Quick Start Guide
21
March 2018
Standards: 3051S: GB3836.1-2010, GB3836.2-2010, GB3836.20-2010,
GB12476.1-2013, GB12476.5-2013
3051SFx: GB3836.1-2010, GB3836.2-2010, GB3836.20-2010,
GB12476.1-2013, GB 12476.5-2013
Markings: 3051S: Ex d IIC T6…T4; Ex tD A20 T 105 °C T
500
95 °C; IP66
3051SFx: Ex d IIC T5/T6 Ga/Gb; DIP A20 T
A
105 °C; IP66
3051S-ERS: Ex d IIC T4 ~ T6 Ga/Gb
Special Conditions for Safe Use (X):
1. Only the pressure transmitters, consisting of Rosemount 3051SC Series, 3051ST
Series, 3051SL Series and 300S Series, are certified.
2. Flameproof joints are not intended for repair.
3. The ambient temperature range for the 3051S and 3051SFx in a dust environment is
(
–20 °C ≤ T
a
≤ 85 °C).
4. The relation between temperature class and maximum temperature of process
medium is as follows:
5. The earth connection facility in the enclosure should be connected reliably.
6. During installation, use and maintenance of transmitter, observe the warning
“Don’t open the cover when the circuit is alive”.
7. During installation, there should be no mixture harm to flameproof housing.
8. Cable entry, certified by NEPSI with type of protection Ex d IIC in accordance with
GB3836.1-2000 and GB3836.2-2000, should be applied when installation in
hazardous location. Five full threads should be in engagement when the cable entry
is assembled onto the transmitter. When pressure transmitter is used in the
presence of combustible dust, the ingress of protection of the cable entry should be
IP66.
9. The diameter of cable should observe the instruction manual of cable entry. The
compressing nut should be fastened. The aging of seal ring should be changed in
time.
10. Maintenance should be done in non-hazardous location.
11. End users are not permitted to change any components inside.
12. When installation, use and maintenance of transmitter, observe following
standards:
GB3836.13-1997 “Electrical apparatus for explosive gas atmospheres Part 13:Repair
and overhaul for apparatus used in explosive gas atmospheres”
GB3836.15-2000 “Electrical apparatus for explosive gas atmospheres Part 15:
Electrical installations in hazardous area (other than mines)”
GB50257-1996 “Code for construction and acceptance of electric device for
explosion atmospheres and fire hazard electrical equipment installation
engineering”
GB15577-1995 “Safe regulation for explosive dust atmospheres”
GB12476.2-2006 “Electrical apparatus for use in the presence of combustible dust –
Part 1-2: Electrical apparatus protected by enclosures and surface temperature
limitation – Selection, installation and maintenance”
Table 2. Rosemount 3051S
Temperature class Ambient temperature (°C) Process temperature (°C)
T6 –60 °C ≤ T
a
≤ +70 °C –60 °C ≤ T
a
≤ +70 °C
T5 –60 °C ≤ T
a
≤ +80 °C –60 °C ≤ T
a
≤ +80 °C
T4 –60 °C ≤ T
a
≤ +80 °C –60 °C ≤ T
a
≤ +120 °C
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