KROHNE BM 70A EEx EN User Manual
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07/2010 - 4000662402 MA BM70x-Ex-AD-R02-en
3.3.3.
BM 70..-Ex with flange system WS Category 2 (Zone 1)
For BM 70..-Ex level gauges with flange system WS…-2G, use only the product temperature to
establish the temperature class.
Standard-temperature version
Temperature Class
Maximum flange temperature
[°C]
T6
85
(1)
T5
100
(1)
T4 ... T1
130 (100)
(2) (3)
Boundary conditions: Ambient temperature 55°C
(1)
observe application limitation for measuring devices BM 702-Ex /
BM 702 A-Ex
(2)
Figures in brackets in conjunction with rod 2B
(3)
Where product temperature is > 100°C heat-resistant cable with continuous
service temperature of 80°C is required
Application limitation for measuring devices BM 702-Ex / BM 702 A-Ex
Temperature Class
Maximum flange
temperature [°C]
Maximum Ambient
temperature [°C]
T6
50
40
T5
90
40
High-temperature version with distance piece WS
Temperature Class
Maximum flange temperature
[°C]
T6
85
(1)
T5
100
(1)
T4
135 (100)
(2)
T3 ... T1
150 (100)
(2)
Boundary conditions: Ambient temperature 55°C
(1)
observe application limitation for measuring devices BM 702-Ex /
BM 702 A-Ex
(2)
Figures in brackets in conjunction with rod 2B
Application limitation for measuring devices BM 702-Ex / BM 702 A-Ex
Temperature Class
Maximum flange
temperature [°C]
Maximum Ambient
temperature [°C]
T6
75
40
T5
100
40