Rosemount 2120 - Page 20

August 2012
20
Quick Start Guide
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**:
Minimum ambient air temperature (Ta) = –40 °C
Minimum process temperature (Tp) = –40 °C
c. Pressure: Must not exceed the rating of the coupling/flange fitted.
d. For electrical details and pressure ratings, see the 2120 Product Data Sheet
00813-0100-4030 or Reference Manual 00809-0100-4030.
10. Cable selection:
a. It is the responsibility of the user to ensure that suitably temperature rated cable
is used. The table below is a guide to selection:
Temperature
Classes
Maximum Ambient Air
Temperature (Ta)
Maximum Process
Temperature (Tp)
T6, T5, T4, T3, T2, T1
75 °C 75 °C
T5, T4, T3, T2, T1
70 °C 95 °C
T4, T3, T2, T1
65 °C 125 °C
T3, T2, T1
50 °C 150 °C
T Class Cable Temperature Rating
T6 Above 185 °F (85 °C)
T5 Above 212 °F (100 °C)
T4 Above 275 °F (135 °C)
T3 Above 320 °F (160 °C)