YZ Systems Milton Roy • 201 Ivyland Road • Ivyland, Pennsylvania • USA • 18974 • P: 281.362.6500 • www.yzsystems.com
Page 45
NJEX EUR ver. 08-2021
Section 7: Calibrating Signal Inputs
Calculation for Determining the Span Frequency
Pulse x max flow rate CF =
Pulses
CF
Hr
Hr
As determined by the flow metering device
Example:
1 pulse x 1,000,000CF = 100,000 pulses/hr
10CF
Hr
Since pulses per hour is not an option for programming the N-300G divide by
60 minutes per hour to obtain pulses per minute.
100,000 pulses x
1Hr
= 1,666.7 pulses/min.
Hr
60 min.
Since a maximum of 100 pulses per minute may be programmed into the
N-300G, you must now divide by 60 seconds per minute to obtain pulses per
second, if this value had calculated to less than 100 pulses per minute it could
have been programmed into the N-300G.
1,666.7 pulses
x 1 min. =
27.7 pulses/sec.
min.
60 sec
Select PPS and set the span to 28 pulses per second.
Figure 113
Summary of Contents for NJEX 6300G
Page 1: ...NJEX 6300G 7300G N A T U R A L G A S O D O R I Z A T I O N S Y S T E M...
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Page 3: ...NJEX 6300G 7300G Instruction Operating Manual Version 08 2021...
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