measurements (up to 50) equals the log limit.
Enter the Log menu by first pressing both the ENT and ESC buttons on either the instrument’s front
panel or Smart probe at the same time to display the Main menu. Next, use the Up and Down buttons to
highlight “LOG”, and then press ENT to display the Log menu.
Main Menu:
SYSTEM
LOG
SETUPS
CAL DATA
DIAGNOSTICS
4.2.10.1 Viewing Logged Measurements
Display the Log menu as described in Section 4.2.10. Next, use the Up and Down buttons to highlight
“VIEW LOG” and then press the ENT button to display the first logged data point.
Use the Up and Down buttons to scroll through the other log points (1 thru 50).
Use the Left or Right button to clear only the current log point. To clear all log points, refer to Section
4.2.10.2 Clearing the Log.
Log Menu:
VIEW LOG
CLEAR LOG
LOG TOTAL
LOG LIMIT
LOG POINT # 1
08/09/04 07:35
LEAK RATE=2.80 Oz/yr
L/R ARROW TO CLEAR
LOG 0.48
AS 11 OF 50
PRESS ENTER
TO CONFIRM?
Oz/yr
R134A
SETUP
SM MERS
MEASUREMENT
LOGGED
TOTAL=55.8
Oz/yr
R134A
SETUP
SM MERS