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6
CONFIGURATION – ADVANCED LEVEL…
6.4
Advanced Level – Totalizer Function
6.4.1
Introduction to Totalization
Information.
• Six 8-digit totalizers which can be assigned to any channel or math result.
• Count up or count down.
• Count rates – from 0.001 to 10.0 counts/second.
• External counter pulse – can be used to energize relays or digital outputs (a maximum of 4 pulses per second are
generated).
• Wrap function – with external wrap pulse used to energize relays or digital outputs.
• Programmable preset and predetermined count values – for (batch) flow total.
• Adjustable cut-off values.
• Operator level reset and stop/go.
• Digital signal reset and stop/go.
The totalizer option provides indication and recording of flow rates from input signals with linear, square law or power law
characteristics. More than one totalizer can be allocated to a channel and these may be switched on or off as required.
The flow total for any channel can be viewed on the digital display and reset using the front panel keys and/or a digital signal. An
additional internal ‘Secure’ total is also provided which can be reset only after gaining access to the
Advanced Configuration Level
.
External counters with their own power supplies can be driven using relay and digital output module options.
Converting the Engineering Flow Rate – Example A and B
To calculate the count rate high the engineering flow rate high must first be converted into units per second. The engineering range
(display range) value is limited to 9999. In some circumstances the engineering flow rate high value may be greater than 9999 and the
engineering range must therefore be scaled. In the calculation of units/second the actual engineering flow rate high value must be
used.
Max. flow rate in Units/Second =
Actual Engineering Flow Rate High
Engineering Range Units (in seconds)
Calculating the Count Rate High – Example A and B
The totalized decimal point allows the totals to be scaled between 10
-8
and 10
0
ie. .00000000
and 00000000
with multiplication
factors of x 10 and x 100 giving 00000000
0
and 00000000
00
; the latter two increase in increments of tens or hundreds respectively.
Count Rate High =
units/second
Must be within the limits of 10.0 to 0.001 pulse per second
counter factor
