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| Winters Instruments Manufacturer of Industrial Instrumentation |
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| Winters Pressure Gauge Accuracy |
Accuracy is defined as the conformity of an indication to its true value. Accuracy is a percentage of the full range. For example, a gauge that has a scale of 0-300 psi with an accuracy of ±1% would mean that the gauge is accurate to within ± (plus or minus) 3 psi.=
Accuracy Grade - ASME B40.1 (American Society of Mechanical Engineers
Accuracy grade |
Lower 1/4 of scale |
Middle 1/2 of scale |
Upper 1/4 of scale |
4A |
0.1 |
0.1 |
0.1 |
3A |
0.25 |
0.25 |
0.25 |
2A |
0.5 |
0.5 |
0.5 |
1A |
1 |
1 |
1 |
A |
2 |
1 |
2 |
B |
3 |
2 |
3 |
C |
4 |
3 |
4 |
D |
5 |
5 |
5 |
|
| Winters Pressure Conversion Table |
How to use Winters' pressure conversion table
1) Find the COLUMN with the unit of measure you want to convert from and move down that COLUMN until you find the number "1"
2) Move horizontally within the same ROW to find the Conversion Factor of the scale you want
3) Multiply the Conversion Factor (number in the box) by the amount you are changing from to get the pressure in the scale you are seeking (e.g. 50 bar to be converted to psi scale: 1 bar equals to 14.5038 psi (Conversion Factor), so 50 bar equals to 725.19 psi)
| Dial Scale |
psi
|
kPa
|
kg/cm2
|
cm of H2O
|
ft of H20
|
in of Hg
|
mm of Hg
|
psi
|
1 |
6.894757 |
0.070306958 |
70.306927 |
2.306723 |
2.03602 |
51.71486 |
kPa
|
0.1450377 |
1 |
0.01019716 |
10.19745 |
0.3345618 |
0.2952997 |
7.50061 |
kg/cm2
|
14.223343 |
98.06694 |
1 |
1000.026 |
32.809312 |
28.95901 |
735.5588 |
cm of H2O
|
0.0142229 |
0.0980634 |
0.00099997 |
1 |
0.032808 |
0.0289581 |
0.7355372 |
ft of H2O
|
0.433515 |
2.968961 |
0.03047912 |
30.48 |
1 |
0.882646 |
22.4192 |
| in of Hg |
0.4911542 |
3.386389 |
0.0345316 |
34.53253 |
1.132957 |
1 |
25.4 |
| mm of Hg |
0.0193368 |
0.1333225 |
0.00135951 |
1.359554 |
0.0446046 |
0.039370079 |
1 |
| in of H2O |
0.03612628 |
0.2490819 |
0.00254219 |
2.54 |
0.08333 |
0.0735539 |
1.8682683 |
| oz per in2 |
0.0625 |
0.4309223 |
0.004394308 |
4.394308 |
0.14417 |
0.12725125 |
3.23218 |
| atmosphere |
14.696 |
101.32535 |
1.033231 |
1033.2633 |
33.8995 |
29.9213 |
760 |
| bar |
14.5038 |
100 |
1.019716 |
1019.7466 |
33.4833 |
29.53 |
750.0626 |
| mbar |
0.0145 |
0.1 |
0.001019 |
1.019 |
0.003456 |
0.02953 |
0.75006 |
| MPa |
145 |
999.79 |
10.197 |
10197.45 |
334.56 |
295.299 |
7500.61 |
Dial Scale
|
in of H20
|
oz per in2 |
atmosphere |
bar |
mbar |
MPa
|
| psi |
27.68068 |
16
|
0.068046
|
0.06894757 |
68.9476 |
0.00689 |
| kPa |
4.01472 |
2.320603
|
0.009669235
|
0.01 |
10 |
0.001 |
| kg/cm2 |
393.711806 |
227.57349
|
0.967841596
|
0.98066494 |
1013.25 |
0.09806 |
| cm of H2O |
0.3937 |
0.227566
|
0.000967814
|
0.000980634 |
0.9806 |
0.00098 |
| ft of H2O |
12 |
6.93624 |
0.02949896 |
0.02968961 |
29.689 |
0.00298 |
| in of Hg |
13.595484 |
7.85847 |
0.0334211 |
0.03386389 |
33.8639 |
0.00386 |
| mm of Hg |
0.535255 |
0.3093888 |
0.00131579 |
0.001333225 |
1.33322 |
0.00013 |
| in of H2O |
1 |
0.57802 |
0.00245825 |
0.002490819 |
2.49089 |
0.000249 |
| oz per in2 |
1.73004 |
1 |
0.004252875 |
0.004309223 |
4.309 |
0.0004309 |
| atmosphere |
406.794 |
235.136 |
1 |
1.0132535 |
1013.25 |
0.1013 |
| bar |
401.8596 |
232.0608 |
0.986923 |
1 |
1000 |
0.1 |
mbar
|
0.40146 |
0.23206 |
0.00099 |
0.001 |
1 |
0.0001 |
MPa
|
4014.74 |
2320.603 |
9.669 |
9.99 |
10000 |
1 |
|
| Winters Temperature Conversion Table |
| ºC |
ºF |
|
ºC |
ºF |
|
ºC |
ºF |
| -240 |
-400 |
|
2 |
35.6 |
|
120 |
248 |
| -220 |
-364 |
|
4 |
39.2 |
|
130 |
266 |
| -200 |
-328 |
|
6 |
42.8 |
|
140 |
284 |
| -180 |
-292 |
|
8 |
46.4 |
|
150 |
302 |
| -160 |
-256 |
|
10 |
50 |
|
160 |
320 |
| -140 |
-220 |
|
15 |
59 |
|
170 |
338 |
| -120 |
-184 |
|
20 |
68 |
|
180 |
356 |
| -100 |
-148 |
|
25 |
77 |
|
190 |
374 |
| -80 |
-112 |
|
30 |
86 |
|
200 |
392 |
| -60 |
-76 |
|
35 |
95 |
|
220 |
428 |
| -50 |
-58 |
|
40 |
104 |
|
240 |
464 |
| -45 |
-49 |
|
45 |
113 |
|
260 |
500 |
| -40 |
-40 |
|
50 |
122 |
|
280 |
536 |
| -35 |
-31 |
|
55 |
131 |
|
300 |
572 |
| -30 |
-22 |
|
60 |
140 |
|
320 |
608 |
| -25 |
-13 |
|
65 |
149 |
|
340 |
644 |
| -20 |
-4 |
|
70 |
158 |
|
360 |
680 |
| -15 |
5 |
|
75 |
167 |
|
380 |
716 |
| -10 |
14 |
|
80 |
176 |
|
400 |
752 |
| -8 |
17.6 |
|
85 |
185 |
|
420 |
788 |
| -6 |
21.2 |
|
90 |
194 |
|
440 |
824 |
| -4 |
24.8 |
|
95 |
203 |
|
460 |
860 |
| -2 |
28.4 |
|
100 |
212 |
|
480 |
896 |
| 0. |
32 |
|
110 |
230 |
|
Basic formula: ºC = 5/9 (ºF - 32) and ºF = 9/5 (ºC+32) |
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