6-2
Cautions regarding explosion-proof models
■
Introduction
When using an explosion-proof model, be sure to use the product correctly, paying suf-
ficient attention to the cautions in this chapter.
■
Flameproof structure
“Flameproof structure” refers to a structure in which, if an explosion of the explosive
gas occurs inside the enclosure in the fully closed state, the enclosure will withstand the
resulting pressure, and in addition, there will be no danger of igniting external explosive
gas.
■
Installation location selection criteria
[1. TIIS flameproof]
Select an installation location for a TIIS flameproof model in accordance with the fol-
lowing criteria.
•
Hazardous areas in which this device can be installed are defined as follows.
IIC
T6
Specifically, the hazardous areas in which the device can be installed are Type 1 areas
and Type 2 areas. The device cannot be installed in Type 0 areas.
Ambient temperature range: −20 to +55 °C
Warning
•
Do not loosen the fastening screws of the cover and angle sensor while the device is
turned on and for one minute after it is turned off. Doing so can cause an explosion
to occur.
Caution
•
Be sure to install the specified (the provided) flameproof cable gland on the signal
wiring port of the device. Also, if the orientation of the wiring needs to be changed,
use the provided flameproof elbow. In terms of flameproof configuration, in order
to guarantee flameproof specifications, only specified flameproof cable glands and
flameproof elbows may be used.
•
When using the device, give sufficient consideration to preventing corrosion, defor-
mation, damage, etc. with respect to the products case, cover, and the like. In addi-
tion, fasten the cover sufficiently tightly with the locking screw, and do not under
any circumstances open the cover while the device is in use.
•
When performing wiring in an environment that conforms to low pressure wiring
work in a Type 1 hazardous area, perform the work in accordance with the “New
Plant Electrical Equipment Explosion-Proofing Guide (Gas Explosion-Proofing,
1985),” published by the Technology Institution of Industrial Safety.
Ambient atmosphere with gas ignition point of 85 °C or higher
Ambient atmosphere of explosive gas classified as IIC
Summary of Contents for AVP200
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Page 80: ...4 4 Menu Tree...
Page 120: ...5 16...
Page 128: ...6 8 For models those date of manufacture are before September 2017...
Page 130: ...6 10 For models those date of manufacture are before September 2017...
Page 132: ...6 12 For models those date of manufacture are before September 2017...
Page 136: ...6 16 For models those date of manufacture are after October 2017...
Page 138: ...6 18 For models those date of manufacture are after October 2017...
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