10
All new BA544D rate totalisers are supplied
calibrated as requested at the time of ordering.
If calibration information is not supplied, the
instrument will be conditioned for an open
collector input, with SCALE-r and SCALE-t set
to 1 and a timebase of seconds.
5.3 Summary of programmable functions
This section summarises all the programmable
functions. When read in conjunction with Fig 7
it provides a quick aid for programming the
instrument. If more detail is required, each
section contains a reference to a full
description of the function.
SUMMARY
Display
Description of function
‘UpdAtE’
Display update time
Allows the interval between
display updates to be selected.
Updating the display less
frequently lengthens battery
life.
See section 5.4
'InPut'
Type of input
Enables one of four types of
input to be selected:
‘UOLtS’
Voltage pulse
‘COIL’
Magnetic pick-off
‘ContACt’ Switch contact
‘OP.COL’ Open collector
See section 5.5
'd.P.'
Decimal points
Defines the position of the
decimal point in both the rate
and total displays and enables
the rate and total displays to
be interchanged.
See section 5.6
‘dISPLAY.2’ Lower display
Turns the lower display, which
normally shows rate, on or off.
See section 5.7
Display
Description of function
'SCALE-r' Rate Scale Factor
Defines the arithmetic relationship
between the pulse input frequency
and the rate display. May be
adjusted between 0.001 and
99999999.
When used with a flowmeter,
SCALE-r should be set to the
flowmeter K factor (pulses per unit
of measurement) if the display is
required in the same units as the
K factor.
See section 5.8
't-bASE'
Timebase
Selectable multiplier to display
flow rate in units per second, per
minute or per hour..
Select:
tb-1
for flow / second
tb-60
for flow / minute
tb-3600
for flow / hour
See section 5.9
'FILtEr'
Rate filter
Adjustable digital filter to reduce
noise on the rate display. Two
parameters each adjustable
between 0 and 9.
See section 5.10
'SCALE-t' Total Scale Factor
Defines the arithmetic relationship
between the number of input
pulses and the total display.
May be adjusted between 0.001
and 99999999.
When used with a flowmeter
SCALE-t should be set to the
flowmeter K factor (pulses per unit
of measurement).
See section 5.11
'CLIP-OFF' Clip off
To prevent the totalisation of very
low flow rates, clip-off enables the
user to select a flow rate below
which totalisation is inhibited.
See section 5.12
