Hpa And Mmhg Conversion Table; Error When No Atmospheric Correction Is Made - Pentax R-315EX(NX) Instruction Manual

13.3 hPa and mmHg conversion table

[Converting from hPa to mmHg]
hPa 0
mmHg
500 375
600 450
700 525
800 600
900 675
1000 750
1100 825
1200 900
[Converting from mmHg to hPa]
mmHg 0
hPa
400 533
500 667
600 800
700 933
800 1067
900 1200

13.4 Error when no atmospheric correction is made

When measurement is carried out with no atmospheric correction (with the settings fixed
at a temperature of 15°C and an atmospheric pressure of 1013hPa or 760mmHg), the error
per 100 meters in temperature and pressure will be shown in the tables below.
• When the actual pressure is 1013hPa (760mmHg) and the temperature is 25°C,
conducting the measurement with the temperature left at 15°C will result in the
measurement being short by 0.9mm per 100 meters.
[Error table: When hPa (15°C, 1013hPa as standard)]
1200
hPa
C°
45 2.0
35 3.0
25 4.0
15 5.2
5 6.3
-5 7.6
-15 9.0
72
10 20 30
mmHg mmHg mmHg
383 390 398
458 465 473
533 540 548
608 615 623
683 690 698
758 765 773
833 840 848
908 915 923
10 20 30
hPa hPa hPa
547 560 573
680 693 707
813 827 840
947 960 973
1080 1093 1107
1213 1227 1240
1100 1013 900
-0.5 -2.6 -5.5
0.4 -1.8 -4.7
1.4 -0.9 -4.0
2.4 -0.0 -3.1
3.5 1.0 -2.2
4.7 2.1 -1.3
5.9 3.2 -0.2
40 50 60
mmHg mmHg mmHg
405 413 420
480 488 495
555 563 570
630 638 645
705 713 720
780 788 795
855 863 870
930 938 945
40 50 60
hPa hPa hPa
587 600 613
720 733 747
853 867 880
987 1000 1013
1120 1133 1147
1253 1267 1280
800 700 600
-8.0 -10.5 -13.0
-7.3 -9.9 -12.5
-6.6 -9.3 -12.0
-5.9 -8.6 -11.4
-5.1 -8.0 -10.8
-4.2 -7.2 -10.2
-3.3 -6.4 -9.5
70 80 90
mmHg mmHg mmHg
428 435 443
503 510 518
578 585 593
653 660 668
728 735 743
803 810 818
878 885 893
953 960 968
70 80 90
hPa hPa hPa
627 640 653
760 773 787
893 907 920
1027 1040 1053
1160 1173 1187
1293 1307 1320
Unit: mm
500
-15.5
-15.1
-14.6
-14.2
-13.7
-13.1
-12.6