horiba SF-1U, Instruction Manual

Page: 50 / 60

E-15
8.2. A1 alarm
(Detecting start detector errors)
A1 alarm generated
Check filming condition Abnormal
Abnormal
Normal Check filming operation
Abnormal
Check measured flow rate
Normal
※
Repair
Replace VP Normal
Check filming Abnormal
Abnormal liquid level
Check alarm time Adjust
Normal liquid level
Set time
Normal Check filming liquid Abnormal
for contamination
Replace
Normal filming liquid
Abnormal Check measuring tube
for contamination
Clean measuring tube Normal
※
Check, repair or overhaul
detector
Items marked with “
※
” are services from HORIBA STEC,CO.,LTD. or your dealer.
Placing order for the services is recommended.

A1 alarm (
Ａ１：−−−−
)
This alarm is generated if the time from film creation to its detection by the start
detector takes more than 120 seconds (180 seconds for VP-1U) due to film breakage
or attempting to measure a flow rate outside the specification range.
Wet inside measuring tube and check the flow rate attempting to measure. The
alarm time (120 or 180 seconds) can be changed.
⇒6.4

Automatic wetting operation alarm (
Ａ１：−−−Ａ
)
This alarm is generated if the interior walls of the measuring tube do not get wet in
120 seconds after starting the automatic wetting operation. Check the flow rate
attempting to measure and the filming liquid level. The alarm time (120 seconds) can
be changed.
⇒6.4
(Common to the A1 alarm)
Cleaning measuring tube.
⇒7.1.3
Press the START key to reset the alarm.