Extech Instruments DO700, User Manual

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DO700-en-GB_v2.3 3/15
25
Appendix D – DO of Saturated Water vs. Altitude
Altitude Barometric
pressure
DO
(25°C)
Altitude Barometric
pressure
DO
(25°C)
Feet
meters kPa mmHg mg/l Feet Meters kPa mmHg mg/l
0
0 101.3 760 8.25 7500 2287 77.1 579 6.28
500
152 99.34 746 8.09 8000 2439 75.63 568 6.16
1000
305 97.6 733 7.95 8500 2591 74.44 559 6.06
1500
457 95.87 720 7.81 9000 2744 72.97 548 5.94
2000
610 94.28 708 7.68 9500 2896 71.64 538 5.83
2500
762 92.54 695 7.54 10000 3049 70.17 527 5.71
3000
915 90.95 683 7.41 10500 3201 68.84 517 5.61
3500
1067 89.35 671 7.28 11000 3354 67.38 506 5.49
4000
1220 87.75 659 7.15 12000 3659 66.58 500 5.42
4500
1372 86.15 647 7.02 13000 3963 65.78 494 5.36
5000
1524 84.56 635 6.89 14000 4268 64.98 488 5.29
5500
1677 83.09 624 6.77 15000 4573 64.18 482 5.23
6000
1829 81.63 613 6.65 16000 4878 63.38 476 5.16
6500
1982 80.03 601 6.52 17000 5183 62.58 470 5.10
7000
2134 78.56 590 6.40 18000 5488 61.79 464 5.03
Appendix E: TDS Conversion Method
Conductivity
25°C
KCl NaCl TDS 442
uS/cm mg/l Ratio mg/l Ratio mg/l Ratio
23 11.6 0.50 10.7 0.47 14.7 0.64
84 40.4 0.48 38.04 0.45 50.5 0.60
445 225.6 0.50 215.5 0.48 300 0.67
1417 744.4 0.52 702.1 0.50 1000 0.71
1500 757.1 0.50 737.1 0.49 1050 0.70
2060 1045 0.50 1041 0.50 1500 0.72
2764 1382 0.50 1415 0.51 2063 0.75
8974 5101 0.57 4860 0.54 7608 0.85
12880 7447 0.58 7230 0.56 11367 0.88
15000 8759 0.58 8532 0.57 13445 0.90
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