Yokogawa Multi Channel Oxygen Analyzer System ZR22/AV550G - Manual (Page 51)

IM 11M12D01-01E 3-1
3. Installation
3. Installation
This chapter describes installation of the following equipment:
Section 3.1 Detector (except model ZR22G-015)
Section 3.2 Detector (model ZR22G-015)
Section 3.3 Averaging Converter
Section 3.4 ZA8F Flow Setting Unit
Section 3.5 Calibration Gas Unit Case (E7044KF)
3.1 Installation of the Detector
3.1.1 Location
The following should be taken into consideration when installing the detector:
(1) Easy and safe access to the detector for checking and maintenance work.
(2) Ambient temperature of not more than 150
ЊC, and the terminal box should not
affected by radiant heat.
(3) A clean environment without any corrosive gases.
CAUTION
• A natural convection type detector (model ZR22G-
ᮀ-ᮀ-ᮀ-C), which uses ambient air
as reference gas, requires that the ambient oxygen concentration be constant.
(4) No vibration.
(5) The measurement gas satisfies the specifications described in Chapter 2.
(6) No measured gas-pressure fluctuations.
3.1.2 Probe Insertion Hole
Includes those analyzers equipped with a probe supporter and probe 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 outside dimensions of the
detector in Chapter 3.8 of IM 11M12A01-02E before installation.
• The sensor (zirconia cell) at the probe tip may deteriorate due to thermal shock if
water drops are allowed to fall on it, as it is always at high temperature.