H25-IR
Operation
Instruction 3015-5286
35
4.3 Responding to Fault Conditions
When the instrument’s diagnostics detects that a fault has occurred, the word “FAULT” appears in place of the
Gas Type, and a beep will be heard every 2 seconds.
The cause of the fault can be determined by viewing the Diagnostic menu’s Last Fault function. To display the
Diagnostics menu, first press
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
“DIAGNOSTICS” and then press
ENT
to display the Diagnostics menu.
Main Menu:
SYSTEM
LOG
SETUPS
CAL
DATA
DIAGNOSTICS
FACTORY
Select “LAST FAULT” to display the Last Fault screen. Refer to Section
5.1.2 Last Fault
for a listing of the type
of faults that are tracked by the diagnostics, and for information on how to possibly correct the fault.
When the cause of the fault has been corrected, the FAULT message and the beep are automatically
turned OFF.
4.4 PCHK
(Atmospheric Pressure CHecK)
The instrument maintains its accuracy under varying atmospheric conditions by performing an atmospheric
pressure check once every hour, or immediately after calibration (refer to Section
2.4.7 PCHK Mode
.) When a
PCHK is performed, the unit beeps once, the pump stops, a valve opens exposing the pressure sensor to the
atmosphere, and “PCHK” appears at the bottom-right of the display. During this time the instrument measures
the current atmospheric pressure, and then uses this value along with the current temperature and the ideal gas
law to compute the gas level. When the pressure check is complete (approximately 5 seconds), the unit beeps,
the valve closes, and the pump restarts.
4.5 RS-232 Communication
The RS-232 connector located on the rear of the instrument (refer to Section
1.7.2 Rear View
) is used to flash
the instrument’s memory. Refer to Section
5.3 Flashing Memory
.
Additionally, leak rate data can be output from the port as ASCII text in two formats.
Oz/yr
R134A
SETUP
PCHK
Pressure check in progress
Diagnostics Menu:
SENSOR DATA
LAST
FAULT
IR EMITTER
PRESSURE
LOOP
TEST
CLR LAST FAULT
AUTO
GAIN
Fault has occurred
Oz/yr
FAULT
SETUP
SM SRCH
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 ...
