YOKOGAWA EJX530A - Page 18

<2. Handling Cautions>
2-10
IM 01C25F01-01E
• Maximum Surface Temperature for dust-proof:
T85°C (Tamb.: –30* to 75°C, Tp.: –30* to
85°C)
*–15°Cwhen/HEisspecied.
Note 2. Electrical Data
• Supply voltage: 42 V dc max.
32 V dc max. (FOUNDATION Fieldbus and
PROFIBUS PA type)
9 to 28 V dc, 27 mW (Low Power type)
9 to 30 V dc, 250 mW (RS485 Modbus
Communication Type)
• Output signal: 4 to 20 mA
15 mA (FOUNDATION Fieldbus and
PROFIBUS PA type)
1 to 5 V (Low Power type)
RS485 Modbus (RS485 Modbus
Communication 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certiedbyATEX
and shall be installed so as to maintain the
specicdegreeofprotection(IPCode)ofthe
equipment.
• Wiring connection for output signal code Q
(Low Power type) shall follow the diagram
below.
F0213.ai
Three-Wire Connection
Pressure Transmitters
Power Supply
Voltmeter
SUPPLY
+
SUPPLY –
A
+
–
+
–
Four-Wire Connection
Pressure Transmitters
Power Supply
Voltmeter
SUPPLY
+
SUPPLY –
A
+
–
+
–
Note 4. Operation
• Keep the “WARNING” label attached to the
transmitter.
WARNING: AFTER DE-ENERGIZING,
DELAY 5 MINUTES BEFORE OPENING.
WHENTHEAMBIENTTEMP.≥65°C,USE
HEAT-RESISTING CABLE AND CABLE
GLAND≥90°C.
• Take care not to generate mechanical
sparking when accessing to the instrument
and peripheral devices in a hazardous
location.
Note5. SpecicConditionsofUse
WARNING
• Electrostatic charge may cause an explosion
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 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 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owof
dust is avoided.
• Theinstrumentmodicationorparts
replacement by other than an authorized
Representative of Yokogawa Electric
Corporation is prohibited and will void the
certication.
• The fasteners used to fasten the transmitter
enclosure onto the sensor capsule is special
fastener, and the property class of it is
A2-50(A4-50) or more.
• Maximum Surface Temperature for dust-proof:
T85°C (Tamb.: –30* to 75°C, Tp.: –30* to 85°C)
*–15°Cwhen/HEisspecied.
c. ATEX Intrinsically Safe Type/ATEX
Flameproof Type
EJX/EJA-E Series pressure transmitters with
optional code /KU22 or /V1U1 can be selected
the type of protection ATEX Flameproof,
Intrinsically Safe. Ex ia, or Ex ic for use in
hazardous area.