Yokogawa Single Channel Oxygen Analyzer System ZR22/ZR402 - Manual (Page 53)

IM 11M13A01-02E 3-2
F3.01E.EPS
Non-hazardous area Hazardous area
ZR22S DETECTOR
Solenoid Valve
Needle Valve
Needle
Valve
Stop
Valve
Solenoid
Valve
Solenoid
Valve
Flow meter
Regulator
Instrument Air
Regulator
Span Gas
Zero Gas
AV550G
Figure 3.1 Connection with AV550G
Regarding the AV550G installation procedure, refer to IM 11M12D01-01E.
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 60
Њ C, and the terminal box should not
affected by radiant heat.
(3) A clean environment without any corrosive gases.
(4) No vibration.
(5) The measurement gas satisfies the specifications described in Chapter 2.
(6) No measured gas-pressure fluctuations.
3.1.2 CENELEC ATEX (KEMA) Flameproof Type
ZR22S-A Detector for use in hazardous locations:
Note 1: No. KEMA 04ATEX 2156
Type of Protection and Marking Code: EEx d IIB+H
2
Group: II
Category: 2GD
Temperature class: T2, T300
؇C
Enclosure: IP66
Note 2: Wiring
• All wiring shall comply with local installation requirement.
• The cable entry devices shall be of a certified flameproof type suitable for
the condition of use
Note 3: Operation
• Keep the "WARNING" label to the Detector.
WARNING: DO NOT OPEN WHEN ENERGIZED. INSTALL IN
ACCORDANCE WITH THE INSTRUCTION MANUAL.
USE AT LEAST 150
؇C HEAT RESISTANT CABLES.