SK00-9662-EI-103-00
23
Fig. 7-3 Gas humidity dependence (Effect of humidity on atmospheric pressure value)
7.2.
Zero point adjustment and atmospheric pressure adjustment
The following items are the causes of the deviation of the zero point and atmospheric
pressure of this unit. If the adjustment is off, not only the error near the zero point
or near the atmospheric pressure will increase, but also the error in the entire pressure
measurement range will increase.
①
The ambient temperature is different from the atmospheric pressure or the
temperature adjusted at the zero point.
⇒
Make adjust again at the operating ambient temperature.
*Adjusted at about 25
℃
at the time of shipment.
②
The measuring gas is not N
2
.
⇒
Consider the gas species dependence.
③
Deposited with oil or other contamination
⇒
It is recommended to install an isolation valve to prevent contamination.
⇒
It is recommended to replace the sensor regularly in an environment where
dirt contaminants.
④
Deposited with moisture
⇒
It is recommended to install an isolation valve to prevent moisture.
⇒
Consider measures to reduce water bedewing in humid environment
⇒
If moisture is deposited, the response speed decreases, especially on the
zero point side.
0.0E+00
2.0E+04
4.0E+04
6.0E+04
8.0E+04
1.0E+05
1.2E+05
0%
10%
20%
30%
40%
50%
60%
70%
80%
90%
100%
P
RE
S
SU
R
E
(
Pa
)
HUMIDITY (%)
ATM ADJUST:HUMIDITY 90%
Summary of Contents for SWU10-U
Page 6: ...SK00 9662 EI 103 00 VI Revision history Date Number Reason 2022 12 14 00 First edition...
Page 34: ...SK00 9662 EI 103 00 27 9 EC DECLARATION OF CONFORMITY...
Page 35: ...SK00 9662 EI 103 00 28 10 UK DECLARATION OF CONFORMITY...
Page 36: ...SK00 9662 EI 103 00 29 11 Certificate of decontamination...
Page 37: ...SK00 9662 EI 103 00 30 12 Drawings 12 1 SWU10 U dimensions...
Page 38: ...SK00 9662 EI 103 00 31 12 2 SWU10 U dimensions...
