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WRL
Weather Report Logger
The WRL senses wind, temperature, humidity, barometric pressure, rainfall and time, then
outputs this data via a RS-232 interface to other devices. The WRL can be programmed
to output current weather, along with minimum and maximum conditions for the day. The
WRL keeps track of two different minimum and maximum values and up to 8000 lines of
data (depending on memory size) in its non-volatile memory clock. The WRL-10 has 2K of
memory and will retain approximately 30 lines of data. The WRL-32 has 32K of memory
and will retain approxomately 2000 lines of data. The WRL-128 has 128K of memory and
retains about 8000 lines of data. All functions of the WRL can be controlled through its RS-
232 interface.
Included with the standard WRL system is a wind direction and speed sensor, a pagoda
mounted temperature/humidity sensor, a rain collector and a pressure sensor installed in
the display console. Options include solar radiation, lightning and leaf wettness sensors.
Normal Operation
When in normal operation (no buttons depressed) the instrument displays current wind
direction and speed, cycles current time and date, cycles current indoor, outdoor
temperature. In addition, if selected, the optional solar radiation or aux temperature is
displayed when both the indoor and outdoor indicator lights are extinguished. The unit also
cycles current barometric pressure, current relative humidity, and cycles daily, monthly and
term cumulative rainfall. By utilizing the hold buttons associated with each display, the user
may select the most important readings to the user. During wind speeds in excess of 99
miles per hour a small light turns on between the digits of the wind speed display.
Trend indicators (arrows) are located to the right of the temperature, relative humidity, and
barometric pressure displays. If, for example, the current relative humidity is increasing
then the up trend arrow appears on. If there is no change in humidity, then the arrow would
not appear.
Installation
The standard WRL uses three sensors to gather weather data. The wind direction and
speed sensor, the temperature and humidity pagoda and the rain collector (see figure 1).
All are designed to mount to a television type mast (not provided). The cables from the
sensors go into a junction box, where they connect via RJ45's to two multi-wire cables
(intermediates) that are routed into the building and attached to the console. All cables are
color-coded. The yellow wind sensor cable plugs into the yellow RJ45 connector in the
junction box. The yellow intermediate (wind) also plugs into a yellow RJ45 connector in the
junction box. Plug the temperature/humidity pagoda and the rain collector (both colored
blue) and the blue intermediate into the blue RJ45 connectors in the junction box. You may
place any blue cable into any blue RJ45 connector, the order does not matter.
1
Texas Weather Instruments, Inc.
WRL Instruction Manual
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Summary of Contents for Texas Instruments WRL-10
- Page 1 WRL keeps track of two different minimum and maximum values and up to 8000 lines of data (depending on memory size) in its non-volatile memory clock. The WRL-10 has 2K of memory and will retain approximately 30 lines of data. The WRL-32 has 32K of memory and will retain approxomately 2000 lines of data.
- Page 2 There is lightning protection (transient voltage suppressers) built into the junction box. It is very important that the mast is grounded or else the transient voltage suppressers will not protect your instrument. The junction box picks up earth ground through the hose clamps mounting the box.
- Page 3 collector unencumbered by surrounding obstacles. Use a bubble level to make sure that the collector is perfectly level with the ground. Failure to level the collector will cause inaccurate rainfall readings. The rain collector has one blue cable, which must be connected to the console via the junction box.
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Page 4: Operation
OPERATION 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. - Page 5 cleared. In addition to the minimum reading, the unit displays the date and time of its occurrence. The date and time display must not be on hold in order to display both date and time. Maximum The maximum key functions the same as the minimum key, but with maximum readings. Scale The scale key changes the displays from reading in English values to those of Metric values.
- Page 6 ¸Time Setting Mode: Press select and report at the same time, and the last two digits of the year displays (i.e., 90 = 1990). Press the maximum button to advance the year and the minimum button to retard the year. If the unit is in protect mode this function is disabled. Report Time/Date Hold...
- Page 7 Press select a fourth time, and the day of the week is displayed (1 = Sunday, 2 = Monday, 3 = Tuesday, 4 = Wednesday, 5 = Thursday, 6 = Friday, and 7 = Saturday. Press the maximum button to advance the day of the week and minimum to retard. Report Hold Press select a fifth time (note the colon between the hours and minutes), and the unit will...
- Page 8 Press select a ninth time (Note: the single dot remains at the bottom, separating the hour and minute); the lunar/tide clock will display the minutes of the cycle. Press the maximum or minimum buttons to set the minutes of the cycle. Report - -.51 Hold...
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Page 9: W Eather Report
Report Time/Date Windchill Temperature Comfort Barometer/Humidity Rainfall Select Clear Minimum Maximum Press select a second time; the unit displays the indoor temperature. Press the maximum or minimum key to enter the actual temperature. Windchill - -.73 Indoor O utdoor Hold Press select a third time - the unit displays the outdoor temperature. - Page 10 Press select a fifth time; the unit displays 0, 1, 2, or 3 in the rainfall window. 2 is the normal display. Press the maximum or minimum key to enter the proper number (see calibration reference for more information). Last D aily Monthly Hold...
- Page 11 Logging Mode Press select and time hold at the same time to enter logging mode (note that all the trend indicators are on when in this mode). Report Time/Date Hold Windchill Temperature Hold Comfort Barometer/Humidity Hold Last Rainfall Hold Select Clear Minimum Maximum...
- Page 12 second, log interval, determines how often the unit saves data to its internal memory. If the unit is in protect mode this function is disabled. Pressing select and average at the same time puts the unit into print set mode. The unit first displays the report interval in number of hours between lines of printed information.
- Page 13 Protect Mode When the unit is in protect mode, scale, time setting, calibration and print set modes are disabled. To enter or exit protect mode, press the select key for more than 10 seconds. The WRL will display PPPP in the time and date window when the select key is depressed while in protect mode.
- Page 14 d- Unit responds in an identical manner as the c command but does not clear the system memory E or e- Unit responds with minimum and maximums along with date and time of occurrence. This uses the same buffer as the c and d command. M- Unit responds with all term minimums and maximums with the date and time of their occurrence, then clears.
- Page 15 date time temp Note: if you have the optional solar sensor, all aux temperature data will be replaced with solar data followed by the letter K. Reference Control Options Control options can be changed via the console using the print set routine (see print set mode).
- Page 16 Pin 3 Pin 5 . . . Transmit Data Pin 4 Pin 7 ..Data Set Ready Pin 5 Pin 9 . . . Signal Ground Pin 6 Pin 2 . . . Data Terminal Ready (must be true to send data) Pin 7 Pin 4 .
- Page 17 Calibration The Weather Report comes pre-calibrated from the factory, but it is possible to recalibrate most of the primary functions of the instrument using TWICAL program. Barometric Pressure Normally, barometric pressure is the only item that needs to be recalibrated (adjusting for altitude).
- Page 18 The daily rainfall register is zeroed every day at midnight. The monthly rainfall register is zeroed on the last day of each month at midnight. The term rainfall register is never zeroed automatically, it must be manually zeroed through the calibration routine Report Flag The report flag selects the format of the RS-232 output and may be changed via the the print set mode or the TWICAL program calibration...
- Page 19 When the clear button is depressed and held, the unit will display the date and time the instrument's memory was last cleared. In order to clear the memories, the clear and minimum button must be pushed at the same time. The items cleared are as follow: minimum and maximum, wind speed, temperature (indoor, outdoor, and aux), barometric pressure and humidity.
- Page 20 Texas Weather Instruments, Inc. WRL Instruction Manual...
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Page 21: Shielded Cable
FCC RADIO FREQUENCY INTERFERENCE STATEMENT NOTE: This equipment has been tested and found to comply with the limits for a Class B digital device, pursuant to Part 15, Subpart B, of the FCC Rules. generates, uses, and can radiate radio frequency energy. If not installed and used in accordance with the instructions, this equiment may cause interference to radio communications. - Page 22 ASCII characters, 13 AT control signals, 16 Average, 5 Barometric Pressure, 17 Calibration, 17 Calibration Method, 8 Calibration mode, 8 Clear, 4 Clearing the Memories, 19 Comfort, 5 Command Characters, 13 Computer Interface, 16 Control Options, 15 daylight savings mode, 15 Daylight Savings Mode, 13 FUNCTION KEYS, 4 Hold, 5...
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