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<3. PIPING>
3-5
IM 11M03A02-00E
Table 3.2
Piping parts
Piping section
Parts required
Description
Calibration gas
piping
Stop valve or Check
valve
Recommended by YOKOGAWA (L9852CB or G7016XH for
Stop valve, E7042VR or E7042VV for Check valve)
* Nipple
R1/4 or 1/4 NPT
On the open market
Zero gas cylinder
Recommended by YOKOGAWA (G7001ZC)
Regulator valve
Recommended by YOKOGAWA (G7013XF or G7014XF)
Piping joint
R1/4 or 1/4 NPT
On the open market
At the reference
gas inlet
Air set
Recommended by YOKOGAWA (K9473XH/K9473XJ)
Piping joint
R1/4 or 1/4 NPT
On the open market
Note : The parts with an asterisk (*) may not be required.
3.2.2
Piping for the Calibration Gas
This piping is to be installed between the zero gas cylinder and the ZA8F flow setting unit, and
between the ZA8F flow setting unit and the ZO21DW detector.
The cylinder should be placed in a calibration gas unit case or the like to avoid any direct sunlight
or radiant heat so that the gas cylinder temperature does not exceed 40°C.
Mount a regulator valve (specified by YOKOGAWA) on the cylinder.
Mount a check valve or stop valve (specified by YOKOGAWA) on the nipple (found on the open
market) at the calibration gas inlet of the detector as illustrated in Figure 3.4.
(The check valve or the stop valve may have been mounted on the detector when shipped.)
Connect the flow setting unit and the detector to a stainless steel pipe ø6 × ø4 mm (or nominal
size 1/4 inch).
F4.8E.EPS
Stop valve or Check valve
Piping for the Calibration gas, ø6 × ø4 mm
Stainless steel pipe
Piping for the Reference gas, ø6 × ø4 mm
Stainless steel pipe
Figure 3.4
Check the valve connection to the calibration gas inlet
Содержание ZO21DW
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