P-46 maximum flowrate
this is the flowrate which occurs at maximum head and determines the mA
output span (refer to Section V, Analog Output). Obtain from
manufacturer’s specifications.
enter “max. flowrate”, volume units are arbitrary (F=1000)
P-47 auto zero
this parameter allows automatic zero calibration for the empty distance
to transducer parameter (P-3) when that physical measurement is not ob-
tainable.
P-3 is the estimated empty distance to the transducer face
with the transducer aimed at the proper portion of the crest in the open
channel and at a height of at least 1 ft above maximum head
press at least five times and until a stable reading is obtained on the
display. The reading, regardless of the height of the transducer, will be
the apparent head with respect to the estimated empty distance, P-3.
enter the actual physical measurement of head at a point beneath the
transducer
press , the HydroRanger I will then calculate the correct zero
reference level, the offset will be automatically entered into P-62.
P-48 OCM low head cutoff
flows for head below this level will not be totalled. Unit of cutoff
is percent of maximum head (P-45)
enter “percentage required” (F=5.000)
P-49 OCM decimal point
sets the maximum number of digits after the decimal for display of flowrate
(P-39 = 4). The number of digits after the decimal will automatically
reduce to avoid display overflow.
enter 0 = no digits after decimal
1 = one digit after decimal
2 = two digits after decimal (F)
3 = three digits after decimal
P-50 OCM mA output
refer to Section V, Analog Output
enter 1 = mA responds to head (F)
2 = mA responds to flow
MEAS
ENTER
PL-399 7 – 9
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