KROHNE BM 26 BASIC-ADVANCED ATEX EN - Manual (Page 7)

MEASURING CHAMBER
1
7
BM 26 BASIC/ADVANCED
www.krohne.com 12/2011 - 4000347102 - AD ATEX BM 26 Bas-Adv R02 en
Electrostatic discharge
Take the necessary antistatic precautions if you:
• handle,
• install or
• use
the device in potentially explosive atmospheres. Do not install in a location (near to ventilation
systems, for example) where the electrostatic charge can increase.
Special conditions
1.2.2 Operating conditions
The ATEX equipment category and temperature class give the ambient temperature range for
the measuring chamber. This data is marked on the nameplate of the measuring chamber.
Basic version (without electrical equipment)
The ATEX equipment category and temperature class give the ambient temperature and related
process temperature ranges for the device.
-40°C / -40°F is the minimum temperature for the Basic version of the magnetic level indicator.
Equipment categories II 1 G and 1/2 G
DANGER!
Risk of electrostatic discharge from the anti-freeze cover option. Make sure that all personnel
and equipment are correctly grounded.
WARNING!
The anti-freeze cover option is possible source of ignition in a potentially explosive atmosphere.
It covers the glass tube of the indicator column. Clean the anti-freeze cover option only with a
damp cloth.
WARNING!
Steel objects will not hit a float made of titanium in the stainless steel measuring chamber. If you
must install the float in the measuring chamber or service the device, make sure that you do not
hit titanium floats with a steel or rusty steel tool (hammer etc.) or other object.
WARNING!
Maximum rate of change in level must not be more than 1 m/s / 3.3 ft/s.
Temperature class Maximum ambient
temperature
Maximum process
temperature
[°C] [°F] [°C] [°F]
T6 +68 +154 +68 +154
T5 +80 +176 +80 +176
T4 +80 +176 +108 +226
T3 +80 +176 +160 +320