Installation Of Zh21B Dust Protector - YOKOGAWA ZR402G User Manual

(2) Make sure that the sensor assembly mounting screws (four bolts) at the probe tip are not
loose.
(3) Mount the detector so that the calibration/reference gas inlet faces downward.
Direction of the sample gas flow
Detector top
Figure 3.4
<Detector with a probe protector (Model ZO21R-L-- *B for dust wear protect>
The detector is used with a probe protector to prevent the sensor from being worn by dust
particles when there is a high concentration of dust and gas flow exceeds 10 m/sec (fine-carbon
boiler or fluid-bed furnace).
(1) Put the gasket that is provided by user between the flanges, and mount the probe protector
in the probe insertion hole. The probe protector should be installed so that the notch comes
to the downstream of the sample gas flow.
(2) Make sure that the sensor assembly mounting screws (four bolts) at the probe tip are not
loose.
(3) Where the detector is mounted horizontally, the calibration/reference gas inlet should face
downward.
Direction of the sample gas flow
Detector top
Mount the protector so that the notch
is on the downstream side of gas flow.
Figure 3.5
CAUTION
When the probe protector is used in the ZR202G with pressure compensation (-P), instrument air
leaking from the probe protector may affect the measured value.
3.1.4

Installation of ZH21B Dust Protector

(1) Put the gasket that is provided by the user between the flanges and mount the dust
protector in the probe insertion hole.
(2) Make sure that the cell assembly mounting screws (four) at the probe tip are not loose.
Notch
Probe protector (supporting the mounting strength)
1050,1550, 2050
Mounting of detector with a probe protector (Dust wear protect)
2050
Ø60.5
<3. Installation>
Unit: mm
Gasket (t1.5)
Calibration gas inlet
Reference gas inlet
Unit: mm
Gasket (t1.5)
Calibration gas inlet
Reference gas inlet
IM 11M12A01-04E 11th Edition : Jul. 19, 2017-00
3-4
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