DPM-500 Analog Input Meter Instruction Manual
41
Signal Input Conditioning (
Functn
)
The
Function
menu is used to select the signal input conditioner applied to the input: linear, square root,
programmable exponent, or round horizontal tank volume calculation. The 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 can be used to linearize the signal from a differential pressure transmitter and
display flow rate in engineering units.
Programmable Exponent Linearization (
Prog E
)
The programmable exponent can be used to linearize the signal from level transmitters in open-channel
flow applications using weirs and flumes.
Multi-Point Linearization (
Linear
)
Meters are set up at the factory for linear function with 2-point linearization. Up to 32 linearization points
can be selected for PV1 under the linear function. The multi-point linearization can be used to linearize
the display for non-linear signals such as those from level transmitters used to measure volume in odd-
shaped tanks or to convert level to flow using weirs and flumes with complex exponent.
If the dual-scale level feature has been selected, the menus for PV1 & PV2 are enabled. PV2 can be
programmed with up to 8 linearization points.
Round Horizontal Tank Linearization (
rHt
)
This function automatically calculates the volume in a round horizontal tank with flat ends.
Set the display for the desired decimal point and engineering units before entering the round horizontal
tank function. Select units, inches or cm for the tank dimensions. Enter the diameter and the length in
inches and the results are calculated automatically in US gallons.
The meter can be scaled to display the volume in any engineering unit.
Note: After Scale is displayed continue pressing the Enter button until the meter completes the scaling of
the input and display values.
rht
rht
rht
