KROHNE OPTISONIC 3400 Quickstart EN - Manual (Page 15)

INSTALLATION
2
15
OPTISONIC 3400
www.krohne.com 11/2013 - QS OPTISONIC 3400_4002741202_R02-en
2.13 Down going pipeline over 5 m /16 ft length
Install air vent downstream of the flowmeter to prevent vacuum. Although this will not harm the
meter, it may cause gases to come out of solution (cavitate) and interfere with proper
measurements.
2.14 Insulation
For devices used in hazardous area, additional maximum temperature and insulation
precautions apply. Please refer to the Ex documentation!
Figure 2-14: Down going pipeline over 5 m / 16 ft length
1 ≥ 5 m / 16 ft
2 Install air vent
Figure 2-15: Insulation
1 Connection box
2 Insulation area
WARNING!
The flow sensor can be insulated completely, except for the connection box.
(Ex: maximum temperature, refer to Ex supplement)