<3. Installation>
3-4
IM 11M12G01-02EN 1sh Edition : Mar. 25, 2021-00
1050,1550,2050
Notch
Unit: mm
F3-3E.ai
Gasket (t1.5)
Reference gas inlet
Calibration gas inlet
Flow direction of the
sample gas
Φ60.5
Probe top
Figure 3.4 Probe protector (supporting the mounting strength)
<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
in the probe insertion hole. The probe protector should be installed so that the notch is
(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 reference gas and calibration gas inlet
should face downward.
CAUTION
When the probe protector is used in the ZR22G with pressure compensation (-P), instrument air
Direction of the sample gas flow
Mount the protector so that the notch is
the downstream side of the gas flow.
Reference gas inlet
Calibration gas inlet
Unit: mm
F3-4E.ai
Probe top
1050,1550,2050
Gasket (t1.5)
Figure 3.5 Mounting of detector with a probe protector
3.1.4 Installation of ZH21B Dust Protector
protector in the probe insertion hole.
(2) Make sure that the cell assembly mounting screws (four) at the probe tip are not loose.
(3) Mount the detector so that the calibration gas inlet and the reference gas inlet face
downward.
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