Piping Parts For System 1; Piping For The Calibration Gas; Piping For The Reference Gas - YOKOGAWA ZR402G User Manual

4.1.1

Piping Parts for System 1

Check that the parts listed in Table 4.1 are provided.
Table 4.1
Equipment
Oxygen/ Calibration gas inlet Stop valve
Humidity
Analyzer
Reference gas inlet
Note: Parts with marking * are used when required.
General parts can be found on the local market.
4.1.2

Piping for the Calibration Gas

When carrying out calibration, connect the piping (6(O.D) x 4(I.D.) mm tube) from the standard
gas unit to the calibration gas inlet of the oxygen analyzer. Mount the stop valve (of a quality
specified by YOKOGAWA) through a nipple (found on the local market) as illustrated in Figure
4.2, and mount a joint (also found on the local market) at the stop valve tip. (The stop valve may
be mounted on the equipment when the oxygen analyzer is shipped.)
Note: Mount the stop valve in the vicinity of the equipment.
Stop valve
Tube connection
joint
Figure 4.2
4.1.3

Piping for the Reference Gas

• Normally, no piping is required for the reference gas inlet when the equipment applies
natural convection for reference gas (models ZR202G-----C). Leave the plug as it is.
If the air around the probe is polluted and the necessary oxygen concentration (21 vol%O
cannot be obtained, make 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-----E or P).
4.2 Piping for System 2
Piping in System 2 is illustrated in Figure 4.3.
Piping Parts
Piping location Parts Name
Nipple *
Joint for tube
connection
(Sealed up)
Nipple
Piping for the Calibration Gas Inlet
Description
(L9852CB or G7016XH) recommended by
YOKOGAWA
Rc1/4 or 1/4 NPT
Rc1/4 (1/4NPT) for a 6x4mm
soft tube
(when piping is required, refer to Section 4.1.3)
F4.2E.ai
<4. Piping>
General parts
General parts
IM 11M12A01-04E 11th Edition : Jul. 19, 2017-00
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