DAVIS Health EnviroMonitor User Manual download pdf (Page 40)

Using the Health EM

Page 48 Health EnviroMonitor Manual

Wind Speed

You may change the wind CAL to adjust the wind speed readings according to

the equation shown below. If you change CAL for wind speed, any calculated

data which uses wind speed (wind chill, for example) will also be affected.

Calibrated Wind Speed = Revolutions * (1600/CAL)

Default CAL = 1600 (for mph), 995 (for kph), 1843 (for knots), or 3578 (for m/s).

Rainfall

Rainfall CAL determines how much rainfall each increment (pulse) represents.

The default rainfall CAL of 100 works for a 0.01” increment.

Calibrated Rainfall= # of pulses * (1/CAL)

Default CAL = 100 (for 0.01" rain collector).

If you use a rain collector which measures in a different increment, or if you

wish to display rainfall in a unit of measure other than the rain collector’s

native unit of measure, consult the table below to determine the correct calibra-

tion number for your purposes.

Note: Rainfall CAL must be a whole integer (no decimals). Generally, if the Health EM is set to display rain-

fall in a unit of measure other than the rain collector’s “native” unit of measure, you would be

required to enter a CAL number which was not a whole integer. Therefore, we STRONGLY advise you

to always set your Health EM to display the rain collector’s native unit of measure before entering,

changing, or viewing rainfall CAL. Failure to do so may result in inaccurate rainfall readings. Be

aware, however, that no so long as have the correct rainfall CAL for your rain collector, the

Health EM will accurately convert rainfall amounts from inches to millimeters (and vice versa).

RAIN COLLECTOR’S

“NATIVE” INCREMENT

DISPLAY UNITS RAINFALL CAL

0.01 inches Inches 100 (default)

0.01 inches Millimeters N/A (See note below table.)

0.1 inches Inches 10

0.1 inches Millimeters N/A (See note below table.)

0.2 mm Inches 127

0.2 mm Millimeters 5

1 mm Inches N/A (See note below table.)

1 mm Millimeters 1

1 2 ... 35 36 37 38 39 40 41 42 43 44 45 ... 59 60

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DAVIS Health EnviroMonitor User Manual Page 40