Casella CEL Software for Heat Stress Monitor HSM100 User Manual
Page 12
HEAT STRESS MONITOR
Handbook No. HB3215-05
Page 12 of 16
18.0 DATA INPUTS AND PROCESSED DATA.
The defining of data inputs and processed data channels represents the most complex aspect of the 'HSM'
software package. Most users should have no need to edit or modify any of the data definitions. The
program will be supplied with all data inputs pre-configured to suit the HSM100 output message. Vapour
pressure, dew point and humidity values are also calculated. Under normal circumstances it should not be
necessary to modify any of the data definitions. The primary data input from the HSM100 is defined
within the 'Edit Data Input' 'Device' 'Channels' window. The Data inputs represent the sequence of data
values contained within the HSM100 message. The serial data message transmitted by the HSM100 is
shown below;-
I,+021.5,+021.5,+028.7,+018.4,+028.7,M,+025.3,+025.2,+030.3,+022.7,+031.7,C,2,H
I,+021.5,+021.5,+028.7,+018.4,+028.7,M,+025.3,+025.2,+030.3,+022.7,+031.7,C,2,H
The comma separated values represent the following parameters;-
I
Instant values next
+021.5
Indoor WBGT
+021.5
Outside WBGT
+028.7
Dry Temp
+018.4
Wet Temp
+028.7
Globe Temp
M
Max values next
+025.3
Max Indoor WBGT
+0225.2
Max Outside WBGT
+030.3
Max Dry Temp
+022.7
Max Wet Temp
+031.7
Max Globe Temp
C
Degrees C used (F for Fahrenheit)
2
Globe Size
H
Battery State (H=High, L=Low)
Data obtained from the raw input 'Channels' is passed into 'Processed data' channels. Processed data
channels are used to define the acceptable range of the data, high and low alarm thresholds, the data
format (number of decimal places), logging units and also to provide various mathematical functions.
Functions include:-
EXTREME ([MAX/MIN])
Retains the maximum or minimum data value since reset or midnight.
Reset the extreme values using the 'Reset Parameter'
command from the 'Options' menu.
VAPOUR(HUMIDITY)
Calculates the Vapour pressure (hPa) based upon a data source containing the Temperature (°C)
and the Humidity (%RH) value.