Emerson 2120 Quick Start Manual page 19

December 2016
Lid: Aluminum Alloy (ASTM B85 360.0) or 316 SST
Probe:
316 Stainless Steel, or Alloy C276 (UNS N10276) and Alloy C (UNS N10002)
Probe filling: Perlite
Lid seal: Silicone
If the equipment is likely to come into contact with aggressive substances, it is
the responsibility of the user to take suitable precautions that prevent it from
being adversely affected, thus ensuring that the type of protection is not
compromised.
Aggressive substances – e.g. acidic liquids or gases that may attack metals or
solvents that may affect polymeric materials.
Suitable precautions – e.g. regular checks as part of routine inspections or
establishing from the material's data sheet that it is resistant to specific
chemicals.
The metallic alloy used for the enclosure material may be at the accessible
surface of this equipment; in the event of rare accidents, ignition sources due
to impact and friction sparks could occur. This shall be considered when the
level switch is installed in locations that specifically require Class 1, Div 1
equipment.
7. It is the responsibility of the user to ensure:
a. The voltage and current limits for this equipment are not exceeded.
b. That the joint requirements between the switch and the vessel tank are
compatible with the process media.
c. That the joint tightness is correct for the joint material used.
d. That only certified cable entry devices will be used when connecting this
equipment.
e. That any unused cable entries are sealed with suitably certified stopping
plugs.
8. The switch fork is subjected to small vibration stresses as part of its normal
function. As this provides a partition wall, it is recommended that the fork
should be inspected every 2 years for signs of defects.
9. Technical data:
a. Coding: Class 1, Div 1, Groups A, B, C, and D
b. Temperature:
2120*****E5Y**, 2120*****E5T**, 2120*****E6Y**, 2120*****E6T**
Temperature
classes
T6, T5, T4, T3, T2, T1
T5, T4, T3, T2, T1
T4, T3, T2, T1
T3, T2, T1
Minimum ambient air temperature (Ta) = –40 °C
Minimum process temperature (Tp) = –40 °C
Maximum ambient air
temperature (Ta)
°
75 C
°
70 C
°
65 C
°
50 C
Quick Start Guide
:
Maximum process
temperature (Tp)
°
75 C
°
95 C
°
125 C
°
150 C
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