DAVIS Sensor Mounting Arm Bedienungsanleitung

Product#7702

ENSOR

OUNTING

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 MountingArm. Please take

the time to read through this manual before beginning.

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

Four 3/16” Cable Clamps

Three 3/8” Cable Ties

Four 1/4” x 1-1/2”

(38 mm) Lag Screws

Eleven #8 Flat Washers

Six #8 Split Lock Washers

Six #8-32 Hex Nuts

Eight 1/4” Flat Washers

Eight 1/4” Split Lock

Washers

Eight 1/4”-20 Hex Nuts

Four 5/16” Flat Washers

Four 5/16” Split Lock

Washers

Four 5/16”-18 Hex Nuts

Page2 SensorMountingArm

Two 1/2” U-Bolts (for

anemometer arm)

Two 1/2” Saddles

Two 1-1/2” U-Bolts (for

pipe with outside diameter

between 1” and 1-1/4”

(25 mm and 31 mm)

Two 2-1/4” U-Bolts (for

pipe with outside diameter

between1-1/2” and 2-3/8”

(38 mm and 60 mm)

Two 2-1/4” Saddles

Three #8-32 x 3/4”

(19 mm) Screws

Two #8-32 x 2 -1/2”

(64 mm) Screws

OOLS

AND

ATERIALS

EEDED

In addition to the components listed above, you will need some of the follow-

ing tools and materials. Please be sure you have everything you need before

beginning the installation.

✦

Medium Phillips Screwdriver

✦

Wrench or Pliers

✦

11/32” (9 mm) Nut Driver or Socket Wrench

If mounting the anemometer on the same side as the Radiation Shield.

SSEMBLING

THE

ENSOR

OUNTING

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). The Sensor Mounting Arm

includes provisions for attaching the following sensors:

✦

Anemometer

✦

External Temperature Sensor, External Temperature/Humidity Sensor, or Stainless

Steel Temperature Probe (with Radiation Shield or Solar-Fan-Aspirated Radiation

Shield)

✦

Rain Collector (with Rain Collector Shelf)

✦

UV Sensor (with or without Tilting Mechanism)

✦

Solar Radiation Sensor (with or without Tilting Mechanism)

AssemblingtheSensorMountingArm Page3

The Sensor Arm

The illustration below shows the sensor arm and indicates which holes are

used by the various sensors, brackets, and accessories.

ENSOR

OLE

SSIGNMENTS

Typical Sensor Mounting Arm Installation

The illustration below shows a typical Sensor Mounting Arm installation

with all possible sensors attached to the sensor arm.

YPICAL

ENSOR

OUNTING

NSTALLATION

Page4 SensorMountingArm

TTACHING

THE

OUNTING

RACKET

In order to attach the mounting bracket to the sensor arm, you will need the

sensor arm, mounting bracket, two #8-32 x 2-1/2” screws, four #8 ﬂat washers,

two #8 split lock washers, and two #8-32 hex nuts.

1. Place one #8 ﬂat washer over the end of each of the #8-32 x 2-1/2” screws.

2. Position the mounting bracket so the holes in the mounting bracket line up with the

appropriate holes on the sensor arm.

3. Slide each of the #8-32 x 2-1/2” screws (with washer) through the holes on the sensor

arm and the mounting bracket.

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.

TTACHING

THE

OUNTING

RACKET

AttachingtheAnemometer Page5

TTACHING

THE

NEMOMETER

You may mount the anemometer on either side of the sensor arm. The pre-

ferred mounting location for the anemometer is on the end closest to the

mounting bracket. 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. In this case (and only in this case), you may want to mount

the anemometer on the end farthest from the mounting bracket.

In general, you should mount the anemometer below the sensor arm, following

the instructions in “Attaching the Anemometer Below the Sensor Arm (Pre-

ferred)” on page 6. If, however, you need to mount the anemometer arm on the

end farthest from the mounting bracket

and

you have a radiation shield

mounted on that side as well, attach the anemometer above the sensor arm, fol-

lowing the instructions in “Attaching the Anemometer Above the Radiation

Shield” on page 9.

YPICAL

NEMOMETER

OUNTS

Page6 SensorMountingArm

Attaching the Anemometer Below the Sensor Arm (Preferred)

To attach the anemometer below 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” screw, one #8 ﬂat washer, and one #8-32 hex nut.

NEMOMETER

TTACHED

ELOW

ENSOR

1. If necessary, disconnect the anemometer from your weather station.

Your weather station manual contains instructions for connecting the two.

Simply reverse the directions to disconnect them.

2. If necessary, disconnect the anemometer arm from the anemometer base.

Your weather station manual contains instructions for connecting the two.

Simply reverse the directions to disconnect them.

3. Place one of the 1/2” U-bolts over the anemometer arm.

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.

LACE

U-B

OLT

AND

ADDLE

NEMOMETER

5. Repeat this process for the other 1/2” U-bolt and saddle.

AttachingtheAnemometer Page7

6. Slide the ends of the U-bolts into the appropriate holes at the end of the sensor arm

nearest the mounting bracket.

LIDE

U-B

OLTS

INTO

OLES

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. Do

not tighten fully until instructed to do so later on.

TTACH

THE

U-B

OLTS

AND

NEMOMETER

Page8 SensorMountingArm

8. Slide the anemometer arm backwards/forwards until the end of the anemometer arm

extends just 1/2” (13 mm) past the second U-bolt/saddle.

OSITION

NEMOMETER

9. 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.

10.Place a cable clamp around the anemometer cable.

11. Slide a #8-32 x 3/4”screw down through the indicated hole on the sensor arm.

TTACH

THE

ABLE

LAMP

12. Slide the hole in the cable clamp over the end of the #8-32 x 3/4” screw.

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.

AttachingtheAnemometer Page9

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” screw, one #8 ﬂat washer, and one #8-32 hex nut.

NEMOMETER

TTACHED

BOVE

ENSOR

1. If necessary, remove the Radiation Shield from the sensor arm.

You cannot mount the anemometer above the Radiation Shield if the radia-

tion shield has already been attached to the sensor arm.

2. If necessary, disconnect the anemometer from your weather station.

Your weather station manual contains instructions for connecting the two.

Simply reverse the directions to disconnect them.

3. If necessary, disconnect the anemometer arm from the anemometer base.

Your weather station manual contains instructions for connecting the two.

Simply reverse the directions to disconnect them.

4. Place one of the 1/2” U-bolts over the anemometer arm.

5. 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.

LACE

U-B

OLT

AND

ADDLE

NEMOMETER

6. Repeat this process for the other 1/2” (13 mm) U-bolt and saddle.

Page10 SensorMountingArm

7. Position the U-bolts/saddles on top of the sensor arm on the side farthest from the

mounting bracket so the ends of the U-bolts drop into the appropriate holes.

LIDE

U-B

OLTS

INTO

HOLES

8. While holding the U-bolts in place, turn the sensor arm over so the protruding ends

of the U-bolts are visible.

9. 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 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.

ATTACH THE U-BOLTS AND ANEMOMETER ARM

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