Choosing a Location for the Temp/Hum Station
Consider the following factors as you choose a location:
• Do not mount the station near any source of cold or heat that might distort temperature measurements.
• The station’s radiation shield works best in a location with a steady breeze. Mount it away from fences, buildings, trees, or other obstructions.
• Mount the station over vegetation or soil if possible.
• Do not install over or near sprinklers. The radiation shield is not designed to protect sensors from water that is sprayed upwards.
• If mounting on a building, the preferred location is on the north side in the Northern Hemisphere and on the south side in the Southern Hemisphere. Mount it on the side that receives the least sunlight throughout the day.
Testing Transmission from Proposed Location
It is very important to test reception from the proposed location before permanently mounting the Temp/Hum Station.
• Place the Temp/Hum Station at the intended mounting site, or have someone hold it there, so you can walk around with the console for a few minutes.
Note: Rotating the antenna on the station and on the console may help improve reception. Generally, for best reception the two antennas should be oriented parallel to each other.
• Test wireless reception anywhere you might want to use or mount your console now or in the future. Take your time.
• If you aren’t picking up strong signals where you intend to place your console, better to move the Temp/Hum Station now than after it has been mounted. Experiment.
Mounting the Temp/Hum Station
The Temp/Hum Station can be mounted on a pole or on a vertical surface such as a wooden post or wall. Remember that enough space must be available to mount both the Radiation Shield and the SIM Shelter in the same general location. It is recommended that the SIM Shelter be mounted below the Radiation Shield, ideally perpendicular to it.
Mounting on a Pole
Use a pole having an outside diameter between 1" and 1-1/4" (25 – 31 mm).
1. Hold the mounting bracket against the pole. Put two U-bolts around the pole and insert the ends through the holes in the back of the mounting bracket.
2. Secure the mounting bracket using 1/4" flat washers and 1/4" hex nuts.
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Tighten all four sets of washers and hex nuts until the mounting bracket is firmly mounted on the pole.
3. Next, install the SIM Shelter. While holding the shelter against the pole, place a
U-bolt around the pole and through the two holes on at the top of the shelter.
4. Place a flat washer, a lock washer and a hex nut on each of the bolt ends.
5. Using an adjustable wrench or 7/16" wrench, tighten the nuts.
6. Place the second U-bolt around the pole and through the two holes at the bottom of the shelter.
7. Put a flat washer, a lock washer, and a hex nut on each bolt end, and tighten the hex nuts.
8. Use 8”Cable Ties to secure sensor cable to pole to prevent fraying in wind.
Note: Review the illustration below to see how the Temp/Hum Station is mounted on a pole.
2-1/8" U-Bolts
1/4" Flat Washer
1/4" Hex Nut
Sensor Cable
2-1/8" U-Bolts
Flat
Washer
Hex
Nut
Mounting on a Pole
Mounting on a Vertical Surface
1. Using four 1/4" x 1-1/2" lag screws, attach the mounting bracket to the surface in the desired location.
Drill holes using a 3/16" (5 mm) drill bit. Use a carpenter’s level when marking the holes, to ensure that the bracket will be level.
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2. Next, install the SIM Shelter. With a 3/16" (5 mm) drill bit, drill two holes approximately 2" (50 mm) apart. Use a carpenter’s level to ensure the holes will be level.
3. Drill two more holes 7-1/32" below the upper holes.
4. Insert the 1/4" x 1-1/2" lag screws through the flat washers, and through the holes at the top of the shelter into the post.
Using an adjustable wrench or 7/16" wrench, tighten the lag screws.
5. Insert the 1/4" x 1-1/2" lag screws through the flat washers, and through the holes at the bottom of the shelter into the post.
6. Using an adjustable wrench or 7/16" wrench, tighten the lag screws.
Note: Review the illustration below to see how the Temp/Hum Station is mounted on a vertical surface.
1/4" x 1-1/2" Lag Screws
Sensor Cable
1/4" Flat Washers
1/4" Lock Washers
1/4" x 1-1/2" Lag Screws
Mounting on a Vertical Surface
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Maintenance
• The ability of the radiation shield to keep fresh air flowing over the sensors will be reduced if the shield plates become dirty. Clean the surfaces of the shield plates periodically with a damp cloth.
• Keep areas between the shield plates free of debris that may obstruct air flow.
Examples are leaves, twigs, webs, nests.
• DO NOT remove nesting insects or animals by spraying insect killer of any kind into the radiation shield. Chemicals could easily damage the circuitry inside your temperature/humidity station.
• If necessary, it is possible to disassemble the Radiation shield. To do this, unscrew the three machine screws attaching the Mounting Bracket to the Radiation Shield.
When removing the last screw, place your hand below the Radiation Shield to keep it from falling. Once the screws are removed, the individual plates that make up the Radiation Shield can be separated and the sensor is exposed.
A Note on Securing Cables
To prevent fraying or cutting of cables, secure them so they will not whip about in the wind. Secure a cable to a metal pole by wrapping electrical tape around it or using the supplied cable ties. Make sure cables are secure by placing clips or ties approximately every 3 – 5' (1 – 1.6 m).
Note:
Cable Tie
Cable Clip
Do not use metal staples or a staple gun to secure cables. Metal staples—especially when installed with a staple gun—have a tendency to cut the cables.
Contacting Davis Instruments
If you have questions about your Temp/Hum station, or encounter problems installing or operating the station, please contact Davis Technical Support.
Note: Please do not return items to the factory for repair without prior authorization.
(510) 732-7814 for Technical Support, Monday – Friday, 7:00 a.m. – 5:30 p.m. Pacific
Time.
(510) 670-0589 Fax to Customer Service or Tech Support.
[email protected] E-mail to Technical Support.
[email protected] General e-mail.
www.davisnet.com Copies of User Manuals are available on the “Support” page.
Watch for FAQs and other updates. Subscribe to the e-newsletter.
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S p e c i f i c a t i o n s
General
Operating Temperature . . . . . . . . . . . . . . . . . . . . . . -40° to +150° F (-40° to +65° C)
Non-operating Temperature . . . . . . . . . . . . . . . . . . . -50° to +158° F (-45° to +70° C)
Current Draw, Sensors & Transmitter only . . . . . . . . 0.14 mA (average), 30 mA
(peak) at 3 VDC
Battery: Sensors & Transmitter. . . . . . . . . . . . . . . . . CR-123 3-Volt Lithium cell
Battery Life . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 months
Sensor Type
Temperature . . . . . . . . . . . . . . . . . . . . . . . . . . . Thermistor
Relative Humidity . . . . . . . . . . . . . . . . . . . . . . . Film capacitor element
Housing Material . . . . . . . . . . . . . . . . . . . . . . . . . . . UV-resistant PVC plastic
Dimensions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8.25" wide x 7.25" long x 7.75" high (210 mm x 184 mm x 197 mm)
Weight . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3.5 lbs. (.1.6 kg)
Wireless Communications
Transmit/Receive Frequency . . . . . . . . . . . . . . . . . US Models: 902-928 MHz
FHSS, Overseas Models: 868.0
- 868.6 MHz FHSS.
ID Codes Available . . . . . . . . . . . . . . . . . . . . . . . . . 8
Output Power . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 902-928 MHz FHSS:
FCC-certified low power, less than 8 mW, no license required
868.0 - 868.6 MHz FHSS.
CE-certified, less than 8 mW, no license required
Range
Line of Sight . . . . . . . . . . . . . . . . . . . . . . . . . . . up to 1000 feet (300 m)
Through Walls . . . . . . . . . . . . . . . . . . . . . . . . . 200 to 400 feet (75 to 150 m)
Sensor Output (as used by Davis Instruments weather station consoles.)
Temperature (Air)
Resolution and Units. . . . . . . . . . . . . . . . . . . . . 1°F or 1°C (user-selectable)
Range. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -40° to +150° F (-40° to +65° C)
Sensor Accuracy. . . . . . . . . . . . . . . . . . . . . . . . ±1°F (±0.5°C) under 110°F
(43°C), ±2°F (±1°C) over 110°F
(43°C)
(see chart)
Radiation Induced Error . . . . . . . . . . . . . . . . . . +2°F (1°C) at solar noon
(insolation = 1040 W/m2, avg. wind speed 2 mph (1 m/s))
Update Interval . . . . . . . . . . . . . . . . . . . . . . . . . 10 seconds
Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Instant Reading (user adjustable)
Alarms . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . High and Low Thresholds from
Instant Reading
Relative Humidity
Range. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 to 100% RH
Accuracy. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ±3% (0 to 90% RH), ±4% (90 to
100% RH)
Drift . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . up to ±2% per year
Update Interval . . . . . . . . . . . . . . . . . . . . . . . . . every 50 seconds
Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Instant (user adjustable)
Alarms . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . High and Low Threshold from
Instant Reading
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Product Numbers: 6382, 6382OV
Davis Instruments Part Number: 07395.242
Wireless Temperature/Humidity Station Installation Manual
Rev. B Manual, 12/28/09
This product complies with the essential protection requirements of the EC EMC Directve 2004/108/EC.
3465 Diablo Avenue, Hayward, CA 94545-2778 U.S.A.
510-732-9229 • Fax: 510-732-9188
E-mail: [email protected] • www.davisnet.com
