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Barometer - Altitude Compensation

Elevation compensating manometer.

Manometer - compensating for elevation

Due to decreased/increased air pressure with increased/decreased altitude the reading of barometric pressures at other elevations than sea level must be compensated.

Add compensation values to the barometric readings from the table below:

Barometer - Altitude Above Sea Level Compensation
Altitude Compensation Value (add to scale)
feetmetersinches Hgmm Hgpsiakg/cm2kPahPamBar
-1000 -305 -1.1 -28 -0.5 -0.04 -4 -37 -37
-800 -244 -0.9 -22 -0.4 -0.03 -3 -30 -30
-600 -183 -0.7 -17 -0.3 -0.02 -2 -22 -22
-400 -122 -0.4 -11 -0.2 -0.02 -1 -15 -15
-200 -61 -0.2 -6 -0.1 -0.01 -1 -7 -7
0
(sea level)		 0 0.0 0 0.0 0.00 0 0 0
200 61 0.2 6 0.1 0.01 1 7 7
400 122 0.4 11 0.2 0.015 1 15 15
600 183 0.6 16 0.3 0.022 2 22 22
800 244 0.9 22 0.4 0.030 3 29 29
1000 305 1.1 27 0.5 0.037 4 36 36
1200 366 1.3 33 0.6 0.044 4 43 43
1400 427 1.5 38 0.7 0.051 5 50 50
1600 488 1.7 43 0.8 0.058 6 57 57
1800 549 1.9 48 0.9 0.065 6 64 64
2000 610 2.1 54 1.0 0.073 7 71 71
2200 671 2.3 59 1.1 0.080 8 78 78
2400 732 2.5 64 1.2 0.087 8 85 85
2600 792 2.7 69 1.3 0.093 9 92 92
2800 853 2.9 74 1.4 0.100 10 98 98
3000 914 3.1 79 1.5 0.107 11 105 105
3200 975 3.3 84 1.62 0.114 11 112 112
3400 1036 3.5 89 1.72 0.121 12 118 118
3600 1097 3.7 94 1.81 0.128 13 125 125
3800 1158 3.89 99 1.91 0.134 13 132 132
4000 1219 4.08 104 2.00 0.141 14 138 138
4200 1280 4.27 109 2.10 0.148 14 145 145
4400 1341 4.46 114 2.19 0.154 15 151 151
4600 1402 4.65 118.9 2.28 0.161 16 157 157
4800 1463 4.84 123.7 2.38 0.167 16 164 164
5000 1524 5.03 128.5 2.47 0.174 17 170 170
5200 1585 5.21 133.2 2.56 0.180 18 176 176
5400 1646 5.40 138.0 2.65 0.186 18 183 183
5600 1707 5.58 142.6 2.74 0.193 19 189 189
5800 1768 5.76 147.3 2.83 0.199 20 195 195
6000 1829 5.94 151.9 2.92 0.205 20 201 201
6200 1890 6.12 156.6 3.01 0.212 21 207 207
6400 1951 6.30 161.1 3.09 0.218 21 213 213
6600 2012 6.48 165.7 3.18 0.224 22 219 219
6800 2073 6.66 170.2 3.27 0.230 23 225 225
7000 2134 6.83 174.7 3.36 0.236 23 231 231
7200 2195 7.01 179.2 3.44 0.242 24 237 237
7400 2256 7.18 183.6 3.53 0.248 24 243 243
7600 2316 7.35 188.0 3.61 0.254 25 249 249
7800 2377 7.53 192.4 3.70 0.260 25 255 255
8000 2438 7.70 196.8 3.78 0.266 26 261 261
8200 2499 7.87 201.1 3.86 0.272 27 266 266
8400 2560 8.03 205.4 3.94 0.278 27 272 272
8600 2621 8.20 209.7 4.03 0.283 28 278 278
8800 2682 8.37 213.9 4.11 0.289 28 283 283
9000 2743 8.53 218.2 4.19 0.295 29 289 289
9200 2804 8.70 222.4 4.27 0.300 29 295 295
9400 2865 8.86 226.5 4.35 0.306 30 300 300
9600 2926 9.02 230.7 4.43 0.312 31 306 306
9800 2987 9.18 234.8 4.51 0.317 31 311 311
10000 3048 9.34 238.9 4.59 0.323 32 316 316

Example - Barometer reading on the top of Ben Nevis mountain, Scotland

Ben Nevis in Scotland is 1344 m high. A barometer at this elevation must be added approximately 151 mBar to compensate for the difference in pressure from sea level.

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