PD2-6262 Helios Large Display Analog Dual-Input Rate/Totalizer Instruction Manual
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Select Menu (
SElect
)
The
Select
menu is used to select the signal input conditioning function applied to the inputs (linear,
square root, or programmable exponent), math function for A & B, constants, low-flow cutoff, total count
direction (up or down from a preset amount), and analog output programming. Multi-point linearization is
part of the linear function selection.
Signal Input Conditioning (
Functn
)
The
Function
menu is used to select the input-to-output transfer function applied to the input signal:
linear, square root, programmable exponent, or round horizontal tank volume calculation. Multi-point
linearization is part of the linear function selection.
Meters are set up at the factory for linear function with 2-point linearization. The linear function provides a
display that is linear with respect to the input signal.
Square Root Linearization (
Square
)
The square root function is used to calculate flow measured with a differential pressure transmitter. The
flow rate is proportional to the square root of the differential pressure. Scale the meter so that the low
input signal (e.g. 4 mA) is equal to zero flow and the high input signal (e.g. 20 mA) is equal to the
maximum flow.
