Maximum Temperatures - Emerson Hytork XL Series Safety Manual

Safety Guide
DOC.SG.HX.1 Rev. 1
5.3
Instructions for Use in Explosive Areas
Section 5: Instructions for Use in Explosive Areas

Maximum Temperatures

!
WARNING
The actuators surface temperature is dependent upon process operating
conditions. If the actuator's surface temperature exceeds the acceptable
temperature for the hazardous area classification, it can catch fire or in worst
case can explode causing personal injury and property damage. To avoid
an increase of instrumentation and/or accessory surface temperature due
to process operating conditions, ensure adequate ventilation, shielding, or
insulation of these actuator components installed in a potentially hazardous or
explosive atmosphere.
Table 3. Temperature range for (potential) explosive areas
Temperature
Ambient Range ATEX Class
-20 °C to +75 °C
-20 °C to +80 °C
-20 °C to +80 °C T1 to T4
-20 °C to +75 °C
-20 °C to +90 °C
-20 °C to +120 °C T1 to T4
-40 °C to +75 °C
-40 °C to +80 °C
-40 °C to +80 °C T1 to T4
-20 °C to +250 °C
for 2 hours
Note:
1. The actual maximum surface temperature depends not on the equipment itself,
but mainly on operating conditions like e.g. the temperature of the supply media.
2. The specified values are valid with the following conditions:
— Maximum working frequency of the actuator is 1 Hz at a maximum of 50 cycles
per hour and at maximum load.
TX (ATEX Surface
Temperature)
T6 T85 °C (185 °F)
T5 T90 °C (194 °F)
T90 °C (194 °F)
T6 T85 °C (185 °F)
T5 T100 °C (212 °F)
T130 °C (266 °F)
T6 T85 °C (185 °F)
T5 T90 °C (194 °F)
T90 °C (194 °F)
T2 T260 °C (500 °F)
November 2022
Valid for Actuator Model
Standard temperature
models
High temperature models
Low temperature models
Tunnel application models
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