7
Once within the programme menu the required
parameter can be reached by scrolling through the
main menu using the
Up
and
Down
push-buttons
as shown in Fig 6.
When returning to the display
mode following recalibration or changes to any
parameters, the indicator will display circulating
minus signs for a few seconds while the new
information is stored in permanent memory.
All new BA526C indicators are supplied calibrated
as requested at the time of ordering. If calibration
is not requested, the digital indicator will be
calibrated to display 0.00 to 100.00 for 4 to 20mA
input.
5.1
Summary of programmable functions
This section summarises all of the programmable
functions and when read with Fig 6 provides
sufficient information to condition and calibrate the
indicator. A cross-reference to a more detailed
description is given for each function.
Display Description of function
'root'
Square root extractor
Turns the square root extractor for
linearising the output from differential
flowmeters 'On' or 'OFF'.
See section 5.2
'dSPL'
Digital display
Turns the 4½ digit display 'On' or 'OFF'.
See section 5.3
'rESn'
Display resolution & dummy zero
Selects the resolution of the least
significant display digit. May be set to
1, 2, 5 or 10 digits.
See section 5.4
'dZErO' Dummy trailing zero
Activates a dummy zero after the 4½
digit display so that larger number may
be displayed.
See section 5.5
'd.P.'
Decimal point
Positions a dummy decimal point
between any of the digits or turns it off.
See section 5.6
Display Description of function
'bAr'
Bargraph display
Selects a column or single segment
display, and defines whether the input
current is displayed on the left hand or
on both 100 segment bargraphs.
See section 5.7
'CAL'
Calibration
of
displays
using
external current source.
Enables the zero and span of
the
digital indicator to be adjusted using an
external current source such as a
calibrator. The analogue bargraph is
linked to the digital display and is
automatically calibrated at the same
time.
When performed with an accurate
traceable current source, this is the
preferred method of calibration.
See section 5.8
'SEt'
Calibration of display using internal
references.
Enables the zero and span of the digital
indicator to be adjusted without the
need for an accurate input current or
disconnection from the 4/20mA loop.
The analogue bargraph is linked to the
digital display and is automatically
calibrated at the same time.
See section 5.9
'Cond'
Indicator conditioning
This function provides access to a
password protected sub-menu enabling
the internal references to be calibrated,
and the mains (line) frequency rejection
to be selected.
See section 5.10
CAUTION
Do not attempt to change the
frequency of the mains (line) filter
frequency or recalibrate the internal
references without reading section
5.10 of this manual
Summary of Contents for BA526C
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