8.5 Guarantee
Instruments which fail within the guarantee period
should be returned to BEKA associates or our local
agent. It is helpful if a brief description of the fault
symptoms is provided.
8.6 Customer comments
BEKA associates is always pleased to receive
comments from customers about our products. All
communications are acknowledged and whenever
possible, suggestions are implemented.
9. ACCESSORIES
9.1 Scale card
The BA558E Rate Totaliser has a window on the
right hand side of the display through which a scale
card showing the units of measurement such as
m/sec, Galls., m
3
/hour can be viewed. New
instruments are fitted with a scale card showing the
units of measurement specified when the Rate
Totaliser was ordered, if the units are not specified
a blank scale card will be fitted. A pack of scale
cards pre-printed with common flow units of
measurement is available as an accessory. These
can easily be fitted on-site to the BA558E without
opening the instrument enclosure or removing it
from the panel, see section 4.4 of this instruction
manual.
Custom scale cards for applications requiring less
common units of measurement are also available.
9.2 Tag information
New Rate Totalisers are supplied with the tag or
application information specified when ordered
thermally printed onto the rear panel adjacent to
the terminals. This tag information is not visible
from the front of the instrument after installation.
9.3 Alarms
CAUTION
These alarms outputs should not be used
for critical safety applications such as an
emergency shut down system.
The BA558E Rate Totaliser can be supplied with
factory fitted dual alarms with solid state, single
pole outputs. Each output may be independently
configured as a rate or total, high or low alarm with
a normally open or normally closed output in the
non-alarm condition.
When the 4/20mA current powering the Rate
Totaliser is removed both alarm outputs will open
irrespective of configuration. The open circuit
condition should therefore be chosen as the alarm
condition when designing an alarm system.
Fig 11 illustrates the conditions available and
shows which are fail safe.
When an alarm occurs an alarm annunciator on
the Rate Totaliser display is activated and if
required the rate or total display causing the alarm
can alternate between the measured value and the
alarm channel identification ‘ALr1’ or ‘ALr2’.
Fig 11 Alarm outputs
Configurable functions for each alarm include
activation from rate display or total display,
adjustable setpoint, hysteresis, alarm delay and
alarm silence time.
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