Desiccant Data & Conversion Charts
It is imperative that electrical, electronic, and optical equipment be kept moisture free to ensure proper system operation and reliability. Contaminants and moisture in compressed air or gas systems will degrade and cause failure of equipment.
Below are a selection of charts that you may find useful when considering moisture issues.
Flow Rate • Pressure • Temperature
Table • Gas
Constants • Concentration
Equivalents
Temperature
Conversion • Dew
Point vs Parts Per Million
|
| From/to |
lit/sec |
gal/min |
ft
3
/sec |
ft
3
/min |
bbl/hr |
bbl/day |
| lit/sec |
1 |
15.85 |
0.03532 |
2.119 |
22.66 |
543.8 |
| gal/min |
0.06309 |
1 |
0.00223 |
01337 |
1.429 |
34.3 |
| ft
3
/sec |
28.32 |
448.8 |
1 |
60 |
641.1 |
1.54X104 |
| ft
3
/min |
0.4719 |
7.481 |
0.01667 |
1 |
10.69 |
256.5 |
| bbl/hr |
0.04415 |
0.6997 |
0.00156 |
0.09359 |
1 |
24 |
| bbl/day |
0.00184 |
0.02917 |
6.50X10-5 |
0.0039 |
0.04167 |
1 |
|
| from/to |
mmHg |
in Hg |
in H
2
0 |
ft H
2
0 |
atm |
lb/in
2
|
kg/cm
2
|
| mmHg |
1 |
0.03937 |
0.5353 |
0.446 |
0.00132 |
0.01934 |
0.00136 |
| in
Hg |
25.4 |
1 |
13.6 |
1.133 |
0.03342 |
0.4912 |
0.03453 |
| in H
2
0 |
1.868 |
0.07355 |
1 |
0.08333 |
0.00246 |
00.03613 |
0.00254 |
| ftH
2
0 |
22.42 |
0.8826 |
12 |
1 |
0.0295 |
0.4355 |
0.03048 |
| atm |
760 |
29.92 |
406.08 |
33.9 |
1 |
14.7 |
1.033 |
| lb/in
2
|
51.71 |
2.036 |
27.67 |
2.307 |
0.06805 |
1 |
0.07031 |
| kg/cm
2
|
735.6 |
28.96 |
393.7 |
32.81 |
0.9678 |
14.22 |
1 |
| Temperature |
|
°
C |
°
F |
|
°
C |
°
F |
|
°
C |
°
F |
|
°
C |
°
F |
| -273.15 |
-459.67 |
|
25 |
77 |
|
240 |
464 |
|
540 |
1004 |
| -260 |
-436 |
|
30 |
86 |
|
250 |
482 |
|
550 |
1022 |
| -240 |
-400 |
|
35 |
95 |
|
260 |
500 |
|
560 |
1042 |
| -220 |
-364 |
|
40 |
104 |
|
270 |
518 |
|
570 |
1058 |
| -200 |
-328 |
|
45 |
113 |
|
280 |
536 |
|
580 |
1076 |
| -180 |
-292 |
|
50 |
122 |
|
290 |
554 |
|
590 |
1094 |
| -160 |
-256 |
|
55 |
131 |
|
300 |
572 |
|
600 |
1112 |
| -140 |
-220 |
|
60 |
140 |
|
310 |
590 |
|
610 |
1130 |
| -120 |
-184 |
|
65 |
149 |
|
320 |
608 |
|
620 |
1148 |
| -100 |
-148 |
|
70 |
158 |
|
330 |
626 |
|
630 |
1166 |
| -80 |
-112 |
|
75 |
167 |
|
340 |
644 |
|
640 |
1184 |
| -70 |
-94 |
|
80 |
176 |
|
350 |
662 |
|
650 |
1202 |
| -65 |
-85 |
|
85 |
185 |
|
360 |
680 |
|
660 |
1220 |
| -60 |
-76 |
|
90 |
194 |
|
370 |
698 |
|
670 |
1238 |
| -55 |
-67 |
|
95 |
203 |
|
380 |
716 |
|
680 |
1256 |
| -50 |
-58 |
|
100 |
212 |
|
390 |
734 |
|
690 |
1274 |
| -45 |
-49 |
|
110 |
230 |
|
400 |
752 |
|
700 |
1292 |
| -40 |
-40 |
|
120 |
248 |
|
410 |
770 |
|
710 |
1310 |
| -35 |
-31 |
|
130 |
266 |
|
420 |
788 |
|
720 |
1328 |
| -30 |
-22 |
|
140 |
284 |
|
430 |
806 |
|
730 |
1346 |
| -25 |
-13 |
|
150 |
302 |
|
440 |
824 |
|
740 |
1364 |
| -20 |
-4 |
|
160 |
320 |
|
450 |
842 |
|
750 |
1382 |
| -15 |
5 |
|
170 |
338 |
|
460 |
860 |
|
760 |
1400 |
| -10 |
14 |
|
180 |
356 |
|
470 |
878 |
|
770 |
1418 |
| -5 |
23 |
|
190 |
374 |
|
480 |
896 |
|
780 |
1436 |
| 0 |
32 |
|
200 |
392 |
|
490 |
914 |
|
790 |
1454 |
| 5 |
41 |
|
210 |
410 |
|
500 |
932 |
|
800 |
1472 |
| 10 |
50 |
|
212 |
414 |
|
510 |
950 |
|
810 |
1490 |
| 15 |
59 |
|
220 |
428 |
|
520 |
968 |
|
820 |
1508 |
| 20 |
68 |
|
230 |
446 |
|
530 |
986 |
|
830 |
1526 |
| Gas Constants |
| Numerical
Constant |
Value |
Unit of
Measurement |
| Volume of Ideal Gas
at STP |
22.414 L |
Liters, 0°C, 1
atm. |
| Volume of
Ideal Gas at NTP |
24.416 L |
Liters, 70°F, 1
atm. |
| Avogadro's
Number |
6.0221367 x
1023 |
molecules/gm-mole |
| Desnity of
Air (STP) |
1.2928 |
grams/liters |
| Gas Law
Constant, R |
1.98719 |
cal/(gm-mol)(°K) |
| |
82.568 |
(cm
3
)(atm)/(gm-mol)(°K) |
| Concentration
Equivalents |
| Multiply |
ppt |
ppb |
ppm |
% |
| parts per trillion,
ppt |
1 |
0.001 |
0.000001 |
1.00E-10 |
| parts per billion,
ppb |
1,000 |
1 |
0.001 |
1E-07 |
| parts per million,
ppm |
1,000,000 |
1,000 |
1 |
0.0001 |
| Percent, % |
10,000,000,000 |
10,000,000 |
10,000 |
1 |
| Temperature
Conversion |
| Multiply |
°C,
Celsius |
°F,
Fahrenheit |
°K,
Kelvin |
°R,
Rankin |
| Celsius,
°C |
1 |
9/5(C) +
32 |
°C
+ 273.15 |
(°C
+273.15)1.8 |
| Fahrenheit,
°F |
(°F-32)(5/9) |
1 |
(°F-32)(5/9)+273.115 |
°F
+ 459.67 |
| Kelvin,
°K |
°K-273.15 |
(°K-273.15)1.8+32 |
1 |
(°K)1.8 |
| Rankin,
°R |
(°R/1.8)-273.15 |
°R-459.67 |
°R/1.8 |
1 |
| Moisture in Gases - Approximate
Relationships |
| Dewpoint |
PPM on
Volume Basis |
| °C |
°F |
| -90 |
-130 |
.0923 |
| -88 |
-126 |
.134 |
| -66 |
-123 |
.184 |
| -84 |
-119 |
.263 |
| -82 |
-116 |
.382 |
| -78 |
-112 |
.526 |
| -76 |
-108 |
.747 |
| -74 |
-105 |
1.01 |
| -72 |
-101 |
1.38 |
| -70 |
-98 |
1.88 |
| -68 |
-94 |
2.55 |
| -66 |
-90 |
3.44 |
| -64 |
-87 |
4.60 |
| -62 |
-83 |
6.10 |
| -60 |
-80 |
8.07 |
| -58 |
-78 |
10.6 |
| -56 |
-72 |
14.0 |
| -54 |
-69 |
18.3 |
| -52 |
-65 |
23.4 |
| -50 |
-62 |
31.1 |
| -48 |
-58 |
39.4 |
| -46 |
-54 |
49.7 |
| -44 |
-51 |
49.7 |
| -42 |
-47 |
63.2 |
| -40 |
-44 |
80.0 |
| -38 |
-40 |
101. |
| -36 |
-36 |
127. |
|
Back to
top |
|
| -34 |
-33 |
159. |
| -32 |
-29 |
198. |
| -30 |
-26 |
249. |
| -28 |
-22 |
309. |
| -26 |
-18 |
376. |
| -24 |
-15 |
462. |
| -22 |
-11 |
566. |
| -20 |
-8 |
691. |
| -18 |
-4 |
841. |
| -15 |
0 |
1,020. |
| -14 |
+3 |
1,230. |
| -12 |
+7 |
1,490. |
| -10 |
+10 |
1,790. |
| -8 |
+14 |
2,140. |
| -6 |
+18 |
2,560. |
| -4 |
+21 |
3,060. |
| -2 |
+25 |
3,640. |
| 0 |
+28 |
4,320. |
| +2 |
+32 |
5,100. |
| +4 |
+36 |
6,020. |
| +6 |
+39 |
7,060. |
| +8 |
+42 |
8,130. |
| +10 |
+46 |
9,370. |
| +12 |
+50 |
10,720. |
| +14 |
+54 |
12,280. |
| +16 |
+57 |
14,140. |
| |
+60 |
15,980. |
| |
|
18,160 |
|
