Yokogawa Multi Channel Oxygen Analyzer System ZR22/AV550G - Manual (Page 69)

IM 11M12D01-01E 4-3
4. Piping
4.1.1 Parts Required for Piping in a System Using Flow Setting Units for Manual
Calibration
Referring to Table 4.1, check that the parts required for your system are ready.
Table 4.1
Detector Piping Location Part Description
General-purpose Calibration gas inlet Stop valve Yokogawa recommended:
detector L9852CB or G7016XH
* Nipple Rc1/4 or 1/4 NPT General
Tube fitting Rc1/4 (1/4NPT) for a ␾6 ϫ␾4mm General
soft tube
Reference gas inlet (sealed up) (when piping is required, refer to § 4.1.3)
High-temperature Calibration gas inlet Stop valve Yokogawa recommended:
detector L9852CB or G7016XH
* Nipple Rc1/4 or 1/4 NPT General
Tube fitting Rc1/4 (1/4 NPT) for a
␾6 ϫ␾4mm soft tube
Reference gas inlet (sealed up) (when piping is required, refer to § 4.1.3)
Sample gas outlet * Auxiliary ejector Yokogawa recommended,
E7046EC or E7046EN
* Equal tee, connection R1/4 or 1/4 NPT General
fitting
* Needle valve Rc1/4 or 1/4 NPT General
* Reducing nipple R1/2 to R1/4 or R1/2 to 1/4 NPT General
Note: Parts marked with an asterisk (*) are used when required.
General parts are commercially available. T4.1E.EP S
4.1.2 Piping for the Calibration Gases
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 ZR22G 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
ЊC.
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 4.8.
(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 6 mm
(O.D.) ~ 4 mm or larger (I.D.) (or nominal size 1/4 inch).
F4.2E.EPS
Nipple Stop valve
Tube connection
joint
Figure 4.2 Connection to the calibration gas inlet