Yokogawa Integral Oxygen Analyzer ZR202 - Manual (Page 58)

IM 11M12A01-05E 4-2
4.1.1 Piping Parts for System Configuration 1
Check that the parts listed in Table 4.1 are provided.
Table 4.1 Piping Parts
Equipment Piping location Parts Description
Humidity Analyzer Calibration gas inlet Stop valve (L9852CB or G7016XH) recommended by
YOKOGAWA
Nipple * Rc1/4 or 1/4 NPT Commercially available
Joint for tube connection Rc1/4 (1/4NPT) for a Commercially available
[63[4mm soft tube
Reference gas inlet (Sealed up) (when piping is required, refer to Section 4.1.3)
Note: Parts marked with * are used when required. T4.1E.EPS
4.1.2 Connection to the Calibration Gas Inlet
When carrying out calibration, connect the piping (6(O.D) 3 4(I.D.) mm tube) from the
standard gas unit to the calibration gas inlet of the equipment. Mount the stop valve (of
a quality specified by YOKOGAWA) through a nipple (found on the open market) as
illustrated in Figure 4.2, and mount a commercially available joint at the stop valve tip.
(The stop valve may be mounted on the equipment prior to shipping the equipment.)
Note 1 : Mount the stop valve in the vicinity of the equipment.
F4102.EPS
Stop valve Nipple
Joint for tube
connection
Figure 4.2 Connection to the Calibration Gas Inlet
4.1.3 Connection to the Reference Gas Inlet
• Normally, no piping is required for the reference gas inlet when the equipment uses
natural convection for reference gas (models ZR202G-h-h-h-C). Leave the plug as
it is. If the air around the probe is polluted and the necessary oxygen concentration
(21 vol% O
2
) cannot be obtained, make an instrument air piping as in Section 4.2,
System 2.
• When the equipment uses instrument air for the reference gas, piping is required as
described in Section 4.2, System 2 (models ZR202G-h-h-h-E or -P).