Operation
H25-IR
34
Instruction 3015-5286
4.2.10.3 Viewing the Total of All Logged Measurements
The ability to display the total of all logged measurements (up to 50) is useful in situations where it is necessary
to test an installation or piece of equipment that has a maximum permissible total leak rate. For example, a
halogen fire suppression system can have leaks, but the combined leak rate or the sum of all the leaks cannot
exceed a certain level, which is typically specified as a fraction of the total charge per year.
To display the total of all logged measurements, first display the Log menu as described Section 4.2.10. Next,
use the
Up
and
Down
buttons to highlight “LOG TOTAL” and then press the
ENT
button to display the Log
Total screen. Note that the display is auto ranging, causing the decimal point to turn off above the value 99.9. In
the example below, the total of all logged measurements is 78.5 Oz/yr.
4.2.10.4 Setting the Log Limit
The ability to set a log limit is useful when using the H-25IR to log the leak rate of a system that has a maximum
permissible total leak rate. A relay can be programmed to energize when the total of all logged measurements
(up to 50) equals the log limit (refer to Section
2.4.3 Relays
).
To set the log limit, first display the Log menu as described in Section 4.2.10. Next, use the
Up
and
Down
buttons to highlight “LOG LIMIT” and then press the
ENT
button to display the Log Limit screen. Use the
Left
and
Right
buttons to move the blinking cursor across the screen to highlight the digit to be modified, and then
use the
Up
and
Down
buttons to modify that digit. Press
ENT
to save the log limit value and return to the Log
menu.
LOG TOTAL
COMBINED LEAK RATE
= 78.5 Oz/yr
LOG LIMIT
IS 99
9
.00 Oz/yr
Summary of Contents for H25-IR
Page 6: ...Contents H25 IR iv Instruction 3015 5286 Notes ...
Page 26: ...Preparing for Operation H25 IR 20 Instruction 3015 5286 Notes ...
Page 34: ...Calibration H25 IR 28 Instruction 3015 5286 Notes ...
Page 43: ...H25 IR Operation Instruction 3015 5286 37 Notes ...
Page 68: ...Specifications H25 IR 62 Instruction 3015 5286 Notes ...
