Yokogawa Integral Oxygen Analyzer ZR202 - Manual (Page 44)

<3. Installation>
3-5
IM 11M12A01-04E
<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
Mount the protector so that the notch
is on the downstream side of gas flow.
F3104E.ai
1050,1550, 2050
Gasket (t1.5)
Unit: mm
Detector top
Calibration gas inlet
Reference gas inlet
Figure 3.4 Mounting of detector with a probe protector (Dust wear protect)
NOTE
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.
3.2 Installation of ZA8F Flow Setting Unit
3.2.1 Installation Location
The following should be taken into consideration:
(1) Easy access to the unit for checking and maintenance work.
(2) Near to the detector and the converter
(3) No corrosive gas.
(4) An ambient temperature of not more than 55°C and little changes of temperature.
(5) No vibration.
(6) Little exposure to rays of the sun or rain.