APG DCR-1004 user manual - Manual (Page 26)

DCR-1003 and DCR-1004 Rev. A3, 10/08
26
Automation Products Group, Inc.
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VOLUME
A very popular use for the DCR-1003, 1004 is to do volumetric conversions
for the amount of product in a tank. If 0 is selected as the tank type , the zero
point is at the DST, and the display will show the distance to the product. If
tank type 1 - 5 are selected, the zero point is the bottom of the tank, and the
display will show how much product is in the tank.
MODE DESCRIPTION PARAMETERS EXPLANATION
29 Tank Type Range = 0 - 5 Selects the type of tank
0 - distance to level to be monitored
1 - level indication Set by NUM UP or NUM DN
2 - horizontal flat ends
3 - horizontal with
spherical ends.
4 - spherical tank
5 - conical bottom
Default = 0
Converting the output into units of volume other than (ft. 3 ), (in. 3 ) ,or (m 3 )
(determined in mode 1) is often preferred. To accomplish this, a conversion
factor needs to be entered into modes 30 and 31. For example, converting the
output from cubic inches to liters requires a conversion factor of 0.0164 (1 in.
3
= 0.0164 liters). If you are using tank type 1, you must multiply the area of
the bottom of the tank by the conversion factor and enter the result into modes
30 and 31. For example, if you have a flat-bottom tank (type1) with a diameter
of 110 in, you must first figure the area of the tank bottom. (Area of a circle = tt
x r
2 ) 3.1415 x 55 2 = 9503.0375 IN 2 . The area is then multiplied by a conversion
factor. 9503.0375 x 0.0164 = 155.8498. This is the number you would enter
into modes 30 and 31. This is only necessary with tank type 1. If one of tank
mode 2-5 is selected, then the only the conversion factor needs to be entered in
modes 30 and 31. For example, to convert from (ft.
3 ) to gallons will require a
conversion factor of 7.4805 (1 ft. 3 = 7.4805 gallons) to be entered into modes
30 and 31. Using the values entered in modes 30-35, along with the measured
distance to the level, the DCR calculates the volume in gallons.
30 Constant Above Range = 0 - 9999 Sets the portion of the multiplier
Decimal Point Default = 1 above the decimal point. Used
for converting between units of
volume. The relay and analog
outputs must be programmed in
the same units used here.
31 Constant Below Range = .0000 - .9999 Sets the portion of the multiplier