YOKOGAWA EXAxt ZR402G, Руководство пользователя

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<3. Installation>
3-1
IM 11M12A01-04E 11th Edition : Jul. 19, 2017-00
3. Installation
This chapter describes installation of the following equipment:
Section 3.1 Model ZR202G Integrated type Zirconia Oxygen/Humidity Analyzer
Section 3.2 Model ZA8F Flow Setting Unit
Section 3.3 Model ZR20H Automatic Calibration Unit
Section 3.4 Case Assembly (E7044KF) for Calibration gas Cylinder
3.1 Installation of ZR202G Zirconia Oxygen/
Humidity Analyzer
The following should be taken into consideration when installing the probe:
(1) Easy and safe access to the probe for checking and maintenance work.
(2) Ambient temperature of not more than 55°C, and the terminal box should not be affected by
radiant heat.
(3) A clean environment without any corrosive gases.
NOTE
A natural convection type analyzer (model ZR202G-

-

-

-

-C), which uses ambient air as
reference gas, requires that the ambient oxygen concentration be constant. Automatic calibration
cannot be used when natural convection is selected as reference gas.
(4) No vibration.
(5) The sample gas satisfies the specifications described in Chapter 2.
(6) No sample gas pressure fluctuations.
CAUTION
The ambient temperature of the ZR202G Integrated type Zirconia Oxygen/Humidity Analyzer
should be between - 20°C and 55°C.
3.1.1 Probe Insertion Hole
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.
• 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 gas outlet on the detector flange. If the flange gasket blocks the
outlet, the detector cannot conduct pressure compensation. Where necessary, make a
notch on the flange gasket.
• 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.