KROHNE OPTITEMP TT 51 EN - Manual (Page 46)

7
TECHNICAL DATA
46
TT 51 SERIES
www.krohne.com 09/2010 - 4000754201 - MA TT 51 R01 en
7.4 Temperature data for areas with potentially explosive atmospheres
In-head transmitter In-head transmitter In-head transmitter In-head transmitter
Non-incendive transmitter
Intrinsically safe transmitter
Rail-mount transmitter Rail-mount transmitter Rail-mount transmitter Rail-mount transmitter
Non-incendive transmitter
Intrinsically safe transmitter
Temperature class Ambient temperature T
a
T6 -40°C ≤ T
a
≤ +65°C / -40°F ≤ T
a
≤ +149°F
T5 -40°C ≤ T
a
≤ +80°C / -40°F ≤ T
a
≤ +176°F
T4 -40°C ≤ T
a
≤ +85°C / -40°F ≤ T
a
≤ +185°F
Temperature class Ambient temperature T
a
T6 -40°C ≤ T
a
≤ +60°C / -40°F ≤ T
a
≤ +140°F
T5 -40°C ≤ T
a
≤ +75°C / -40°F ≤ T
a
≤ +167°F
T4 -40°C ≤ T
a
≤ +85°C / -40°F ≤ T
a
≤ +185°F
Temperature class Ambient temperature T
a
T6 -20°C ≤ T
a
≤ +60°C / -4°F ≤ T
a
≤ +140°F
T5 -20°C ≤ T
a
≤ +70°C / -4°F ≤ T
a
≤ +158°F
T4 -20°C ≤ T
a
≤ +70°C / -4°F ≤ T
a
≤ +158°F
Temperature class Ambient temperature T
a
T6 -20°C ≤ T
a
≤ +50°C / -4°F ≤ T
a
≤ +122°F
T5 -20°C ≤ T
a
≤ +65°C / -4°F ≤ T
a
≤ +149°F
T4 -20°C ≤ T
a
≤ +70°C / -4°F ≤ T
a
≤ +158°F