DAVIS Vantage Pro ISS Fan-Aspirated Add User Manual

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AN

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ADIATION SHIELD

For Vantage ProTM or Vantage Pro Plus

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NTEGRATED SENSOR SUITE

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NSTALLATION MANUAL

The Vantage Pro Integrated Sensor Suite (ISS) with the Fan-Aspirated Radia­tion Shield uses a combination of fan-aspiration and passive shielding to mini­mize the effects of solar radiation-induced temperature error.

SPIRATED

-A

DDENDUM TO THE

Fan-Aspirated ISS Addendum Overview

This addendum provides additional information specific to the installation and
use of the fan-aspirated radiation shield only, and is intended to be used in con­junction with the “Integrated Sensor Suite Installation Manual.”

The table below shows the location of the information required to install and
maintain your Fan-Aspirated ISS.

S

ECTION/PROCEDURE

Tools for Setup
Preparing the Anemometer
Disassembling the Radiation Shield
Making Junction Board Connections
Powering ISS and Testing Communications
Powering and Testing the Fan
Reassembling the Radiation Shield
Preparing the Rain Collector
Choosing a Site for the ISS
Mounting the ISS
Additional Mounting Options
Fan-Aspirated ISS Options
Fan-Aspirated ISS Maintenance
Fan-Aspirated ISS Troubleshooting
Fan-Aspirated ISS Specifications

FAN A

A

DDENDUM

SPIRATED

ISS I

TM

NSTALLATION

M

ANUAL

Product # 6151, 6151C, 6161, 6161C

Components

The Fan-Aspirated ISS includes these components:

Solar
Panel

(wireless

models

only)

Aspirated

Radiation Shield

Anemometer
Base

Junction Board

Cover

40 feet

(12.2 meter)

Anemometer

Cable

Debris Screen
(place inside

rain collector cone

after installation)

Anemometer

Vane

Drip Ring

Wind Cups

Anemometer
Arm

Additional Components for Cabled Models

Additional Components for Wireless Models

3 Volt Lithium
Battery

1.2 Volt Nicad
Batteries

#4 Self-Threading
Screws (2)

Battery Covers (2)
O-Rings (2)

100 feet

(30 meter)

Standard 4-Conductor

Cable

#4 x 1/2" Screw
#4 Flat Washer
Cable Clamp

110 Volt AC

Power Adapter

Page 2 Fan-Aspirated Radiation Shield

The hardware shown here is provided for assembly and mounting:

U-Bolts

1/4" x 3" Lag Screws

1/4" Flat Washers

1/4" Lock Washers

1/4" Hex Nuts

Nut Plate

.05"

Allen Wrench

#4 x 1-1/8"

Machine Screw

Lock Washer

Additional Components on Vantage Pro Plus

Vantage Pro Plus includes an ultravio-

let (UV) sensor and a solar radiation
sensor . These two sensors are mounted
next to the rain collector on your ISS.

Note: Please make every effort when handling your

ISS not to touch the small white diffusers on
top of the UV and solar radiation sensors. Oil
from the skin will reduce their sensitivity . Clean
the diffusers using ethyl alcohol on a soft cloth
(NOT rubbing alcohol). The solar radiation
sensor may also be cleaned with soap and
water.

UV and
Solar
Radiation
Sensors

Sensor
Mounting
Arms

#4 Tooth

#4 Flat

Washer

#4-40

Hex Nut

Vantage Pro Plus ISS

Tools for Installation

Refer to this section in your ISS Installation Manual.

Preparing the Anemometer

Refer to this section in your ISS Installation Manual.

Tools for Installation Page 3

1.

2.

Preparing the ISS and Radiation Shield

The radiation shield must be partially disassembled in order to make necessary
cable connections, and to install batteries in the solar-powered wireless ISS.

The ISS sensors are connected by cables to the Sensor Interface Module (SIM),
located inside the radiation shield. The SIM contains electronics that measure
and store weather values for transmission to the console via cable or radio
waves. The radiation shield’s white plastic plates protect the SIM from sun and
other sources of radiated and reflected heat, and from precipitation.

The following tasks are performed while the radiation shield is disassembled:

✦

Check the rain, solar radiation, and UV cable connections to the SIM sensor

✦

Connect the anemometer sensor cable to the SIM
Connect the console cable to the SIM (cabled versions only)

✦
✦

Make power connections to the ISS

✦

Change the Davis Talk ID for wireless communication, if necessary
Verify that your console is receiving and displaying data

✦
✦

Power and test the fan

Opening the Radiation Shield

Open up the radiation shield by separating the top and bottom parts as shown
in the following illustrations.

Turn the rain collector side of the ISS upside down.

Hold plates
while inverting

Inverting the ISS

Remove the three wing nuts, lock washers and flat washers located on the
underside of the radiation shield.

Page 4 Fan-Aspirated Radiation Shield

3.

4.

1.

Turn the ISS right-side up with the rain collector on top.
Hold onto the rain collector and lift off the top part of the ISS, exposing the

fan plate on the bottom section of the radiation shield.

#8 Wing Nuts
#8 Lock Washers
#8 Flat Washers

Fan Plate

Junction Board

Removing the Wing Nuts

Verifying Sensor Connections:

Locate the SIM inside the upper section of the radiation shield.

Locating the ISS SIM

Separating the Radiation Shield

Sensor Interface Module (SIM)

Sensor Interface Module (SIM)

Solar Power Cable

Solar Power Cable

(wireless models only)

(wireless models only)

Sensor Interface Cable

Sensor Interface Cable

Preparing the ISS and Radiation Shield Page 5

2.

3.

Verify that the rain sensor cable is plugged into the receptacle labeled
“RAIN” on the SIM.

Transmitter ID Switches

onsole Cable

led models only)

3-Volt

Lithium Battery

wireless models only)

SIM Power Cable

(wireless models only)

ISS SIM Connections

WIND RAIN SOLAR UV

Sensor Interface

Cable

Anemometer Cable

Rain Collector Cable (factory installed)

Solar Radiation Cable

UV Sensor Cable

(factory
installed
on Pro Plus
models)

If you have a Vantage Pro Plus, verify that the UV and solar radiation sen­sors are plugged into the SIM.

Connecting Anemometer to SIM

Refer to this section in your ISS Installation Manual.

Cabled Vantage Pro: Powering the ISS and Testing Communication
with the Console

Refer to this section in your ISS Installation Manual.

Wireless Vantage Pro: Powering the ISS and Testing Communica­tion with the Console

Refer to this section in your ISS Installation Manual.

Page 6 Fan-Aspirated Radiation Shield

Powering the Fan

The Cabled Vantage Pro is powered by an AC-power adapter. The Wireless
Vantage Pro ISS is solar-powered with batteries for overnight power. Refer to
the Junction Board Connections illustration when powering the fans.

Solar and SIM Power Connectors

(Wireless ISS Only) Fan Connector

+VSIM

+VSIM

+VSOL

MOTOR

For Future
Tachometer

+5V

AC Power Adapter Connector

(Cabled ISS Only)

Junction Board Connections

T/H & SIM

Temp/Hum Sensor

Connector

TACH

Sensor Interface

Module Connector

Cabled Vantage Pro

1.

Locate the Junction Board on the fan plate (See page 5).

2.

Connect the AC-power adapter to the +5V connector on the Junction Board.

3.

Plug the AC-power adapter into an AC outlet.

4.

Check to see that the fan is blowing air up and away from the Temp/Hum
Sensor.

5.

Unplug the AC power adapter from the AC outlet until you have finished
mounting the ISS.

6.

Secure the AC power cable to the fan plate with the supplied cable clip.

Battery
Compartments

Fan Plate

#4 x 1/2" Screw

(not used)

Motor

#4 Flat Washer
Cable Clamp

AC Power-Adapter

Cable

Sensor Cable

AC Power-Adapter Cable Routing

Junction Board

Preparing the ISS and Radiation Shield Page 7

1.

Wireless Vantage Pro

The solar-powered fan on the Wireless ISS will begin operating as soon as you
install the batteries. To prevent discharging the batteries, you should only
power the fan in a Wireless Vantage Pro immediately before mounting the ISS
in its final location.

1.

On the Radiation Shield fan

plate, insert the O-ring in the

#4 Screws

groove around the edge of
each battery compartment.

2.

Insert a NiCad battery in each

compartment, matching the
plus (+) sign on the battery
with the plus (+) sign in the
battery compartment.

3.

Verify that the fan is blowing
air up and away from the
Temp/Hum sensor.

4.

Attach the battery covers to

Air

Flow

Battery Cover

1.2 Volt Nicad
Battery

O-Ring

Battery
Compartment

the battery compartments
using two #4 x 3/8” (9.5 mm)
screws each.

Installing the Batteries

(Wireless Vantage Pro Only)

Reassembling the Radiation Shield

Make sure the Temp/
Hum sensor cable runs
through the provided
cable channels and that
the fan unit is seated on
the fan plate.

2.

Line up the threaded

Motor Connector

rods on the upper sec­tion of the Radiation
Shield with the mount­ing holes in the lower

Temp/Hum

Sensor Cable

Channel

section.

3.

Slide the two sections
partially together, leav­ing enough clearance so
that you have access to
the Junction Board.

Sensor Cable Channel in Fan Plate and Fan Deflector

Page 8 Fan-Aspirated Radiation Shield

Fan Unit

Fan Deflector

Junction Board

Fan Plate

Check the Junction Board cable connections: SIM Sensor, SIM Power,
Motor, Temp/Hum Sensor, and Solar Power. Refer to the figure below and
also to the Junction Board Connections figure on page 7.

Solar Power

Cable

(wireless models)

Temp/Hum

Sensor Cable

Cable Clamp

AC Power Adapter

Cable

(cabled models)

Junction Board Cable Connections

SIM Power

Cable

(wireless models)

SIM Sensor

Interface Cable

Install the Junction Board Cover as show below. The Junction Board Cover
presses easily into place when you are installing it. To remove the cover,
press gently in on both sides to release the latches holding it in place.

4.

5.

6.

7.

8.

Junction Board Cover

Junction Board

Junction Board Cover Installation

Press in on Sides

near latches

to Remove Cover

Slide the two sections of the Radiation Shield completely together.
Place the flat washers, lock washers and plastic wing nuts over the

threaded rods.
Finger-tighten the wing nuts until they hold the radiation shield plates

firmly in place.

Preparing the Rain Collector

Refer to this section in your ISS Installation Manual.

Choosing a Site for the ISS

Refer to this section in your ISS Installation Manual.

Preparing the Rain Collector Page 9

Mounting the ISS

Refer to this section in your ISS Installation Manual.

Additional Mounting Options

Refer to this section in your ISS Installation Manual.

Fan-Aspirated ISS Options

Batteries

The Wireless Fan-Aspirated ISS is solar powered and is supplied with two
NiCad C-cell batteries. At your option you may decide to install either zero,
one, or two C-cell batteries.

✦

Install two fan batteries for maximum length of overnight aspiration but
with slightly lower average daytime aspiration.

✦

Install only one fan battery for some overnight aspiration but with slightly
higher average daytime aspiration.

Install no batteries for maximum daytime aspiration and no nighttime

✦

aspiration.

Low-Current Fan Unit

A low-current fan unit (#7759) is available that uses less power than the stan­dard fan. This allows the solar-powered Fan-Aspirated ISS to run for a longer
period of time during darkness. The low-current fan is recommended for use in
high latitudes during the Winter months, in climates that experience extended
periods of cloudy weather, or for any location with limited solar charging.

Fan-Aspirated ISS Maintenance

Keep the surfaces clean as the Fan-Aspirated Radiation Shield is less effec-

✦

tive when the surfaces are dirty. Remove dust from the solar panel and the
screen with a damp cloth.

Remove any debris that obstructs air flow between the radiation shield

✦

parts e.g., leaves, twigs, webs, and nests.

✦

Avoid spraying insect killer of any kind into the radiation shield as this
may damage the sensors and the shield.

Once a year: replace the motor (Part # 7758), batteries (solar-powered mod-

✦

els only), and remove any debris lodged inside the unit.

Replacing Fan Batteries

1.

Retrieve your Fan-Aspirated ISS and place on a stable work surface.

2.

Disassemble the Radiation Shield (See page 4).

Page 10 Fan-Aspirated Radiation Shield

3.

Replace the old batteries (See page 8).

4.

Assemble the Radiation Shield (See page 8).

5.

Mount the Fan-Aspirated ISS in the desired location.

Fan-Aspirated ISS Troubleshooting

If you are experiencing problems with your Fan-Aspirated Radiation Shield,
first be sure to check all cable connections. If you are unable to solve the prob­lem, please call Davis Technical Support. We’ll be glad to help. Most questions
can be answered while you’re on the phone. You can also email us for support,
or visit our website. Sorry, we are unable to accept collect calls.

Note:

Please do not return items to the factory for repair without prior authorization.

Contacting Davis Instruments

[phone]

Pacific Time.

[phone]
www.davisnet.com Copies of User Manuals are available on the “Support”

page. Watch for FAQs and other updates. Subscribe to the e-newsletter.
[e-mail] E-mail to Technical Support.

for Technical Support, Monday – Friday, 7:00 a.m. – 5:30 p.m.

Fax to Customer Service or Tech Support.

Diagram of Operation

The diamgram below shows how the Fan-Aspirated Radiation Shield draws
cool outside air up through the sensor chamber and through the walls sur­rounding the sensor chamber.

Fan-Aspirated Radiation Shield in Operation

Fan-Aspirated ISS Troubleshooting Page 11

Fan-Aspirated ISS Specifications

Aspiration Rate . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 215 ft./min. (1.1 m/s) (AC-powered)

Radiation-Induced Temperature Error. . . . . . . . . . . . . . . 0.5°F (0.3°C)

Note: The above error specification is an estimate, based on data from a solar-powered model, with a
measured error of 0.6°F at the above conditions and an aspiration rate of 190 ft./min.

Operating Temperature . . . . . . . . . . . . . . . . . . . . . . . . . –40° to +140° F (–40° to +60° C)

Non-operating Temperature . . . . . . . . . . . . . . . . . . . . . . –50° to +158° F (–45° to +70° C)

ISS Primary Power Input

Wireless ISS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . solar panel

Cabled ISS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . receives power from Vantage Pro Console

ISS secondary power (Wireless Only). . . . . . . . . . . . . . . . CR-123A 3-volt lithium battery (approx. two years

Fan Primary Power Input

Wireless ISS. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . solar panel

Cabled ISS. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . AC power adapter, 5VDC, 200 mA, regulated

Fan secondary power (Wireless Only) . . . . . . . . . . . . . . . 1 or 2 - 1.2 Volt NiCad C-cells

FCC Part 15 Class B Registration Warning

This equipment has been tested and found to comply with the limits for a class B digital device, pursuant
to Part 15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful
interference in a residential installation. This equipment generates, uses and can radiate radio frequency
energy and, if not installed and used in accordance with the instructions, may cause harmful interference
to radio communications. However , there is no guarantee that interference will not occur in a particular
installation.
If this equipment does cause harmful interference to radio or television reception, which can be deter­mined by turning the equipment off and on, the user is encouraged to try to correct the interference by
one or more of the following measures:

✦ Reorient or relocate the receiving antenna.
✦ Increase the separation between the equipment and receiver.
✦ Connect the equipment into an outlet on a circuit different from that to which the receiver

is connected.

✦ Consult the dealer or an experienced radio/TV technician for help.

Changes or modifications not expressly approved in writing by Davis Instruments may void the user's
authority to operate this equipment.

190 ft./min (.96 m/s) (solar-powered, typical)
[At solar noon, insolation = 1040 W/m2]

(Reference: RM Young model 43408)

battery life.)

Product Numbers: 6151, 6151C, 6161, 6161C
Davis Instruments Part Number: 7395.152

Fan-Aspirated Radiation Shield Addendum to the Integrated Sensor Suite Installation Manual
Rev A. Manual (7/30/01)

Copyright ©2001 Davis Instruments Corp. All rights reserved.

3465 Diablo Avenue, Hayward, CA 94545-2778

510-732-9229 • Fax: [phone]

E-mail: [e-mail] • www.davisnet.com