KROHNE BM 26 BASIC_ADVANCED EN - Manual (Page 54)

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TECHNICAL DATA
54
BM 26 BASIC/ADVANCED
www.krohne.com 10/2012 - 4000347004 - HB BM26 Basic/Adv R04 en
Fieldbus modules
Approvals and certifications
CE This device fulfils the statutory requirements of the EC directives.
The manufacturer certifies successful testing of the product by
applying the CE mark.
Explosion protection Explosion protection Explosion protection Explosion protection
ATEX - without LCD indicator II 1 G Ex ia IIC T4...T6 II 1 G Ex ia IIC T4 or T6
ATEX - with LCD indicator II 1 G Ex ia IIC T5 -
Other standards and approvals Other standards and approvals Other standards and approvals Other standards and approvals
EMC Electromagnetic Compatibility
Directive 2004/108/EC in
conjunction with EN 61326-1
(2006)
Electromagnetic Compatibility
Directive 2004/108/EC in
conjunction with EN 61326-1
(2006)
NAMUR NE 21 3
Vibration resistance Vibration class 4M4 according to EN 60721-3-4
NAMUR NAMUR NE 43 4
1 If the operating temperature is not in these limits, the display switches off. The transmitter module continues to oper-
ate above and below this temperature range.
2 This value is programmable
3 Electromagnetic Compatibility of Industrial and Laboratory Control Equipment
4 Standardization of the Signal Level for the Failure Information of Digital Transmitters
Module output FOUNDATION™ Fieldbus PROFIBUS PA
Order code xF45xDxxxxx (PR) xF45xXxxxxx (PR)
Measuring system
Measuring principle A reed resistor chain that is magnetically actuated by a magnetic
float in the BM 26 measuring chamber
Primary measured value Resistance
Secondary measured value Level and volume of the liquid in the measuring chamber
Design
Description of device Resistance reed chain with 2-wire loop-powered transmitter module
attached adjacent to the measuring chamber of the bypass level
indicator. Changes in resistance are converted to an output signal via
a transmitter module.
Description of transmitter
module
Changes in resistance are
converted to signals that agree
with the FF communication
protocol.
Changes in resistance are
converted to signals that agree
with the PROFIBUS PA
communication protocol.
Options Converter position 1
Accessories SU 600 power supply unit 24 V
Module output 4...20 mA 4...20 mA / HART®
Order code xF45xBxxxxx
(without LCD indicator)
xF45xExxxxx
(with LCD indicator)
xF45xWxxxxx
(without LCD indicator)
xF45xGxxxxx
(with LCD indicator)