Emerson Rosemount 2051 Quick Start Manual page 22

Quick Start Guide
2. The relation between T code and ambient temperature range is:
–50 °C ≤ T
–50 °C ≤ T
3. The earth connection facility in the enclosure should be connected reliably.
4. During installation, use and maintenance of the product, observe the warning "Don't
open the cover when the circuit is alive."
5. During installation, there should be no mixture harmful to flameproof housing
6. Cable entry and conduit, certified by NEPSI with type of protection Ex d IIC Gb and
appropriate thread form, should be applied when installed in a hazardous location.
Blanking elements should be used on the redundant cable entries.
7. End users are not permitted to change any internal components, but to settle the
problem in conjunction with the manufacturer to avoid damage to the product.
8. Maintenance should be done in a non-hazardous location.
9. During installation, use and maintenance of this product, observe the following
standards: GB3836.13-2013, GB3836.15-2000, GB3836.16-2006, GB50257-2014
E3 China Intrinsic Safety
Certificate: GYJ12.1295X; GYJ15.1365X [Flowmeters]
Standards: GB3836.1-2010, GB3836.4-2010, GB3836.20-2010
Markings: Ex ia IIC T4 Ga (–60 °C ≤ T
Special Conditions for Safe Use (X):
1. Symbol "X" is used to denote specific conditions of use:
a. The Ex d blanking elements, cable glands, and wiring shall be suitable for a
temperature of 90 °C.
b. This device contains a thin wall diaphragm. Installation, maintenance and use shall
take into account the environment conditions to which the diaphragm will be
subjected.
2. The relation between T code and ambient temperature range is:
Model
HART, Fieldbus, PROFIBUS, and Low Power
3. Intrinsically Safe parameters:
Parameter
Voltage U
Current I
i
Power P
i
Capacitance C
Inductance L
Note 1: FISCO parameters comply with the requirements for FISCO field devices in
GB3836.19-2010.
Note 2: [For Flowmeters] When Rosemount 644 Temperature Transmitter is used, the
Rosemount 644 should be used with Ex-certified associated apparatus to establish
explosion protection system that can be used in explosive gas atmospheres. Wiring and
terminals should comply with the instruction manual of both Rosemount 644 and
associated apparatus. The cables between Rosemount 644 and associated apparatus
22
T Temperature class
a
≤ +80 °C
a
≤ +65 °C
a
HART
30 V
i
200 mA
1 W
0.012 μF
i
0 mH
i
T5
T6
≤ +70 °C)
a
T code Temperature range
–60 °C ≤ T
T4
Fieldbus/PROFIBUS
30 V
300 mA
1.3 W
0 μF
0 mH
October 2016
≤ +70 °C
a