Helios PD2-6200 Analog Input Flow Rate/Totalizer
Instruction Manual
45
Round Horizontal Tank
Linearization (
rHt
)
This function automatically calculates the volume in a
round horizontal tank with flat ends. This function is
only used when
Total
is set to
no
.
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
dimension. Enter the diameter and the length in
inches and the results are given in US gallons. Enter
the diameter and length in cm and the results are
calculated automatically in liters.
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.
Changing the Volume from Gallons to Liters
In the above graphic, entering the 48" for the diameter
and 120" for the length of the round horizontal tank,
the meter automatically calculates that the volume of
the tank is 940.02 gallons.
1. Convert gallons to liters
1 US gallon = 3.7854 L
940.02 gal = 3558.4 L
2. Go to the
Setup
menu and change the decimal
point to 1 decimal.
3. Go to the
Program
–
Scale
menu and press Enter
until
dis 2
is shown on the main display.
4. Press Enter and change the display 2 value to
3558.4.
5. The meter is now displaying the volume in liters.
Note: The display can be scaled to display the volume
in any engineering units.
Another way to display the volume in liters is to enter
the dimensions in cm. The meter automatically
calculates the volume in liters.
Low-Flow Cutoff (
CutofF
)
The low-flow cutoff feature allows the meter to be
programmed so that the often-unsteady output from a
differential pressure transmitter, at low flow rates,
always displays zero on the meter.
The cutoff value may be programmed from 0.1 to
999999. The meter will display zero below the cutoff
value. Programming the cutoff value to zero disables
the cutoff feature. The cutoff can be disabled to
display negative values.
Totalizer Count Up/Down (
Count
)
The totalizer count up/down menu may be used to
program the total and grand total to either count up
from 0 when reset or count down from a programmed
value when reset. Total and grand total may have
their countdown numbers programmed individually
from 0 to 999999.
Analog Output Programming
(
AoutPr
)
The
Analog Output Programming
menu is used to
program the behavior of the 4-20 mA output. The
following parameters and functions are programmed
in this menu:
1. Source: Source for generating the 4-20 mA
output (e.g. PV)
2. Overrange: Analog output value with display in
overrange condition
3. Underrange: Analog output value with display in
underrange condition
4. Break: Analog output value when loop break is
detected
5. Max: Maximum analog output value allowed
regardless of input
6. Min: Minimum analog output value allowed
regardless of input
7. Calibrate: Calibrate the internal 4-20 mA source
reference used to scale the 4-20 mA output
