KROHNE BM 70 M Series, Инструкция по установке и эксплуатации

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22 BM 70 M
6.2.4 Ambient temperature limits
Signal converter:
Measuring function OK, but LCD "freezes up"
Functional upper limit, for max. 2 hours
min. - 40°C (-40°F)
max. +70°C (+158°F)
Flange system:
see Section 6.2.3
6.2.5 Storage temperature
-20 ... +60°C (-4 ... +140°F)
6.2.6 Environment class
Locations exposed direct to open-air climate, D1 Severity in conformity with EN 60654-1
6.2.7 Protection category
Signal converter IP 66 / IP 67 (equivalent to NEMA 6)
6.2.8 Shock resistance
The device has been found to withstand the impact test in conformity with EN 61010, Section 8.2,
with 0.5 J energy, and the drop test to prEN 50178:1994.
6.2.9 Vibration endurance limit
Type test conditions acc. to “IACS”
6.2.10 EMC
The devices satisfy the requirements of EN 50081-1, EN 50082-2 and the NAMUR
Recommendation.
6.3 Product conditions
6.3.1 Physical properties of the products
Physical properties (such as density, viscosity, conductivity, relative permittivity, magnetic
properties, etc.) have no effect on measurement results.
The relative permittivity is merely required to have a minimum value in order to ensure reliable
measurements (see Section 6.3.2).