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Campbell ET107 Instruction manual
INSTRUCTION MANUAL
ET107 Weather Station
Revision: 4/14
C o p y r i g h t © 1 9 9 3 - 2 0 1 4
C a m p b e l l S c i e n t i f i c , I n c .
Limited Warranty
“Products manufactured by CSI are warranted by CSI to be free from defects in
materials and workmanship under normal use and service for twelve months
from the date of shipment unless otherwise specified in the corresponding
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by CSI, are warranted only to the limits extended by the original manufacturer.
Batteries, fine-wire thermocouples, desiccant, and other consumables have no
warranty. CSI’s obligation under this warranty is limited to repairing or
replacing (at CSI’s option) defective Products, which shall be the sole and
exclusive remedy under this warranty. The Customer assumes all costs of
removing, reinstalling, and shipping defective Products to CSI. CSI will return
such Products by surface carrier prepaid within the continental United States of
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(port of entry) per Incoterms ® 2010. This warranty shall not apply to any
Products which have been subjected to modification, misuse, neglect, improper
service, accidents of nature, or shipping damage. This warranty is in lieu of all
other warranties, expressed or implied. The warranty for installation services
performed by CSI such as programming to customer specifications, electrical
connections to Products manufactured by CSI, and Product specific training, is
part of CSI's product warranty. CSI EXPRESSLY DISCLAIMS AND
EXCLUDES ANY IMPLIED WARRANTIES OF MERCHANTABILITY
OR FITNESS FOR A PARTICULAR PURPOSE. CSI hereby disclaims,
to the fullest extent allowed by applicable law, any and all warranties and
conditions with respect to the Products, whether express, implied or
statutory, other than those expressly provided herein.”
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Products may not be returned without prior authorization. The following
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CAMPBELL SCIENTIFIC, INC.
RMA#_____
815 West 1800 North
Logan, Utah 84321-1784
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concerns for our employees.
Table of Contents
PDF viewers: These page numbers refer to the printed version of this document. Use the
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1. Preparation and Siting................................................ 1
1.1
1.2
1.3
1.4
1.5
Siting and Exposure ............................................................................. 1
1.1.1 Wind Speed and Direction ............................................................ 1
1.1.2 Temperature and Relative Humidity ............................................. 1
1.1.3 Solar Radiation.............................................................................. 2
1.1.4 Soil Temperature ........................................................................... 2
Installation Tasks ................................................................................. 3
1.2.1 Indoors .......................................................................................... 3
1.2.2 Outdoors........................................................................................ 5
Tools Required ..................................................................................... 5
1.3.1 Tools for Pole Installation ............................................................. 5
1.3.2 Tools for Instrumentation and Maintenance ................................. 5
Supplies for Power and Communications Options ............................... 6
Determining True North for Wind Vane Orientation ........................... 6
1.5.1 Web Calculator ............................................................................. 8
2. Hardware Installation ............................................... 10
2.1
Base Foundation ................................................................................. 11
2.1.1 Supplied Components ................................................................. 11
2.1.2 Installation................................................................................... 11
2.1.3 AC Power Installation ................................................................. 13
2.2
Tower/Pole ......................................................................................... 13
2.2.1 Supplied Components ................................................................. 13
2.2.2 Installation................................................................................... 13
2.2.3 Tower Grounding ........................................................................ 15
2.2.3.1 Supplied Components....................................................... 15
2.2.3.2 Grounding Procedure ....................................................... 15
2.3
Enclosure............................................................................................ 16
2.3.1 Enclosure Installation .................................................................. 17
2.4
Crossarm and Sensor Installation ....................................................... 18
2.4.1 Components ................................................................................ 18
2.4.2 Crossarm Installation .................................................................. 18
2.4.3 RH and Temperature Radiation Shield ....................................... 19
2.4.4 034B Wind Sensor (Wind Sensor Option –MW) ........................ 20
2.4.5 Gill WindSonic 2-D Ultrasonic Wind Sensor (Wind Sensor
Option –GW) ........................................................................... 22
2.4.5.1 Changing the Jumper ........................................................ 22
2.4.5.2 Attachment to Sensor Arm ............................................... 24
2.4.6 Rain Gage.................................................................................... 26
2.4.7 Pyranometer ................................................................................ 27
2.4.8 107-LC or 108-LC Soil Temperature Sensor (Optional) ............ 28
2.4.9 CS616-LC Water Content Sensor (Optional).............................. 28
2.4.9.1 Changing the Jumper ........................................................ 28
2.4.9.2 Site Installation ................................................................. 30
2.4.10 CS650-LC or CS655-LC Soil Water Content Sensor Plus
(Optional) ................................................................................ 31
i
Table of Contents
2.5
2.6
2.7
2.8
2.9
2.4.11 Sensor Connections .................................................................... 31
2.4.12 Sensor Verification and Clock Set ............................................. 33
Communication Peripherals .............................................................. 34
2.5.1 Direct Connect to ET107 Station ............................................... 34
2.5.2 Phone Modem ............................................................................ 35
2.5.2.1 Internal Installation .......................................................... 36
2.5.2.2 External Installation ......................................................... 37
2.5.3 Short-Haul Modem ..................................................................... 37
2.5.3.1 Internal Installation .......................................................... 38
2.5.3.2 External Installation ......................................................... 39
2.5.4 RF450 900 MHz, 1 Watt Spread Spectrum Radio ..................... 40
2.5.4.1 Power Considerations ...................................................... 40
2.5.4.2 Default Configuration ...................................................... 41
2.5.4.3 Internal Installation .......................................................... 41
2.5.4.4 External Installation ......................................................... 43
2.5.4.5 Base Radio Installation .................................................... 49
2.5.5 19256 ET Cell Phone Accessory Kit .......................................... 51
2.5.5.1 Cellular Modems Available from Campbell Scientific.... 51
2.5.5.2 Antenna ........................................................................... 52
2.5.5.3 Power Considerations ...................................................... 52
2.5.5.4 Establishing Cellular Service and Configuring the
Cellular Modem ........................................................... 52
2.5.5.5 Internal Installation .......................................................... 52
2.5.5.6 External Installation ......................................................... 53
Lightning Rod Installation ................................................................. 55
Solar Panel Installation ...................................................................... 57
Battery Installation ............................................................................ 59
Restraining Cables and Sealing/Desiccating Enclosure .................... 60
2.9.1 Restraining Cables...................................................................... 60
2.9.2 Sealing and Desiccating the Enclosure....................................... 61
3. ET Software ...............................................................62
4. Maintenance, Troubleshooting, and Schematics ...63
4.1
Maintenance ...................................................................................... 63
4.1.1 Pole............................................................................................. 63
4.1.2 Power Supply ............................................................................. 63
4.1.2.1 Batteries ........................................................................... 63
4.1.2.2 Solar Panel ....................................................................... 63
4.1.3 Desiccant .................................................................................... 63
4.1.4 Sensor Maintenance ................................................................... 64
4.1.4.1 Procedure for Removing RH Chip................................... 66
4.1.5 CR1000M Module...................................................................... 66
4.2
Troubleshooting................................................................................. 67
4.2.1 No Response Using the CR1000KD Keypad ............................. 67
4.2.2 No Response from Datalogger through SC32B, RAD Modem,
or Phone Modem..................................................................... 68
4.2.3 NAN or ±INF Displayed in a Variable....................................... 69
4.2.4 Unreasonable Results Displayed in a Variable........................... 69
4.2.5 NAN or ±INF Stored in a Data Table......................................... 69
4.2.6 Communication Problems when using an RF450 Radio ............ 69
4.2.7 Gill WindSonic1-ET Diagnostic Diagnostic Codes ................... 71
ii
Table of Contents
4.3
Schematics of Connectors .................................................................. 72
4.3.1 Sensor Schematics....................................................................... 72
4.3.2 Power Schematics ....................................................................... 77
4.3.3 Communication Modems Schematics ......................................... 77
Appendices
A. ET107 Maintenance Log ......................................... A-1
B. PS24 24 Ahr Power Supply and 10 x 12 inch
Enclosure .............................................................. B-1
B.1
B.2
PS24 Components ............................................................................ B-1
Installation ........................................................................................ B-4
C. Exploded Views ...................................................... C-1
C.1
C.2
Enclosure.......................................................................................... C-1
Crossarm .......................................................................................... C-2
D. Default Programs .................................................... D-1
D.1
D.2
Program for ET107 with Gill WindSonic ....................................... D-1
Program for ET107 with 034B ........................................................ D-3
E. Step-down Transformer Installation ..................... E-1
Figures
1-1.
1-2.
1-3.
1-4.
1-5.
1-6.
1-7.
1-8.
2-1.
2-2.
2-3.
2-4.
2-5.
2-6.
2-7.
2-8.
2-9.
2-10.
2-11.
2-12.
2-13.
Effect of structure on wind flow........................................................... 2
Cut flap packing tape ........................................................................... 3
Shipping box packaging ....................................................................... 3
ET107 with the Met One 034B-ETM Wind Sensor, top layer ............. 4
ET107, bottom layer............................................................................. 4
Magnetic declination for the contiguous United States (2004) ............ 7
Declination angles east of True North are subtracted from 0 to get
True North ........................................................................................ 8
Declination angles west of True North are added to 0 to get True
North ................................................................................................. 8
ET tower installation with currently-available AC power option ...... 10
ET tower base installation .................................................................. 12
Cut-away view shows anchor bolt and conduit placement in cement
pad .................................................................................................. 12
Transparent view shows raising and grounding the ET tower ........... 14
Close up of ground rod and 4 AWG cable ......................................... 15
ET107 instrumentation mounted on the ET tower ............................. 16
Enclosure spacing above pole ............................................................ 17
ET107 sensor arm mounting .............................................................. 18
Temperature/relative humidity sensor with yellow protective cap..... 19
Temperature/relative humidity sensor without yellow protective
cap .................................................................................................. 20
Wind and RH/temperature sensor installation .................................... 21
034B mounting to pipe ....................................................................... 21
Screws that secure the electronics cover ............................................ 23
iii
Table of Contents
2-14.
2-15.
2-16.
2-17.
2-18.
2-19.
2-20.
2-21.
2-22.
2-23.
2-24.
2-25.
2-26.
2-27.
2-28.
2-29.
2-30.
2-31.
2-32.
2-33.
2-34.
2-35.
2-36.
2-37.
2-38.
2-39.
2-40.
2-41.
2-42.
2-43.
2-44.
2-45.
2-46.
2-47.
2-48.
2-49.
2-50.
2-51.
4-1.
4-2.
4-3.
4-4.
4-5.
4-6.
4-7.
4-8.
4-9.
4-10.
Removal of the electronics cover ...................................................... 23
Jumper set for WindSonic1 ............................................................... 24
Gill WindSonic mounting shaft ......................................................... 25
Gill WindSonic connected to cable ................................................... 25
Remove rubber band from tipping mechanism.................................. 26
Pyranometer leveling ......................................................................... 27
Remove red or green pyranometer cap .............................................. 27
Screws that secure the electronics cover ........................................... 29
Removal of the electronics cover ...................................................... 29
Jumper set for CS616 ........................................................................ 30
Position of sensor bulkhead connectors............................................. 32
Connecting sensor cabling to enclosure ............................................ 33
Close-up of the terminals and 9-pin ports in the ET107 (battery not
shown)............................................................................................ 35
Phone modem mounting and connections (battery not shown) ......... 36
Short-haul modem mounting and connection .................................... 38
Short-haul modem wiring diagram .................................................... 40
RF450 in ET107 (battery not shown) ................................................ 42
Attach ribbon cable to RF450 CS I/O port ........................................ 42
Loosely wire tie antenna cable .......................................................... 43
Loosely drape antenna cable over back of enclosure ........................ 44
Slide antenna bracket U-bolt around back of the pole ....................... 45
Antenna bracket mounted to pole ...................................................... 46
Mount antenna saddle bracket ........................................................... 46
Yagi antenna mounted to saddle bracket ........................................... 47
Wire tie antenna cable to Yagi antenna and to pole .......................... 48
Wire tie locations for Omni antenna installation ............................... 49
Base RF450 installation ..................................................................... 50
A base radio installed in an office ..................................................... 51
RavenXT cellular modem mounted inside the ET107 (power
supply not shown). ......................................................................... 53
Lightning rod bracket installation...................................................... 55
Grounding to lightning rod clamp ..................................................... 56
Solar panel mounting and cabling ..................................................... 57
Side view of solar panel shows tilt angle........................................... 58
PS100 battery installation .................................................................. 59
PS100 to ET107 enclosure wiring ..................................................... 59
Cabling strapped to wire tie harness .................................................. 60
Connector cover in place ................................................................... 61
Desiccant installation......................................................................... 62
Exploded view of HMP60-ETS (as shipped) .................................... 65
RF450 front side view ....................................................................... 69
Schematic of HMP60-ETS RH and Temperature Probe and
connector Temp/RH ....................................................................... 72
Schematic of 034B-ET Wind Speed and Direction Probe and
connector WS/WD ......................................................................... 73
Schematic of Gill WindSonic1-ET Wind Sensor, soil temperature
sensor (107-LC or 108-LC), and connector Temp/Sonic ............... 73
Schematic of CS305-ET Solar Radiation Sensor and connector
Solar Radiation .............................................................................. 74
Schematic of TE525-ET Rain Sensor and connector Rain (Precip) .. 75
Schematic of 107-LC or 108-LC Temperature Probe or CS616-LC
Soil Volumetric Water Content Sensor and connector Temp/
CS616 ............................................................................................ 76
Schematic of CS650-LC or CS655-LC ............................................. 76
Schematic of solar panel and connector Power ................................. 77
iv
Table of Contents
4-11. Schematic of short haul or phone modem and connector COMM ..... 77
B-1. Environmental enclosure with CH100, power cable, and battery
bracket .......................................................................................... B-1
B-2. 24 Ahr battery and battery cable ...................................................... B-2
B-3. Enclosure supply kit ......................................................................... B-3
B-4. Strut clamps in brackets ................................................................... B-4
B-5. Both strut clamps and brackets on ET107 pole ................................ B-5
B-6. Top clamp hook side up ................................................................... B-6
B-7. Enclosure mounted on ET107 pole .................................................. B-7
B-8. Enclosure locking mechanism .......................................................... B-8
B-9. Mounted solar panel ......................................................................... B-9
B-10. Procedure for installing and connecting battery ............................. B-11
E-1. ET tower installation with step-down transformer ........................... E-1
Tables
4-1.
4-2.
4-3.
CR1000 Lithium Battery Specifications ............................................ 67
Multi-Point Network LED Status ....................................................... 70
Gill WindSonic Diagnostic Codes ..................................................... 72
v
Table of Contents
vi
ET107 Weather Station
1.
Preparation and Siting
1.1
Siting and Exposure
CAUTION
If any part of the weather station comes in contact with
power lines, you could be killed. Contact local utilities for
the location of buried utility lines before digging or driving
ground rods.
Selecting an appropriate site for the weather station is critical in order to obtain
accurate meteorological data. In general, the site should be representative of
the general area of interest, and away from the influence of obstructions such
as buildings and trees.
The weather station should not be located where sprinkler irrigation water will
strike sensors or instrument enclosure.
Some general guidelines for site selection are listed below, which were
condensed from EPA (1988)1, WMO (1983)2, and AASC (1985)3 publications.
1.1.1 Wind Speed and Direction
Wind sensors should be located over open level terrain, and at a distance of at
least ten times (EPA) the height of any nearby building, tree or other
obstruction, as illustrated in FIGURE 1-1.
1.1.2 Temperature and Relative Humidity
Sensors should be located over an open level area at least 9 m (29.5 ft) (EPA)
in diameter. The surface should be covered by short grass, or where grass does
not grow, the natural earth surface. Sensors should be located at a distance of
at least four times the height of any nearby obstruction and at least 30 m
(98.43 ft) (EPA) 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
• swamps
• areas where snow drifts occur
• low places holding standing water after rains
1
ET107 Weather Station
1.1.3 Solar Radiation
Pyranometers should be located to avoid shadows on the sensor at any time.
Mounting it on the southern most (northern hemisphere) portion 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.
1.1.4 Soil Temperature
The measurement site for soil temperature should be at least 1 m2 (10.76 ft2) and
typical of the surface of interest. The ground surface should be level with respect
to the immediate area of 10 m (32.81 ft) radius.
Standard measurement depths:
10.0 cm ± 1.0 cm (4 in ± 0.4 in) (AASC)
5.0 cm, 10.0 cm, 50.0 cm, 100.0 cm (2 in, 4 in, 19.7 in, 39.4 in) (WMO)
FIGURE 1-1. Effect of structure on wind flow
2
ET107 Weather Station
1.2
Installation Tasks
1.2.1 Indoors
•
Immediately upon receipt of your shipment…
⇒ Weather station is packed in the shipping box in layers. See FIGURE
1-2, FIGURE 1-3, FIGURE 1-4, and FIGURE 1-5.
⇒ Immediately upon receipt of your shipment…
Open shipping carton(s).
Set the large weather station carton down lengthwise on a floor or
table top. Position the box as shown in FIGURE 1-2.
Cut the tape along the edge of the lower flap first. See FIGURE 1-2.
Cut the tape around the remaining flaps BUT only cut one layer deep.
Lift up the cardboard flaps exposing the top layer of foam as shown in
FIGURE 1-3.
⇒ Check contents against invoice and shipping checklist. Contact CSI
immediately about any shortages.
Cut Lower Flap
Edge First
FIGURE 1-2. Cut flap packing tape
Top Packing
Foam Layer
Middle Packing
Foam Layer
Bottom Packing
Foam Layer
ET107,
Top Layer
FIGURE 1-3. Shipping box packaging
ET107,
Bottom Layer
3
ET107 Weather Station
Crossarm with Rain, Solar, and
Temp/%RH Sensors
Enclosure
Wind Set
Instruction
Manual
Cardboard
Containing Wind Vane
FIGURE 1-4. ET107 with the Met One 034B-ETM Wind Sensor, top
layer
Mounting Template Grounding Wire
and Enclosure Desiccant Packs
Mounting Bolts
and Hardware
Enclosure
Battery
2-Piece Pole
Grounding and
Lightning Rod
Temp/%RH
Gill Radiation
Shield
PVC Swept
Elbow Conduit
AC Transformer
and Cabling
Communication
Option Cabling
FIGURE 1-5. ET107, bottom layer
⇒ Securely tape box shut if transporting entire station to another site. If
at the main site, remove any communication components that are
installed at the calling computer. Repackage remaining components
for transport to field site.
Solar panel and RF items (if any) will be packed in a separate box.
4
ET107 Weather Station
•
Several days prior to the planned installation date…
⇒ Collect tools and site information (Section 1.3, Tools Required, and
Section 1.1, Siting and Exposure)
⇒ Install datalogger support software (Section 3, ET Software)
1.2.2 Outdoors
•
Locate suitable site (Section 1.1, Siting and Exposure)
•
Prepare concrete base (Section 2, Hardware Installation)
•
ET107 Installation:
⇒ Place instrumentation enclosure on the ET pole. Slide enclosure to the
top of the pole and secure with correct orientation (Section 2.3,
Enclosure).
1.3
Tools Required
Tools required to install and maintain a weather station are listed below.
1.3.1 Tools for Pole Installation
ET Pole
Shovel
Rake
Open end wrenches: 3/8 in, 7/16 in, 1/2 in, (2) 9/16 in
Magnetic compass
6 ft Step ladder
Tape measure (12 ft to 20 ft)
Claw hammer
Level (24 in to 36 in)
Hand saw
Materials for concrete form:
(4) 1 in x 2 in x 12 in stakes
(2) 2 in x 4 in x 96 in lumber
(12) 8p double-head nails
(8) 16p double-head nails
20 ft form wire
1/2 Yard concrete
Concrete trowel, edger
Electrical Fish tape or 20 feet of small diameter rope
Wheelbarrow
1.3.2 Tools for Instrumentation and Maintenance
ET Pole
Lock and key for enclosure
Magnetic declination angle
Magnetic compass
Straight bit screwdrivers (small, medium, large)
Phillips-head screwdrivers (small, medium)
Small diagonal side-cutters
Needle-nose pliers
5
ET107 Weather Station
Wire strippers
Pocket knife
Calculator
Volt / Ohm Meter
Electrical Tape
Step ladder (6 ft)
Station manuals
Station log and pen
Open end wrenches: 3/8 in, 7/16 in, 1/2 in, 9/16 in, 15/16 in
Socket wrench and 7/16 inch deep well socket
Adjustable wrench
Pliers
Conduit and associated tools (as required)
Felt-tipped marking pen
Claw hammer
Pipe wrench (12 in)
1.4
Supplies for Power and Communications Options
AC Power
Wire, conduit, and junction boxes as needed (see FIGURE 2-1).
NOTE
User supplies valve box at base of station and weatherproof
enclosure for transformer. See FIGURE 2-1.
Phone Modem
Phone modem at the central computer.
Dedicated single twisted pair with shield phone line to the weather station
valve/junction box (see FIGURE 2-1).
Short-Haul Modem
Direct burial cable with a minimum of 2-twisted pairs with shield (minimum 5
conductors total) to travel from the weather station to the central computer
junction box. Direct burial armored cable may be required for rocky soils or
rodents (Anixter pn F-02P22BPN (phone 847-677-2600)) or equivalent type
cable (see FIGURE 2-1).
RF450
Antenna for the ET107 station (pn 14205 Yagi antenna recommended). PS24
Power Supply and pn 18520 Hanger Kit if not using ac power (see Appendix
B, PS24 24 Ahr Power Supply and 10 x 12 inch Enclosure).
1.5
Determining True North for Wind Vane Orientation
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*; where
magnetic declination is the number of degrees between True North and Magnetic
North. The preferred method to obtain magnetic declination for a specific site is to
use a web calculator offered by NOAA (Section 1.5.1, Web Calculator). The
magnetic declination can also be obtained from a map or local airport. A general
map showing magnetic declination for the contiguous United States is shown in
FIGURE 1-6.
6
ET107 Weather Station
Declination angles east of True North are considered negative, and are subtracted
from 0 degrees to get True North as shown FIGURE 1-7. Declination angles west
of True North are considered positive, and are added to 0 degrees to get True
North as shown in FIGURE 1-8. For example, the declination for Logan, Utah is
12.4° East. True North is 360° – 12.4°, or 347.6° as read on a compass.
*
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 Measurements4.
FIGURE 1-6. Magnetic declination for the contiguous United States
(2004)
7
ET107 Weather Station
FIGURE 1-7. Declination angles east of True North are subtracted from
0 to get True North
FIGURE 1-8. Declination angles west of True North are added to 0 to
get True North
1.5.1 Web Calculator
The web calculator provides an easy way of determining magnetic declination
of a specific site. Since magnetic declination fluctuates with time, it should be
determined each time the wind sensor orientation is adjusted. The calculator
can be accessed at:
www.ngdc.noaa.gov/geomag-web
Below is an example for Logan, UT.
8
ET107 Weather Station
Magnetic declination in this example is 12º 24′ or 12.4º. A positive declination
is east, while a negative declination is west. As shown in FIGURE 1-6, the
declination for Logan, UT is east, so True North for this site is 360 – 12.4, or
347.6 degrees.
References
EPA, (1987). On-Site Meteorological Program Guidance for Regulatory
Modeling Applications, EPA-450/4-87-013. Office of Air Quality Planning
and Standards, Research Triangle Park, North Carolina 27711.
1
WMO, (1983). Guide to Meteorological Instruments and Methods of
Observation. World Meteorological Organization No. 8, 5th edition, Geneva,
Switzerland.
2
The State Climatologist, (1985) Publication of the American Association of
State Climatologists: Height and Exposure Standards for Sensors on
Automated Weather Stations, v. 9, No. 4 October, 1985.
3
EPA, (1989). Quality Assurance Handbook for Air Pollution Measurement
Systems, EPA Office of Research and Development, Research Triangle Park,
North Carolina 27711.
4
9
ET107 Weather Station
2.
Hardware Installation
DANGER
Do not install near power lines. If any part of the tower
comes in contact with power lines you could be KILLED.
Contact local utilities for the location of buried utility
lines before digging or driving grounding rods.
CAUTION
Do not fit the 3 meter ET Tower sections together until the
appropriate time. Once attached, they cannot be detached.
The ET Tower provides a support structure for mounting the ET107 weather
station components. FIGURE 2-1 shows a typical ET Tower installation
option. The tower is designed to withstand winds of 100 mph. The lightning
rod assembly is attached after the instrumentation enclosure is installed.
FIGURE 2-1. ET tower installation with currently-available AC power
option
10
NOTE
User supplies valve box at base of station and weatherproof
enclosure for transformer. See FIGURE 2-1.
NOTE
The AC power supply option at one time included a step-down
transformer instead of the power supply. Appendix E, Step-down
Transformer Installation, provides information about using the
step-down transformer.
ET107 Weather Station
2.1
Base Foundation
2.1.1 Supplied Components
(3) 5/8 inch Anchor L-Bolts
(9) 5/8 inch Nuts
(1) Anchor Template
Refer to Section 1, Preparation and Siting, for components supplied by
installer and bring components.
2.1.2 Installation
1.
The ET Tower attaches to a user supplied concrete foundation constructed
as shown in FIGURE 2-2.
2.
Construct the concrete form with 2 inch x 4 inch lumber and 16p nails.
3.
Assemble the template and anchor bolts. There should be two nuts below
and one nut above the template on each bolt.
4.
Clear an area large enough to set the form at the desired elevation.
5.
Dig a hole 2 feet x 2 feet x 2 feet. Lighter soils may require a deeper hole.
About 20 inches below the top of the hole, gouge a small cavity in one
wall of the hole. The cavity should be about 4 inches deep and just large
enough in diameter to insert one end of the conduit. Make certain the
cavity “points” in the direction from which power and communications
cables will come. For example the cavity will “point” towards a valve box
if one is being used.
6.
Center the form over the hole. Adjacent to the form, drive four stakes into
the soil. Secure the leveled form to the stakes with the 8p nails.
7.
Cap the ends of the conduit with duct tape. Position the conduit and wire
into place by securing the wire to nails in the form.
8.
Fill the hole and form with approximately 1/2 yard of concrete. Screed the
concrete level with the top of the form. Center the template assembly over
the conduit and press into the concrete. Put 2 x 4 spacers between the
template and the top of the form. The bottom of the bolt threads should be
about 1/2 inch above the concrete. The template must be level in two
dimensions. Use a trowel and edger to finish.
9.
Wait 24 hours before removing the concrete form. Wait 7 days before
mounting the ET Tower.
11
ET107 Weather Station
FIGURE 2-2. ET tower base installation
Anchor
Bolt
Conduit
FIGURE 2-3. Cut-away view shows anchor bolt and conduit placement
in cement pad
12
ET107 Weather Station
2.1.3 AC Power Installation
a)
The currently-available AC power option includes a 100 to 240 Vac to
24 Vdc power supply (see note below). The power supply should be
mounted inside a user-supplied junction box according to local electrical
codes. Dangerous electrical accidents may be avoided by locating the
transformer remotely and burying a low voltage line to the station. The
low voltage will carry up to 500 feet on an 18 AWG power cable.
b) Shut off 110 Vac power at the main breaker. Connect the primary leads of
the power supply to the 100 to 240 Vac power source. Connect a twoconductor cable to the secondary terminals of the power supply. Route the
cable from the power supply to the ET Enclosure according to local
electrical codes.
c)
Splice the incoming two-conductor cable to the power cable provided with
the station. Use the direct burial splice kit when splices are in a valve box
or buried.
d) Connect the power plug to the connector marked “Power” on the back of
the enclosure. See FIGURE 2-24.
2.2
NOTE
The AC power supply option for older ET107 stations included a
120 Vac to 16 Vac step-down transformer instead of the 100 to
240 Vac to 24 Vdc power supply. Appendix E, Step-down
Transformer Installation, provides information for installing an
AC power system that includes the step-down transformer.
CAUTION
The splice and wire nut must be completely immersed into
the silicon gel inside the splice tube to be waterproof.
Tower/Pole
2.2.1 Supplied Components
(1) Upper Tower Section (Tapered)
(1) Lower Tower Section
(6) 5/8 inch Washers
(1) 12 ft 10 AWG Ground Cable
(1) White Tower Cap
(1) 20 ft communications cable (phone or short haul modem)
(1) 20 ft power cable (for AC option only)
2.2.2 Installation
Attach the tower to the base as shown in FIGURE 2-4.
1.
Dig a hole close to the concrete base to access the lower conduit opening.
From the hole, trench to the power and communications sources. Remove
the duct tape from both ends of the conduit.
2.
Remove the template. Slide the bottom and top half of the pole pieces
together. This is a permanent connection and cannot be taken apart once
they are put together. If a little more force is necessary to put the two
halves together, then get a small block of scrap wood and a hammer. Set
13
ET107 Weather Station
the pole upright on a grassy area or have someone hold the pole
horizontally. Place a piece of scrap wood over the very end of the top
section of the pole and gently hammer on the scrap wood to fit the two
halves together. A 1.27 cm (1/2 in) gap between the top and bottom pole
sections is acceptable. Lay the assembled pole on the ground next to the
concrete foundation.
NOTE
3.
Cut and save a 9 inch piece of 12 AWG ground wire from the 12 foot
length provided. This will be used later to attach the enclosure ground to
the lightning rod assembly (reference FIGURE 2-6).
4.
Thread communication cable, power cable with connector ends of cable
out the top of tower, and grounding wire through the tower and conduit.
Electrical fish tape will help. Leave approximately two feet of the
supplied power and communication cable hanging out of the top of the
pole. Secure all wiring so it doesn’t slip back down through the pole.
Solar panel and RF options will not have power or communication
cables.
5.
Place the white tower cap over the tower end.
6.
Raise the tower on a still day. Place a washer on top of the two nuts on
each foundation bolt. Taking great care not to damage cables between the
tower and conduit, raise the tower and lower it onto the conduit and
mounting bolts. Install a washer and nut on each bolt and hand tighten.
Check plumb of the tower by placing a level on the north and east sides of
the lower tower section. Adjust the topmost of the two lower nuts
(leveling nut) on each bolt as necessary. When plumb is established, lock
the leveling nut in place by tightening the lowest nut against it. Tighten
the three top nuts with the wrench.
ET Tower
4 AWG Wire
Leveling
Nut
Ground Rod
Concrete
Foundation
Anchor Bolt
Swept Elbow Conduit
FIGURE 2-4. Transparent view shows raising and grounding the ET
tower
14
ET107 Weather Station
4 AWG Wire
Ground Rod
FIGURE 2-5. Close up of ground rod and 4 AWG cable
2.2.3 Tower Grounding
2.2.3.1 Supplied Components
(1) 5 ft 4 AWG Ground Cable
(1) Copper Ground Lug, Bolt
(1) Ground Rod, Clamp
2.2.3.2 Grounding Procedure
Ground the tower as shown in FIGURE 2-4 and FIGURE 2-5.
1.
Place the ground rod clamp on the ground rod. Secure it about 3 inches
from the top. Do this before the rod is driven into the ground. Be careful
not to damage the clamp with the hammer
2.
Taking care not to damage power or communications lines, drive the
ground rod close to the foundation using a fence post driver or sledge
hammer. Drive the rod at an angle if an impenetrable hardpan layer exists.
Soften hard clay soils with water if necessary.
3.
Strip 1 inch of insulation from both ends of the 4 AWG ground cable.
Strip 1 inch of insulation from the lower end of the 12 AWG ground wire.
Loosen the lug’s set screw and insert the 4 AWG and 12 AWG wire.
Tighten the set screw (FIGURE 2-5).
4.
Loosen the ground rod clamp. Insert the 4 AWG wire. Tighten the clamp
(FIGURE 2-5).
15
ET107 Weather Station
2.3
Enclosure
The weather station datalogger, power supply, sensor connection panel,
communications devices, and data retrieval peripherals are mounted in the ET
enclosure. Refer to Appendix C.1, Enclosure, for a labeled, exploded view of
the enclosure.
Crossarm
Lightning
Rod
Pyranometer
Tipping Bucket
Rain Gage
Met One 034B
Wind Set
ET Enclosure
Radiation
Shield
Ground
Rod
FIGURE 2-6. ET107 instrumentation mounted on the ET tower
16
ET107 Weather Station
2.3.1 Enclosure Installation
1.
Mount the ET enclosure on the ET Tower as shown in FIGURE 2-7.
a.
Remove the front lid. Remove the connector cover from the back of
the ET enclosure by loosening the Phillips screw at the bottom of the
cover.
b.
Loosen the mounting bracket bolts on the back of the enclosure wide
enough to slide over the pole. Slide the enclosure over the pole.
Position the enclosure so it faces east for northern latitudes or west
for southern latitudes. The top of the enclosure should be 2 to 2.5 cm
(3/4 to 1 in) above the top of the pole (see FIGURE 2-7).
2 – 2.5 cm
Power Cable
(if using AC
transformer)
Ground
Wire
COM Cable
(if using phone or
short-haul modem)
FIGURE 2-7. Enclosure spacing above pole
17
ET107 Weather Station
2.4
Crossarm and Sensor Installation
Refer to Appendix C.2, Crossarm, for a labeled, exploded view of the
crossarm.
2.4.1 Components
(1) ET107 Crossarm with Sensors (see FIGURE 2-6)
(1) Met One 034B or Gill WindSonic Wind Sensor
(1) White Mounting Shaft for 034B or Gill WindSonic
(1) Gill Radiation Shield
2.4.2 Crossarm Installation
Adjust the bolts at the base of the pole to vertically level the top section of the
mounting pole. Install the ET107 Sensor Arm after the ET Enclosure is
mounted on the ET Tower. You may need to temporarily remove the
communications option. Mount the sensor arm as shown in FIGURE 2-8
without the wind sensor attached.
FIGURE 2-8. ET107 sensor arm mounting
1) Remove the front lid and the protective connector cover from the back of
the ET enclosure by loosening the one Phillips screw at the bottom of the
cover.
2) Place the sensor arm on top of the enclosure, lining up the four threaded
holes on the under side of the arm with the four holes in the top of the
enclosure. Attach the arm to the enclosure by inserting and tightening four
Phillips head screws. Adjust the position of the ET Enclosure so that the
crossarm is oriented along a due north to due south axis with the rain gage
and solar radiation sensor (pyranometer) on the south side for northern
latitudes and the reverse for southern latitudes.
18
ET107 Weather Station
2.4.3 RH and Temperature Radiation Shield
1.
Remove the two knurled thumb screws taped underneath the crossarm.
2.
Remove the yellow shipping cap from off the end of the
temperature/relative humidity sensor. See FIGURE 2-9 and FIGURE
2-10.
Adapter
Temperature and
RH Sensor
Yellow Cap
(remove)
Radiation
Shield
FIGURE 2-9. Temperature/relative humidity sensor with yellow
protective cap
19
ET107 Weather Station
Temperature and
RH Sensor
without Cap
FIGURE 2-10. Temperature/relative humidity sensor without yellow
protective cap
3.
Insert the temperature/relative humidity into the gill radiation shield until
it stops.
4.
Attach the gill radiation shield to the underside of the crossarm using the
two knurled thumb screws from step 1.
2.4.4 034B Wind Sensor (Wind Sensor Option –MW)
1.
WARNING
20
Install the 034B Wind Sensor as shown in FIGURE 2-11 after the sensor
arm is securely installed.
Plugging this sensor into the connector marked “SDI
12” can result in damaging this sensor, the main
enclosure connector board, or both.
ET107 Weather Station
Temp/% RH Gill
Radiation Shield
Knurled Thumb
Mounting Screws
FIGURE 2-11. Wind and RH/temperature sensor installation
Wind
Vane
Counter
Weight
Shoulder
Screw
South
Alignment
Sticker
Alignment
Screw
Mounting
Pipe
FIGURE 2-12. 034B mounting to pipe
21
ET107 Weather Station
WARNING
The wind vane can be easily damaged if dropped or
bent. Leave the wind vane in the protective cardboard
sleeve until it’s ready to be installed.
2.
Remove the alignment screw at the base of the 034B-ET (FIGURE 2-12).
Insert the 034B into the 034B Mounting Shaft. Align the hole in the shaft
with that in the 034B base and replace the screw. Do not overtighten the
alignment screw. Do not remove the shoulder screw at this time.
3.
Insert the mounting shaft through the U-Bolt on the sensor arm. Adjust
the mounting shaft so that the cable and connector coming out the end of
the sensor arm can plug easily into the mating connector on the 034B.
Lightly tighten up the U-bolt clamp nuts. See FIGURE 2-11.
4.
See FIGURE 2-12 for the alignment sticker on the 034B. Align the arrow
on this sticker with True South. The counterweight will also be pointing
due south. Make sure the sensor cable is not being pinched by the U-bolt.
Tighten up the U-bolt to hold the sensor firmly. Plug the cable into the
mating connector on the sensor. Plug must be fully seated and locking
ring turned fully clockwise.
5.
Install the wind vane using the Allen wrench supplied with the vane.
Wind vane should be perpendicular to the crossarm. Put the MetOne
sticker over the wind vane Allen screw opening.
6.
Remove and keep the shoulder screw. The shoulder screw will be needed
for replacing bearings and/or potentiometer. The wind vane and cups
should turn freely.
2.4.5 Gill WindSonic 2-D Ultrasonic Wind Sensor (Wind Sensor Option –
GW)
2.4.5.1 Changing the Jumper
NOTE
Jumper is set at the factory if Gill WindSonic is ordered with the
station.
When the WindSonic1-ET is added to the ET107, a jumper setting must be
changed. The procedure to change the jumper follows:
22
1.
Remove the cover of the enclosure.
2.
Disconnect the 10588 ribbon cable from the CS I/O port.
3.
Use a Philips screwdriver to loosen the four screws shown in FIGURE
2-13.
ET107 Weather Station
Loosen Screws
FIGURE 2-13. Screws that secure the electronics cover
4.
Remove the electronics cover to expose the PCB (see FIGURE 2-14).
Lift Here
FIGURE 2-14. Removal of the electronics cover
23
ET107 Weather Station
5.
Move the jumper at the top of connector PC board so that it is placed over
the center and right pins (see FIGURE 2-15).
New Jumper Position
FIGURE 2-15. Jumper set for WindSonic1
6.
Replace electronics cover.
7.
Tighten screws.
8.
Reattach 10588 ribbon cable to the CS I/O port.
9.
Replace enclosure cover.
2.4.5.2 Attachment to Sensor Arm
24
1.
Remove the three Phillips screws from the end of the white mounting
shaft. Remove the protective cap covering the Gill WindSonic sensor
cable plug.
2.
Loosen the U-bolt holding the mounting shaft to the crossarm. Pull the
shaft up and out of the U-bolt as shown in FIGURE 2-16.
ET107 Weather Station
FIGURE 2-16. Gill WindSonic mounting shaft
3.
Slide the connector and cable up through the center of the mounting shaft.
Plug the cable into the Gill WindSonic sensor. The connector has a key
and needs to be pushed in then rotated clockwise to lock it in place. See
FIGURE 2-17.
FIGURE 2-17. Gill WindSonic connected to cable
25
ET107 Weather Station
4.
Center the Gill WindSonic over the three threaded screw holes on the
mounting shaft and screw it in place using the three Phillips screws taken
off the shaft in step 1.
5.
Slide the shaft and sensor back through the U-bolt. Align the sensor with
north by pointing the small colored dot on outer edge of the bottom of the
sensor so it faces true north. Space the sensor about 25.4 cm (10 in) above
the crossarm and tighten down the U-bolt.
2.4.6 Rain Gage
For accurate measurements, the rain gage needs to be installed so it is
horizontally level. A bubble level is situated on the bottom of the inside of the
rain gage. To see the bubble level, pull the gold funnel up and off of the top of
the rain gage. Remove the rubber band holding the tipping mechanism in
place. The rain gage bubble level mounted on the tipping mechanism shows
how vertical the pole was installed. Adjust the bolts at the bottom of the pole
as needed to get the bubble level centered. Put the gold funnel back on the top
of the rain gage after leveling has been completed.
FIGURE 2-18. Remove rubber band from tipping mechanism
26
ET107 Weather Station
2.4.7 Pyranometer
Level the pyranometer as indicated in FIGURE 2-19. Adjust the three leveling
screws until the bubble level indicates plumb. Remove the red or green
shipping cap from the pyranometer. See FIGURE 2-20.
Leveling
Screws
FIGURE 2-19. Pyranometer leveling
Remove Cap
FIGURE 2-20. Remove red or green pyranometer cap
27
ET107 Weather Station
2.4.8 107-LC or 108-LC Soil Temperature Sensor (Optional)
Soil temperature sensors do NOT have an armored outer jacket. The jacket is
waterproof but NOT cut proof. The recommended method is to bury conduit
from the weather station to the soil temperature site and route the sensor cable
through the conduit. Bury the end of the sensor so it is in contact with the soil
surface to be measured. See sensor manual for complete instructions.
This sensor could be plugged into one of three possible connectors on the back
of the ET107 station. Check the programming software for correct station
connection.
NOTE
The cable used with the soil temperature sensor is waterproof but
not armored. Route cable through conduit if rocky soils or rodents
are present.
2.4.9 CS616-LC Water Content Sensor (Optional)
2.4.9.1 Changing the Jumper
NOTE
Jumper is set at the factory if CS616-LC is ordered with the
station.
When the CS616-LC is added to the ET107, a jumper setting must be changed.
The procedure to change the jumper follows:
28
1.
Remove the cover of the enclosure.
2.
Disconnect the 10588 ribbon cable from the CS I/O port.
3.
Use a Philips screwdriver to loosen the four screws shown in FIGURE
2-21.
ET107 Weather Station
Loosen Screws
FIGURE 2-21. Screws that secure the electronics cover
4.
Remove the electronics cover to expose the PCB (see FIGURE 2-22).
Lift Here
FIGURE 2-22. Removal of the electronics cover
29
ET107 Weather Station
5.
Move the jumper so that it is placed over the center and right pins (see
FIGURE 2-23).
New Jumper Position
FIGURE 2-23. Jumper set for CS616
6.
Replace electronics cover.
7.
Tighten screws.
8.
Reattach 10588 ribbon cable to the CS I/O port.
9.
Replace enclosure cover.
2.4.9.2 Site Installation
The CS616-LC water content sensor does NOT have an armored outer jacket.
The jacket is waterproof but NOT cut proof. The recommended method is to
bury conduit from the weather station to the soil water content measurement
site and route the sensor cable through the conduit. Bury the end of the sensor
so its rod ends are in contact with the soil surface to be measured. See manual
for complete instructions.
This sensor plugs into the enclosure connector marked “TEMP CS616”.
NOTE
30
The cable used with the CS616-LC water content reflectometer
sensor is waterproof but not armored. Route cable through
conduit if rocky soils or rodents are present.
ET107 Weather Station
2.4.10 CS650-LC or CS655-LC Soil Water Content Sensor Plus (Optional)
The CS650-LC and CS655-LC are multiparameter smart sensors that use
innovative techniques to monitor soil volumetric water content, bulk electrical
conductivity, and temperature. These sensors do NOT have an armored outer
jacket. The jacket is waterproof but NOT cut proof. The recommended
method is to bury conduit from the weather station to the soil water content
measurement site and route the sensor cable through the conduit. Bury the end
of the sensor so its rod ends are in contact with the soil surface to be measured.
See CS650 and CS655 Water Content Reflectometer manual for complete
instructions.
The CS650-LC or CS655-LC plugs into the enclosure connector marked
“SDI-12”.
NOTE
The cable used with the CS650-LC and CS655-LC is waterproof
but not armored. Route cable through conduit if rocky soils or
rodents are present.
2.4.11 Sensor Connections
Sensor schematics are provided in Section 4.3.1, Sensor Schematics.
1.
WARNING
Each sensor cable plug attaches to a unique bulkhead connector as shown
in FIGURE 2-24. The sensor cables are individually marked to match up
with the sensor labeling on the back of the enclosure.
The 034B Wind Sensor plugs into the connector labeled
WS/WD. Plugging this sensor in the connector labeled
SDI-12 may damage the sensor and/or the main
enclosure connector board.
31
ET107 Weather Station
Enclosure Ground Lug
Wire Tie Harness
Sensors
TEMP CS616
WS/WD
SDI-12
TEMP/SONIC
RAIN (PRECIP)
TEMP/RH
SOLAR RADIATION
COMM
POWER
BNC Coaxial
Connector
Standoff
FIGURE 2-24. Position of sensor bulkhead connectors
32
NOTE
It’s very important that each plug is completely seated on to the
connector and the locking ring turned 1/4 revolution clockwise.
Failure to seat the plug completely could cause corrosion and
water damage to both the enclosure and the sensor cable.
NOTE
Notice how the sensor caps are slid between the connector and the
one above in FIGURE 2-25. This will keep the caps out of the
way of the connector cover.
ET107 Weather Station
FIGURE 2-25. Connecting sensor cabling to enclosure
2.4.12 Sensor Verification and Clock Set
1.
Send the weather station program to the station using your Campbell
Scientific software such as VisualWeather, PC400, or LoggerNet. Verify
all sensors are functioning correctly. Verify the weather station clock and
set as necessary.
NOTE
The ET107 comes with a default program (see Appendix D,
Default Programs).
NOTE
Use standard time in the station if calculating evapotranspiration
(ETsz). Do not use daylight savings time.
33
ET107 Weather Station
2.
Additional Station Communication Options:
a)
The station can be accessed directly using a CR1000KD keypad
display at the weather station. Plug the keypad into the extra plug
coming off the 9-pin connector marked “CS I/O”.
b) A laptop can be used to connect directly to the RS-232 port at the
station using a standard 9-pin serial cable. Do NOT use a null modem
cable.
c)
2.5
The station can be connected directly to using a Palm with CSI
PConnect software and connector/cable or PConnect CE if using a
Windows CE based handheld with connector/cable.
Communication Peripherals
Only one communication kit can be mounted inside the ET enclosure.
Communication kits ordered with the ET Enclosure are pre-mounted and prewired; no further connections inside the enclosure are necessary. Follow the
“External Installation” procedures in later sections to make the external
connections.
If you received a telecommunication kit separate from the ET Enclosure,
follow the “Internal Installation” procedures outlined in later sections.
Schematics for the phone and short haul modems are in Section 4.3.3,
Communication Modems Schematics.
Default settings for the CR1000 in the ET107 station.
•
•
•
•
PakBus address 1
RS-232 Port: Autobaud (300 – 115,200 Baud)
ME: Autobaud
SDC7 or SDC8: 115,200 Baud
2.5.1 Direct Connect to ET107 Station
The ET107 station does not require an interface device for direct RS-232
communication. The inside of the enclosure has a RS-232 and CS I/O port
available for communication (see FIGURE 2-26). Most standard
communication options use the CS I/O port leaving the RS-232 port free for
direct communication with a laptop or desktop computer using a standard RS232 serial cable. The CR1000 datalogger used in the ET107 station can speak
with more than one device at a time allowing troubleshooting to be done in the
field with a laptop while remote communication devices are accessing the
station.
NOTE
34
It’s best to use Device Configuration Utility (DevConfig) and
connect directly to the station to change the CR1000
configuration. DevConfig is included with LoggerNet and can be
obtained, at no charge, from our website.
ET107 Weather Station
Connects with a
phone modem, Rad
modem, or RF450
radio via the 10588
ribbon cable
Connects with
phone modem’s
RJ-11 patch cord
Connects with the
Rad modem’s 4-wire
patch cable
Connects with a
laptop via an RS-232
serial cable or a
cellular modem via
the 18663 Null
Modem Cable
FIGURE 2-26. Close-up of the terminals and 9-pin ports in the ET107
(battery not shown)
2.5.2 Phone Modem
Phone modems enable communications between the ET Enclosure and a Hayes
compatible modem at your PC over a dedicated phone line. Phone line surge
protection is built into the ET Enclosure. By default, the COM220 phone
modem is configured for SDC7.
35
ET107 Weather Station
RJ-11 Patch Cord Connects with RJ-11 Jack
Ground Wire
10588 Ribbon Cable
FIGURE 2-27. Phone modem mounting and connections (battery not
shown)
2.5.2.1 Internal Installation
NOTE
If the phone modem was ordered with the ET107, you can skip
this section and go directly to Section 2.5.2.2, External
Installation.
For installation inside the ET Enclosure, the following components are
provided in the phone modem kit:
(1) COM220 Phone Modem
(1) 12 inch RJ-11 Patch Cord
(1) Mounting Bracket
(4) Screws
(1) 12 inch 14 AWG Ground Wire
Install the phone modem as shown in FIGURE 2-27.
36
1.
Attach the modem to the modem bracket with the 2 screws provided.
Mount the modem and bracket into the ET Enclosure with the 3 prethreaded screws on the mounting plate.
2.
Connect the modem 9-pin port to the ET Enclosure CS I/O port with the
pn 10588 ribbon cable supplied with the ET Enclosure (see FIGURE 2-26
and FIGURE 2-27).
3.
Connect the modem RJ-11 jack to the ET Enclosure RJ-11 jack with the
RJ-11 patch cord (see FIGURE 2-27).
4.
Connect the modem ground terminal block (GND) to the ET Enclosure
ground with the 14 AWG ground wire.
ET107 Weather Station
2.5.2.2 External Installation
The following modem kit components are used to make the external
connections:
(1) Direct Burial Splice Kit
(1) 20 ft Telephone Patch Cord with Connector
1) Connect the 20 foot patch cord to connector marked COM on the external
back panel, under the protective cover.
NOTE
It’s very important that each plug is completely seated on to the
connector and the locking ring turned 1/4 revolution clockwise.
Failure to seat the plug completely could cause corrosion and
water damage to both the enclosure and the sensor cable.
2) Splice the labeled “Tip” and “Ring” lines of the patch cord to the
telephone service line. Use the direct burial splice kit when splices are in a
valve box or buried.
NOTE
The splice and wire nut must be completely immersed into the
silicon gel inside the splice tube to be waterproof.
2.5.3 Short-Haul Modem
Short-haul modems enable communication between a datalogger and computer
over two twisted pairs of wires. The maximum distance between modems is
determined by baud rate and wire gauge. At 9600 baud, the approximate
maximum cable length is 6.0 miles using 19 AWG cable. DCE / DTE switches
on the modems are set to DCE.
NOTE
It's critical to use at least a two twisted-pair cable with a shield
wire. Shield wire(s) and/or any additional unused conductors must
connect to an earth ground at one end or the other of the cable run.
37
ET107 Weather Station
Rad Short
Haul Modem
SC932C
10588 Ribbon Cable
(see Figure 2.5-4 for
wiring)
12” 4-Wire
Patch Cable
(see Figure
2.5-4 for
wiring)
FIGURE 2-28. Short-haul modem mounting and connection
2.5.3.1 Internal Installation
NOTE
If the short haul modem was ordered with the ET107, you can skip
this section and go directly to Section 2.5.3.2, External
Installation.
For installation inside the ET Enclosure, the following components are
provided in the short-haul modem kit:
(1) Part number 10596 (SC932C) 9-pin to RS-232 DCE Interface
(1) Rad Modem
(1) Rad/SC932C Mounting Bracket
(1) 12 inch 4-wire patch cable
38
ET107 Weather Station
Install the short-haul modems as shown in FIGURE 2-28 and FIGURE 2-29.
WARNING
1.
Mount the Rad / SC932C mounting bracket into the ET Enclosure with the
three pre-threaded screws provided.
2.
Connect the Rad Modem and SC932C. Strap them into the mounting
bracket under the Velcro strap.
3.
Connect the SC932C 9-pin port to the internal ET Enclosure CS I/O port
with the pn 10588 Ribbon Cable supplied with the ET Enclosure (see
FIGURE 2-28).
4.
Wire the Rad Modem to the ET Enclosure with the 12-inch patch cable.
Match wire labels to wiring panel labels on both the ET Enclosure and the
Rad Modem (+XMT to +XMT, etc.). A small screwdriver is provided
with the ET Enclosure to access the Rad Modem connections. Use the
screwdriver to press down on the lever arm.
Pressing too hard on the lever arm can cause it to
break!
2.5.3.2 External Installation
The following short-haul kit components (see FIGURE 2-26) are used to make
the external connections:
At the ET Enclosure:
(1) 20 ft 4-Wire Patch Cable
(2) 2 Direct Burial Splice Kits
(1) Length of User Supplied Wire (Supplier: Anixter, pn F-02P22BPN,
Phone 847-677-2600)
At the PC:
(1) Rad Modem
(1) 5 ft 4-wire Patch Cable
(1) 10 ft 14 AWG Ground Wire
(1) Surge Protector and Case
(1) 9-25 Pin RS-232 Serial Cable
1) Connect the 20-foot patch cable to the connector marked COM on the
back side of the ET Enclosure. Splice the patch cable to the user supplied
cable, using the direct burial splice kits.
NOTE
It’s very important that each plug is completely seated on to the
connector and the locking ring turned 1/4 revolution clockwise.
Failure to seat the plug completely could cause corrosion and
water damage to both the enclosure and the sensor cable.
NOTE
The splice and wire nut must be completely immersed into the
silicon gel inside the splice tube to be waterproof.
39
ET107 Weather Station
2) Mount the surge protector box to a flat surface within 5 feet of the PC’s
serial port. Ground the center terminal to an earth (or building) ground
using the 14 AWG wire.
3) Connect the 5-foot patch cable from the surge box to the Rad Modem.
Fasten the cable to the strain relief tab with a cable tie. Connect the Rad to
the PC’s serial port with the 9-to-25 pin serial cable.
4) Route the user-supplied cable from the remote splice to the surge
protector. Connect it and the 5-foot patch cable to the surge protector.
See Figure 2.5-1 for close-up
FIGURE 2-29. Short-haul modem wiring diagram
2.5.4 RF450 900 MHz, 1 Watt Spread Spectrum Radio
The RF450 is a license free 1 watt spread spectrum radio. Communication is
strictly line-of-sight. Communication distance is dependent on antennas,
cabling, and terrain (please note that line-of-sight obstructions and RF
interference will affect transmission distance).
2.5.4.1 Power Considerations
AC power is recommended when using RF450 radios with the station. A 10
watt solar panel can be used but days without sunlight and winter months with
little sunlight should be considered. The ET107 station comes with a 7 amphour battery that is NOT designed to handle deep discharge. Discharging the
battery below 11 Vdc may require battery replacement. Below are some
examples of power calculations. Battery current consumption is based on
40
ET107 Weather Station
discharging the 7 amp-hour battery to 80% capacity (5.6 amp-hours).
Discharging the battery past this value could result in damaging the battery.
Polling the station once every 10 minutes and staying on line with the station
for one minute consumes approximately 1.276 amps over a 24 hour period. If
the station were to lose power it could run for around 4.3 days (105 hours)
before damaging the battery. A station with a 10 watt panel would need at least
3 hours of sunlight every day to keep the battery charged. Recommendation
here would be to decrease the power output of the radios or add a PS24 power
supply and enclosure with a 24 amp-hour battery below the main enclosure.
See Appendix B, PS24 24 Ahr Power Supply and 10 x 12 inch Enclosure, for
mounting options and information on the PS24.
Polling the station once an hour and staying on line with the station for one
minute consumes approximately 0.388 amps over a 24 hour period. If the
station were to lose power it could run for around 14 days (346 hours) before
damaging the battery. A station with a 10 watt panel would need at least 1 hour
of sunlight every day to keep the battery charged.
2.5.4.2 Default Configuration
By default the radios are configured as follows.
Base Radio At Computer
•
•
•
•
•
Multi-Point Master
RS-232 @ 115,200 Baud
Network ID: 1234
Frequency Key: 5
1 Watt Output (Transmit Power: 10)
Weather Station Radio
•
•
•
•
•
•
Multi-Point Slave
Communication With Datalogger via CS I/O SDC7
Network ID: 1234
Frequency Key: 5
1 Watt Output (Transmit Power: 10)
Low Power Mode: 2
See the RF450 manual for changing radio settings.
2.5.4.3 Internal Installation
NOTE
If the RF450 radio was ordered with the ET107, you can skip this
section and go directly to Section 2.5.4.4, External Installation.
The following components are provided in the RF450 radio kit for installation
inside the ET enclosure:
(1) 18327 RF450 900MHz 1 W Spread Spectrum Radio
(1) 20584 RF450 ET Enclosure Antenna Cable
(1) 20585 RF450 ET Enclosure Mounting Bracket
The radio comes mounted to the ET bracket. Install the assembly as follows.
41
ET107 Weather Station
NOTE
Power the station down by flipping the PS100 power switch to
“Off” before installing any communication option. Remember to
flip the switch back to “On” after enclosure installation is
completed.
1.
Mount the RF450 bracket and radio into the ET enclosure using the three
existing screws. See FIGURE 2-30.
2.
Thread the smaller SMA connector end of the enclosure antenna cable
underneath the battery cables and screw it to the RF antenna connector on
the RF450 radio. Attach the other end of the cable to the BNC RF
bulkhead connector in the lower right hand corner of the enclosure. Make
sure all connections are tight. See FIGURE 2-30.
10588 Ribbon Cable
Antenna Cable
FIGURE 2-30. RF450 in ET107 (battery not shown)
3.
Connect the long 9-pin female end of the 10588 ribbon cable to the CS I/O
port on the RF450 radio. Screw the connector to the radio using the
provided two screws. See FIGURE 2-31.
10588
Ribbon
Cable
FIGURE 2-31. Attach ribbon cable to RF450 CS I/O port
42
ET107 Weather Station
2.5.4.4 External Installation
The 14221 3 dBd Omnidirectional or the 14205 6 dBd Yagi Directional
Antenna should have been ordered with the RF450 kit.
The following components are provided with the RF450 radio kit for antenna
installation on the ET pole:
(1) 14241 Antenna Cable – 59 inch
(1) 18290 ET Antenna Adjustable Angle Mounting Bracket
(1) 17492 5/16-18 X 2.125 Stainless Steel U-bolt
(1) 17851 CM230 Saddle Bracket
(4) Silicon Bronze 5/16-18 Nuts
(4) 4365 5/16 Stainless Steel Washers
(4) 4366 5/16 Stainless Steel Lock Washers
(4) 17592 14.5 inch Black UV Resistant Wire Ties
1.
Remove the sensor cable cover off of the back of the enclosure by
loosening the thumb screw at the bottom of the cover and swinging the
cover back and down. The top of the cover has a tab that fits in to the
rectangular hole on the back of the sensor cross arm.
2.
Remove the cap off of the BNC bulkhead connector located on the lower
left hand corner of the enclosure back. Attach the antenna cable to the
BNC connector. Gently bring the cable up alongside the pole and loosely
wire tie it to the wire tie block at the top of the enclosure. Drape the
antenna cable between the pole and the enclosure. See FIGURE 2-32 and
FIGURE 2-33.
FIGURE 2-32. Loosely wire tie antenna cable
43
ET107 Weather Station
FIGURE 2-33. Loosely drape antenna cable over back of enclosure
3.
Use the 2.125 stainless steel U-bolt to attach the adjustable angle mounting
bracket to the pole. Depending on the size of the antenna position the
bracket directly below, or above, the enclosure top mounting bracket. The
top of an omnidirectional antenna should not be higher than the top of the
lightning rod.
Slide the U-bolt behind the pole and through the oval notches on the
adjustable angle mounting bracket (see FIGURE 2-34). Put a flat washer,
lock washer, and a silicon bronze nut, in that order, on the ends of the
U-bolt. Tighten the nuts finger tight to allow the angle bracket to rotate
around the pole.
44
ET107 Weather Station
FIGURE 2-34. Slide antenna bracket U-bolt around back of the pole
45
ET107 Weather Station
FIGURE 2-35. Antenna bracket mounted to pole
4.
Mount the saddle bracket to the adjustable angle mount bracket by
inserting the ends of the bracket through the quarter circle notches. Put a
flat washer, lock washer, and a silicon bronze nut, in that order, on the
ends of the saddle bracket. Do NOT tighten down the nuts at this time.
FIGURE 2-36. Mount antenna saddle bracket
46
ET107 Weather Station
NOTE
Only rotate enclosure if needed to allow aiming of the Yagi
antenna to the base antenna. Keep solar radiation sensor towards
the South as much as possible. Rotate wind sensor to realign as
needed.
5.
NOTE
Use the following procedure to install the 14205 Yagi antenna for the
RF450. Installation of the 14221 Omni antenna is similar. See FIGURE
2-39.
Mounting hardware that comes in the box with the Yagi antenna
will not be used.
i.
Slide the back of the Yagi antenna into the saddle bracket. If the
Yagi antenna at the station is communicating with an
omnidirectional antenna at the base then align the tines on the
Yagi antenna so they are vertical. See FIGURE 2-37.
If two Yagi antennas are used at both ends of communication
then align the tines the same. If interference is a concern then
align the tines on the two Yagi antennas horizontally instead of
vertically. This will put the signal out of phase with other
antennas that are aligned vertically.
Tighten the nuts on saddle bracket to hold the antenna firmly in
place.
CAUTION
Do NOT over tighten the nuts on the saddle bracket or
damage to the antenna may occur.
FIGURE 2-37. Yagi antenna mounted to saddle bracket
ii. Orient the Yagi antenna so it’s aimed at the base antenna. You
may have to flip the adjustable angle bracket over to get the
47
ET107 Weather Station
antenna and saddle bracket to point correctly in the vertical
direction.
iii. Adjust the antenna cable at the BNC connector so the cable cover
fits over all the sensor cables as well as the antenna cable. You
may have to gently bend the antenna cable to put a 90° bend by
the BNC connector end of the cable. Take the cover off when
you’re done.
iv. Use one of the black wire ties to strap the antenna cable to the
bundle of sensor cables.
v.
Tighten up the wire ties holding the antenna cable to the wire tie
mount at the top of the enclosure.
vi. Take one black wire tie and strap the antenna cable to the antenna
as shown in FIGURE 2-38. Leave a little slack on the cable
between the wire tie and the antenna connector so as not to stress
the connector/cable connection.
vii. Make sure there is a loop of antenna cable directly under the Yagi
antenna. This will act as a drip loop and allow moisture to run off
the antenna and cable. See FIGURE 2-38.
viii. Wire tie the antenna cable to the pole. Clean up the wire ties and
put the cable cover back on.
Wire Ties
FIGURE 2-38. Wire tie antenna cable to Yagi antenna and to pole
48
ET107 Weather Station
Wire Tie
Wire Tie
FIGURE 2-39. Wire tie locations for Omni antenna installation
2.5.4.5 Base Radio Installation
The base radio kit comes with the following items.
(1) 10873 RS-232 Serial Data Cable with 6 ft of cable
(1) 15966 Wall Adapter: 100 to 240 Vac, 50-60 Hz Input to 12 Vdc 80 0mA
Output with 6 ft of cable.
(1) 18327 RF450 900 MHz, 1 W Spread Spectrum Radio
(1) 20617 900 MHz 0 dBd Omnidirectional Window Mount Antenna with 79
in. (6.58 ft) of Cable
The RF450 radio will need to be connected to a RS-232 serial port on the
calling computer and powered by the wall adapter. The antenna is designed to
stick to a window facing the weather station (see FIGURE 2-40 and FIGURE
2-41).
CAUTION
In order to comply with the FCC RF exposure requirements,
the RF450 series may be used only with approved
antennas that have been tested with this radio and a
minimum separation distance of 8 inches (20 cm) must be
maintained from the antenna to any nearby persons.
Attach the SMA connector on the antenna to the RF450 radio. Remove the
strip covering the adhesive on the antenna and stick it vertically to a window.
49
ET107 Weather Station
Attach the serial cable from the calling computer’s serial port to the port
marked “RS-232” on the RF450. Plug the wall adapter into a wall outlet and
plug the barrel connector into the RF450 connector marked “DC POWER 728V”. You should see the lights on the radio come on.
Campbell Scientific Software Settings:
•
•
•
•
•
Multi-point master
Communication to computer via RS-232
Network ID: 1234
Frequency key: 5
1 watt output (transmit power: 10)
FIGURE 2-40. Base RF450 installation
50
ET107 Weather Station
FIGURE 2-41. A base radio installed in an office
2.5.5 19256 ET Cell Phone Accessory Kit
The 19256 ET Cell Phone Accessory Kit includes hardware for installing a
cellular phone to an ET107 weather station. The cellular modem and antenna
are ordered separately.
2.5.5.1 Cellular Modems Available from Campbell Scientific
Campbell Scientific currently offers the RavenXTG and RavenXTV digital
cellular modems. The RavenXTG is a General Packet Radio Service (GPRS)
modem configured for AT&T networks. The RavenXTV is a Code Division
Multiple Access (CDMA) modem configured for Verizon networks. These
cellular modems transmit data to the local cellular tower. A PC retrieves the
data from the cellular tower via the Internet.
NOTE
Before purchasing a digital cellular modem, ensure that there is a
CDMA or GPRS network with coverage at the datalogger site.
For the RavenXTV, you’ll need to contact Verizon and ask them
about coverage. For the RavenXTG, a coverage map is available
at: www.wireless.att.com/coverageviewer.
51
ET107 Weather Station
2.5.5.2 Antenna
Campbell Scientific recommends the 20679 Dual-Band 0/3 dBd
Omnidirectional Antenna for using a RavenXT modem in an ET107 station.
This antenna covers both the 800-MHz band and the 1.9-GHz band. For the
800-MHz band, the 20679 provides a 0-dBd gain. For the 1.9-GHz band, the
20679 provides a 3-dBd gain.
NOTE
Mounting hardware that comes in the box with the 20679 antenna
will not be used. The 19256 kit provides the hardware needed to
mount the antenna to the ET107 pole.
2.5.5.3 Power Considerations
Campbell Scientific recommends using either AC power or a 10-watt solar
panel and the PS24 power supply. Refer to Appendix B, PS24 24 Ahr Power
Supply and 10 x 12 inch Enclosure, for mounting options and information on
the PS24.
2.5.5.4 Establishing Cellular Service and Configuring the Cellular Modem
To use a cellular modem, you must first establish cellular service. The modem
then needs to be activated and programmed for use with Campbell Scientific
equipment. Procedures for doing these tasks are provided in the cellular
modem manual.
NOTE
Campbell Scientific recommends testing the modem in the office
(assuming there is cellular coverage) prior to installing it in the
field.
2.5.5.5 Internal Installation
NOTE
If the 19256 Cell Phone Accessory Kit and cellular modem were
ordered with the ET107, you can skip this section and go directly
to Section 2.5.5.6, External Installation.
For installation inside the ET enclosure, the following components are
provided in the cell phone accessory kit:
(1) Mounting bracket
(1) Null Modem Cable
(1) 5502 4-inch Velcro Hook—used with the Velcro strap to secure the radio
(1) 12-inch Coaxial Cable with SMA-to-BNC Connectors
52
ET107 Weather Station
Power Cable
(provided with the cellular modem)
12-in. Coaxial Cable
Null Modem Cable
FIGURE 2-42. RavenXT cellular modem mounted inside the ET107
(power supply not shown).
NOTE
1.
Fasten the mounting bracket to the ET enclosure using the three prethreaded screws provided.
2.
Thread the smaller SMA connector end of the enclosure antenna cable
underneath the battery cables and screw it to the antenna connector on the
cellular modem. Attach the other end of the cable to the BNC RF
bulkhead connector in the lower right hand corner of the enclosure. Make
sure all connections are tight. See FIGURE 2-42.
3.
Use the null modem cable to connect the cellular modem’s serial port to
the ET107’s RS-232 9-pin port. See FIGURE 2-42.
4.
Attach the power cable to the cellular modem. Insert the power cable’s red
wire into either the ET107’s SW-12 or 12V terminal, and then insert the
terminal. See FIGURE 2-42.
power cable’s black wire into the
Connection to the SW-12 terminal allows the ET107 to switch
power to the modem during scheduled transmission intervals, thus
conserving power. This connection is recommended for solarpowered ET stations. Custom programming required.
2.5.5.6 External Installation
The 20679 800 MHz/0 dBd and 1.9 GHz/3 dBd Omnidirectional Cellular
Antenna or the 10530 800 MHz Cellular 9dBd YAGI Antenna should have
been ordered with the kit.
NOTE
Mounting hardware that comes in the box with the antenna will
not be used.
53
ET107 Weather Station
To mount the antenna onto the ET pole, the 19256 Cell Phone Accessory Kit
contains the following hardware, which is the same hardware used in the 20586
RF450 kit:
(1) 14241 Antenna Cable – 59 inch
(1) 18290 ET Antenna Adjustable Angle Mounting Bracket
(1) 17492 5/16-18 x 2.125 Stainless Steel U-bolt
(1) 17851 CM230 Saddle Bracket
(4) Silicon Bronze 5/16-18 Nuts
(4) 4365 5/16 Stainless Steel Washers
(4) 4366 5/16 Stainless Steel Lock Washers
(6) 17592 14.5 inch Black UV Resistant Wire Ties
CAUTION
54
1.
Fasten the mounting hardware onto the ET107 pole by following steps 1
through 4 in Section 2.5.4.4, External Installation.
2.
Slide the back of the antenna into the saddle bracket and tighten its nuts to
hold the antenna firmly in place.
Do NOT over tighten the nuts on the saddle bracket or you
might damage the antenna.
3.
If using the 10530 Yagi antenna, orient the antenna so it’s aimed at the
cellular tower. You may have to flip the adjustable angle bracket over to
get the antenna and saddle bracket to point correctly in the vertical
direction.
4.
Adjust the antenna cable at the BNC connector so the cable cover fits over
all the sensor cables as well as the antenna cable. You may have to gently
bend the antenna cable to put a 90° bend by the BNC connector end of the
cable. Take the cover off when you’re done.
5.
Use one of the black wire ties to strap the antenna cable to the bundle of
sensor cables.
6.
Tighten up the wire ties holding the antenna cable to the wire tie mount at
the top of the enclosure.
7.
Take one black wire tie and strap the antenna cable to the antenna. Leave
a little slack on the cable between the wire tie and the antenna connector so
as not to stress the connector/cable connection.
8.
Wire tie the antenna cable to the pole. Clean up the wire ties and put the
cable cover back on.
ET107 Weather Station
2.6
Lightning Rod Installation
Install lightning rod as shown in FIGURE 2-43 and FIGURE 2-44.
1.
Carefully mount the lightning rod clamp to the top of the pole (see
FIGURE 2-43). Position the clamp so it won’t interfere with the connector
cover.
FIGURE 2-43. Lightning rod bracket installation
55
ET107 Weather Station
2.
Strip 2.54 cm (1 in) from the top of the main green 10 AWG tower ground
wire. Insert the exposed wire into the empty clamp opening. Do not
tighten the screw at this time (see FIGURE 2-44).
FIGURE 2-44. Grounding to lightning rod clamp
56
3.
Strip 2.54 cm (1 in) from both ends of the 23 cm (9 in) piece of 10 AWG
green ground wire. Insert one end into the enclosure ground lug located at
the top back of the enclosure. Put the other end in the same clamp opening
as the main grounding wire and tighten down the screw (see FIGURE
2-44).
4.
Insert the lightning rod into the empty clamp opening. The milled flat side
of the lightning rod should face the clamping screw. Tighten the screw to
hold the rod firmly in place.
ET107 Weather Station
2.7
Solar Panel Installation
FIGURE 2-45. Solar panel mounting and cabling
a)
Mount the solar panel to the tower using the mounting brackets as shown
in FIGURE 2-45. Mount the solar panel to the tower so it faces south
(northern hemisphere). Position it as high off the ground as practical,
ensuring it cannot interfere with air flow or sunlight around the sensors.
The solar panel should be oriented to receive maximum insolation over the
course of the year. Suggested tilt angles (referenced to the horizontal
plane) are listed below.
57
ET107 Weather Station
Site Latitude
0 to 10 degrees
11 to 20
21 to 45
46 to 65
>65
Tilt Angle (α)
10 degrees
Latitude + 5 degrees
Latitude + 10 degrees
Latitude + 15 degrees
80 degrees
α
FIGURE 2-46. Side view of solar panel shows tilt angle
b) After determining the tilt angle, loosen the two bolts that attach the
mounting bracket to the panel. Adjust the angle, then tighten the bolts.
Secure the lead wire to the mast using wire ties as show in FIGURE 2-46.
Connect the plug at the end of the solar panel cable to the connector
marked “Power”. Make sure the plug is fully seated and the locking ring
turned clockwise until it stops.
NOTE
58
Schematics for the solar panel cable are in Section 4.3.2, Power
Schematics.
ET107 Weather Station
2.8
Battery Installation
Power Switch
FIGURE 2-47. PS100 battery installation
The PS100 power switch should be in the “OFF” position. To install the
battery, remove the cover from the PS100 by sliding the latch up at one end of
the cover and sliding the cover down and out. Install the battery as shown in
FIGURE 2-47. Plug the battery lead into the connector labeled “BATTERY –
Internal 12V 7 Amp-Hour”. Put the cover back on the PS100 and latch it in
place.
NOTE
Do not switch the power supply to “on” until AC or solar power
has been connected to the back of the enclosure.
The red charge light on the PS100 will glow when charging voltage is present.
The charge light is not affected by the switch. Switching on the power supply
without a charging voltage will run the battery down.
FIGURE 2-48 shows factory wiring between the PS100 and the enclosure.
FIGURE 2-48. PS100 to ET107 enclosure wiring
59
ET107 Weather Station
2.9
Restraining Cables and Sealing/Desiccating Enclosure
2.9.1 Restraining Cables
1.
Loosely wire tie power, communication, and grounding cable to the wire
tie harness at the top of the back of the station. Do NOT clip back the wire
tie at this time. See FIGURE 2-49.
Wire Tie Harness
FIGURE 2-49. Cabling strapped to wire tie harness
2.
60
Replace the connector cover. The tab at the top of the connector cover
slides into the opening on the back of the cross arm. Ensure that all cables
and connector caps are under the cover before tightening the Phillips screw
at the bottom of the cover. Make sure that all cables coming out of the top
right of the connector cover are not being pinched.
ET107 Weather Station
FIGURE 2-50. Connector cover in place
6.
Tighten down the wire ties holding cabling to the wire tie harness and clip
off any excess. See FIGURE 2-50.
2.9.2 Sealing and Desiccating the Enclosure
The ET Enclosure is supplied with two desiccant packs. The desiccant
maintains a low humidity in the enclosure to minimize the chance of
condensation on the instrumentation. Desiccant should be changed when the
internal ET Enclosure humidity sensor measures 50% or higher. Install the
desiccant as shown in FIGURE 2-51. Keep unused desiccant tightly sealed in
an airtight container.
NOTE
Putting desiccant into the station should be the very last thing that
is done after all other weather station installation steps have been
completed.
1) Take the desiccant packs out of the plastic bag. Strap the packs into the
desiccant holder inside the lid of the enclosure using the two Velcro straps.
2) Be sure to close the enclosure hasp securely. A padlock may be used on
the latch for extra security.
61
ET107 Weather Station
Desiccant
FIGURE 2-51. Desiccant installation
3.
ET Software
NOTE
The ET107 comes with a default program, and typically does not
require additional programming (see Appendix D, Default
Programs).
A variety of different software packages are available to work with the ET107
station. This section introduces software packages that can be used with the
ET107 station. It is not the goal to fully explain capabilities of each package.
All software packages mentioned below come with extensive help files.
Contact Campbell Scientific with questions and support. All software includes
installation instructions.
Free software packages include Short Cut for Windows (SCWIN) for
programming the station and PC200W which is used to communicate with a
direct connect or short-haul modem station and collect data. PC200W software
cannot be used to communicate with stations on a phone modem. Both
packages can be downloaded from Campbell Scientific’s website
www.campbellsci.com.
62
ET107 Weather Station
VisualWeather version 3.0 or higher is designed to work with the ET107
station and can be used to create programs, monitor present conditions, collect
data, and create reports and graphs. VisualWeather is designed to be a very
user friendly program. No datalogger experience is needed to use it.
VisualWeather will communicate with a direct connect, short-haul modem, RF
radio, or phone modem station. Call Campbell Scientific for pricing.
LoggerNet is a very powerful versatile package that requires some experience
with datalogger programming. LoggerNet is used to create custom
programming for the station as well as handling large networks of stations.
LoggerNet is not as easy to use as VisualWeather. Call Campbell Scientific for
pricing.
4.
Maintenance, Troubleshooting, and Schematics
4.1
Maintenance
Proper maintenance of the ET107’s components is essential to obtain accurate
data. Equipment must be in good operating condition, which requires a
program of regular inspection and maintenance. Routine and simple
maintenance can be accomplished by the person in charge of the weather
station. More difficult maintenance such as sensor calibration, sensor
performance testing (i.e., bearing torque), and sensor component replacement,
generally requires a skilled technician, or that the instrument be sent to
Campbell Scientific or the manufacturer.
A station log should be maintained for each weather station that includes serial
numbers, dates that the site was visited, and maintenance that was performed.
4.1.1 Pole
Periodically check the tower for structural damage, proper alignment, and for
level/plumb.
4.1.2 Power Supply
4.1.2.1 Batteries
Rechargeable power supplies should be connected to an AC transformer or
unregulated solar panel at all times. The PS100 charge indicating light should
be “ON” when voltage to the charging circuitry is present. The charge
indicating light runs independent of the power switch. Be aware of battery
voltage that consistently decreases over time, which indicates a failure in the
charging circuitry. Short Cut and VisualWeather automatically program the
weather station to measure battery voltage.
4.1.2.2 Solar Panel
An occasional cleaning of the glass on the solar panel will improve its
efficiency. Use warm mildly soapy water and a clean cloth. Rinse with clean
water.
4.1.3 Desiccant
Humidity is monitored inside the ET107’s enclosure using the Elan HM2000
(pn 10070) RH sensor that is incorporated in the enclosure. Change the
63
ET107 Weather Station
desiccant packs when the enclosure RH exceeds 50%. The enclosure RH
sensor should be changed every 5+ years.
Desiccant packs may be ordered in quantity of 20 individually sealed packs at a
time (pn 6714) or by the individual pack (pn 4905). Campbell Scientific does
have a $50.00 minimum charge. Any orders under $50.00 require a $15.00
handling fee. Call Campbell Scientific for pricing.
4.1.4 Sensor Maintenance
Sensor maintenance should be performed at regular intervals, depending on the
desired accuracy and the conditions of use. A suggested maintenance schedule is
outlined below. See Appendix A, Maintenance Log, for an example of a
maintenance log file. Log file is for one year of station use.
1 week
•
Check the rain gage screen and funnel for debris and level.
1 month
•
CAUTION
CAUTION
Check the solar radiation sensor (pyranometer) for level and
contamination. Gently clean with blast of dry air, soft camel hair brush, or
clean water if needed.
Handle the pyranometer carefully when cleaning. Be careful
not to scratch the surface of the sensor.
•
Do a visual/audio inspection of the 034B-ET’s anemometer at low wind
speeds. Worn bearings can cause the wind cups to spin in an uneven
manner and/or make a grinding sound.
•
Check the WindSonic1-ET for contamination. If needed, gently clean the
WindSonic1 with a cloth and mild detergent.
When cleaning the WindSonic1, do not use solvents and
avoid scratching the sensor.
3 months
64
•
Clean the Gill Radiation Shield by removing the two knurled thumb
screws holding it to the sensor arm. Gently pull the sensor out of the
shield. Clean the gill shield using warm mildly soapy water. Rinse with
clean water and allow the shield to dry before putting it back on the sensor
arm.
•
If necessary clean the white filter element on the end of the temp/RH
sensor. To clean the filter, unscrew it from off the end of the sensor and
put it in a cup of CLEAN DISTILLED WATER. Use no soap. Agitate the
filter in the cup of water. Remove the filter and allow to air dry before
putting it back on the end of the sensor.
ET107 Weather Station
6 months
•
Replace 034B-ET’s anemometer bearings and reed switch if operating
under harsh conditions, such as constant high winds, blowing dust, and/or
salt spray contamination.
1 year
NOTE
•
Replace 034B-ET wind speed (anemometer) bearings (pn 3648). To send
the sensor to Campbell Scientific for bearing replacement call for Return
Material Authorization number or contact Campbell Scientific for bearing
cost to replace bearings in the field.
•
Replace 034B-ET wind speed (anemometer) reed switch (pn 13764) if
needed. To send the sensor to Campbell Scientific for reed switch
replacement call for Return Material Authorization number or contact
Campbell Scientific for reed switch cost to replace reed switch in the field.
•
Check calibration of the HMP60-ETS Temp/RH probe. Sensor will tend to
drift up over time giving readings higher than 100%. Replace RH chip
(pn 9598) if necessary (see FIGURE 4-1 and Section 4.1.4.1, Procedure
for Removing RH Chip).
ET107 stations began shipping January 2014 with an updated gill
radiation shield with knurled thumb screws, using the HMP60ETS Temp/RH sensor. All information in this document is also
pertinent for the HMP50-ET, HMP60-ET, and HMP60-ETR
sensors.
•
Replace desiccant in enclosure housing as needed.
Protective Cap
and Filter
9598 RH Chip
Shipping Cap
(remove prior
to installation)
FIGURE 4-1. Exploded view of the temperature and RH sensor
(adapter not shown)
65
ET107 Weather Station
2 years
•
Replace 034B-ET’s vane potentiometer if needed (call for part number and
price). To send the sensor to Campbell Scientific for potentiometer
replacement call for Return Material Authorization number or contact
Campbell Scientific for potentiometer cost to replace potentiometer in the
field.
•
Replace enclosure gasket if necessary. Enclosure can be sent in to
Campbell Scientific for gasket replacement – call for Return Material
Authorization number or contact Campbell Scientific for gasket cost to
replace gasket in the field.
3 years
•
Send the solar radiation sensor (pyranometer) to Campbell Scientific for
calibration. Call Campbell Scientific for a Return Material Authorization
number. Sensor cannot be calibrated in the field. (Some users recommend
calibrating this sensor on a yearly basis.)
4-5 years
•
Check sensor cables (as well as all other cables) for cracking,
deterioration, proper routing, and strain relief. Replace as required.
•
Check enclosure relative humidity sensor (pn 10070). To check this
sensor, take the lid off the enclosure during routine desiccant replacement
and leave it off for 5 to 10 minutes before putting in new desiccant. While
the lid is off the enclosure, compare the internal enclosure humidity to the
air humidity. Replace if > 10% off.
4.1.4.1 Procedure for Removing RH Chip
1. Unscrew the protective cap (see FIGURE 4-1).
2. Hold the plastic sides of the RH chip and unplug it.
CAUTION
To prevent scratching, avoid touching the silver chip, and
handle the RH chip with care.
3. Rinse off the RH chip with distilled water or dispose of the old RH chip.
4. Hold the sides of the rinsed or new chip and plug it in.
5. Screw on the protective cap.
4.1.5 CR1000M Module
The CR1000M Module contains a lithium battery that operates the clock and
SRAM when the module is not powered. The CR1000M does not draw power
from the lithium battery while it is powered by a 12 Vdc supply. In an ET107
stored at room temperature, the lithium battery should last approximately 10
years (less at temperature extremes). Where the ET107 is powered most or all
of the time, the lithium cell should last much longer.
66
ET107 Weather Station
While powered from an external source, the module measures the voltage of
the lithium battery daily. This voltage is displayed in the status table. A new
battery will have approximately 3.6 volts. The CR1000 Status Table has a
“Lithium Battery” field. This field shows lithium battery voltage.
Send the ET107 enclosure to Campbell Scientific to have Campbell Scientific
replace the battery when voltage is approximately 2.7 V. If the lithium cell is
removed or allowed to discharge below the safe level, the ET107 will still
operate correctly while powered. Without the lithium battery, the clock will
reset and data will be lost when power is removed.
CAUTION
Campbell Scientific recommends factory replacement of the
lithium battery. Misuse of the lithium battery or installing it
improperly can cause severe injury. It is a fire, explosion,
and severe burn hazard! Do not recharge, disassemble,
heat above 100°C (212°F), solder directly to the cell,
incinerate, nor expose contents to water. Lithium batteries
need to be disposed of properly.
The lithium battery contained inside of the ET107’s canister is Campbell
Scientific part number 13519. TABLE 4-1 lists the specifications of the
battery.
TABLE 4-1. CR1000 Lithium Battery Specifications
Manufacturer
Model
Capacity
Self-discharge rate
Operating temperature range
4.2
Tadiran
TL-59025 (3.6 V)
1.2 Ah
1%/year @ 20°C
-55°C to 85°C
Troubleshooting
4.2.1 No Response Using the CR1000KD Keypad
Check keypad response after each of the following steps.
A. Make sure the battery has been installed and the PS100 power switch is set
to “ON” (Section 2.8, Battery Installation).
B. Use a voltmeter to measure the voltage on the 12 V and G terminals (see
FIGURE 2-48); the voltage must be between 9.6 and 16 Vdc.
Use a voltmeter to measure the voltage on the 5V and G terminals (see
FIGURE 2-48); the voltage must be between 4.9 – 5.1 Vdc.
C. Disconnect the Temp/RH sensor from the back of the enclosure.
D. Disconnect the 9-pin ribbon cable from any communication option used
with the station so that only the keypad is attached to the 9-pin plug in the
lower right hand corner of the enclosure.
67
ET107 Weather Station
E. Cycle the power to the datalogger by switching the PS100 power supply to
“OFF”, then to “ON” or disconnecting and reconnecting the battery plug.
Keypad should power up and the Campbell Scientific logo and text
appears on the display.
F. Call Campbell Scientific if still no response.
4.2.2 No Response from Datalogger through SC32B, RAD Modem, or
Phone Modem
At the datalogger:
A. Make sure the battery has been installed and the power switch set to “ON”
(Section 2.8, Battery Installation).
B. Use a voltmeter to measure the voltage on the 12V and G terminals (see
FIGURE 2-48); the voltage must be between 9.6 and 16 Vdc.
Use a voltmeter to measure the voltage on the 5V and G terminals (see
FIGURE 2-48); the voltage must be between 4.9 – 5.1 Vdc.
C. Make sure the datalogger is connected to the communication peripheral,
and the communication peripheral properly installed and configured
(Section 2.5, Communication Peripherals).
At the computer:
D. Make sure calling software is properly configured (PC200W,
VisualWeather, or LoggerNet).
E. Check the cable(s) between the serial port and the modem. If cables have
not been purchased through Campbell Scientific, check for the following
configuration using an ohm meter:
25-pin serial port:
computer end
modem end
2
3
7
20
2
3
7
20
9-pin serial port:
computer end
2
3
4
5
modem end
3
2
20
7
F. Make sure the communication device at the computer is properly
configured and cabled (Section 2.5, Communication Peripherals).
G. Call Campbell Scientific if still no response.
68
ET107 Weather Station
4.2.3 NAN or ±INF Displayed in a Variable
A. Make sure the battery voltage is between 9.6 and 16 Vdc.
B. Verify sensors are plugged into the correct sensor connector and the
locking ring is securely in place (see FIGURE 2-25). Check connectors for
any corrosion on pins.
C. If Short Cut or VisualWeather is used to create the station program double
check the wiring diagram to see if it matches the physical wiring on the
sensor connectors on the back of the enclosure.
If CRBasic is used to create the station program verify channel
assignments and multipliers.
4.2.4 Unreasonable Results Displayed in a Variable
A. Inspect the sensor for damage and/or contamination.
B. Make sure the sensor is plugged into the correct sensor connector on the
back of the enclosure.
C. If Short Cut or VisualWeather is used to create the station program double
check the wiring diagram to see if it matches the physical wiring on the
sensor connectors on the back of the enclosure.
If CRBasic is used to create the station program verify channel
assignments and multipliers. Datalogger program may need to be changed.
4.2.5 NAN or ±INF Stored in a Data Table
A. Something is wrong with the datalogger and/or sensor(s) if Short Cut or
VisualWeather was used to create the station program. Make sure the
sensor is plugged into the correct bulkhead connector.
If CRBasic is used to create the station program verify channel
assignments and multipliers. Datalogger program may need to be changed.
4.2.6 Communication Problems when using an RF450 Radio
LED Status
The RF450 has three red/green LED status indicator lights. TABLE 4-2 shows
the status of each light when the RF450 is in various states of communication.
FIGURE 4-2. RF450 front side view
69
ET107 Weather Station
TABLE 4-2. Multi-Point Network LED Status
Master
Slave
Repeater
Condition
Carrier
Detect
(CD)
Transmit
(TX)
Clear to
Send
(CTS)
Carrier
Detect
(CD)
Transmit
(TX)
Clear to
Send
(CTS)
Carrier
Detect
(CD)
Transmit
(TX)
Clear to
Send
(CTS)
Powered, not
linked
Solid
bright
red
Solid
dim red
Off
Solid
bright
red
Off
Blinking
red
Solid
bright
red
Off
Blinking
red (a)
Repeater and
Slave linked to
Master, no data
Solid
bright
red
Solid
dim red
Off
Solid
green
Off
Solid
bright
red (a)
Solid
green
Solid
dim red
Solid
bright
red (a)
Repeater and
Slave linked to
Master, Master
sending data to
Slave
Solid
bright
red
Solid
dim red
Off
Solid
green
Off
Solid
bright
red (a)
Solid
green
Solid
dim red
Solid
bright
red (a)
Master
Slave
Repeater
Repeater and
Slave linked to
Master, Slave
sending data to
Master
Solid
bright
red
OR
Solid
green
RCV
data
Solid
dim red
Intermittent
flashing
red
Solid
green
Intermittent
flashing
red
Solid
bright
red (a)
Solid
green
Solid
bright
red
Solid
bright
red (a)
Master with
diagnostics
program
running
Solid
bright
red
Solid
dim red
Intermittent
flashing
red
Solid
green
Intermittent
flashing
red
Solid
bright
red (a)
Solid
green
Solid
bright
red
Solid
bright
red (a)
(a) Clear to Send will be solid red with a solid link, as the link weakens the CTS on the Repeater and Slave will begin to
flash.
If DevConfig is unable to establish a connection with the RF450:
70
1.
Check that LoggerNet/PC400 is closed.
2.
Check power to the radio. The Carrier Detect (CD) light should be
flashing red.
3.
Check serial cable connections.
4.
Check serial port assignment for DevConfig.
5.
Press green Setup button on the RF450 and wait several seconds. CD and
Clear to Send (CTS) lights should be solid green.
ET107 Weather Station
Radios not networked together, not communicating:
1.
Check the baud rate of all RF450s; they should be the same.
2.
Check Network IDs of all RF450s; they should be the same.
3.
Check Frequency Key Number of all RF450s; they should be the same
unless two branches of the network are operating in a parallel manner.
4.
Check the “Repeaters Used” box for all RF450s.
5.
Check the PakBus address of dataloggers connected to RF450s and in
LoggerNet.
6.
Check that antenna and antenna cables are SMA (SubMiniature version
A). They will have a yellow heat shrink label to distinguish them from
RPSMA (Reverse Polarity SubMiniature version A) devices. RPSMA
antennas and cables are not compatible with the RF450.
LEDs flash when LoggerNet command transmitted but no response from
datalogger:
1.
Check SC12 cable on the datalogger’s CS I/O port.
2.
Check SDC address in RF450.
3.
Check SDC address in datalogger.
4.
Check the baud rate of all RF450s; they should be the same.
5.
Check the baud rate of LoggerNet; it should match the baud rate of the
RF450s.
Using the diagnostics port.
A special FreeWave Diagnostics cable and software (pn 20625) can be useful
in troubleshooting radio problems. Contact FreeWave Inc. for more
information on using the Diagnostics cable.
4.2.7 Gill WindSonic1-ET Diagnostic Diagnostic Codes
The WindSonic outputs a diagnostic (TABLE 4-3) along with each wind
direction and speed measurement. A datalogger program can be written that
filters out all data when the diagnostic is not 0. The programs can also report
the number of good samples that were used in computing the on-line statistics.
If the total number of good samples is less than 98% of the expected samples,
the WindSonic may be in need of repair.
71
ET107 Weather Station
TABLE 4-3. Gill WindSonic Diagnostic Codes
4.3
Diagnostic
Status
Comment
0
Okay
All okay
1
Axis 1 Failed
Insufficient samples, possible path obstruction
2
Axis 2 Failed
Insufficient samples, possible path obstruction
4
Both Axis Failed
Insufficient samples, possible path obstruction
8
NVM error
Nonvolatile Memory checksum failed
9
ROM error
Read Only Memory checksum failed
10
Maximum Gain
Questionable wind measurements
Schematics of Connectors
Knowledge of schematics is not necessary for routine installation and
maintenance. Each connector has a small molded dot by pin 1. All of the
schematics show the pinned connectors on the cables. Socketed connectors on
the back of the enclosure are the mirror images of what’s shown.
4.3.1 Sensor Schematics
Schematics of ET107 sensors and associated connectors are provided in
FIGURE 4-3 through FIGURE 4-9 for help in troubleshooting.
Temp/RH
FIGURE 4-3. Schematic of HMP60-ETS RH and Temperature Probe
and connector Temp/RH
72
ET107 Weather Station
FIGURE 4-4. Schematic of 034B-ET Wind Speed and Direction Probe
and connector WS/WD
*Jumper P19 must be
jumpered across
pins 2 (center) and
3 (right).
FIGURE 4-5. Schematic of Gill WindSonic1-ET Wind Sensor, soil
temperature sensor (107-LC or 108-LC), and connector
Temp/Sonic
73
ET107 Weather Station
Apogee
Solar Radiation
Sensor
10 to 20 OHMS
FIGURE 4-6. Schematic of CS305-ET Solar Radiation Sensor and
connector Solar Radiation
NOTE
74
The ET106 used a Licor LI200X-ET Solar Radiation Sensor with
OHM readings of 450 to 650.
ET107 Weather Station
Rain
(Precip)
FIGURE 4-7. Schematic of TE525-ET Rain Sensor and connector Rain
(Precip)
75
ET107 Weather Station
Temperature or CS616 Soil Volumetric Water Content
FIGURE 4-8. Schematic of 107-LC or 108-LC Temperature Probe or
CS616-LC Soil Volumetric Water Content Sensor and connector
Temp/CS616
CS650 or CS655 SDI-12 Port
CS650 or CS655 SDI-12 +12V Supply
FIGURE 4-9. Schematic of CS650-LC or CS655-LC
76
ET107 Weather Station
4.3.2 Power Schematics
FIGURE 4-10. Schematic of solar panel and connector Power
4.3.3 Communication Modems Schematics
FIGURE 4-11. Schematic of short haul or phone modem and connector
COMM
77
ET107 Weather Station
78
Appendix A. ET107 Maintenance Log
Station Installation Date: __________________
CLEAN/INSPECT RAIN GAGE SENSOR
(Recommended - Weekly)
Date
OK/Comments
CLEAN/INSPECT RAIN GAGE SENSOR
(Recommended - Weekly)
Date
OK/Comments
A-1
Appendix A. ET107 Maintenance Log
CLEAN/INSPECT
SOLAR RADIATION SENSOR
(Recommended - Monthly)
Date
OK/Comments
REPLACE WIND SPEED BEARINGS AND
REED SWITCH
(Recommended - Yearly)
Date
OK/Comments
REPLACE RH CHIP (pn 9598) IN THE
HMP60-ETS TEMP/% RH SENSOR
(Recommended - Yearly)
Date
OK/Comments
REPLACE DESICCANT BAGS (QTY - 2
OF pn 4905) INSIDE ENCLOSURE
(Recommended - Yearly)
Date
CLEAN/INSPECT TEMP/% RH
SENSOR & GILL RADIATION SHIELD
(Recommended - Quarterly)
Date
A-2
OK/Comments
OK/Comments
CALIBRATE SOLAR RADIATION
SENSOR (CS305-ET)
(Recommended - Every 3 Years)
Date
OK/Comments
Appendix B. PS24 24 Ahr Power Supply
and 10 x 12 inch Enclosure
The PS24 Power Supply is typically used when a solar-powered ET107
transmits data via an RF450 Spread Spectrum Radio or cellular phone.
However, the PS24 can be used for any situation where a larger capacity
battery is desirable.
B.1 PS24 Components
The PS24 consists of a 24 Ahr rechargeable battery, CH100 regulator, and a
10 inch x 12 inch environmental enclosure (see FIGURE B-1 through FIGURE
B-3). The battery should be recharged via ac power or solar power. An SP10
10-W solar panel, SP20 20-W solar panel, or 14014 Wall Charger is typically
used to recharge the battery. The environmental enclosure is mounted to the
ET107’s pole using the pn 18520 hanger kit.
FIGURE B-1. Environmental enclosure with CH100, power cable, and
battery bracket
B-1
Appendix B. PS24 24 Ahr Power Supply and 10 x 12 inch Enclosure
FIGURE B-2. 24 Ahr battery and battery cable
B-2
Appendix B. PS24 24 Ahr Power Supply and 10 x 12 inch Enclosure
FIGURE B-3. Enclosure supply kit
B-3
Appendix B. PS24 24 Ahr Power Supply and 10 x 12 inch Enclosure
B.2 Installation
CAUTION
CAUTION
The PS24 is purposely shipped without the battery mounted
in its bracket. Do not install the battery until instructed to do
so.
1.
Place the top enclosure bracket on the pole at approximately 40 inches
above the bottom of the pole. The bracket should be installed with the
hook side up, and facing north.
2.
Slide the strut clamps into the bracket as shown in FIGURE B-4. Tighten
the clamp so that it doesn’t move.
Do not over tighten the clamp!
FIGURE B-4. Strut clamps in brackets
B-4
Appendix B. PS24 24 Ahr Power Supply and 10 x 12 inch Enclosure
3.
Place the bottom strut clamp and bracket approximately 12 inches below
the top clamp. This clamp is installed with the hook side down. The
bracket might have to be moved a little to accept the enclosure bracketing,
so don’t tighten the bracket yet. FIGURE B-5 shows the top and bottom
brackets correctly positioned on the ET107 pole.
FIGURE B-5. Both strut clamps and brackets on ET107 pole
B-5
Appendix B. PS24 24 Ahr Power Supply and 10 x 12 inch Enclosure
4.
Hook the enclosure on the top bracket as shown in FIGURE B-6.
FIGURE B-6. Top clamp hook side up
B-6
Appendix B. PS24 24 Ahr Power Supply and 10 x 12 inch Enclosure
5.
CAUTION
The bottom enclosure bracket should slide between the top lip of the
bottom strut mount bracket and the notch directly below. Move the
bottom bracket if necessary, then bolt the bottom bracket down (see
FIGURE B-7).
Do NOT over tighten the bottom bracket.
FIGURE B-7. Enclosure mounted on ET107 pole
B-7
Appendix B. PS24 24 Ahr Power Supply and 10 x 12 inch Enclosure
6.
NOTE
The bottom enclosure bracket has a small metal locking mechanism. Push
up on the small Phillips screw underneath the mechanism and slide it to
the left. Once in place, put a small wire tie in the hole to the right of the
locking mechanism (see FIGURE B-8).
To remove the enclosure from the bracketing, cut off the wire tie,
slide the lock to the right, and lift the entire enclosure off the
bracketing.
FIGURE B-8. Enclosure locking mechanism
B-8
Appendix B. PS24 24 Ahr Power Supply and 10 x 12 inch Enclosure
7.
Install the solar panel above the 10 x 12 enclosure, and face the solar panel
south. See FIGURE B-9 for fully mounted solar.
FIGURE B-9. Mounted solar panel
IMPORTANT
8.
Throw a blanket or box over the solar panel to prevent any voltage output.
9.
Route the solar panel cable and power cable coming from the main ET107
enclosure into the conduit at the bottom of the 10 x 12 enclosure.
Leave a loop of all cables under the 10 x 12 enclosure to act as a
drip line. Cut both cables to whatever length you need. It doesn’t
hurt to leave a loop of cable inside the enclosure.
B-9
Appendix B. PS24 24 Ahr Power Supply and 10 x 12 inch Enclosure
10. Wire the solar panel to the CH100 terminal blocks as follows.
Solar Panel to CH100
Red: CHG
Black: CHG
NOTE
Polarity makes no difference. Connect one wire per CHG terminal
block.
11. Remove the blanket or box from the solar panel once it’s wired in place.
12. Wire the power cable coming from the ET107 station as follows.
Power Cable from ET107 to CH100
Red: +12
Black:
NOTE
B-10
The red charging LED indicates that the solar panel is charging
the battery. The battery will be charged regardless of the switch
position. The switch controls the voltage going to the terminal
blocks marked “+12”.
Appendix B. PS24 24 Ahr Power Supply and 10 x 12 inch Enclosure
13. Follow the Installation of Battery procedure provided in FIGURE B-10.
Plug the battery into the connector on the CH100 marked “INT”.
FIGURE B-10. Procedure for installing and connecting battery
14. An extra loop of ground wire was sent with the station. Use it to ground
the enclosure to the grounding rod system. The external ground lug is
mounted on the bottom left hand corner of the 10 x 12 enclosure.
15. Flip the switch to “ON”, and test drive the station.
16. After everything checks out, find the gray duct putty that was included in
the enclosure supply kit. Seal the cable-entry conduit by placing putty on
the inside and outside of it. Push the putty down into the cable entries.
B-11
Appendix B. PS24 24 Ahr Power Supply and 10 x 12 inch Enclosure
CAUTION
The enclosure needs to be sealed up tight so don’t be stingy
with the putty.
17. Put both bags of desiccant inside of the enclosure.
18. Stick the humidity indicator card on a wall inside of the enclosure.
CAUTION
Pink on the humidity indicator card means it’s time to change
the desiccant. Change the desiccant at least every year.
However, it’s often wise to change the desiccant every six
months.
19. Close the enclosure lid.
B-12
Appendix C. Exploded Views
C.1 Enclosure
C-1
Appendix C. Exploded Views
C.2 Crossarm
C-2
Appendix D. Default Programs
D.1 Program for ET107 with Gill WindSonic
StationName(ET107_Gill)
'Datalogger status information
Public BattVolt
Public LogrTmpC
Public Encl_RH
Public WatchDog
Public Overruns
Public LowVolts
Public LiBattV
'Gill Sonic RS232 variables
Public WindSpd_ms
Public WindSpd_mph
Public WindDir
Dim WC_WSmph
Dim WC_AirtempF
Dim in_bytes_str As String * 21
Dim nmbr_bytes_rtrnd
Dim disable_flag As Boolean
Dim checksum_flg As Boolean
Dim one
Units one = samples
Public diag
Units diag = unitless
'CONNECTOR: RAIN (PRECIP)
'TE525-ET
Public Rain_mm
Public Rain(24)
Public Rain24Ttl
Alias Rain(1)=RainHrTtl
'CONNECTOR: TEMP/RH
'HMP60-ET
Public AirTempC
Public AirTempF
Public RelHum
'CONNECTOR: Solar Radiation
Public SlrRad_W
'Miscellaneous variables and calculations
Public DewPntC
Public HeatIndxC
Public WindChilC
Dim n
DataTable(VW_Hourly,true,-1)
DataInterval(0,60,Min,10)
Maximum(1, BattVolt, FP2, 0, False)
Minimum(1, BattVolt, FP2, 0, False)
Maximum(1, Encl_RH, FP2, 0, False)
Minimum(1, Encl_RH, FP2, 0, False)
Maximum(1, LogrTmpC, FP2, 0, False)
Minimum(1, LogrTmpC, FP2, 0, False)
Maximum(1, WindSpd_ms,IEEE4,disable_flag, False)
WindVector (1,WindSpd_ms,WindDir,IEEE4,disable_flag,0,0,1)
FieldNames ("WindSpd_ms_Avg,WindDir_Avg")
Totalize(1, Rain_mm, FP2, 0)
Average(1, AirTempC, FP2, 0)
Maximum(1, AirTempC, FP2, 0, False)
Minimum(1, AirTempC, FP2, 0, False)
Average(1, RelHum, FP2, 0)
Maximum(1, RelHum, FP2, 0, False)
Minimum(1, RelHum, FP2, 0, False)
D-1
Appendix D. Default Programs
Average(1, SlrRad_W, FP2, 0)
Maximum(1, SlrRad_W, FP2, 0, False)
Maximum (1,DewPntC,FP2,False,False)
Minimum (1,DewPntC,FP2,False,False)
Maximum (1,WindChilC,FP2,False,False)
Minimum (1,WindChilC,FP2,False,False)
Maximum (1,HeatIndxC,FP2,False,False)
Minimum (1,HeatIndxC,FP2,False,False)
EndTable
DataTable (STATS,TRUE,168)
DataInterval (0,60,Min,10)
Totalize (1,one,IEEE4,disable_flag)
FieldNames ("n_TOT")
Totalize (1,one,IEEE4,diag<>1)
FieldNames ("diag_1_TOT")
Totalize (1,one,IEEE4,diag<>2)
FieldNames ("diag_2_TOT")
Totalize (1,one,IEEE4,diag<>4)
FieldNames ("diag_4_TOT")
Totalize (1,one,IEEE4,diag<>8)
FieldNames ("diag_8_TOT")
Totalize (1,one,IEEE4,diag<>9)
FieldNames ("diag_9_TOT")
Totalize (1,one,IEEE4,diag<>10)
FieldNames ("diag_10_TOT")
Totalize (1,one,IEEE4,diag<>NaN)
FieldNames ("no_data_TOT")
EndTable
BeginProg
'Set all rain variables to zero.
For n = 1 To 24
Rain(n) = 0
Next n
one = 1
SerialOpen (Com1,38400,3,0,432)
Scan(5,Sec, 3, 0)
BattVolt = Status.Battery(1,1)
LogrTmpC = Status.PanelTemp(1,1)
WatchDog = Status.WatchdogErrors(1,1)
Overruns = Status.SkippedScan(1,1)
LowVolts = Status.Low12VCount(1,1)
LiBattV = Status.LithiumBattery(1,1)
VoltSe(Encl_RH, 1, mV2500, 10, False, 0, _60Hz, 0.1, 0)
If Encl_RH > 100 Then Encl_RH = 100
SerialInRecord (Com1,in_bytes_str,&h02,0,&h0d0a,nmbr_bytes_rtrnd,01)
WindDir = Mid (in_bytes_str,3,3)
WindSpd_ms = Mid (in_bytes_str,7,6)
diag = Mid (in_bytes_str,16,2)
checksum_flg = ( (HexToDec (Mid (in_bytes_str,20,2))) EQV (CheckSum (in_bytes_str,9,18)))
disable_flag = (NOT (checksum_flg) OR (nmbr_bytes_rtrnd=0) OR (diag<>0))
WindSpd_mph = WindSpd_ms * 2.236936
PulseCount(Rain_mm, 1, 2, 2, 0, 0.254, 0)
RainHrTtl = Rain_mm + RainHrTtl
Rain24Ttl = Rain_mm + Rain24Ttl
If TimeIntoInterval(0,60,Min) Then
Rain24Ttl = 0
For n = 24 To 2 Step -1
Rain(n) = Rain(n-1)
Rain24Ttl = Rain24Ttl + Rain(n)
Next n
RainHrTtl = 0
EndIf
PortSet(9, 1)
D-2
Appendix D. Default Programs
Delay(0,200,MSEC)
VoltSe(AirTempC, 1, mV2500, 2, False, 0, _60Hz, 0.1, -40)
VoltSe(RelHum, 1, mV2500, 1, False, 0, _60Hz, 0.1, 0)
If (RelHum >= 100) AND (RelHum < 108) Then RelHum = 100
AirTempF = AirTempC * 1.8 + 32
VoltDiff(SlrRad_W, 1, mV7_5, 3, true, 0, _60Hz, 200, 0)
If (SlrRad_W < 0) Then SlrRad_W = 0
DewPoint (DewPntC,AirTempC,RelHum)
If DewPntC > AirTempC OR DewPntC = NAN Then DewPntC = AirTempC
'Wind chill calculation
'Trap and set any wind speeds higher than 110 to 110.
WC_WSmph = WindSpd_mph
If WC_WSmph > 110 Then WC_WSmph = 110
'Trap and set any airtempF less than -50
WC_AirtempF = AirTempF
If WC_AirtempF < -50 Then WC_AirtempF = -50
WindChilC = 35.74+0.6215*WC_AirtempF-35.75*WindSpd_mph^0.16+0.4275*WC_
AirtempF*WindSpd_mph^0.16
If WindChilC > WC_AirtempF OR WindChilC = NAN Then WindChilC = WC_AirtempF
If WC_AirtempF > 50 OR WindSpd_mph < 3 Then WindChilC = AirTempF
WindChilC = (5/9)*(WindChilC - 32)
'Heat Index calculation
If (AirTempF >= 80) AND (RelHum >= 40) Then
HeatIndxC = -42.379+2.04901523*AirTempF+10.14333127*RelHum-0.22475541*
AirTempF*RelHum-6.83783E-3*AirTempF^2-5.481717E-2*RelHum^2+
1.22874E-3*AirTempF^2*RelHum+8.5282E-4*AirTempF*RelHum^2-1.99E-6*
AirTempF^2*RelHum^2
Else
HeatIndxC = AirTempF
EndIf
If (HeatIndxC < AirTempF) OR (HeatIndxC = NAN) Then HeatIndxC = AirTempF
HeatIndxC = (5/9) * (HeatIndxC - 32)
CallTable VW_Hourly
CallTable STATS
NextScan
EndProg
D.2 Program for ET107 with 034B
StationName(ET107_034B)
'Datalogger status information
Public BattVolt
Public LogrTmpC
Public Encl_RH
Public WatchDog
Public Overruns
Public LowVolts
Public LiBattV
'O34B
Public WindSpd_ms
Public WindSpd_mph
Public WindDir
Dim WC_WSmph
Dim WC_AirtempF
'CONNECTOR: RAIN (PRECIP)
'TE525-ET
Public Rain_mm
Public Rain(24)
Public Rain24Ttl
Alias Rain(1)=RainHrTtl
'CONNECTOR: TEMP/RH
D-3
Appendix D. Default Programs
'HMP60-ET
Public AirTempC
Public AirTempF
Public RelHum
'CONNECTOR: Solar Radiation
Public SlrRad_W
'Miscellaneous variables and calculations
Public DewPntC
Public HeatIndxC
Public WindChilC
Dim n
DataTable(VW_Hourly,true,-1)
DataInterval(0,60,Min,10)
Maximum(1, BattVolt, FP2, 0, False)
Minimum(1, BattVolt, FP2, 0, False)
Maximum(1, Encl_RH, FP2, 0, False)
Minimum(1, Encl_RH, FP2, 0, False)
Maximum(1, LogrTmpC, FP2, 0, False)
Minimum(1, LogrTmpC, FP2, 0, False)
Maximum (1,WindSpd_ms,FP2,False,False)
WindVector (1,WindSpd_ms,WindDir,FP2,False,0,0,1)
FieldNames ("WindSpd_ms_Avg,WindDir_Avg")
Totalize(1, Rain_mm, FP2, 0)
Average(1, AirTempC, FP2, 0)
Maximum(1, AirTempC, FP2, 0, False)
Minimum(1, AirTempC, FP2, 0, False)
Average(1, RelHum, FP2, 0)
Maximum(1, RelHum, FP2, 0, False)
Minimum(1, RelHum, FP2, 0, False)
Average(1, SlrRad_W, FP2, 0)
Maximum(1, SlrRad_W, FP2, 0, False)
Maximum (1,DewPntC,FP2,False,False)
Minimum (1,DewPntC,FP2,False,False)
Maximum (1,WindChilC,FP2,False,False)
Minimum (1,WindChilC,FP2,False,False)
Maximum (1,HeatIndxC,FP2,False,False)
Minimum (1,HeatIndxC,FP2,False,False)
EndTable
BeginProg
'Set all rain variables to zero.
For n = 1 To 24
Rain(n) = 0
Next n
Scan(5,Sec, 3, 0)
BattVolt = Status.Battery(1,1)
LogrTmpC = Status.PanelTemp(1,1)
WatchDog = Status.WatchdogErrors(1,1)
Overruns = Status.SkippedScan(1,1)
LowVolts = Status.Low12VCount(1,1)
LiBattV = Status.LithiumBattery(1,1)
VoltSe(Encl_RH, 1, mV2500, 10, False, 0, _60Hz, 0.1, 0)
If Encl_RH > 100 Then Encl_RH = 100
PulseCount(WindSpd_ms, 1, 1, 2, 1, 0.799, 0.2811)
If (WindSpd_ms < 0.29) Then WindSpd_ms = 0.001
WindSpd_mph = WindSpd_ms / 0.44707
BrHalf(WindDir, 1, mV2500, 3, VX2, 1, 2500,True, 0,_60Hz, 720, 0)
If (WindDir >= 360 OR WindDir < 0) Then WindDir = 0
If WindDir = NAN Then WindDir = -6999
PulseCount(Rain_mm, 1, 2, 2, 0, 0.254, 0)
RainHrTtl = Rain_mm + RainHrTtl
Rain24Ttl = Rain_mm + Rain24Ttl
If TimeIntoInterval(0,60,Min) Then
Rain24Ttl = 0
D-4
Appendix D. Default Programs
For n = 24 To 2 Step -1
Rain(n) = Rain(n-1)
Rain24Ttl = Rain24Ttl + Rain(n)
Next n
RainHrTtl = 0
EndIf
PortSet(9, 1)
Delay(0,200,MSEC)
VoltSe(AirTempC, 1, mV2500, 2, False, 0, _60Hz, 0.1, -40)
VoltSe(RelHum, 1, mV2500, 1, False, 0, _60Hz, 0.1, 0)
If (RelHum >= 100) AND (RelHum < 108) Then RelHum = 100
AirTempF = AirTempC * 1.8 + 32
VoltDiff(SlrRad_W, 1, mV7_5, 3, true, 0, _60Hz, 200, 0)
If (SlrRad_W < 0) Then SlrRad_W = 0
DewPoint (DewPntC,AirTempC,RelHum)
If DewPntC > AirTempC OR DewPntC = NAN Then DewPntC = AirTempC
'Wind chill calculation
'Trap and set any wind speeds higher than 110 to 110.
WC_WSmph = WindSpd_mph
If WC_WSmph > 110 Then WC_WSmph = 110
'Trap and set any airtempF less than -50
WC_AirtempF = AirTempF
If WC_AirtempF < -50 Then WC_AirtempF = -50
WindChilC = 35.74+0.6215*WC_AirtempF-35.75*WindSpd_mph^0.16+0.4275*WC_
AirtempF*WindSpd_mph^0.16
If WindChilC > WC_AirtempF OR WindChilC = NAN Then WindChilC = WC_AirtempF
If WC_AirtempF > 50 OR WindSpd_mph < 3 Then WindChilC = AirTempF
WindChilC = (5/9)*(WindChilC - 32)
'Heat Index calculation
If (AirTempF >= 80) AND (RelHum >= 40) Then
HeatIndxC = -42.379+2.04901523*AirTempF+10.14333127*RelHum-0.22475541*
AirTempF*RelHum-6.83783E-3*AirTempF^2-5.481717E-2*RelHum^2+
1.22874E-3*AirTempF^2*RelHum+8.5282E-4*AirTempF*RelHum^2-1.99E-6*
AirTempF^2*RelHum^2
Else
HeatIndxC = AirTempF
EndIf
If (HeatIndxC < AirTempF) OR (HeatIndxC = NAN) Then HeatIndxC = AirTempF
HeatIndxC = (5/9) * (HeatIndxC - 32)
CallTable VW_Hourly
NextScan
EndProg
D-5
Appendix D. Default Programs
D-6
Appendix E. Step-down Transformer
Installation
This appendix is for users who have a step-down transformer instead of the 100 to 240 Vac
to 24 Vdc power supply.
User-Supplied
Valve Box
Swept Elbow
Conduit
FIGURE E-1. ET tower installation with step-down transformer
NOTE
User supplies valve box at base of station and weatherproof
enclosure for transformer. See FIGURE E-1.
1.
The AC power option at one time included a 120 Vac to 16 Vac step-down
transformer. The transformer should be mounted inside a user-supplied
junction box according to local electrical codes. Dangerous electrical
accidents may be avoided by locating the transformer remotely and
burying a low voltage line to the station. The low voltage will carry up to
500 feet on an 18 AWG power cable.
2.
Shut off 110 Vac power at the main breaker. Connect the primary leads of
the transformer to 110 Vac following instructions provided with the
transformer. Connect a two-conductor cable to the secondary terminals of
the transformer. Route the cable from the transformer to the ET Enclosure
according to local electrical codes.
3.
Splice the incoming two-conductor cable to the power cable provided with
the station. Use the direct burial splice kit when splices are in a valve box
or buried.
E-1
Appendix E. Step-down Transformer Installation
4.
CAUTION
E-2
Connect the power plug to the connector marked “Power” on the back of
the enclosure. See FIGURE 2-24.
The splice and wire nut must be completely immersed into
the silicon gel inside the splice tube to be waterproof.
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