ProtEX-MAX PD8-6060 Explosion-Proof Dual-Input Meter Instruction Manual
52
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 Upper 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.
Math Function (
math
)
The
Math
menu is used to select the math function that will determine the channel C value. These math
functions are a combination of input channels A and B, and will display when channel C is selected in the
Display
menu.
The following math functions are available.
Function
Display
Description
Sunm
Sum
Channel C = (A+B+P)*F
Dif
Difference
Channel C = (A-B+P)*F
difabs
Absolute difference
Channel C = ((Absolute value of (A-B))+P)*F
Avg
Average
Channel C = (((A+B)/2)+P)*F
nmulti
Multiplication
Channel C = ((A*B)+P)*F
Divide
Divide
Channel C = ((A/B)+P)*F
Hi-ab
Max of A or B
C = ((High value of channel A or B)+P)*F
Lo-ab
Min of A or B
C = ((Low value of channel A or B)+P)*F
Drauw
Draw
Channel C = ((A/B)-1)*F
uwAvg
Weighted avg.
Channel C = ((B-A)*F)+A
ratio
Ratio
Channel C = (A/B)*F
Ratio2
Ratio 2
C = ((B-A)/A)+P)*F
Concen
Concentration
Channel C = (A/(A+B))*F
Math Constants (
Const
)
The
Math Constants
menu is used to set the constants used in channel C math. The math functions
include input channel A and B, as well as the adder constant P, and factor constant F.
The
Adder
constant (P) may be set from -99.999 to 999.999.
The
Factor
constant (F) may be set from 0.001 to 999.999.
The chart on page 52 details the math functions that may be selected in the
Math Function
menu.
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 to 999999. The meter will display zero below the cutoff
value. Programming the cutoff value to zero disables the cutoff feature.
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