23
OPTIMASS 3300C / 7300C with stainless steel converter housing and without
heating jacket / insulation
Ambient
Temp. T
amb
°C
Max. medium
temp. T
m
°C
Temperature Class Max. Surface Temp. °C
40
55 T6 T80
75 T5 T95
120 T4 T130
150 T3 – T1 T160
50
75 T5 T95
115 T4 T130
135 T3 – T1 T145
55 55 T4 – T1 T80
OPTIMASS 3300C / 7300C with aluminium converter housing and with heating
jacket / insulation
Ambient Temp.
T
amb
°C
Max. medium
temp. T
m
°C
Temperature Class
Max. Surface
Temp. °C
40
55 T6 T80
70 T5 T95
100 T4 T125
145 T3 – T1 T170
50
70 T5 T95
100 T4 – T1 T125
60 60 T4 – T1 T85
65* 65 T4 – T1 T90
OPTIMASS 3300C / 7300C with stainless steel converter housing and with heating
jacket / insulation
Ambient Temp.
T
amb
°C
Max. medium
temp. T
m
°C
Temperature Class
Max. Surface
Temp. °C
40
55 T6 T80
70 T5 T95
100 T4 T125
145 T3 – T1 T170
50
70 T5 T95
75 T4 – T1 T100
55 55 T4 – T1 T80
* Only for equipment configurations according to the table in section 2.2
The cable supplied by KROHNE is designed for a continuous working temperature of up to
105°C. Alternative cabling must be a heat-resistant type with a minimum continuous working
temperature of 80°C.
AD OPTIMASS 300_010 Haz Areas Rev 01.qxp 05/03/2014 13:25 Page 23