Yokogawa Single Channel Oxygen Analyzer System ZR22/ZR402 - Manual (Page 49)

IM 11M12A01-03E 3-2
3.1.2 Probe Insertion Hole
Includes those analyzers equipped with a dust protector.
When preparing the probe insertion hole, the following should be taken into consider-
ation:
CAUTION
• The outside dimension of detector may vary depending on its options. Use a pipe that
is large enough for the detector. Refer to Figure 3.1 for the dimensions.
• If the detector is mounted horizontally, the calibration gas inlet and reference gas inlet
should face downwards.
When using the detector with pressure compensation, ensure that the flange gasket
does not block the reference air outlet on the detector flange. If the flange gasket
blocks the outlet, the detector cannot conduct pressure compensation. Where neces-
sary, make a notch in the flange gasket. Confirm the external dimensions of the
detector in Section 3.7 before installation.
• The sensor (zirconia cell) at the probe tip may deteriorate due to condensation as it is
always at high temperature.
(1) Do not mount the probe with the tip higher than the probe base.
(2) If the probe length is 2.5 meters or more, the detector should be mounted vertically
(nomore than a 5
°
tilt).
(3) The detector probe should be mounted at right angles to the measurement gas
flow or the probe tip should point downstream.
Figure 3.1 illustrates an example of the probe insertion hole.
100mm
100mm
F3.1E.EPS
(vertical)
Bounds of the probe
insertion hole location
Flange matches
to the detector size
(horizontal)
(Note)
When using the detector with ZH21B dust protector the diameter of the hole
should be 80mm or larger.
*1
*Note
Type Outside diameter of detector
Standard 50.8 mm in diameter (Note)
With dust protector 80 mm in diameter or longer(Note)
Four-hole flange Eight-hole flange JIS flange(the detector
with dust protector)
*1
When using the detector with pressure compensation, ensure that the flange gasket does
not block the reference air outlet on the detector flange. If the flange gasket blocks the
outlet, the detector cannot conduct pressure compensation. Where necessary, make a
notch in the flange gasket. Confirm the outside dimensions of the detector in Section 3.7
before installation.
Figure 3.1 Example of forming probe insertion hole