<2. Handling Cautions>
2-9
IM 01C25K01-01E
Note 3. Installation
• Refer to the control drawing.
All wiring shall
comply with local installation requirements.
Pressure Transmitters
Supply
Safety Barrier *1
Nonhazardous Location
[Control Drawing]
Hazardous Location
+
–
+
–
F0206.ai
*1: In any safety barriers used the output current must be
limited by a resistor “R” such that Io=Uz/R.
Note 4. Maintenance and Repair
• The instrument modification or parts
replacement by other than authorized
representative of Yokogawa Electric
Corporation is prohibited and will void
DEKRA Intrinsically safe Certification.
Note 5. Special Conditions for Safe Use
WARNING
• In the case where the enclosure of the
Pressure Transmitter is made of aluminium,
if it is mounted in an area where the use of
category 1 G apparatus is required, it must
be installed such, that, even in the event of
rare incidents, ignition sources due to impact
and friction sparks are excluded.
• Electrostatic charge may cause an exlosion
hazard. Avoid any actions that cause the
generation of electrostatic charge, such as
rubbing with a dry cloth on coating face of
the product.
• In case of the enclosure of the Pressure
Transmitter with paint layers, if it is mounted
in an area where the use of category 2D
apparatus is required, it shall be installed in
such a way that the risk from electrostatic
discharges and propagating brush
discharges caused by rapid flow of dust is
avoided.
• To satisfy IP66 or IP67, apply waterproof
glands to the electrical connection port.
•
When the lightning protector option is
specified, the apparatus is not capable
of withstanding the 500V insulation test
required by EN60079-11. This must be taken
into account when installing the apparatus.
b. ATEX Flameproof Type
Caution for ATEX flameproof type.
Note 1. EJX/EJA-E Series pressure transmitters
with optional code /KF22 for potentially
explosive atmospheres:
• No. KEMA 07ATEX0109 X
• Applicable Standard: EN 60079-0:2009,
EN 60079-1:2007, EN 60079-31:2009
• Type of Protection and Marking Code:
Ex d IIC T6...T4 Gb, Ex tb IIIC T85°C Db
• Group: II
• Category: 2G, 2D
• Enclosure: IP66/IP67
• Temperature Class for gas-poof:
T6, T5, and T4
• Ambient Temperature for gas-proof:
–50 to 75°C (T6), –50 to 80°C (T5), and
–50 to 75°C (T4)
• Maximum Process Temperature (Tp.) for
gas-proof:
85°C (T6), 100°C (T5), and 120°C (T4)
•
Maximum Surface Temperature for dust-
proof:
T85°C (Tamb.: –30* to 75°C, Tp.: 85°C)
* –15°C when /HE is specified.
Note 2. Electrical Data
•
Supply voltage: 42 V dc max.
32 V dc max. (F
OUNDATION
Fieldbus and
PROFIBUS PA type)
9 to 28 V dc, 27 mW (Low Power type)
•
Output signal: 4 to 20 mA
15 mA (F
OUNDATION
Fieldbus and
PROFIBUS PA type)
1 to 5 V (Low Power type)
Note 3. Installation
•
All wiring shall comply with local installation
requirement.
• Cable glands, adapters and/or blanking
elements with a suitable IP rating shall
be of Ex d IIC/Ex tb IIIC certified by ATEX
and shall be installed so as to maintain the
specific degree of protection (IP Code) of the
equipment.
•
Wiring connection for output signal code Q
(Low Power type) shall follow the diagram
below.
