<2. Handling Cautions>
2-11
IM 01C25W05-01EN
Note 2. Electrical Data
• Supply voltage: 42 V dc max.
• Slave module type, output signal code “S”, is
only to be connected to Master module type,
output signal code “P”, for power supply and
communication by a 4-wire connection.
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.
F0204.ai
Pressure Transmitters
Master module
Power Supply
Master module and Slave module Connection
SUPPLY
SUPPLY
+
–
Master - Slave
Communication Cable
Pressure Transmitters
Slave module
+
–
+
–
A
B
Master - Slave
Communication
Connector
Note 4. Operation
WARNING: AFTER DE-ENERGIZING,
DELAY 10 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. Maintenance and Repair
WARNING
The instrument modification or parts replacement
by other than an authorized Representative of
Yokogawa Electric Corporation is prohibited and
will void the ATEX certification.
Note 6. Specific 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 flow of
dust is avoided.
• The flame paths differ from the standard
values in EN 60079-1. Repair of the
equipment is only allowed when done
by the manufacturer or an authorised
representative.
• 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.
• For transmitters with a membrane made of
titanium, ignition hazard due to impact and
friction on the membranes shall be avoided.
• Maximum Surface Temperature for dust-
proof:T85°C (Tamb.: –30* to 75°C,
Tp.: –30* to 85°C)
* –15°C when /HE is specified.
