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DAVIS Sensor Mounting Arm Install Manual

Sensor mounting arm

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The Sensor Mounting Arm provides an ideal mounting location for all of your
Davis weather station sensors. This manual is designed to take you through the
process required to assemble and mount the Sensor Mounting Arm. Please take
the time to read through this manual before beginning.
C
OMPONENTS
The Sensor Mounting Arm includes the following components. Please make
sure you have all listed components before continuing.
Sensor Arm
Mounting Bracket
16.5-foot (5 m) Ground Wire
Installation Hardware Kit
One 3/8" Cable Clamp
a.
Four 3/16" Cable Clamps
b.
Three 3/8" Cable Ties
c.
Four 1/4" x 1-1/2"
d.
(38 mm) Lag Screws
Eleven #8 Flat Washers
e.
Six #8 Split Lock Washers
f.
Six #8-32 Hex Nuts
g.
Eight 1/4" Flat Washers
h.
Eight 1/4" Split Lock
i.
Washers
Eight 1/4"-20 Hex Nuts
j.
Four 5/16" Flat Washers
k.
Four 5/16" Split Lock
l.
Washers
Four 5/16"-18 Hex Nuts
m.
S
E N S O R
M
O U N T I N G
A
R M
Product # 7702

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Summary of Contents for DAVIS Sensor Mounting Arm

  • Page 1 The Sensor Mounting Arm provides an ideal mounting location for all of your Davis weather station sensors. This manual is designed to take you through the process required to assemble and mount the Sensor Mounting Arm. Please take the time to read through this manual before beginning.
  • Page 2 The assembly of the sensor arm involves attaching the mounting bracket and then attaching all desired sensors. Instructions for attaching sensors (other than the anemometer) to the Sensor Mounting Arm are contained in the manual for that sensor or for the accessory which allows that sensor to be attached (such as the Radiation Shield or the Rain Collector Shelf).
  • Page 3 The illustration below shows the sensor arm and indicates which holes are used by the various sensors, brackets, and accessories. Typical Sensor Mounting Arm Installation The illustration below shows a typical Sensor Mounting Arm installation with all possible sensors attached to the sensor arm. Assembling the Sensor Mounting Arm...
  • Page 4 4. Secure the mounting bracket to the sensor arm using a #8 flat washer, #8 split lock washer, and a #8-32 hex nut on each screw end. Tighten until the mounting bracket is securely fastened to the sensor arm. Page 4 RACKET TTACHING THE OUNTING RACKET Sensor Mounting Arm...
  • Page 5 However, if you have an anemometer with a straight arm and a Rain Collector attached to the Sensor Mounting Arm, the Rain Collector might create obstruction problems which result in inaccurate wind speed and direction readings.
  • Page 6 4. Slide one of the saddles over the end of the U-bolt so the anemometer arm is con- tained in the circle created by the U-bolt and the saddle. 5. Repeat this process for the other 1/2” U-bolt and saddle. Page 6 NEMOMETER TTACHED ELOW LACE OLT AND ADDLE ON NEMOMETER ENSOR Sensor Mounting Arm...
  • Page 7 6. Slide the ends of the U-bolts into the appropriate holes at the end of the sensor arm nearest the mounting bracket. 7. Secure the U-bolts and anemometer arm in place using a 1/4” flat washer, 1/4” split lock washer and 1/4” hex nut on each of the U-bolt ends. Tighten the hex nuts with your hand so the arm is gently held in place.
  • Page 8 13. Secure the cable clamp and cable in place using an #8 flat washer and an #8-32 hex nut. Tighten the hex nut until the cable is held snugly within the cable clamp. Page 8 OSITION NEMOMETER TTACH THE ABLE LAMP Sensor Mounting Arm...
  • Page 9 Attaching the Anemometer Above the Radiation Shield To attach the anemometer above the sensor arm, you will need the anemome- ter, sensor arm, two 1/2” U-bolts, two 1/2” saddles, four 1/4” flat washers, four 1/4” split lock washers, four 1/4” hex nuts, one cable clamp, one #8-32 x 3/4”...
  • Page 10 1/4” hex nut on each of the ends of the U-bolts. Tighten the hex nuts with your hand so the arm is gently held in place. Do not tighten fully until instructed to later on. Page 10 LIDE OLTS INTO OLES TTACH THE OLTS AND NEMOMETER Sensor Mounting Arm...
  • Page 11 10. Slide the anemometer arm backwards/forwards until the end of the anemometer arm extends just 1/2” past the second U-bolt/saddle. 11. Once the anemometer arm is correctly positioned, tighten the hex nuts. In order to keep the anemometer arm steady in high winds, tighten the hex nuts until you notice the anemometer arm just begin to buckle underneath the U-Bolt.
  • Page 12 1-1/2” and 2-3/8” (38 mm and 60 mm). Mounting the Sensor Mounting Arm on a Wooden Post To attach the Sensor Mounting Arm to a wooden post, you will need the sensor arm assembly (with mounting bracket and sensors attached), four 1/4” x 1-1/2”...
  • Page 13 (with mounting bracket and sensors attached), two 1-1/2” U-bolts, four 1/4” flat washers, four 1/4” lock washers, and four 1/4” hex nuts. Note: When mounting on a small pipe, the Sensor Mounting Arm must be mounted at the top of the pipe.
  • Page 14 Mounting the Sensor Mounting Arm on a Large Pipe Follow the instructions below to mount the Sensor Mounting Arm on a pipe with an outside diameter between 1-1/2” and 2-3/8” (38 mm and 60 mm). To attach to a large pipe, you will need the sensor arm assembly (with mounting bracket and sensors attached), two 2-1/4”...
  • Page 15 AFETY AND UILDING When installing the Sensor Mounting Arm, a 2” (5 cm) pipe should be ade- quate for general homeowner’s backyard or open-field agricultural locations for a mounting height of 6 to 8 feet (2 to 2.5 m) provided that low wind-loading conditions apply and the pipe is anchored to a suitable foundation.
  • Page 16: Technical Support

    Product Number: 7702 Davis Instruments Part Number: 7395-091 Sensor Mounting Arm Rev. C Manual (7/7/99) DI:Weather:Accessories:Sensor Mounting Arm This product complies with the essential protection requirements of the EC EMC Directive 89/336/EC. © Davis Instruments Corp. 1997. All rights reserved. ENSOR OUNTING...