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ES2 Electronic Liquid Level Transmitter
EX-1832
Calculating Milliamp Output
The King-Gage Electronic Sensor is factory-calibrated to
nominal range only. Since there is no appreciable degree
of span adjustment, the milliamp output of the sensor at
full tank level will generally be less than 20.00 mA.
Actual output can be calculated based on total tank depth
and specific gravity of the liquid product:
(
B
-
A
) x
C
= Tank Pressure
27.6807
where ...
A
= Reserve (inches of depth from low point of tank
to sensor)
B
= Full Tank (inches of depth from low point of tank
to full)
C
= Specific Gravity of Tank Contents
Now, using the calculated tank pressure from above, the
actual milliamp value at full can be determined:
(16 x Tank Pressure) + 4 = mA Output
NOMINAL psig RANGE
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MODEL/RANGE
5701-1-15 PSIG
Sensor
Assembly
B
A
Tank
Milk
1.032 sp. gr.
Example - mA Output Calculation for Tank Gauging
Application
The following example shows how the milliamp output of
the sensor at full tank can be calculated. The “Reserve”
represents the distance from the lowest point on the
bottom of the tank to the installed sensor. “Full” is the level
of contents at which the tank is filled to capacity. The liquid
contents of the tank is milk @ 1.032 sp.gr. The sensor
installed is a nominal 15 psig range model.
C
= 1.032 (specific gravity)
B
= 400 in. (full level)
A
= 28 in. (reserve)
(400 - 28) x 1.032 = 13.87 psig
27.6807
(16 x 13.87) + 4
= 18.79 mA
15 PSIG
3201 South State St., Ann Arbor, Michigan 48108-1625 U.S.A.
PO Box 1228, Ann Arbor, Michigan 48106-1228 U.S.A.
Phone: (734) 662-5691 • FAX: (734) 662-6652
www.king-gage.com
C O R P O R A T I O N
E N G I N E E R I N G
KING
®
Since 1937
