YOKOGAWA AXW Series - Specific Conditions for Use

IM 01E21A03-02EN
9
<2. Explosion Protection Type>
9
2.7 Specic Condition of Use
Integral Flowmeter, Remote Sensor and Remote
Transmitter
• Electrostatic charges on the non-metallic parts
(excluding glass parts) or coated parts of the
product shall be avoided.
• The ameproof joints differ from the standard
values in EN 60079-1. Only personnel authorized
by the manufacturer of the product can repair the
ameproof joints.
Integral Flowmeter and Remote Sensor
• The applicable temperature class, ambient
temperature range and process temperature
range of the product are shown in Table 2.1 and
Table 2.2.
• The property class of the fasteners used to fasten
the transmitter enclosure onto the neck part is at
least A2-70.
• In the case the electrodes and/or grounding rings
are made of titanium, the sensor should be kept
away from impacts and frictions in hazardous
locations.
• From the safety point of view, the intrinsically
safe circuit of the AXG and AXW series shall be
assumed to be connected to earth.
• The product shall be installed as overvoltage
category II.
Integral Flowmeter and Remote Transmitter
• Multiple types of protection for terminal
compartment, permanently mark the protection
type installed. Once the type is marked, it cannot
be changed. For the installation of multi protection
type, tick the box of the selected type of protection
on the label in order to avoid confusion.