Operation
For explanatory purpose, all icons are presented in the section “Display”. However, during daily
operation, only part of these icons is displayed.
On/off
Long press
POWER
button to turn on or off the device. When left without any operation for 15 min,
the device turns off automatically.
Measurements
Press
MODE
button to toggle among 7 modes. It shows real time value for 6 modes
•
Dry bulb temperature
•
Wet bulb temperature
•
Globe temperature
•
Wind speed
•
Humidity
•
WBGT
Based on TWL theory, real time value of TWL is not practical. Averaged data is more presentative to
show user the condition of the environment. TWL calculation is only triggered by pressing
TWL
button.
TWL
Before any measurement, the TWL mode shows
- - - . -
W/m
2
.
Trigger a measurement
Press
TWL
button to calculate a TWL value. It takes 2 min to compute a TWL
value because 2-min average is more representative than a snapshot.
Check out the screen
When calculating a TWL value, the screen shows average wind speed from the
1
st
second to current moment. When calculating, TWL icon blinks and a countdown timer shows the
time remains.
Finish measurement
When the calculation is done, a TWL value and correspondent risk icon shows
alone with the suggested work time as indicated in Table 1.
Backlight
Press
BACKLIGHT
button to turn on the colorful backlight of the LCD. The color corresponds with
the TWL range and risk (Table 1). Before any TWL value is calculated, pressing
BACKLIGHT
key only
flashes
- - - . -
twice.
7
