10. Maintenance should be done in a non-hazardous location.
11. During installation, use and maintenance of this product, observe the
following standards: GB3836.13-2013, GB3836.15-2000,
GB3836.16-2006, GB50257-2014
I3 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
a
≤ +70 °C)
Special Conditions for Safe Use (X):
1. Symbol “X” is used to denote specific conditions of use:
2. If the apparatus is fitted with an optional 90 V transient suppressor, it
is not capable of withstanding the 500 V insulation test for 1 minute.
This must be taken into account when installing the apparatus.
3. The enclosure may be made of aluminum alloy and given a protective
polyurethane paint finish; however, care should be taken to protect it
from impact or abrasion if located in Zone 0.
4. The relation between T code and ambient temperature range is:
Model
T code
Temperature range
HART, Fieldbus, PROFIBUS, and Low Power T4
–60 °C ≤ T
a
≤ +70 °C
5. Intrinsically Safe parameters:
Parameter
HART
Fieldbus/PROFIBUS
Voltage U
i
30 V
30 V
Current I
i
200 mA
300 mA
Power P
i
1 W
1.3 W
Capacitance C
i
0.012 μF
0 μF
Inductance L
i
0 mH
0 mH
Note
FISCO parameters comply with the requirements for FISCO field
devices in GB3836.19-2010 [For Flowmeters] When Rosemount 644
Temperature Transmitter is used, the transmitter 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
Quick Start Guide
February 2019
36
Rosemount 2051 Pressure Transmitter Quick Start Guide
