AW Gear Meters RT-10 - Manual (Page 18)

RT‐10 Flow Monitor
Operation and Programming Manual
17
Max. Gate Time vs Frequency
0
100
200
300
400
500
600
700
0 500 1000 1500 2000 2500 3000
Hz
Se
c
o
n
d
s
D ISPLA YS
B RIEFLY
EN TER TIM E IN SEC ,
FO R UPD A TE O F
D ISPLA Y A N D
A N A LO G.
GA TE TIM E (UPD A TE) FO R RA TE
TIM E B A SE FO R RA TE
EN T
EN T
EN T
SEL
EN T
HO LD
3 SEC .
H O LD EN T
1 SEC
1 SEC
EN T
SEL
SEL
SEL
TO TO TA L
D ISPLA Y
M O D E
D ISPLA YS
B RIEFLY
1 SEC
M O D E
FRO M C LO C K O R TO TA L D ISPLA Y
value is 3 seconds. The maximum allowable Gate time depends on the expected maximum input
frequency and is determined by the formula:
Maximum gate time (seconds) = 65,535 counts/maximum frequency in Hz
To calculate the maximum frequency, use the formula:
Maximum flow rate (engineering unit/sec) X K‐factor (pulses/engineering unit) = frequency in Hz
The maximum gate time value versus frequency is represented in the following graph.
When editing the Gate Time variable, the leftmost digit will blink (cursor). Use SEL to move the cursor to
the right; the cursor wraps around. Use UP or DN to increment or decrement numerals. Edit the decimal
point last. Use DN to move the decimal point to the right, UP to move it to the left. When the desired
value displays, use ENT to store the value and exit or advance to the next variable.