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Weather Report ™

Digital Weather Station

WR-25

index

Thank you for purchasing a Weather Report. Your package should contain a WR-25 console, wind
sensor, temperature/humidity sensor, rain collector and this manual.

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 and if selected, aux
temperatures (if both the indoor and outdoor indicator lights are extinguished, Aux. temperature is
displayed) 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. When wind speed exceeds 99 miles per hour, a
small green light will turn 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 was increasing. the up
trend arrow would be lit. If there was no change, no arrow would be lit.
 

INSTALLATION

 

  

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We strongly suggest that all the weather station sensors be connected to the weather station
and tested prior to installation so that you may become familiar with the operation of the
instrument.

The WR-25 uses three sensors to gather weather data. The wind direction and speed sensor, the
temperature and humidity sensor (a small black box) and the rain collector (

see figure 1)

. The wind

sensor and the rain collector are designed to mount to a television type mast (

not provided

). The

cables from the sensors attach to the console via RJ-45 connectors in the rear of the unit. Each
sensor has its own color coded plug, yellow for wind, blue for humidity/temperature and blue for
rain. The blue connectors are interchangeable with each other.

WR-25 Instruction Manual

Texas Weather Instruments, Inc.                                                                                                                                        WR-25 Instruction Manual

Summary of Contents for WR-25

Page 1: ...icators arrows are located to the right of the temperature relative humidity and barometric pressure displays If for example the current relative humidity was increasing the up trend arrow would be lit If there was no change no arrow would be lit INSTALLATION index top We strongly suggest that all the weather station sensors be connected to the weather station and tested prior to installation so t...

Page 2: ...th side of the building where it is shaded most of the year Remember the sensor will detect the exact temperature and humidity where the sensor is located If it is located above an air conditioning unit it will read that artificially hot air location is very important Ideally the outside temperature humidity sensor should be mounted with the sensor facing down Mounting the sensor vertically is als...

Page 3: ... 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 cleared In addition to the minimum reading the unit displays th...

Page 4: ...when depressed calculates and displays using humidity and temperature a factor which represents how warm the temperature feels Last The last key when pressed displays the time and date of the last rainfall and its rainfall rate When pressed at the same time as the clear key the instrument clears the term rainfall register When last pressed at the same time as select the unit enters into rainfall h...

Page 5: ...1 31 digits light Press the maximum to advance the date and minimum to retard the date 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 WR 25 Instruction Manual Texas Weather Instruments Inc WR 25 Instruction Manual ...

Page 6: ...o set the seconds note the seconds is updated on the display only when the maximum or minimum button is being depressed Press select a eighth time a single dot at the bottom separates the hour and minute the lunar tide clock will display the number of hours in a cycle Press the maximum or minimum buttons to set the hours of the cycle explained in the Lunar Tide section Press select an ninth time t...

Page 7: ...ss select a twelfth time and the unit will return to normal display mode Calibration mode index top See the calibration reference section on page 18 for other details Calibration Method Press select and scale at the same time and the unit enters the calibration mode first displaying the Aux temperature If the Aux dip switch is in the off position the unit will skip this calibration If necessary pr...

Page 8: ...lect a third time the unit displays the outdoor temperature Press the maximum or minimum key to enter the actual temperature Press select a fourth time and the unit displays barometric pressure Press the maximum or minimum key to enter the actual barometric pressure WR 25 Instruction Manual Texas Weather Instruments Inc WR 25 Instruction Manual ...

Page 9: ...his mode The first number to appear is the voltage at 0 humidity that the sensor outputs Press select again and a second number will appear This larger number is the voltage that the sensor outputs at 75 humidity The humidity calibration numbers are found on the humidity temperature sensor and on the back of the instrument console These calibration numbers are supplied to us by the manufacturer of...

Page 10: ...um or the minimum keys The output options control the selection of such things as AM PM wind speed knots auxiliary display and average wind speed output Look at the first item in the reference section called control options for more information page 18 Press select a eighth time and the unit will return to a normal display Communicating with the WR 25 Connect the 9pin female DB 9 plug of one end o...

Page 11: ...This uses the same buffer as the c and d command M Unit responds with all minimums and maximums with the date and time of their occurrence then clears m Unit responds in an identical manner as with the M command but does not clear the system memory Sample TA 10 33 038F TA 09 32 056 F TO 04 15 075F TI 15 03 080 F TO 10 33 038F TO 16 10 056 F RH 15 44 033 RH 01 40 060 BP 16 11 29 57 BP 10 20 30 15 R...

Page 12: ...g the twi_com dat file on your TWI_LOG disk To change the configuration load twi_com dat into a text editor and change to your preference The first station in this example is identified as green It is set up on com 1 at 2400 baud no parity eight data bits and one stop bit BIN DSO CD0 and CS0 are various configuration parameters that must be in the string The TWI station is configured as a remote u...

Page 13: ...individual records Each file has a file extenuation that corresponds to the ID number of each weather unit The ID number can be changed through the calibration F5 routine in Twi_Log For example if you downloaded data from a unit with the ID of 124 the data for that unit would be found in log_rec 124 Pressing F3 displays the data written on disk Press the up arrow key to go up or down one record at...

Page 14: ...ll vary depending on what options are installed Any item in this index can be changed by 1 entering the index number 2 entering the new value 3 entering Y to set the new value or N to reject the new value 1 Aux temperature calibration 2 Inside temperature calibration 3 Outside temperature calibration 4 Barometric pressure calibration 5 Elevation correction not used 6 1st humidity sensor calibratio...

Page 15: ...play when set to 0 the unit will display time in a 24 hour military format When set to 1 the unit will be in AM or PM 35 Aux disable when set to 0 will cycle the temperature display through three values indoor temp outdoor temp and the aux value aux temperature or solar When Aux disable is set to 1 the temperature display will cycle through indoor and outdoor temperatures only 36 Wind speed and di...

Page 16: ... normal mile per hour or kilometer per hour when in metric scale The second control option selects the manner in which the time is displayed 24 hour military style or the AM PM format When on the AM PM style is displayed Aux display disable is the third option when it is on the temperature display cycles between the indoor and outdoor values only If you do not have options such as aux temperature ...

Page 17: ...R 15 15 07 24 90 SSE 04MPH 052F 069F 078F 099 30 04S 00 19 D 01 38 M 00 72 R 15 30 07 24 90 SE 02MPH 065F 068F 072F 089 30 04S 00 19 D 01 38 M 00 00 R MIN 07 24 90 SW 00MPH 070F 067F 067F 054 30 00 00 19 D 01 38 M 00 00 R MAX 07 24 90 SSE 25MPH 052F 071F 092F 099 30 06 00 19 D 01 38 M 00 72 R Computer Interface The WR 25 may be plugged directly into computers equipped with RS 232 interfaces Data m...

Page 18: ...market today The rain inc flag is only utilized to tell the WR 25 what type rain collector is installed Actual measurement calibration is accomplished inside the rain collector by adjusting two stainless steel screws Setting 0 turns the rainfall counter off Setting 1 or 2 tells the WR 25 to react with one count for every momentary switch closure of the rain collector Setting 3 tells the WR 25 to r...

Page 19: ...d Minimums Clear Scale Average Performs a cold boot Windchill Comfort Dewpoint Keys must be pressed precisely at the same time to perform the desired function Lunar Tide Cycle The lunar tide cycle function may be set to display the position of the moon in relation to its revolution around the earth The moon s position is the primary although not the only factor in predicting high and low coastal t...

Page 20: ... last rain at the same time The term rainfall register may be used for any term desired by the user but is most commonly used to account for yearly rainfall The memories can also be changed by using TWI_LOG Rainfall history mode If the information is available the actual daily monthly and term rainfall amounts that occurred before the installation of the weather station may be manually entered To ...

Page 21: ...r television reception which can be determined by turning the equipment off and on the user is encouraged to try and correct the interference by one or more of the following measures Reorient or relocate the receiving antenna of the affected radio or television Increase the separation between the equipment and the affected receiver Connect the equipment and the affected receiver to power outlets o...

Page 22: ...ry unplugging then replugging the transformer to reset the weather station Check the fuse in the back of the instrument If it feels hot replace with a 75 amp fuse available at most electronic stores Humidity reads 0 during the day If your humidity sensor is in a plastic box make sure that is in the shade and has the cover attached the humidity sensor is light sensitive does not apply to pagoda ins...

Page 23: ...ions 18 D Daily rainfall history register 17 daily rainfall register 21 day 17 Dewpoint 22 F FCC RADIO FREQUENCY INTERFERENCE STATEMENT 25 FUNCTION KEYS 4 H Hold 4 hours 17 Humidity Sensor Calibration 10 20 humidity sensor calibration factor 16 I ID number 17 Inside temperature calibration 16 INSTALLATION 2 L Last 5 logging interval hours 17 logging interval minutes 17 Lunar Tide Cycle 22 WR 25 In...

Page 24: ...rn_rec 18 R rain collector 17 21 Rain collector type 16 Rain increment value 17 Rainfall 21 Rainfall history mode 23 rainfall rate interval 17 Reference Report 4 Report Flag 21 Report Interval Units 17 report output 17 Report output interval HI 17 Report output interval LO 17 RS 232 12 19 20 21 22 S Scale 4 17 Seconds 17 Select 4 WR 25 Instruction Manual Texas Weather Instruments Inc WR 25 Instruc...

Page 25: ...ory register 17 tide clock 23 Time display 17 Time Setting Mode 6 Trend indicators 1 Troubleshooting twi_com dat 14 TWI_LOG 13 20 W Wind direction calibration 16 Wind Speed scale 17 Windchill 5 13 Y years 17 TOP WR 25 Instruction Manual Texas Weather Instruments Inc WR 25 Instruction Manual ...

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