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4.0 R EVIEWING
THE
F RONT B UTTONS
AND
D ISPLAY
8.8.8.8.8.8
PAR
KEY
PAR
?
?
DISPLAY MODE OPERATION
Access Programming Mode
No Function
No Function
PROGRAMMING MODE OPERATION
Store selected parameter and index to next parameter
Increment selected digit of parameter value
Select digit position in parameter value
5.0 S CALING
THE
M ETER
In many industrial applications, a meter is required to display the process
time of an operation or event. The pulses from a sensor are received by the
PAXLPT, and then scaled to produce just such a readout. The following formula
will help provide the scaling values to achieve the desired readout.
SF = DR x PPS
WHERE:
SF = Scale Factor
DR = Desired Readout*
PPS = Pulses per Second
To calculate the PPS multiply the RPM (Revolutions per Minute) by the PPR
(Pulses per Revolution) and divide by 60.
RPM x PPR
60
*For applications requiring a decimal point, select and program the
appropriate decimal point. When calculating the Scale Factor, use the whole
value of the number to be displayed, for example, 50.0 minutes, the Desired
Readout in this case is 500. Do not use decimal points in the Desired Readout
when calculating the scale factor.
For calculated SF values less than 59,999
If the Scale Factor is a value less than 59,999, it can be entered directly
into the meter as the Scale Factor and the Scale Multiplier can be left at 1.
For calculated SF values greater than 59,999
If the Scale Factor is a value over 59,999 (maximum value), the Scale
Multiplier must be used to reduce the calculated Scale Factor value until it is
less than 59,999. The Scale Multiplier divides the calculated Scale Factor
value by 1, 10, 100 and 1000, thus reducing the calculated value accordingly.
Select the appropriate Scale Multiplier value that allows the Scale Factor to
be a value under 59,999. Both the Scale Factor and Scale Multiplier can then
be entered into the meter.
6
Example 1 (6 Digit):
DR = 150 minutes
PPS = 450 RPM x 60 PPR
60
PPS = 450
SF = DR x PPS
SF = 150 x 450
SF = 67,500
Since the SF value is greater than 59,999, the SM will be needed to reduce
the calculated value to value less than 59,999. Using the SM of 10, the 67,500
value is divide by 10, reducing the SF to a value of 6750. The meter can be
programmed for a SF of 6750 and a SM of 10.
Example 2 (5 Digit):
DR = 2 hours and 23 minutes (2-23)
PPS = 138 RPM x 100 PPR
60
PPS = 230
To calculate the Scale Factor for a 5 Digit application, first convert the DR
to its base units.
DR = 2 (hours) x 60 + 23
DR = 120 + 23
DR = 143 minutes
SF = DR x PPS
SF = 143 x 230
SF = 32,890
Since the SF value is less than 59,999, it can be entered directly as the SF
and the SM will be 1. Note: When programmed for the 5 Digit mode, the
meter will convert the D.R. back to the hours and minutes format.
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