Texas Instruments Weather Report Logger WRL-25 Manual page 3

WRL Instruction Manual
the unit is already mounted, pick a calm day or immobilize the wind vane by hand. Enter calibration
mode on the display
the TWI_LOG program
proper direction achieved.
The outside temperature/humidity pagoda should be mounted about two feet under the wind sensor.
Again we suggest a twenty foot mast for commercial installations to overcome the artificially high
readings generated by a hot roof. Plug the temperature/humidity pagoda cable into the blue RJ45
connector in the junction box.
The rain collector is normally mounted on the mast. It should be mounted as low as possible to
reduce windage and to limit movement of the mast which can cause false readings. The collector
should be mounted in a manner that allows rain to enter the 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.
Mount the junction box under the rain collector using the hose clamps that are installed on the box
(see figure 1). Remove the front cover of the junction box, inserting the connectors from the sensors
and the cables from the console through the hole in the bottom of the junction box and then out of
the front of the box. Plug all the yellow connectors in the yellow RJ45 connectors and all the blue
connectors into the blue RJ-45 connectors and then pull the excess cable out of the j-box. Carefully
seal the bottom hole in the box from the inside by using the plumbers putty provided. Be sure and
replace the rubber gasket on the junction box so that it can remain watertight.
Plug the yellow intermediate cable (wind) into the yellow pigtail exiting the back of the console. Do
the same for the blue cable (temp/humidity & rain). cables. Next plug in the serial cable into the
connectors in the rear of the console and the proper serial port of your computer. If you are
supplying your own serial cable be sure that you have a
or that the cable is a null modem cable. The cable with four ends that is supplied with your
instrument has a null modem built in. Plug the wall transformer into a 120V wall socket to power
up the unit.
Texas Weather Instruments, Inc.
(see page 9) and step the direction around using the min or max key, or load
(see page 14) in your computer and change item 7, wind dir offset, until the
null modem adapter attached to the cable
WRL Instruction Manual