Hauser
13
Float Gauge LTC2230/LTC2240
4.3
Indicator Adjustment
Following are the three universal procedures for indicator adjustment:
•
Fill the tank with actual liquid and calibrate the indicator to measured volume.
•
With the tank empty, calibrate the indicator using formulaic calculations.
•
Fill the tank with water and calibrate the indicator to measured volume.
Note!
After removing the cover, the indicator can be removed by pulling it outward. Align and insert the indicator,
using calculated value.
4.3.1
Calibration Using Actual Measuring Liquid
After filling the tank halfway with liquid, the indicator calibration should be performed. This is the ideal level
for calibrating indicator. Calibration is possible, however, whether tank is low or filled to capacity.
In order to obtain a reliable value, measure the liquid level two or three times, using a measuring tape which
has been officially tested accurate to within ±0.3 mm/m (±1.2mm/10 m). Calibrate to the values only after
accurate data has been gathered.
Figure 6:
Indicator Adjustment
4.3.2
Calibration through Calculation for Empty Tank
1.
When the tank is empty, calculate the liquid level Lƒ using the following formula and set indicator to the
determined value.
2.
When liquid reaches to the value of Lƒ, the float gains buoyancy and LTC will show proper liquid level.
h
：
Lower half of float height
・・・・・・
10cm
W
：
Float weight
・・・・・・
（ ）
g
（
see following table
）
W1
：
Conster spring weight
・・・・・・
1200g
ρ：
Specific density of liquid
・・・・・・
（ ）
g/cm³
Q
：
Lower half of float volume
・・・・・・
1331cm³
A
：
Cross-sectional area of crindrical part of float
・・・・・・
154cm²
Measured Specific Density
0.5
〜
0.93g/cm³ 0.94
〜
2.0g/cm³
Float Weight
(Allowable Range ± 100g)
2100g
2400g
For expample: When the density of measuring liquid is 1;
Set the indicator to 90mm (9cm).
4 Installation Adjustment
