Yokogawa EJX930A - Manual (Page 25)

<3. Handling Cautions>
3-8
IM 01C25R01-01E
WARNING
To satisfy IP66 or IP67, apply waterproof glands
to the electrical connection port.
c. ATEX Intrinsically Safe Type/ATEX
Flameproof Type/ATEX Type n
EJX multivariable transmitters with optional code
/KU22 can be selected the type of protection ATEX
Intrinsically Safe, Flameproof or ATEX Type n for
use in hazardous locations.
Note 1. For the installation of this transmitter,
once a particular type of protection is
selected, any other type of protection
cannot be used. The installation must be in
accordance with the description about the
type of protection in this user’s manual.
Note 2. In order to avoid confusion, unnecessary
marking is crossed out on the label other
than the selected type of protection when
the transmitter is installed.
 CENELEC ATEX Type of Protection “n”
• Applicable Standard: EN 60079-15:2005,
EN 60079-0:2009
• Type of Protection and Marking Code:
Ex nL IIC T4 Gc
• Group: II
• Category: 3G
• Temperature Class: T4
• Enclosure: IP66 / IP67
• Process Temperature: 120°C max.
• Ambient Temperature: –30* to 60°C
* –15°C when /HE is specified.
Note 1. Electrical Data
[Supply and Pulse circuit]
Ui = 30 V
Ci = 10 nF
Li = 0 mH
[Sensor circuit]
Uo =7.4 V
Io = 25 mA
Po = 46.3 mW
Co = 11 nF
Lo = 3.9 mH
Note 2. Installation
• All wiring shall comply with local installation
requirements. (refer to the installation
diagram)
Note 3. Maintenance and Repair
• The instrument modification or parts
replacement by other than authorized
representative of Yokogawa Electric
Corporation is prohibited and will void Type
of Protection “n”.
Transmitter
Supply
Associated
Apparatus
Nonhazardous Location
[Installation Diagram]
Hazardous Location
+
–
+
–
F0306.ai
Associated
Apparatus
Associated
Apparatus
Sensor out
RTD sensor
Note 1
 Without pulse output
 With pulse output
Transmitter
Supply
Nonhazardous Location Hazardous Location
Sensor out
RTD sensor
Note 1
Pulse
Note 1:
• RTD sensor is prepared by the user.
• The sensor signal line must withstand a test voltage of
500Vac.
Note 4. Special Conditions for Safe Use
WARNING
• Electrostatic charge may cause an exlosion
hazard. Avoid any actions that cause the
gerenation of eletrostatic charge, such as
rubbing with a dry cloth on coating face of
the product