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Emerson Rosemount 2051 Series Quick Start Manual page 31

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October 2023
Standards
Markings
Table 7-4: Process connection temperature
Temperature class
T6
T5
T4
Special Conditions for Safe Use (X):
1. This device contains a thin wall diaphragm less than 1 mm
thick that forms a boundary between EPL Ga (process
connection) and EPL Gb (all other parts of the equipment). The
model code and datasheet are to be consulted for details of
the diaphragm material. During installation, maintenance, and
use, the environmental conditions to which the diaphragm will
be subjected shall be taken into account. The manufacturer's
instructions for installation and maintenance shall be followed
in detail to assure safety during its expected lifetime.
2. Appropriate cable, glands, and plugs need to be suitable
for a temperature of 5 °C greater than maximum specified
temperature for location where installed.
3. Flameproof joints are not intended for repair.
4. Non-standard paint options may cause risk from electrostatic
discharge. Avoid installations that could cause electrostatic
build-up on painted surfaces and only clean the painted
surfaces with a damp cloth. If paint is ordered through
a special option code, contact the manufacturer for more
information.
Conduit/cable entries
Unless otherwise marked, the conduit/cable entries in the housing
enclosure use a ½-14 NPT form. Only use plugs, adapters, glands, or
conduit with a compatible thread form when closing these entries.
Entries marked M20 are M20 x 1.5 thread form. On devices with
multiple conduit entries, all entries will have the same thread form.
When installing in a hazardous location, use only appropriately listed
or Ex certified plugs, glands, or adapters in cable/conduit entries.
Quick Start Guide
IEC 60079-0: 2017, IEC 60079-1: 2014-06, IEC
60079-26: 2014-10
Ex db IIC T6...T4 Ga/Gb T6 (–60 °C ≤ Ta ≤ +70 °C),
T4/T5 (–60 °C ≤ Ta ≤ +80 °C)
Process connection
temperature
–60 °C to +70 °C
–60 °C to +80 °C
–60 °C to +120 °C
Quick Start Guide
Ambient temperature
–60 °C to +70 °C
–60 °C to +80 °C
–60 °C to +80 °C
31

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