7
ATEX: SUPPLEMENTARY INSTRUCTIONS
116
OPTIFLEX 1300 C
www.krohne.com
01/2008 • 4000172301 - HB OPTIFLEX 1300 R02 en
Time necessary to de-energize an Ex d [ia]-approved instrument
How to close the terminal compartment
1
Attach the terminal compartment cover
2
.
i
Turn the terminal compartment cover carefully to prevent damage to the thread and the
gasket.
2
Make sure that the terminal compartment cover is tight.
3
Attach the cover stop
1
.
i
Use a 3 mm allen wrench.
4
Make sure that the cover stop
1
screw is tight.
7.3.3 Terminal tightening capacity
The terminal tightening capacity for terminals 1 and 2 is:
7.3.4 EEx ia equipment
How to connect the electrical cables
Temperature class
Time to de-energize the Ex d [ia]-approved instrument
[minutes]
T6
20
T5
10
T4, T3
Not necessary
WARNING!
Ex d [ia] applications: obey the instructions that follow:
Type of wire
Terminal tightening capacity
[mm
²
]
[inches
²
]
Rigid
4
0.0062
Flexible
2.5
0.0039
INFORMATION!
•
Cable entries are supplied on customer demand. If you supply the cable entries, this part
must have a degree of ingress protection IP
≥
6x (EN 60529).
HB_OPTIFLEX1300_EN_D4_080428.book Page 116 Tuesday, April 29, 2008 2:47 PM