“PRODUCTS MANUFACTURED BY CAMPBELL SCIENTIFIC, INC. are
warranted by Campbell Scientific, Inc. (“Campbell”) to be free from defects in
materials and workmanship under normal use and service for twelve (12)
months from date of shipment unless otherwise specified in the corresponding
Campbell pricelist or product manual. Products not manufactured, but that are
re-sold by Campbell, are warranted only to the limits extended by the original
manufacturer. Batteries, fine-wire thermocouples, desiccant, and other
consumables have no warranty. Campbell’s obligation under this warranty is
limited to repairing or replacing (at Campbell’s option) defective products,
which shall be the sole and exclusive remedy under this warranty. The
customer shall assume all costs of removing, reinstalling, and shipping
defective products to Campbell. Campbell will return such products by surface
carrier prepaid within the continental United States of America. To all other
locations, Campbell will return such products best way CIP (Port of Entry)
INCOTERM® 2010, prepaid. 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 Campbell such as programming to customer specifications,
electrical connections to products manufactured by Campbell, and product
specific training, is part of Campbell’s product warranty. CAMPBELL
EXPRESSLY DISCLAIMS AND EXCLUDES ANY IMPLIED
WARRANTIES OF MERCHANTABILITY OR FITNESS FOR A
PARTICULAR PURPOSE. Campbell is not liable for any special, indirect,
incidental, and/or consequential damages.”
Assistance
Products may not be returned without prior authorization. The following
contact information is for US and international customers residing in countries
served by Campbell Scientific, Inc. directly. Affiliate companies handle
repairs for customers within their territories. Please visit
www.campbellsci.com to determine which Campbell Scientific company serves
your country.
To obtain a Returned Materials Authorization (RMA), contact CAMPBELL
SCIENTIFIC, INC., phone (435) 227-9000. After an applications engineer
determines the nature of the problem, an RMA number will be issued. Please
write this number clearly on the outside of the shipping container. Campbell
Scientific’s shipping address is:
CAMPBELL SCIENTIFIC, INC.
RMA#_____
815 West 1800 North
Logan, Utah 84321-1784
For all returns, the customer must fill out a “Statement of Product Cleanliness
and Decontamination” form and comply with the requirements specified in it.
The form is available from our web site at www.campbellsci.com/repair. A
completed form must be either emailed to repair@campbellsci.com or faxed to
(435) 227-9106. Campbell Scientific is unable to process any returns until we
receive this form. If the form is not received within three days of product
receipt or is incomplete, the product will be returned to the customer at the
customer’s expense. Campbell Scientific reserves the right to refuse service on
products that were exposed to contaminants that may cause health or safety
concerns for our employees.
Table of Contents
PDF viewers: These page numbers refer to the printed version of this document. Use the
PDF reader bookmarks tab for links to specific sections.
RAWS-F Remote Automated Weather
Station for Fire Weather
1. Introduction
The RAWS-F Fire Weather Quick Deployment Station is a lightweight, preconfigured station that can be set up in less than 10 minutes—without tools
(see Section 2, Getting Started). The aluminum environmental enclosure
houses a 12 V rechargeable battery and a CR1000 datalogger mounted to a 6 ft
tripod. The outside of the enclosure has color-coded, keyed connectors
(FIGURE 1-1) for attaching the sensors. Besides the connectors, a wiring
panel is included allowing the measurement of additional sensors. The
RAWS-F typically communicates via our GOES satellite transmitter. It is also
compatible with other communication equipment such as telephones, digital
cellular transceivers, and radios. This station is ideal for prescribed burns or
other temporary installations. The RAWS-F Quick Deployment Weather
Station is shown in FIGURE 1-2.
Specifications are available from our web site at www.campbellsci.com.
NOTE
For “sensors specifications,” click on “Products”, select “Sensors” and go to
the sensor manual for specifications. For “equipment specifications”, enter the
part number in the “Search” box on the website mentioned above and go to the
equipment manual for specifications.
Equipment and sensor specifications are provided on the
ResourceDVD which ships with the RAWS-F.
FIGURE 1-1. Color-coded, keyed connector panel
1
RAWS-F Remote Automated Weather Station for Fire Weather
Set up and test your station before field deployment (Appendix A).
Level the RAWS to ensure the sensors are level. Level the rain gage by
adjusting the rain gage leveling screw. A post level and compass ship with the
station (pn 16670).
RAWS-F Remote Automated Weather Station for Fire Weather
NOTE
NOTE
Keep this manual and the CR1000KD Keyboard Display with
the RAWS.
Review the station siting and orientation section before field deployment. If a
problem is encountered, review the equipment wiring and troubleshooting
sections in this manual.
After siting and leveling the RAWS, open the enclosure and (1) connect the
battery cable and (2) verify the CH100 switch is in the ‘on’ position.
When this equipment is not in use (for example, transport or
storage), disconnect battery cable to the CH100.
3
RAWS-F Remote Automated Weather Station for Fire Weather
The RAWS-F comes pre-programmed, but this program does
NOT include user-specific GOES-ID parameters. Please contact
a Campbell Scientific Applications Engineer for programming
assistance. Campbell Scientific company contact information is
listed on the last page of this manual.
4
RAWS-F Remote Automated Weather Station for Fire Weather
NOTE
Use the CR1000KD Keyboard
Display to see the “Public
Variables” shown in TABLE 2-1.
•Connect the CR1000KD Keyboard Display to
the CS I/O connector (FIGURE 5-5) or SC12
Cable (FIGURE 2-1)
•Press any key for the CR1000KD Power up
Screen
•Press Enter to move down a menu (Press Esc
to move up a menu)
• (Press up/down arrow to select item)
• Select Data, press Enter
• Select Real Time Tables, press Enter
• Select Public, press Enter
• Press up/down arrow to see the Public Variables listed in TABLE 2-1
TABLE 2-1. Public Variables
Number Name Function
Sensor Variables
1 Batt_Volt System power supply voltage
2 AirTempF HC2S3 air temperature in degrees F
Press any key for Power up Screen
Press ^ to turn on/off backlight
Press <> to adjust contrast
3 RH HC2S3 relative humidity in percent
4 TdewF Dewpoint in degrees F, calculated from HC2S3 data
5 SlrW Solar radiation in watts, pyranometer
6 Rain_in Temporary rain, cleared every scan
7 RainTot TE525 cumulative rain fall in inches
8 WS_mph Wind speed in MPH
9 WindDir Wind direction
10 WSDiag Only for WindSonic data, zero otherwise
11 MaxWS MaxWS, reset 2 minutes before transmit
12 MaxWD Direction of wind during max wind speed
13 SlrMJ Solar radiation in MJoules
14 BP_inHg Hourly — barometric pressure, inHg
15 BPelev_ft Elevation, to correct barometric pressure
16 FuelT_F Hourly — fuel temperature in degrees F
17 FuelM Hourly — fuel moisture, % moisture by weight
GOES Variables
18 CountDwn True or False: True indicates GPS fix good and program is collecting data. False
until GPS fix is obtained
5
RAWS-F Remote Automated Weather Station for Fire Weather
19 Clockgood True or False: True after GPS fix and CR1000 clock has been set to match
TX320 clock
20 TimeToXmit Seconds until transmit time. Indicates CR1000 and TX320 are properly setup
and running
21 SWR Standing Wave Ratio (SWR), only after a transmission. Indicates condition of
antenna and cable. SWR should be less than 2.0
22 FwdPower Forward power in dBm, should be about 37
23 RefPower Reflected power in dBm, should be about 25 or less
24 RC_Data Only valid after first transmission. Anything other than zero is a problem
25 Setup_RC Indicates if CR1000 could setup TX320. Zero is success or has not run
3. Station Siting and Orientation
3.1 General Description
Selecting an appropriate site for the RAWS 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.
NOTE
WARNING
See Section 7, References, for siting references.
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.
3.2 Air Temperature and Relative Humidity
A temperature and relative humidity (RH) sensor should be located over an
open level area at least 9 m in diameter (EPA). The surface should be covered
by short grass, or where grass does not grow, the natural earth surface. The
sensor must be housed inside a radiation shield and adequately ventilated.
Situations to avoid include:
• large industrial heat sources
• rooftops
• steep slopes
• sheltered hollow
• high vegetation
• shaded areas
• swamps
• areas where snow drifts occur
• low places holding standing water after rains
6
3.3 Precipitation
A rain gage should be located over an open level area covered by short grass,
or where grass does not grow, the natural earth surface. Level the RAWS
station to ensure the sensors are level. Level the rain gage by adjusting the rain
gage leveling screw. A post level and compass ship with the RAWS (pn
16770).
RAWS-F Remote Automated Weather Station for Fire Weather
NOTE
Take off the funnel and remove the rubber band securing the
tipping bucket mechanism during transport.
3.4 Solar Radiation
A solar radiation sensor should be located to avoid shadows on the sensor at
any time. Orient the RAWS facing the equator, minimizing the chance of
shading from other weather station structures. Reflective surfaces and sources
of artificial radiation should be avoided. Level the RAWS to ensure the solar
radiation sensor is level.
3.5 Wind Speed and Direction
A wind sensor 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.
3.6 Barometric Pressure (optional)
The barometric pressure sensor is mounted to the back plate inside the RAWS
environmental enclosure.
3.7 Fuel Moisture and Fuel Temperature (optional)
The fuel moisture and fuel temperature sensor should be left outside at the field
site continually exposed to the same conditions as the forest fuels. The fuel
moisture and fuel temperature dowel rods absorb and desorb moisture from its
surroundings. Install the probes horizontally on the mounting stake and face
the sensors towards the equator above a representative forest floor duff layer.
Place the sensor away from foot traffic areas.
4. Sensor Maintenance, Calibration, and
Troubleshooting
4.1 Maintenance
Proper maintenance of weather station 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 (for example, bearing torque), and sensor component
replacement, generally requires sending the instrument to Campbell Scientific.
7
RAWS-F Remote Automated Weather Station for Fire Weather
A station log should be maintained for each weather station that includes
equipment model, serial numbers, and maintenance that was performed.
NOTE
Contact Campbell Scientific, phone (435) 227-9000, for an RMA
number before returning sensor or equipment for service.
4.2 Air Temperature and Relative Humidity
4.2.1 General Description
Rotronic’s HydroClip2 Air Temperature and Relative Humidity Sensor (pn
HC2S3-QD) shown in FIGURE 4-1 contains a Platinum Resistance
Thermometer (PRT) and a Rotronic’s IN1 capacitive sensor. The probe has a
voltage output for each sensor.
FIGURE 4-1. Air temperature and relative humidity
8
4.2.2 Wiring
RAWS-F Remote Automated Weather Station for Fire Weather
The HC2S3 attaches to the connector labeled TEMP/RH, which is color coded
orange. This sensor is internally wired from the RAWS connector panel to the
CR1000.
TABLE 4-1. TEMP/RH Connector (color coded orange)
Connector PinDescriptionCR1000 Terminal
A Temperature H 1L
B Sensor Excitation VX1
4.2.3 Maintenance
4.2.4 Calibration
C Sensor Signal L/
D Power Ground G
E RH Signal 1H
F Switched 12 V SW_12V
The temp/RH sensor requires minimal maintenance. Check monthly to make
sure the radiation shield is free from debris. The filter at the end of the sensor
should also be checked for contaminates. When installed in close proximity to
the ocean or other bodies of salt water, a coating of salt may build up on the
radiation shield, sensor, filter and even the RH chip. A buildup of salt on the
filter or RH chip will delay or destroy the response to atmospheric humidity.
The filter can be rinsed gently in distilled water. If necessary, the chip can be
removed and rinsed as well. Do not scratch the RH chip while cleaning.
Recalibrate the temp/RH sensor annually. Obtain an RMA number before
returning this sensor to Campbell Scientific for recalibration.
4.2.5 Troubleshooting
4.3 Rain Gage
4.3.1 General Description
If a problem is suspected, check the sensor cable. Disconnect the connector
and look for damaged pins. Verify that the sensor body is connected to the
sensor head. Under the filter assembly, verify the sensors are connected but
not touching. Try connecting a substitute sensor. Obtain an RMA number
before returning this sensor to Campbell Scientific for repair.
The Texas Electronics Rain Gage (pn TE525-QD) shown in FIGURE 4-2 is an
adaptation of a Weather Bureau tipping bucket rain gage. The rain gage has a
6 inch collector. The rain gage sensor output has a switch closure for each
bucket tip. Level the rain gage by adjusting the rain gage leveling screw. A
post level and compass (pn 16670) ship with the station.
9
RAWS-F Remote Automated Weather Station for Fire Weather
4.3.2 Wiring
4.3.3 Maintenance
FIGURE 4-2. Rain gage and CS300-QD pyranometer
The TE525-LQ attaches to the connector labeled PRECIP, which is color
coded blue. This sensor is internally wired from the RAWS connector panel to
the CR1000.
TABLE 4-2. PRECIP Connector (color coded blue)
Connector PinDescriptionCR1000 Terminal
A Tipping Bucket C6
B 5 V 5V
C Ground G
The rain gage funnel and bucket mechanism must be kept clean. Routinely
check for and remove any foreign material, dust, insects, etc.
4.3.4 Calibration
Recalibrate the rain gage annually. Obtain an RMA number before returning
this sensor to Campbell Scientific for recalibration.
10
4.3.5 Troubleshooting .3.5 Troubleshooting
If a problem is suspected, check the sensor cable. Disconnect the connector
If a problem is suspected, check the sensor cable. Disconnect the connector
and use a digital volt meter (DVM) to check the resistance between Pin A
and use a digital volt meter (DVM) to check the resistance between Pin A
(sensor signal) and Pin C (sensor ground). The resistance should read as an
(sensor signal) and Pin C (sensor ground). The resistance should read as an
open circuit until you move the rain gage tipping mechanism where the magnet
open circuit until you move the rain gage tipping mechanism where the magnet
swings past the reed relay. Try connecting a substitute sensor. Obtain an
swings past the reed relay. Try connecting a substitute sensor. Obtain an
RMA number before returning this sensor to Campbell Scientific for repair.
RMA number before returning this sensor to Campbell Scientific for repair.
4.4 Solar Radiation 4.4 Solar Radiation
4.4.1 General Description 4.4.1 General Description
The Apogee Pyranometer (pn CS300-QD) shown in FIGURE 4-3 measures
The Apogee Pyranometer (pn CS300-QD) shown in FIGURE 4-3 measures
incoming solar radiation with a silicon photovoltaic detector mounted in a
incoming solar radiation with a silicon photovoltaic detector mounted in a
cosine-corrected head. The detector outputs current; a shunt resistor in the
cosine-corrected head. The detector outputs current; a shunt resistor in the
sensor converts the signal from current to voltage. During the night, the
sensor converts the signal from current to voltage. During the night, the
CS300-QD may read slightly negative incoming solar radiation. The negative
CS300-QD may read slightly negative incoming solar radiation. The negative
signal is caused by RF noise.
signal is caused by RF noise.
RAWS-F Remote Automated Weather Station for Fire Weather
FIGURE 4-3. Pyranometer
11
RAWS-F Remote Automated Weather Station for Fire Weather
4.4.2 Wiring
The CS300-LQ attaches to the connector labeled SOLAR RAD SDI-12; this
connector is color coded green. The pyranometer is internally wired from the
RAWS connector panel to the CR1000.
TABLE 4-3. SOLAR RAD SDI-12 Connector (color coded green)
Connector PinDescriptionCR1000 Terminal
A Solar Sensor + 3H
B Solar Sensor - 3L shorted to
4.4.3 Maintenance
4.4.4 Calibration
C Solar Sensor Ground
D SDI-12 Ground G (used for a second SDI-12
E SDI-12 Signal C5 (used for a second SDI-12
F SDI-12 12 V 12V (used for a second SDI-12
The pyranometer must be kept clean. Routinely check for and remove any
foreign material, dust or debris on the sensor head. The debris can be removed
with a blast of compressed air or with a soft bristle, camel hair brush. Handle
the sensor carefully when cleaning. Be careful not to scratch the surface of the
sensor.
Recalibrate the pyranometer annually. Obtain an RMA number before
returning this sensor to Campbell Scientific for recalibration.
sensor)
sensor)
sensor)
4.4.5 Troubleshooting
If a problem is suspected, check the sensor cable. Disconnect the connector
and use a DVM to check the voltage between Pin A Solar Sensor (+) and Pin B
Solar Sensor (-). The voltage should be 0 to 200 mV for 0 to 1000 W m
radiation. No voltage indicates a problem with either the photodiode or the
shunt resistor, both of which are potted in the sensor head and cannot be
serviced. Try connecting a substitute sensor. Obtain an RMA number before
returning this sensor to Campbell Scientific for repair.
12
-2
RAWS-F Remote Automated Weather Station for Fire Weather
4.5 Wind Speed and Direction .5 Wind Speed and Direction
4.5.1 Wind Sensor 4.5.1 Wind Sensor
4.5.1.1 General Description 4.5.1.1 General Description
The Met One Wind Sensor (pn 034B-QD) shown in FIGURE 4-4 is an
The Met One Wind Sensor (pn 034B-QD) shown in FIGURE 4-4 is an
integrated cup anemometer and wind vane. The anemometer consists of three
integrated cup anemometer and wind vane. The anemometer consists of three
cups that sense the wind speed. These cups rotate on a vertical shaft that
cups that sense the wind speed. These cups rotate on a vertical shaft that
magnetically activates a sealed reed switch. The reed switch opens and closes
magnetically activates a sealed reed switch. The reed switch opens and closes
at a rate proportional to wind speed. The wind direction is sensed by a vane.
at a rate proportional to wind speed. The wind direction is sensed by a vane.
The vane drives a 10 kΩ potentiometer. The wind speed sensor outputs a
The vane drives a 10 kΩ potentiometer. The wind speed sensor outputs a
pulse. The wind direction sensor outputs a voltage.
pulse. The wind direction sensor outputs a voltage.
Set screw holes must be
covered with labels
FIGURE 4-4. Wind sensor
13
RAWS-F Remote Automated Weather Station for Fire Weather
4.5.1.2 Wiring
The 034B-LQ attaches to the connector labeled WS/WD; this connector is
color coded red. The sensor is internally wired from the RAWS connector
panel to the CR1000.
TABLE 4-4. WS/WD Connector (color coded red)
Connector PinDescription CR1000 Terminal
A Sensor Ground
B Wind Direction ExcitationVX2
C Wind Direction Signal 2H
D Power Ground G
E +12 V Power 12V
F Wind Speed Signal P1
4.5.1.3 Maintenance
The wind vane tail must be attached to the hub. Maintain the tail assembly
with the tail vertical. Extra labels are included with the wind sensor to recover
the holes if the sensor has to be disassembled for maintenance. The set screw
holes must be covered with these labels to prevent corrosion and ensure the
warranty. Verify free movement of the cup anemometer and wind vane.
4.5.1.4 Calibration
Recalibrate the wind sensor annually. Obtain an RMA number before
returning this sensor to Campbell Scientific for recalibration.
4.5.1.5 Troubleshooting
If a problem is suspected, check the sensor cable. Disconnect the connector
and look for damaged pins. Verify free movement of the cup anemometer and
wind vane. Try connecting a substitute sensor. Obtain an RMA number before
returning this sensor to Campbell Scientific for repair.
4.5.2 2-D WindSonic (optional)
4.5.2.1 General Description
The Gill Instruments 2-D Sonic Wind Sensor (pn WindSonic4-QD) shown in
FIGURE 4-5 is an ultrasonic anemometer for measuring wind direction and
wind speed. It uses two pairs of orthogonally oriented transducers to sense the
horizontal wind. The transducers bounce the ultrasonic signal from a hood,
minimizing the effects of transducer shadowing and flow distortion. The 2-D
Sonic Wind Sensor makes wind measurements at a frequency of 1 Hz and
outputs a SDI-12 signal to the datalogger.
14
RAWS-F Remote Automated Weather Station for Fire Weather
Blue north
marker arrow
4.5.2.2 Wiring
4.5.2.3 Maintenance
FIGURE 4-5. 2-D WindSonic
The WindSonic4-LQ attaches to the connector labeled SDI-12; this connector
is color coded red. The sensor is internally wired from the RAWS connector
panel to the CR1000.
TABLE 4-5. SDI-12 Connector (color coded yellow)
Connector PinDescriptionCR1000 Terminal
A SDI-12 Signal C7
B 12 V 12V
C Power Ground G
There are no user-serviceable parts on the 2-D Sonic Wind Sensor. Keep the
transducer paths clear of any obstructions. When clearing the transducer paths,
do not remove the “rubber” caps on each of the transducers.
4.5.2.4 Calibration
Recalibrate the 2-D Sonic Wind Sensor annually. Obtain an RMA number
before returning this sensor to Campbell Scientific for recalibration.
15
RAWS-F Remote Automated Weather Station for Fire Weather
4.5.2.5 Troubleshooting
If a problem is suspected, check the sensor cable. Disconnect the connector
and look for damaged pins. Try connecting a substitute sensor. Should the
2-D sonic sensor be damaged, fails to output data, or sends a nonzero
diagnostic, obtain an RMA number before returning this sensor to Campbell
Scientific for repair.
4.6 Barometric Pressure (optional)
4.6.1 General Description
The Setra Barometric Pressure Sensor (pn CS100) shown in FIGURE 4-6 is a
capacitive pressure transducer that uses Setra’s electrical capacitor technology
for barometric pressure measurements over the 600 to 1100 millibar range.
The CS100 is supplied in the triggered mode, in which the datalogger switches
12 Vdc power to the barometer before the measurement. The datalogger then
powers down the barometer after the measurement to conserve power.
4.6.2 Wiring
FIGURE 4-6. Barometric pressure
The CS100 is mounted inside the RAWS environmental enclosure and the
sensor wires are attached to the CR1000 printed circuit board wiring panel.
TABLE 4-6. CS100-QD Wiring
CS100 Wire ColorCR1000 Terminal
Blue 5L
Yellow
Red 12V
Clear G
Black G
Green C4
16
4.6.3 Maintenance
RAWS-F Remote Automated Weather Station for Fire Weather
Since the CS100 is semi-sealed, minimum maintenance is required. Change
the RAWS enclosure desiccant regularly; failure to protect the CS100 sensor
from condensation may result in permanent damage.
CAUTION
The CS100 is sensitive to static when the back plate is
removed. To avoid damage, take adequate anti-static
measures when handling this sensor.
4.6.4 Calibration
Recalibrate the CS100 Barometric Pressure Sensor annually. Obtain an RMA
number before returning this sensor to Campbell Scientific for recalibration.
4.6.5 Troubleshooting
If a problem is suspected, verify the sensor wires are securely fastened to the
CS100 connector and the CR1000 printed circuit board wiring panel. Use a
DVM to check the sensor output voltage on the CR1000 printed circuit board
wiring panel (0 to 2.5 Vdc) between terminals 5H and
NOTE
For the DVM test, “temporarily” move the green wire from “C4”
to “5V” terminal. No voltage indicates a problem with the sensor
or a bad sensor cable connection. Try connecting a substitute
sensor.
Obtain an RMA number before returning this sensor to Campbell Scientific for
repair.
.
4.7 Fuel Moisture and Fuel Temperature (optional)
4.7.1 General Description
The CS516-LQ Fuel Moisture/Fuel Temperature Sensor consists of the CS506
Fuel Moisture Probe, 26601 Fuel Moisture Stick, CS205 Fuel Temperature
Stick, and 107 thermistor mounted on the 26817 Mounting Stake (see FIGURE
4-7). The fuel moisture probe provides the moisture content of a standard 10hour fuel moisture dowel. This moisture represents the moisture content of
small-diameter (10-hour time lag) forest fuels. The fuel temperature probe
consists of a Ponderosa pine dowel with a bored hole and a 107 Temperature
Probe inserted into the dowel. The CS205 mounts on the mounting stake with
the CS506.
17
RAWS-F Remote Automated Weather Station for Fire Weather
FIGURE 4-7. CS516-QD Fuel Moisture/Fuel Temperature
4.7.2 Wiring
4.7.3 Maintenance
The CS516-LQ attaches to the connector labeled FM/FT, which is color coded
brown. This sensor is internally wired from the RAWS connector panel to the
CR1000.
TABLE 4-7. FM/FT Connector (color coded brown)
Connector PinDescriptionCR1000 Terminal
A CS205 Temperature Signal 4L
B Sensor Ground
C CS205 Temperature ExcitationVX1
D CS506 FM Enable C8
E CS506 FM Signal 4H
F CS506 FM 12 V 12V
The CS506 Fuel Moisture element and 26601 dowel should be changed at least
once a year with a new element in the spring. Since the characteristics of wood
change so rapidly, more frequent dowel replacements may be desirable. To
change the sensor element, loosen the Phillips head screws and replace with a
new element. Tighten the screws after replacing the element.
The CS205 Fuel Moisture Stick should be changed annually or more frequently
as required. The wood should visually appear fresh and new, not gray or
discolored. The CS205 inserts into the compression fitting so that compression
is applied to the split end of the stick gripping the 107 temperature probe.
18
RAWS-F Remote Automated Weather Station for Fire Weather
4.7.4 Calibration
For most applications, it is unnecessary to calibrate the CS516-QD Fuel
Moisture and Fuel Temperature Sensor. However, for those users that are
interested in calibrating this sensor, please contact a Campbell Scientific
Applications Engineer.
4.7.5 Troubleshooting
If a problem is suspected, check the sensor cable. Disconnect the connector
and look for damaged pins. Verify the CS506 sensor element is securely
fastened. Try connecting a substitute sensor. Obtain an RMA number before
returning the CS516-QD sensor to Campbell Scientific for repair.
5. Equipment Maintenance, Calibration, and
Troubleshooting
5.1 Solar Panels
5.1.1 General Description
NOTE
5.1.2 Wiring
The solar panel is a photovoltaic power source used for charging lead acid
batteries. The SP20-QD 20 watt solar panel is used for system configurations
that have higher-than-average power requirements. It is also recommended for
use at higher elevations and latitudes. The solar panel should be mounted
facing the equator.
The SP10-QD 10 watt solar panel is recommended for a RAWS where NO
communication equipment is used. The SP20-QD 20 watt solar panel is
recommended for a RAWS where communication equipment is used (for
example, GOES, voice, cell phone, or radio).
The solar panel selected for the RAWS depends on the station
power requirements, specifically the communication equipment
selected for the station.
The SP10-QD solar panel outputs 0.59 Amps, 8.9 Watts typical peak power.
The SP20-QD solar panel outputs 1.17 Amps, 18 Watts typical peak power.
The solar panel attaches to the connector panel labeled “BATT
CHARGER/SOLAR PANEL”. Inside the RAWS environmental enclosure, the
“BATT CHARGER/SOLAR PANEL” connector pin A and pin B are wired to
the CH100’s “CHG” and “CHG” ports. Polarity does not matter; either lead
can be connected to either terminal. The CH100 has two functions: blocking
any current flow from the battery to the solar panel, and limiting the source
current to the battery.
19
RAWS-F Remote Automated Weather Station for Fire Weather
5.1.3 Maintenance
An occasional cleaning of the glass improves the solar panel’s efficiency.
5.1.4 Calibration
No calibration is required.
5.1.5 Troubleshooting
If a problem is suspected, the solar panel may be checked by measuring the
voltage output from the solar panel. Check the voltage with a voltmeter
connected between the two leads going to the CH100’s “CHG” “CHG”
terminals located inside the environmental enclosure (15 to 28 Vdc). There
must be solar radiation incident on the panel and there must be a load
connected to the solar panel. The load can be the datalogger, other equipment,
or a 75 ohm resistor capable of dissipating solar panel power between the two
leads. No voltage output implies a bad solar panel, regulator, or cable. The
magnitude of the voltage output depends on the incident solar radiation. Check
the sensor cable. Disconnect the connector and look for damaged pins. Try
connecting a substitute panel. Obtain an RMA number before returning the
SP10/20-QD to Campbell Scientific for repair.
5.2 Charger/Regulator
5.2.1 General Description
The 12 Volt charger/regulator (pn CH100) is a charging regulator for 12 V
rechargeable batteries. The CH100 is connected to an external charging source
such as an unregulated solar panel (pn SP20-QD or SP10-QD) or a wall
charger (pn 9591). The CH100 has two functions: blocking any current flow
from the battery to the solar panel, and limiting the source current to the
battery.
FIGURE 5-1. 12-volt charger/regulator
20
5.2.2 Wiring
RAWS-F Remote Automated Weather Station for Fire Weather
The leads from the RAWS connector panel “BATT CHARGER/SOLAR
PANEL” connector COLOR CODED PURPLE are wired to the CH100
“CHG” terminals. Polarity does not matter; either lead can be connected to
either terminal. The charge indicating diode should be “ON” when voltage to
the charging circuitry (CHG Terminals) is present.
An internal and/or external battery can be connected to the CH100 by means of
the INT (Internal) or EXT (External) connectors. The battery red lead connects
to the positive battery terminal and the black lead connects to the negative
terminal.
NOTE
WARNING
CAUTION
CAUTION
5.2.3 Maintenance
An “external battery cable” (pn 6186) ships with the RAWS-F.
Connect 12 V power to the datalogger and/or peripherals using the “+12 and
Ground” terminals. The ON-OFF switch applies power to these 12 V
terminals.
Reversal of battery polarity will damage the CH100 or
battery.
A battery must be attached for the CH100 to function
correctly as a power supply.
It is possible to leave two batteries connected. The battery
connections are diode isolated; however, if one of the
batteries fails, it could draw all the charging current and the
other battery will be discharged.
There are no user-serviceable parts on the CH100. No maintenance is required.
5.2.4 Calibration
5.2.5 Troubleshooting
No calibration is required.
If a problem is suspected, the CH100 may be checked by measuring:
•input voltage (CHG terminals) from the solar panel (15 to 28 Vdc) or
input voltage from the wall charger (pn 9591) about 18 Vac RMS
•charging output voltage (BATT INT or EXT terminal) with battery
disconnected about 13.5 to 14 Vdc
•power out (+12 terminals) about 11 to 14 Vdc
21
RAWS-F Remote Automated Weather Station for Fire Weather
No voltage output implies a bad solar panel, regulator, or battery. If problems
persist, obtain an RMA number and return the device to Campbell Scientific
for repair.
NOTE
Power out (+12 terminals) is controlled by the CH100 ON-OFF
switch position.
5.3 Battery
5.3.1 General Description
Two power supply options are offered for the RAWS-F. The ─24 option
includes a 24 A h sealed rechargeable battery, an external 20 W solar panel,
and a CH100 regulator. The ─7 option includes a 7 Ahr sealed rechargeable
battery, an external 10 W solar panel, and a CH100 regulator.
WARNING
5.3.2 Wiring
RAWS rechargeable batteries are designed to be float
charged. Permanent damage occurs and battery life is
shortened if the battery is allowed to discharge below
10.5 volts.
The RAWS rechargeable battery should be connected to the CH100’s INT
(Internal) connector. The battery red lead connects to the positive battery
terminal and the black lead connects to the negative terminal. If desired, an
external battery can be connected to the CH100’s EXT (External) connector.
An “external battery cable” (pn 6186) ships with the RAWS-F.
WARNING
CAUTION
5.3.3 Maintenance
5.3.4 Calibration
Reversal of battery polarity will damage the CH100 or
battery.
It is possible to leave two batteries connected. The battery
connections are diode isolated; however, if one of the
batteries fails, it could draw all the charging current and the
other battery will be discharged.
There are no user-serviceable parts on the battery. No maintenance is required.
No calibration is required.
22
RAWS-F Remote Automated Weather Station for Fire Weather
5.3.5 Troubleshooting
If a problem is suspected, measure the +12 V and Ground terminal on the
CR1000 printed circuit board wiring panel. Acceptable readings are +11 to
+14 Vdc. Use PC200W software to collect the 1-HR data table from the
CR1000 datalogger and review the historical record of battery voltage.
5.4 GOES Transmitter (Optional)
5.4.1 General Description
The High Data Rate GOES Transmitter (pn TX320) shown in FIGURE 5-2
supports one-way communication, via satellite, from a Campbell Scientific
datalogger to a ground receiving station. Satellite telemetry offers a convenient
communication alternative for field stations where phone systems or RF
systems are impractical or rendered unreliable after a tragedy to the local
infrastructure. Data transmission rates of 100, 300, and 1200 bps are
supported. Because clock accuracy is critical for GOES satellite telemetry, the
TX320 includes a robust, TCXO-based real-time clock and a GPS receiver.
The TX320 has two siting requirements for proper operation. The GOES
antenna must have a clear view of the spacecraft. The GOES antenna is
directional and should be aimed at the spacecraft; both elevation and azimuth
are unique to the location of the planet and must be set. A poorly aimed
antenna will cause a drop in signal strength or possibly prevent successful
transmission.
NOTE
For more information on the TX320 and antenna siting, go to our website at
www.campbellsci.com, enter the “TX320” in the “Search” box, and go the
equipment manual. The TX320 manual is also provided on the ResourceDVD
which ships with the RAWS-F.
The spacecraft specific DCP-Setup parameters for the GOES
transmitter must be entered in the CR1000KD menus for the
TX320 to work properly.
23
RAWS-F Remote Automated Weather Station for Fire Weather
5.4.2 Wiring
5.4.3 Maintenance
FIGURE 5-2. GOES transmitter
The TX320 is mounted inside the RAWS environmental enclosure and the
transmitter connections are described below.
TABLE 5-1. GOES Transmitter Connections
TX320 ConnectorConnects to
CS I/O CR1000 CS I/O port via SC12 cable (shipped with the
RAWS-F)
GPS GPS antenna cable
RF Out GOES antenna cable
Green Power Port Battery Cable Junction Connector
There are no user-serviceable parts on the GOES transmitter. No maintenance
is required.
24
RAWS-F Remote Automated Weather Station for Fire Weather
5.4.4 Calibration
No calibration is required.
5.4.5 Troubleshooting
If a problem is suspected, the TX320 may be checked by measuring the +12 V
and Ground terminal on the CR1000 PC-board wiring panel. Acceptable
readings are +11 to +14 Vdc. Check the SC12 cable connection between the
CR1000 wiring panel and the TX320. Press the TX320 diagnostic button to
query the state of the transmitter. If problems persist, obtain an RMA number
and return the device to Campbell Scientific for repair.
5.5 CR1000 Keyboard/Display
5.5.1 General Description
The CR1000 Keyboard/Display (pn CR1000KD) shown in FIGURE 5-3 is
used to check datalogger status, to display or plot sensor readings and stored
values, to enter numeric data, or to change port/flag state. The CR1000KD is
powered from the CR1000 printed circuit board “CS I/O” connector via our
9-pin serial cable (pn 10873) that ships with the RAWS.
NOTE
Use the CR1000KD menus to enter GOES DCP-Setup
Parameters and to select the wind speed/direction sensor on the
RAWS.
FIGURE 5-3. CR1000 Keyboard/Display
5.5.2 Wiring
The CR1000KD connects to the CR1000 PC board “CS I/O” 9-Pin connector
using our 9-pin serial cable (pn 10873) that ships with the RAWS.
25
RAWS-F Remote Automated Weather Station for Fire Weather
5.5.3 Maintenance
There are no user-serviceable parts on the CR1000KD. No maintenance is
required.
5.5.4 Calibration
No calibration is required.
5.5.5 Troubleshooting
If a problem is suspected, the CR1000KD may be checked by connecting the
CR1000KD to the CR1000 PC board 9-Pin “CS I/O” connector using our 9-pin
serial cable (pn 10873). The CR1000KD display should be visible. Check the
CH100’s ON-OFF switch. If the display is not visible, check the CR1000
wiring panel for 12 volt power. If the CR1000 is unresponsive to CR1000KD
key strokes, there might be a problem with the CR1000 datalogger. Obtain an
RMA number before returning this equipment to Campbell Scientific for
repair.
5.6 CR1000 Datalogger
5.6.1 General Description
The CR1000 shown in FIGURE 5-4 provides sensor measurement,
timekeeping, data reduction, data/program storage, and control functions. The
CR1000 includes 4 MB of memory for data and program storage. A lithium
battery backs up the RAM and real-time clock. The CR1000 also suspends
execution when primary power drops below 9.6 V, reducing the possibility of
inaccurate measurements.
FIGURE 5-4. CR1000 and printed circuit wiring panel
26
5.6.2 Wiring
5.6.3 Maintenance
RAWS-F Remote Automated Weather Station for Fire Weather
FIGURE 5-5. Printed circuit board wiring panel connector ID
The CR1000 is mounted inside the RAWS environmental enclosure and
fastened to the CR1000 printed circuit board wiring panel; connect 12 V power
to the CR1000 printed circuit board wiring panel green power connector. The
CH100’s ON-OFF switch applies power to the 12 V terminals.
5.6.4 Calibration
5.6.5 Troubleshooting
6. Desiccant
There are no user-serviceable parts on the CR1000. No maintenance is
required.
Recalibrate the CR1000 every two years. Obtain an RMA number before
returning the CR1000 to Campbell Scientific for recalibration.
If a problem is suspected, the CR1000 may be checked by connecting the
CR1000KD to the CR1000 printed circuit board 9-Pin “CS I/O” connector
using our 9-pin serial cable (pn 10873). The CR1000KD display should be
visible. If the display is not visible, check the CR1000 printed circuit board for
12 volt power. If the CR1000 is unresponsive to CR1000KD key strokes, then
there might be a problem with the CR1000. Contact a Campbell Scientific
applications engineer for assistance. Obtain an RMA number before returning
this equipment to Campbell Scientific for repair.
A humidity indicator card and desiccant packs are provided with the weather
station. Place the humidity indicator card and 2 ea. desiccant packs inside the
enclosure. Desiccant packets inside the enclosure should be replaced with
fresh packets when the upper dot on the indicator begins to turn pink. The
indicator tab does not need to be replaced unless the colored circles overrun. A
humidity indicator card (pn 28878) and desiccant pack (pn 4905) may be
ordered through Campbell Scientific. Desiccant packs inside of the datalogger
do not require replacement under normal conditions.
27
RAWS-F Remote Automated Weather Station for Fire Weather
7. References
General guidelines for site selection are listed below.
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, NC, 27711.
WMO, (1983): Guide to Meteorological Instruments and Methods of
Observation, World Meteorological Organization, No. 8, 5th edition,
Geneva, Switzerland.
The State Climatologist, (1985): Publication of the American Association of
State Climatologists: Height and Exposure Standards, for Sensors on
Automated Weather Stations, vol. 9, No. 4.
EPA, (1989): Quality Assurance Handbook for Air Pollution Measurement
Systems, EPA Office of Research and Development, Research Triangle
Park, North Carolina 27711.
8. RAWS Orientation
8.1 Determining True North and Sensor Orientation
Orientation of the wind direction sensor is done after the datalogger has been
programmed and the location of True North has been determined. True North
is usually found by reading a magnetic compass and applying the site-specific
correction for magnetic declination; where the magnetic declination is the
number of degrees between True North and Magnetic North. Magnetic
declination for a specific site can be obtained from a USGS map, local airport,
or through the web calculator offered by the USGS (Section 8.2, USGS Web Calculator). A general map showing magnetic declination for the contiguous
United States is shown in FIGURE 8-1.
Declination angles are always subtracted from the compass reading to find
True North. A declination angle east of True North is reported as positive a
value and is subtracted from 360 (0) degrees to find True North as shown
FIGURE 8-2. A declination angle west of True North is reported as a negative
value and is also subtracted from 0 (360) degrees to find True North as shown
in FIGURE 8-3. Note that when a negative number is subtracted from a
positive number, the resulting arithmetic operation is addition.
For example, the declination for Longmont, CO is 10.1°, thus True North is
360° ─ 10.1°, or 349.9° as read on a compass. Likewise, the declination for
Mc Henry, IL is ─2.6°, and True North is 0° ─ (─2.6°), or 2.6° as read on a
compass.
28
RAWS-F Remote Automated Weather Station for Fire Weather
FIGURE 8-1. Magnetic declination for the contiguous United States
29
RAWS-F Remote Automated Weather Station for Fire Weather
FIGURE 8-2. A declination angle east of True North (positive) is
subtracted from 360 (0) degrees to find True North
30
FIGURE 8-3. A declination angle west of True North (negative) is
subtracted from 0 (360) degrees to find True North
8.2 USGS Web Calculator
The USGS provides an easy way of determining the declination of a specific
site. Since magnetic declination fluctuates with time, it should be adjusted
each time the wind sensor orientation is adjusted. The calculator can be
accessed at: www.ngdc.noaa.gov/geomagmodels/Declination.jsp. FIGURE 8-4
shows an example for Logan, UT.
RAWS-F Remote Automated Weather Station for Fire Weather
FIGURE 8-4. USGS web calculator
In the example above the declination for Logan, UT is 12º 24′ or 12.4º. As
shown in FIGURE 8-4, the declination for Utah is east (positive), so True
North for this site is 360 ─ 12.4 = 347.6 degrees. The annual change is 7
minutes west per year or ─7 minutes/year.
31
RAWS-F Remote Automated Weather Station for Fire Weather