Rain Bird WS-PRO Installation, Maintenance And Troubleshooting Manual
WS-PRO Weather Station
INSTALLATION,
MAINTENANCE
AND
TROUBLESHOOTING
MANUAL
November 2004 GT27145D
WS-PRO Weather Station
Table of Contents
Description Page
1.0 General........1
2.0 Tools & Supplies.......2
Tools Required......2
Supplies Required......2
3.0 Weather Station Site Selection.....3
Temperature/Relative Humidity....4
Solar Radiation......4
Precipitation.......5
Determining True North for Wind Vane Operation. 5
Prompts from Geomag.....7
4.0 Weather Station Concrete Base.....9
Supplied Components .....9
Installer Supplied......9
Tools Required......9
Installation.......9
5.0 External Wiring to Weather Station....12
Wiring Valve Access Box.....12
Weather Station Power Wiring....12
Weather Station Communication Wiring (PRO-SH) . 13
Grounding Communication Cable....13
Weather Station Communication Wiring (PRO-PH) . 15
6.0 Tower Assembly and Installation ....15
Supplied Components .....15
Installation.......15
7.0 ET Instrumentation Enclosure Installation...18
General.......18
Mounting ET Enclosure to the Tower...18
Page i
Table of Contents - Cont’d.
Description Page
Installation of Lightning Rod....19
Power Supply Rechargeable Battery....19
AC External Power Wiring.....21
Power Supply Option Solar Panel....22
8.0 Installation of Instrumentation.....24
General.......24
Supplied Components .....24
Installation of Cross-Arm to ET Enclosure...24
Installation of 034A Wind Sensor ....26
Installation of Relative Humidity/Temperature
Sensor and Radiation Shield....28
Installation of Solar Radiation Pyranometer . . 29
Sensor Cable Connections.....30
Configure Sensor Switch Settings ....31
Sensor Verification and Clock Set....31
Short Haul Modem Installation....31
Telephone Modem Installation....33
9.0 Sealing & Desiccating the Enclosure....34
10.0 Installation at Central Computer....35
Supplied Components .....35
Installation.......35
Model PRO-PH ~ Phone Connected....38
Supplied Components ....38
Installation - General.....38
Standard Installation Method . . 38
11.0 Maintenance & Troubleshooting....40
General Maintenance .....40
Instrumentation Maintenance....40
Batteries.......40
Rechargeable Battery.....40
Desiccant.......40
Sensor Maintenance......40
Page ii
Table of Contents - Cont’d.
Description Page
1 Week ......40
1 Month......41
6 Months......41
1 Year.......41
2 Years ......41
3 Years ......41
4-5 Years......41
General Maintenance .....41
Sensor Maintenance......42
Rain Gage......42
Calibrating a Rain Bucket...42
Suggestions.....42
Solar Sensor......43
Wind Sensor......43
Relative Humidity Sensor....43
Temperature Sensor.....44
Other Maintenance......44
Seal of ET Enclosure.....44
Battery Check......45
Sensor Testing ......45
Wind Speed Sensor.....46
Wind Direction Sensor....46
Solar Radiation Sensor (Pyranometer) . . 46
Tipping Bucket Rain Gage....46
Temperature/Relative Humidity Sensor . . 47
Troubleshooting......48
Isolating the Problem.... 48
Checking the Weather Station...48
Using the ML 10-KD Keyboard Display . 48
Datalogger Location Table ...49
Troubleshooting Problems....49
No display on the ML 10-KD keyboard . 49
No response using the keyboard and/or
erroneous letters in the display . 50
Page iii
Table of Contents - Cont’d.
Description Page
No Response from Datalogger through SC32A
or Modem Peripheral.....50
At the datalogger ...50
At the computer...50
-99999 Displayed in an Input Location . . 51
Unreasonable Results Displayed
in an Input Location.....51
6999 or 99999 Stored in Final Storage . . 51
Using a Laptop Computer....51
Checking the Communications Wire Path...53
Loop Resistance .....53
Ground Resistance.....53
WS-PRO-SH Direct Connect Weather Station . 53
Weather Station will not answer . . 53
Checking the RAD modem...53
Checking the Communication Wire Path . 54
WS-PRO-PH Phone Connect Weather Station . 55
Weather Station will not answer . . 55
Computer Modem & Communication Troubleshooting . 57
Weather Software will not communicate
with the weather station....57
Testing the Short Haul Modem . . 57
Testing the Phone Modem...58
Page iv
Appendix
Description Page
Upgrading the Model JR Weather Station
to a Model PRO Weather Station....59
Typical 3-Rod Grounding Grid.....59
Ground Resistance......59
Bentonite Contact......60
Rocky Conditions ......60
Rock Layer.......60
Improving Earth Grounds.....61
MSP-1 Pipe Surge Arrestors.....61
Page v
Table of Figures
Figure # Description Page
#1 Effect of Structure on Wind Flow...4
#2 Magnetic Declination for the Contiguous
United States......6
#3 Declination Angles.....8
#4 Concrete Base Detail.....11
#5 Anchor Bolt/Template Detail. . . 11
#6 External Wiring Detail at the PRO-SH Station . 14
#7 External Wiring Detail at the PRO-PH Station . 17
#8 Mounting ET Enclosure on Tower...18
#9 16VAC Connection & Rechargeable
Battery Installation....20
#10 Solar Pane Installation Detail...23
#11 Cross-Arm Mounting Detail....25
#12 Wind Sensor Installation Detail...27
#13 Temperature/RH Sensor Installation Detail. . 28
#14 Solar Radiation Sensor Installation Detail . . 29
#15 Sensor Cable Connections....30
#16 Sensor Switch Settings ....31
#18 Short Haul Modem Installation in ET Enclosure . 32
#19 Telephone Modem Installation in ET Enclosure . 34
Page vi
Table of Figures Cont’d.
Figure # Description Page
#20 Desiccant Pack Installation....34
#21 Installation at Central Computer for Direct
Connected Weather Station....37
#22 Installation at Central Computer for
Telephone Connected Weather Station . . 39
#23 Using the ML 10-KD Keyboard Display . . 48
#24 Configuration of Serial Cable...52
#25 Test of Short Haul Modem....54
#26 Test of Communication Wires...55
#28 Typical 3-Rod Grounding Grid Detail . . 62
#29 Testing of Wind Sensor....63
#30 Testing of Solar Radiation Sensor...64
#31 Testing of Rain Gage.....65
#32 Testing of Temperature/RH Sensor...66
#33 Testing of Air Temperature Probe...67
Page vii
Page viii
WS-PRO Weather Station
1.0 GENERAL:
The Rain Bird “Model PRO” Weather
Station, when used in conjunction with
the Rain Bird MAXI 5, MAXI
“Nimbus” or MAXI “Cirrus” Central
Control system, provides the irrigation
manager with a powerful tool to aid in
the growing of lush, healthy, green
turfgrass, while conserving important
resources, such as water, power, etc.
The MAXI 5, MAXI Nimbus or MAXI
Cirrus software interrogates the Weather
Station to gather information that has
been gathered on a daily basis, on 5
second intervals for short haul modem
only, of the climatic conditions that
affect the irrigation application for the
area.
The MAXI 5, MAXI Nimbus or MAXI
Cirrus software subjects the climatic
information that it gathers to a version of
the modified Penman Equation. The
Penman Equation has been proven
through over 35 years of university
research, to be one of the most reliable
predictors of turfgrass water use
requirements.
The Weather Station monitors the
following climatic conditions:
Rainfall
Wind Speed & Direction
Air Temperature
Relative Humidity
Solar Radiation
The basic PRO Weather Station
configuration includes sensors to
monitor these conditions, a micrologger
to capture this data, a modem to
communicate the information to the
MAXI Central Computer and a power
supply.
The Rain Bird Model “PRO” Weather
Station is available in two (2) basic
configurations;
Model PRO-SH, which is a
direct wire system intended for
use when the weather station is
within 20,000 feet of the MAXI
Central Computer and
communication is via a wire
path, between the weather
station and the computer.
Model PRO-PH, which is a
phone modem system for use
when the weather station is
further than 20,000 feet from the
MAXI Central Computer or
when they cannot be connected
by a communication wire path.
The system communicates
utilizing a standard, dedicated
phone service.
Page 1
2.0 TOOLS & SUPPLIES:
(Installer Supplied)
The installer needs access to the following tools and supplies for installation of the
Weather Station.
TOOLS REQ’D.
Shovel
SUPPLIES REQ’D.
Rake
Wire Strippers
Screw driver, regular blade
Flat Metal File
Screw driver, thin regular blade
Wheelbarrow
Screw driver, Phillips head
Hand Saw
Open End Wrench 7/16”
(2) - Open End Wrench 9/16”
Open End Wrench ½”
Open End Wrench 3/8”
Claw Hammer
Magnetic Compass
Tape Measure 12’ - 20’
Matr’l. for Concrete Base Form:
(4) 12” Wood Stakes
(1) 2”x 4”x 10’ piece of wood
(8) 8p double-head nails
(8)16p double-head nails
20 ft. of form wire
½ yard of concrete
6 Ft. Step Ladder
Concrete trowel & edger
Saw Horse
Wire
Fish Tape or small dia. rope
(2) Standard Size (12” x 18”)
Rectangular Valve Boxes
(3) MGP-1 Maxi Grounding Plate
Assembly
(5) MSP-1 Maxi Surge Arrestor (Pipe
Type) (for “PRO-SH” model ONLY).
(6) 5/8” Dia. X 8’-0” copper clad
grounding rods
#10 Gauge or larger bare copper
grounding wire - length as required.
Brass Grounding Clamps - as required
(20) 3-M model DBY or DBR Direct
Burial splice kits or 3-M Scotch-lok
3500 series Connector Packs.
Belden #9883 or PE-39 direct burial,
communication cable - length as
required.
(2) Lengths of type UF power wire
(white and black) - size and length as
required.
(1) 4” x 4” electrical junction box with
cover plus connectors as required for
transformer mounting.
(2) Open Spade, crimp-on type
connectors - for connecting power
wiring to transformer.
3.0
Page 2
WEATHER STATION SITE SELECTION:
Site selection for the Weather Station is
one of the most crucial steps in a
successful installation and an efficiently
operating irrigation system. The site
selection will greatly impact the
accuracy of the meteorological data
collected by the station. The site
selection process has many constraints
placed on it, and although the “perfect”
site is often non-existent, the following
generalities should be kept in mind.
In general, the site should be
representative of the general area of
interest and reflect the general
conditions of the project’s turf. The
more “typical” the site, in this regard,
the more useful will be the information
gathered. The site should also be away
from the influence of obstructions such
as buildings, trees, etc.
The weather station should not be
located where sprinkler irrigation water
will strike sensors or instrument
enclosure. The turf around the weather
station needs to be irrigated however - so
it is recommended that half-circle
sprinklers be placed around the base of
the weather station and ”throwing OUT’
away from the weather station. In this
way the turf can be irrigated and at the
same time water can be kept off the
sensors and instrument enclosure of the
weather station.
The sensors of the weather station
should be eight (8) to ten (10) feet above
the turfgrass. Remember that the roof
of a building IS NOT a good site for the
weather station.
The weather station does NOT need to
be “hidden”. The Rain Bird weather
station has been engineered to be
aesthetically pleasing. The urge to
“hide” the station needs to be balanced
with the selection of the most “typical”
turfgrass area. The station should NOT
negatively impact the turfgrass
environment or utility. In fact, many
installations prominently display the
Weather Station to demonstrate their
commitment to water conservation.
If the site may be prone to vandalism,
an open, chain-link, 6 foot high
security fence with a lockable access
gate should be placed around the
weather station. The fence shall be a
minimum of eight (8) feet out from the
weather station on all sides and should
be a type that will not interfere with the
accuracy of the sensors.
In your selection of a site - try to avoid
sites on or near open dirt fields and
asphalt parking areas. These sites are
prone to high invective heats that can
distort the information. Any areas that
are within 90 to 100 feet “up wind” of
the weather station can adversely affect
the weather station reading accuracies.
The requirements of each weather
station sensor must be considered when
selecting the proper location for a
weather station site. In addition to these
generalities, each sensor has its own
specialized constraints. While complete
information is available, upon special
request, for each individual sensor, the
following are the highlights of each.
Page 3
(a) TEMPERATURE AND
RELATIVE HUMIDITY:
Sensors should be located over an open
level turf area at least 30 feet in
diameter. The surface should be the
typical turfgrass of the area in interest.
Sensors should be located a distance
away of at least four (4) times the height
of any nearby obstruction and at least 90
feet from large paved areas. Sensors
should be protected from thermal
radiation, and adequately ventilated.
Situations to avoid include:
• large industrial heat sources
• rooftops
• steep slopes
• sheltered hollows
• high vegetation
• shaded areas
• top of a hill
• bottom of a swale
• swamps
• areas where snow drifts occur
• low places holding standing
water
(b) SOLAR RADIATION:
Pyranometers should be located to avoid
shadows on the sensor at any time.
Mounting it on the southern most
portion (northern hemisphere) of the
weather station will minimize the chance
of shading from other weather station
structures. Reflective surfaces and
sources of artificial radiation should be
avoided. The height at which the sensor
is mounted is not critical.
Page 4
(c ) PRECIPITATION
A rain gage should be located over level
ground that is covered with short grass
or gravel. In open areas, the distance to
obstructions should be two to four times
the height of the obstruction.
The height of the opening should be as
low as possible, but should be high
enough to avoid splashing from the
ground.
The gage must be mounted above the
average level of snow accumulation in
areas that experience significant
snowfall.
Standard measurement heights:
1.0 meter +/- 1.0 cm (AASC)
30.0 centimeter minimum
(WMO, EPA)
(d) DETERMINING TRUE
NORTH FOR WIND
VANE OREINTATION
Magnetic declination, or other methods
to find True North, should be
determined prior to installing the
weather station. True North is usually
found by reading a magnetic compass
and applying the correction for magnetic
declination. (Other methods employ
observations using the North Star or the
sun, and are discussed in the Quality
Assurance Handbook for Air Pollution
Measurement Systems, Volume IV Meteorological Measurements.) The
magnetic declination is the number of
degrees between True North and
Magnetic North. Magnetic declination
for a specific site can be obtained from a
USFA map, local airport, or through a
computer service offered by the USFS
called GEOMAG (see page 7). A
general map showing magnetic
declination for the contiguous United
States is shown below in FIGURE 2.
Declination angles east of True North
are considered negative and are
subtracted from 0 degrees to get True
North. Declination angles west of True
North are considered positive and are
added to 0 degrees to get True North.
For example, the declination for Logan,
Utah is 16 degrees East. True North is
360 degrees minus 16 degrees, or 344
degrees as read on a compass.
REFER TO NEXT PAGE FOR FIGURE 2
Page 5
FIGURE 2 - MAGNETIC DECLINATION FOR THE
CONTIGUOUS UNITED STATE
Page 6
PROMPTS FROM GEOMAG
GEOMAG is accessed by phone with a
PC and telephone modem and a
communications program such as Pro
Comm or Windows 95 Hyperterminal.
GEOMAG prompts the caller for site
latitude, longitude and elevation, which
it uses to determine the magnetic
declination and annual change. The
following information, menu and
prompts are from GEOMAG.
Username: QED
[RETURN}
Main Menu:
Type
Q for Quick Epicenter
Determinations (QED)
L for Earthquake Lists (EQLIST)
M for Geomagnetic Field
values (GEOMAG)
X to log out
GEOMAG is a user-friendly program
that provides estimates of the
geomagnetic field elements, including
declination and total field intensity,
based upon Magnetic Models. The
program is accessible by modem or
through the Internet.
Modem Access:
Modem settings: No parity, 8 data bits
and 1 stop bit (i.e., N81).
Telephone numbers:
Phone Number Baud Rates
303-273-8672 2400
303-273-8673 1200
303-273-8678 1200
Upon carrier-signal detection, press
Return once or twice.
ENTER program option: “M”
Would you like information on how to
run GEOMAG (Y/N)? Enter N
OPTIONS:
1 = Field Values (D,I,H,X,Z,F)
2 = Magnetic Pole Positions
3 = Dipole Axis and Magnitude
4 = Magnetic Center [1] : 1
Display values twice [N]: press return
Name of field model [USCON90]:
press return
Date [current date]:
press return
Latitude :42/2 N
Longitude : 111/51/2W
Elevation : 4454 ft
If you are using one of the commercial
numbers, the following prompts will
appear. Type the responses shown
(followed by pressing RETURN):
GLDSV1> c neis
[RETURN]
Page 7
Example of report generated by
GEOMAG:
Model: USCON90 Latitude: 42/2 N
Date: 7/27/93 Longitude: 111/51/2W
Elevation: 4454.0 ft
Declination is:
deg min
15 59.6
Annual change:
deg min
0 -6.1
EXITING:
press “Cntrl-Z” to exit GEOMAG
When the main menu reappears either
select another option or Type “X” to log
out.
If you used one of the commercial
numbers, the GLDSV1> prompt will
reappear.
Type “LO” to disconnect.
Use of GEOMAG is free (except for
telephone charges). If possible, please
avoid using GEOMAG between 9 a.m.
and 4 p.m., mountain time, Monday
through Friday.
The declination in the example above is
listed as 15 degrees and 59.6 minutes.
Expressed in degrees, this would be
15.99 degrees. As shown in FIGURE 2,
the declination for Utah is east, so True
North for this site is 360 - 15.99, or 344
degrees. The annual change is -6.1
minutes.
Refer to FIGURE 3 below:
FIGURE 3 - DECLINATION ANGLES
Page 8
4.0 WEATHER STATION CONCRETE BASE:
SUPPLIED COMPONENTS
(1) 2” x 4” x 10’-0” piece of
forming lumber
(3) ½” x 12” long “L” Anchor
Bolts
(9) ½” Nuts
(3) Flat Steel Washers
(4) 16p Double Headed nails
10’-0 “ length of form wire
½ yard of concrete
Duct Tape
(1) Stainless Steel Template
(1) 1 ½” Dia. Long Sweep
TOOLS REQUIRED
Elbow
Claw Hammer
INSTALLER SUPPLIED
Hand Saw
Saw Horse
Shovel
Pliers & Wire Cutters
INSTALLATION:
For the following procedures - Refer to FIGURE 4 below.
1.0 The Tower for the “PRO”
4.0 Construct the concrete form
Weather Station - attaches to a user
supplied poured concrete
foundation - constructed as shown
in FIGURE 4 below.
2.0 Dig the required foundation
hole - with a 24” square top
and slanting outward sides, to the
bottom of 32” square. The
“Sloping” sides of the foundation are
very IMPORTANT in providing the
necessary support to the weather
station tower, in preventing it from
5.0 Place a piece of duct tape
“leaning” or falling over, due to
wind load on the station.
3.0 Determine the proper location of the
long sweep elbow and dig a small
cavity to accept the end of the elbow
that will protrude beyond the
concrete base.
with 2” x 4” lumber and 16p
double-headed nails.
Center the form over the dug
hole. Adjacent to the long
legs of the form that extend
beyond the hole, drive four
stakes into the soil. Level
the form. Secure the form
to the stakes with 8p nails making sure that the form
remains “level”.
over one end of the 1 ½”
diameter long sweep elbow.
Insert the elbow into the
hole, with the taped end
into the small cavity that
you have dug on one side of
the hole.
Page 9
6.0 Insert the other end of the long
sweep elbow into the center hole in
the stainless steel template. Tape
the end of the elbow with duct tape.
7.0 Take the three ½” x 12” long “L”
anchor bolts and install two (2) hex
huts on to each bolt. Insert one in
each of the holes in the template and
install one of the flat washers and a
nut to secure the anchor bolt to the
template.
Refer to FIGURE 5.
8.0 Take the form wire and cut it into
two (2) equal lengths. Attach one
end of one of the wires to one of the
16p nails on the form. String the
wire up over the form and to the long
sweep elbow - making a turn around
it. Continue the wire over to the
16p nail at the other corner of the
form (located on the same side of the
form as the other nail) and centering
the template and elbow attach the
wire securely to the nail. Repeat
this same process with the other
piece of form wire - going to the
opposite nails and further securing
the template, elbow and anchor bolts
in the form.
9.0 Steady the template assembly by
putting a 2” spacer between the
template and the top of the form.
Pour the concrete into the hole and
form - it will require approximately
½ yard - screed the concrete level
with the top of the form. Check to
make sure the template is correctly
orientated and centered. The bottom
of the anchor bolt threads should be
about ½” above the top of the
concrete. Check to be sure the
template is “level” in two (2)
dimensions. Use a trowel and edger
to finish the concrete.
BE SURE THAT YOU HAVE THE
TEMPLATE PROPERLY
ORIENTATED IN RESPECT TO
“NORTH”. Refer to FIGURE 4.
The template should have the two (2)
bolt holes, that are parallel with one
side of the template, on the north
side of the base.
10.0 Wait 24 hours before removing the
concrete form. Wait 7 days before
mounting the weather station to the
base.
REFER TO NEXT PAGE FOR FIGURES 4 & 5
Page 10
FIGURE 4 - CONCRETE BASE DETAIL
FIGURE 5 - ANCHOR BOLT/TEMPLATE DETAIL
Page 11
5.0 EXTERNAL WIRING TO WEATHER STATION: ( Refer to FIGS. 6 & 7)
WIRING VALVE ACCESS BOX
At the base of the Weather Station and
as near to the base as feasibly possible,
dig a hole large enough to install a
standard 18” x 24” rectangular valve box
and cover. The valve box shall
accommodate all wiring connections,
one rod of a 3-rod grounding grid,
MGP-1 grounding plate assemblies and
MSP-1 surge arrestors.
WEATHER STATION
POWER WIRING
Furnished as part of the Weather Station
is a 120VAC to 16VAC power
transformer. This transformer can be
located in the pedestal of a field satellite
controller that is in the near proximity of
the weather station or some other
convenient weather proof location.
Install the transformer in a 4”x 4” metal
electrical box with cover. Connect the
120VAC power wires of the transformer
to a source of 120VAC power that is not
easily turned off. To the output of the
transformer, connect a pair of UF wires,
of proper size, using “crimp-on” open
spade connectors.
The power wires shall be direct buried
and run over to the weather station.
Connect the 16VAC power wires to the
“LINE” side of an MSP-1 surge
arrestor, which shall be mounted in an
MGP-1 grounding plate assembly. The
MGP-1
grounding plate assembly shall be
securely mounted on a 5/8” dia. copper
clad, ground rod - one of a 3-rod
grounding grid.
NOTE ! The minimum voltage to
the transformer shall be not less than 112
volts.
Wire sizing shall be in accordance with
the chart given below.
Wire shall be Type “UF” (underground
feeder cable) with PVC insulation. The
16VAC power is used to provide
constant charging of the battery within
the weather station, through the battery
charging circuit.
WIRE SIZING CHART
WIRE SIZE DISTANCE
(feet)*
18 500
16 800
14 1275
12 2000
10 3250
8 5100
* Transformer to Weather Station
The “EQUIPMENT’ side of this MSP-1
surge arrestor shall be connected to
“red” and “black” wires of the 20’power
wire cable, which is furnished as part of
Page 12
the weather station, and MARKED
“P/N 9922”. This cable shall be routed
through the 1 ½” dia. long sweep elbow
to the base of the weather station. All
wire connections and splices in the
power wiring shall be made using 3-M
DBY direct burial connectors. DO
NOT apply power to transformer at this
time.
WEATHER STATION
COMMUNICATION WIRING
DIRECT CONNECTED - USING
SHORT HAUL MODEMS:
(MODEL PRO-SH - Only)
cable furnished with the weather station
and marked P/N 9720 “ET SHORT
HAUL” “COMM”.
The RED (+RCV) & BLACK (-RCV)
pair shall be connected to the RED &
BLACK wires respectively, at the
“LINE” end of the other MSP-1 surge
arrestor. The RED (+RCV) and the
BLACK (-RCV) wires from the
“EQUIPMENT” end of this MSP-1
surge arrestor shall be connected to the
RED (+RCV) and the BLACK (-RCV)
wires of the communication cable
furnished with the weather station and
marked P/N 9720 “ET SHORT HAUL”
“COMM”.
Coming from the Central location,
furnish and install a Belden #9883,
Direct Burial Type, communication
cable over to the weather station
location. The Belden cable shall consist
of three (3) twisted pair of wires (20
Gauge), a bare copper drain wire and an
aluminum shield. The three (3) twisted
pair shall be color coded as follows; 1
pair “black” and “white”, 1 pair “black”
and “green” and 1 pair “black” and
“red”.
The BLACK (-XMT) & GREEN
(+XMT) pair shall be connected to the
BLACK & RED wires respectively, at
the “LINE” end of one of the MSP-1
surge arrestors. The BLACK (-XMT)
and the RED (+XMT) wires from the
“EQUIPMENT” end of this MSP-1
surge arrestor shall be connected to the
WHITE (-XMT) and the GREEN
(+XMT) wires of the communication
This communication cable shall be
routed through the 1 ½” diameter long
sweep elbow to the base of the weather
station. All wire connections and
splices in the communication wiring
shall be made using 3-M DBY direct
burial connectors. DO NOT attempt to
use any other type connectors as
communication signal may be impaired
and poor communication resulting.
GROUNDING
COMMUNICATION CABLE
The bare copper drain wire of the Belden
cable shall be grounded to the grounding
rod, using a brass ground wire clamp.
IMPORTANT ! DO NOT ground the
drain wire at the Central end of the cable
- just leave the drain wire un-used.
Page 13
FIGURE 6 - EXTERNAL WIRING DETAIL AT THE
PRO - SH WEATHER STATION
Page 14
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