horiba SF-1U, Инструкция по эксплуатации

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E-12
※
When checking the automatic measurement results after resetting the automatic
measurement mode, press the AUTO key twice to enter the automatic measurement
mode/data call-up. (The indicator on the AUTO key flashes.) Then, follow the
procedures as described in
⑦
above.
※
The measured data will be stored in the memory until the next automatic
measurement event takes place or the power is turned off.
6.3. Explanation on flow rate expression
The SF-1/SF-2 corrects measurement results with atmospheric pressures, temperatures and
vapor pressures to improve the measurement accuracy. The corrective expression is as
follows.
Po
Pw Pa
t T
to T
S
V
Q




  
60
Q
:
Flow rate (L/min, at calibration temperature and 1013.3hPa)
V
:
Volume between detectors (L)
S
：
Time for passing two detectors (sec)
T
:
Absolute temperature at 0
℃
(=273K)
to
:
Calibration temperature (
℃
)
t
:
Ambient temperature at the time of measurement(
℃
)
Pa
:
Atmospheric pressure (hPa)
Pw
:
Vapor pressure at
t
℃
(hPa)
Po
:
Standard atmospheric pressure (=1013.3hPa)
6.4. Alarm time setting
Set to 120sec for A1 and A2 at the factory:
You may change the waiting time for the Al/A2 alarms to reduce the measurement duration or
to measure flow rates outside the specification range such as for measuring flow rate range for
the VP-1U while using the VP-2U. To change the Al/A2 alarm waiting time, follow the
procedure below.
①
While holding the SET key “
▽
”, turn on the power switch. Hold down the SET key
“
▽
” for five seconds. The equipment will be ready for changing the alarm time
settings.
②
Use the SET keys to enter the alarm time. (Setting range: 1
〜
999sec.)
③
Each time the SELECT key is pressed, the display switches between “
Ａ１：
” and “
Ａ
２：
”. Use the SET keys to set the new alarm waiting time.
※
Pressing the SET keys (“
△
”,”
▽
”) simultaneously sets the alarm waiting time to the
initial value of 120 seconds (180 seconds for VP-1U).
④
Turn off the power switch.