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Texas Weather Instruments, Inc. 4 WRL Instruction Manual
OPERATION
Report
Hold
Windchill
Hold
Comfort
Hold
Last
Hold
Select Clear Min Max
Scale
Barometer/Humidity
Rainfall
Average
Date/Time
Weather Report
Temperature
FUNCTION KEYS
Select
The select key, when depressed at exactly the same time as the report key, puts the unit
into time/date and lunar/tide cycle set mode. When the select and scale keys are
depressed at exactly the same time, the unit enters the calibration set mode. When the
select and average keys are pressed at the same time, the unit enters the printer set
mode. When select and last are depressed at exactly the same time the instrument enters
rainfall history set. When select and time hold are pressed at exactly the same time the
instrument enters logging mode. When the select key is held for 10 seconds, the unit will
enter or exit protect mode. Once the instrument is in its respective mode, the select key is
used to step through the different functions. If the unit is in protect mode, all of these
functions are disabled
Clear
The clear key, when depressed, causes the unit to display the date and time of the last
memory clear. Pressing clear and minimum at the same time clears the unit's memory.
Pressing clear and maximum at the same time also clears the unit's memory. Pressing
clear and last rain clears the term rainfall.
Minimum
The minimum key, when repeatedly depressed, steps through wind-speed/wind-
direction, temperature, barometric pressure, humidity and rainfall rate, displaying the
minimum reading of each of these functions since the last time the unit memory was