Page 485 - Boiler_Operators_Handbook,_Second_Edition

470 Boiler Operator’s Handbook

Here’s the table you made. Once you tank (before you fill it with water) from
have the table made, it would pay to the level after it’s filled then find the
find some laminating plastic and cover pounds of chemical to add from the table.
it then mount it next to the tank. With
this table you subtract the level in the

Level Chemical Level Chemical
1 1.27 25 31.75
2 2.54 26 33.02
3 3.81 27 34.29
4 5.08 28 35.56
5 6.35 29 36.83
6 7.62 30 38.1
7 8.89 31 39.37
8 10.16 32 40.64
9 11.43 33 41.91
10 12.7 34 43.18
11 13.97 35 44.45
12 15.24 36 45.72
13 16.51 37 46.99
14 17.78 38 48.26
15 19.05 39 49.53
16 20.32 40 50.8
17 21.59 41 52.07
18 22.86 42 53.34
19 24.13 43 54.61
20 25.4 44 55.88
21 26.67 45 57.15
22 27.94 46 58.42
23 29.21 47 59.69
24 30.48 48 60.96

You could also create a chart based on always raise the level to the 48 inches,
the level before you filled it when you subtract the level values in the table from
fill the tank to a consistent level. If you 48 and replace them with the result.