KROHNE BM 700 EN - Manual (Page 5)

BM 700 Installation and Operating Instructions Page 5
2.2 Mechanical installation
Hazardous-duty systems:
•
The BM 700 Ex is certified in conformity with European Standard for use in Zone
0, 1 and 2 hazardous locations (dependent on version).
•
Attention is drawn to the data and information given on the nameplate of the
converter, the nameplate of the flange and the specifications in the approval
certificates.
Safety:
•
Surface temperature: The housing of the signal converter can, in extreme
ambient conditions, have a temperature of more than 70°C (158°F)!
•
Check material compatibility of antenna, extension, flange, gaskets, and PP or
PTFE (used in all versions) with the product! See also section 8 "Type code"!
Mounting on the tank nozzle
a) Devices with horn antenna:
The antenna should project out of the nozzle. If necessary, use an antenna exten-
sion. Exception: in case of a symmetrical tank fitting.
Tank nozzle
Tank nozzle
Antenna
extension
Tank nozzle
b) Wave-Stick
Note the requirements imposed on nozzle diameter and nozzle length:
min. 50 mm
min. 235 mm
tank nozzle
dia. 40...55 mm
e.g. DN50 (2")
Version for
still wells
(1.57" to 2.17")