20
4-7. Supplying measuring gas
Install the attached gas inlet socket to the sampling point and connect the sampling hose between the gas
inlet socket and GAS IN plug of main unit to supply a measuring gas.
(Supply pressure: 0.1 - 0.7 MPa (gauge pressure))
12.
CAUTION
If a measuring gas contains an interference gas (other than SF6 and air), accurate readings
cannot be obtained. Do not measure gases that contain interference gases.
The end of handy aspirator of the purity meter should be opened to atmosphere.
11.
WARNING
The purity meter is designed to introduce a gas of 0.1 to 0.7 MPa (gauge pressure) through
GAS IN. Do not introduce a gas that exceeds the range of 0.1 to 0.7 MPa (gauge pressure).
Otherwise, a failure may be caused.
Do not directly connect to a place where a pressure exceeding the range of 0.1 to 0.7 MPa
(gauge pressure) is present. The internal tubing system may be damaged.
When the reference calibration is performed in the atmosphere, check the atmosphere for
freshness before beginning the calibration. If interference gases exist, the adjustment cannot
be performed properly and thus correct measurement of gas concentration may not be
performed.
Before use, check that there remains sufficient battery power. When the purity meter is not
used for a long period, the batteries may be exhausted. Never fail to replace them with new
ones before use.
If a battery error occurs, gas measurement cannot be performed. If an error is displayed
during use, turn off the power and promptly replace the batteries in a safe area.
Do not block the buzzer sound opening. No buzzer sound can be heard.
Sampling point
[Supply pressure]
0.1 - 0.7 MPa
(gauge pressure)
）
Gas inlet socket
GAS IN plug
Sampling hose
R1/8
