Casella CEL Software for Heat Stress Monitor HSM100 - Manual (Page 13)

HEAT STRESS MONITOR
Handbook No. HB3215-05
Page 13 of 16
DEWPOINT()
Calculates the DEW point temperature based upon a Data source of Vapour Pressure.
HUMIDITY(WET,V,P)
Calculates a Humidity value based upon a data source of 'Dry' bulb Temperature, a 'Wet' bulb
temperature, Ventilation and a Pressure constants. The 'Scale' function is used to set the
Ventilation constant to 0.000696 and the Pressure constant to 1000mBar.
DEGREEDAY(THRESHOLD,[ABOVE/BELOW])
An integrating function used to calculate 'Degree Day' values. For Degree day measurement the
input data source would be a temperature value. The Temperature difference above or below the
'Threshold' is integrated with respect to time.(ie, if the temperature is 2°C above threshold for 12
hours (half a day) then the result would be 1 degree-day.
ROLLAVG(SECONDS)
Calculates the rolling average of the data input occurring over a 'Seconds' time period.
SCALE (M, C)
Provides linear scaling of the input data source values according to the equation :-
Processed Data =Mx+C. where ' X' is the specified 'Data input' channel.