All Weather Inc 2030 User manual

All Weather Inc. • 1065 National Drive • Sacramento, CA 95834 • USA • 800.824.5873 • www.allweatherinc.com
User’s
Manual
Rev. B
Model2030
MicroResponseAnemometer

Copyright ©2009–2021, All Weather, Inc.
All Rights Reserved. The information contained herein is proprietary and is provided solely for the
purpose of allowing customers to operate and/or service All Weather, Inc. manufactured equipment
and is not to be released, reproduced, or used for any other purpose without written permission of
All Weather, Inc.
Throughout this manual, trademarked names might be used. Rather than put a trademark (™)
symbol in every occurrence of a trademarked name, we state herein that we are using the names only
in an editorial fashion and to the benefit of the trademark owner, and with no intention of
infringement. All Weather, Inc. and the All Weather, Inc. logo are trademarks of All Weather, Inc.
Disclaimer
The information and specifications described in this manual are subject to change without notice.
All Weather, Inc.
1065 National Drive, Suite 1
Sacramento, CA 95834
Tel.: [phone]
Fax: [phone]
Contact Customer Service
•Phone support is available from 8:00am - 4:30pm PT, Monday through Friday. Call 916-928-
1000 and ask for “Service.”
•Online support is available by filling out a request at www.allweatherinc.com/support/online-support/
•E-mail your support request to [email protected]

Model 2030 Micro Response Anemometer User's Manual
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Revision History
Revision Date Summary of Changes
A 2011 Mar 11 Initial release
B 2021 Apr 2 Updated Specifications to current format

Model 2030 Micro Response Anemometer User's Manual
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TABLE OF CONTENTS
1. INTRODUCTION.........................................................................................................1
2. INSTALLATION...........................................................................................................2
2.1 Assembly ............................................................................................................................2
2.2 Site Selection......................................................................................................................2
2.3 Mounting.............................................................................................................................3
2.4 Orientation..........................................................................................................................3
2.5 Wiring.................................................................................................................................4
3. THEORY OF OPERATION......................................................................................... 5
4. CALIBRATION ............................................................................................................6
5. MAINTENANCE..........................................................................................................8
5.1 Inspecting the Bearings.......................................................................................................8
5.2 Precautions..........................................................................................................................8
5.3 Replacing the Bearings.......................................................................................................8
5.4 Maintenance Kit..................................................................................................................9
5.5 AWOS Periodic Maintenance.............................................................................................9
5.5.1 Tools and Equipment Required ..................................................................................9
5.5.2 Monthly Maintenance.................................................................................................9
5.5.3 Quarterly Maintenance................................................................................................9
5.5.4 Annual Maintenance.................................................................................................10
6. SPECIFICATIONS .................................................................................................... 11
7. WARRANTY.............................................................................................................. 12
8. DRAWINGS .............................................................................................................. 13

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1. INTRODUCTION
The Model 2030 Micro Response Anemometer is a highly responsive three-cup anemometer that
uses a photon-coupled chopper to produce an output pulse with a frequency proportional to wind
speed.
•The threshold of the anemometer is 1 mile per hour.
•The entire anemometer assembly, with the exception of the photon-coupled chopper, is
made from stainless steel, anodized aluminum, and carbon/graphite composite.
•A quick-release waterproof connector is provided.
The Model 2030 Anemometer can be used in conjunction with several interfaces:
•All Weather Inc.'s Q-Net data acquisition system
•All Weather Inc.'s Automated Weather Observing System (AWOS), interfaced to the
Model 1798 Sensor Interface Processor (SIP)
•1190 series data acquisition systems
•Model 1220 or Model 1280 Wind Speed Signal Conditioning Modules, which provide an
analog output proportional to wind speed.

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2. INSTALLATION
This instrument is thoroughly tested and fully calibrated at the factory and is ready for
installation.
2.1 ASSEMBLY
With the exception of installing the cup assembly, the Model 2030 Micro Response Anemometer
is ready for mounting. Install the cup assembly as described in the steps below.
Loosen the two set screws with a 1/16" Allen wrench, and slide the cup assembly over the
anemometer shaft. Be certain that the flat face of the shaft faces toward the set screws.
The cup assembly hub should slide down over the shaft and body and seat against the shaft ring.
When correctly in place, there should be no drag between the skirt of the hub and the shoulder of
the body. Tighten both set screws to 7 in. lbs.
Spin the cup wheel by hand to assure smooth operation. The cup wheel should coast to a smooth
stop.
2.2 SITE SELECTION
Location of the sensor is critical for accurate wind measurements. The standard exposure of an
anemometer or vane over open, level terrain is 10 meters above the ground. Open, level terrain is
defined as level ground with no obstruction within 300 meters. In locations where obstructions
are not large, such as residential areas, and are distributed more or less evenly, the sensor may be
placed at an effective height of h + 10 meters, where his the approximate height (in meters) of
the various obstacles. As an example, in a location where trees and buildings reach to about
5 meters, the sensors must be placed on a 15-meter mast to avoid erroneous results.
In areas where large obstructions do exist within 300 meters of the sensor, the following table
can be used to calculate the proper height of the sensor (his the height of the obstruction).
Table 1*
Distance to Obstruction
(h)
Minimum Height of Anemometer
Above Ground Level
h
1.75h to 2.25h
5h
1.67h
10h
1.50h
20h
1.25h
25h
1.13h
30h
h
* Handbook of Meteorological Instruments, 2nd Edition. Measurement of
Surface Wind, Volume 4. London, HMSO: 1981

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Example:
If there is a building 10 meters high and 50 meters away, the anemometer should be at least 16.7
meters above the ground. But, if the same building is 200 meters away, the sensor could be
lowered to 12.5 meters.
When the sensor is mounted on a building, the building itself disturbs the wind flow and must be
taken into account before installation. For large buildings, other than buildings such as
lighthouses and skyscrapers, the sensor must be mounted as far away from the edge of the
building as possible and at a height at least ¾ the height of the building. Thus, with a building
28 meters high, a rooftop tower at least 21 meters high should be used.
2.3 MOUNTING
The Model 2030 Micro Response Contact Anemometer mounts directly to the Model 2023
Crossarm without any additional accessories. The crossarm is generally used to mount one each
Model 2030 Anemometer and a Model 2020 Vane to form a wind speed and direction
measurement set. If the Model 2030 Anemometer is to be mounted separately, a Model 20231
Mast Adapter should be ordered as an accessory. Both the Model 2023 Crossarm and the Model
20231 Mast Adapter will mount on a mast with an outside diameter of 1" (25.4 mm) or ¾"
Schedule 40 pipe. Set screws are provided in either case for securing to the mast. The lower part
of the anemometer body will slip over the pin on the crossarm or the mast adapter. When in
place, tighten all mounting screws.
For AWOS installations, refer to the 2020/2030 AWOS Mounting figure in the Drawings
chapter of this manual.
2.4 ORIENTATION
The anemometer should be mounted with its axis as close to vertical as possible to provide for
the best measurement of horizontal wind movement. If the sensor must be removed from the
mounting adapter or crossarm, loosen only the Allen head screw on the sensor base and slide the
sensor off the adapter. Do not remove the mounting pin from the crossarm or the mast adapter
from the mast since these serve to maintain sensor alignment.

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2.5 WIRING
Figure 1 shows the sensor wiring when connecting to the Model 1190 DCP, as used in AWOS
systems. Cable number 20306 can be ordered from All Weather, Inc. for direct connection. The
cable comes with a mating connector at the sensor end and bare wires for connection at the
DCP's terminal block TB2. For other applications, when cable 20306 is not used, refer to Figure 1
as a wiring guide.
Figure 1. Sensor Wiring in Model 1190 DCP

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3. THEORY OF OPERATION
A light emitting diode in combination with a light sensitive transistor is mounted directly to the
anemometer connector. A slotted wheel connected to the anemometer shaft rotates with the shaft
and interrupts the light beam between the light emitting diode and the phototransistor. This
interruption causes a change in the transistor’s collector to emitter current.
The current changes are amplified and conditioned by the Model 1220 Wind Speed Signal
Conditioning Module, which provides an analog output signal proportional to wind speed.

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4. CALIBRATION
The slotted wheel contains 30 slots, providing thirty electrical pulses per revolution. The output
frequency of the anemometer may be determined by the following equation:
𝐹𝐻𝑧 = 9.901(𝑉𝑚𝑝ℎ− 0.476)
Or the velocity may be determined as follows:
𝑉𝑚𝑝ℎ=𝐹𝐻𝑧
9.901 + 0.476
𝑉𝑘𝑛𝑜𝑡𝑠 =𝐹𝐻𝑧
11.395 + 0.648
where FHz is the frequency in Hertz, Vmph is the velocity in miles/hour, and Vknots is the velocity in
knots.
Calibration data in Table 2 were compiled from tests in which the anemometer was operated in a
wind tunnel equipped with NIST-traceable measuring instruments.
Table 2. Model 2030 Anemometer Calibration Table
Frequency
(Hz)
Shaft Speed
(rpm)
Wind Speed
(mph)
Wind Speed
(m/s)
Wind Speed
(knots)
25
50
3.27
1.46
2.84
30
60
3.78
1.69
3.28
150
300
15.90
7.11
13.82
450
900
46.20
20.65
40.14
750
1500
76.50
34.20
66.47
900
1800
91.65
40.97
79.64
983
1965
100.00
44.70
86.89
1100
2200
111.85
50.00
97.19
The Model 1220 Wind Speed Signal Conditioning Module is equipped with a calibration feature
consisting of a constant frequency oscillator and a switch to apply the oscillator to the signal
conditioning circuitry. This feature allows the operator to quickly set up the output signals for
zero and full-scale values. Refer to the Model 1220 manual for additional information.
To verify calibration of the anemometer, rotate the anemometer shaft at one of the known rpm
values shown in Table 2 and measure the sensor output with a frequency counter or oscilloscope.
If a Model 1220 module is used, place the module into OPERATE mode and measure the
frequency between the BLK/WHT and the BLK test points (TP110 and TP100). The measured
frequency should equal the value indicated in the calibration table.

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Table 3. Wind Speed Conversion Factors
miles per hour
knots
meters per second
feet per second
mph x 0.868 = knots
knots x 1.152 = mph
m/s x 2.237 = mph
ft/s x 0.682 = mph
mph x 0.447 = m/s
knots x 0.515 = m/s
m/s x 1.943 = knots
ft/s x 0.592 = knots
mph x 1.467 = ft/s
knots x 1.689 = ft/s
m/s x 3.281 = ft/s
ft/s x 0.305 = m/s

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5. MAINTENANCE
Maintenance of the sensor consists mainly of checking the bearings for wear, and replacing them
as necessary.
For maintenance of a sensor as part of an AWOS system, refer to the AWOS Periodic
Maintenance section below.
5.1 INSPECTING THE BEARINGS
The anemometer bearings should be inspected for wear periodically. The bearings are sealed and
protected to prevent dirt and moisture from entering. With time, however, the seals will no
longer prevent dirt from entering the bearing race and the bearings may fail. When this happens,
the sensor will no longer rotate freely. The bearings can be replaced in the field or the
anemometer can be returned to All Weather Inc. for servicing.
To inspect the bearings, turn the anemometer cup assembly to check that it turns freely and
smoothly. If it does not, replace the bearings as described below.
5.2 PRECAUTIONS
Since corrosion is the main problem associated with wind sensors, apply a thick coating of
silicon lubricant to the connector shell after the connector is attached and in place. Also, use an
anti-seize thread compound such as Loctite Silver Grade Anti-Seize Compound on all screws
and fasteners whenever disassembly of the sensor is required. The use of these lubricants will
make servicing of the sensor easier and will prevent seizure of the fastening hardware. It is also
advisable to apply lubricant to the mounting adapter surfaces prior to final sensor installation. A
commercial grade lubricant recommended for use is DOOR-EASE, available at hardware and
automotive stores. In addition to these precautions, check that the drain hole in the base of the
sensor is free of debris so that water drains away rather than collecting within the sensor.
5.3 REPLACING THE BEARINGS
Follow the steps below to replace the bearings in the field.
1. Remove the cup wheel with a 1/16" Allen wrench.
2. Remove the electrical receptacle/photon coupled chopper assembly by removing the four
4-40 screws and sliding the entire unit out.
3. Remove the lower body section by removing three 6-32 screws.
4. Remove the E-clip from the shaft at the top of the unit and slide the entire shaft down and
out of the unit, taking care not to bend the shaft.
5. Lift the upper bearing out by working a knife edge under the flanged outer race.
6. Using a rod of about ¼" diameter passed down from the top, carefully knock the lower
bearing out.

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7. Clean all parts and install new bearings. Press the bearings in place by applying pressure
to the outer race only. The bearing could be damaged by pressing against the inner race.
8. Re-assemble all parts in the reverse order of disassembly. Check for free and smooth
rotation of the shaft before and after installing the cup wheel. The receptacle/photon-
coupled chopper assembly should be installed with the large connector key toward the
top of the unit. Wipe the lens areas of the chopper clean with a soft cloth prior to re-
assembly.
9. Should there be any problems with the photon-coupled chopper, replace the entire
connector/ chopper assembly. Check for proper excitation current polarity and
phototransistor circuit polarity prior to connecting power to the new assembly.
Use great care in disassembly and re-assembly of the sensor. Never use excessive force to make
parts fit together. Over-tightening of fasteners will either break the fastener or damage the
machined threads of the sensor.
Any difficulties encountered during servicing that are not correctable by the user should be
referred to the All Weather Inc. Customer Service Department.
5.4 MAINTENANCE KIT
A maintenance kit (P/N M488141) is available for the Model 2030 that provides the parts
necessary for basic upkeep of the instrument. The kit includes those parts that are the most
susceptible to wear, such as bearings and set screws. To order this kit, contact All Weather Inc.
and specify Part Number M488141.
5.5 AWOS PERIODIC MAINTENANCE
Periodic maintenance of AWOS sensors is divided into three categories: monthly maintenance,
quarterly maintenance, and annual maintenance. The listed maintenance routines are performed
according to that schedule.
5.5.1 Tools and Equipment Required
•½" wrench
•Silicon lubricant
•Non-corrosive lubricant (bee's wax)
•Model 1231 run-up motor
5.5.2 Monthly Maintenance
Monthly maintenance of the Model 2030 consists of visually verifying that the cups are moving
freely and that the displayed wind speed is reasonable.
5.5.3 Quarterly Maintenance
Quarterly maintenance of the Model 2030 is identical to the monthly maintenance procedure:
visually verify that the cups are moving freely and that the displayed wind speed is reasonable.

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5.5.4 Annual Maintenance
During annual maintenance, perform the following procedures in addition to those outlined for
monthly and quarterly maintenance.
1. Set the DCP's LCD display to display wind speed, and verify that the displayed wind
speed is reasonable.
2. Remove the anemometer cup assembly by loosening the set screw on the side of the cup
assembly collar.
3. Connect a Model 1231 run-up motor to the anemometer shaft and power the motor on.
The DCP's LED display should read between 79 and 81 knots.
4. Replace the cup assembly.
5. Inspect the anemometer cups for damage, and replace if necessary.
6. (The following test should be performed in windless conditions. If one person is perform-
ing the test alone, the anemometer will need to be removed from the tower and connected
to a test cable within sight of the DCP display.)
With the cup assembly in place, spin the cups by hand until the DCP display reads
greater than 5 knots. After releasing the cups, they will slow and the displayed speed will
gradually decrease. If the display reads 2 knots or less while the cups are still turning, the
bearings are good. If the cups stop before slowing to a speed of 2 knots or less, replace
the bearings.
7. Remove the sensor from the mounting bracket by loosening the clamp screw located at
the base of the unit.
8. Clean the drain hole on the bottom of the sensor to ensure that debris does not prevent
water from draining out of the sensor.
9. Use an anti-seize thread compound such as Loctite Silver Grade Anti-Seize Compound
on the clamp screw and reinstall the sensor. The sensor mounting hole should be aligned
with the pin on the base of the mounting bracket.
10. Inspect all mounting hardware and cable assemblies for wear and damage. Replace as
necessary.
11. Apply a thick coating of silicon lubricant to the connector shell after the connector is
attached and in place. Use a non-corrosive lubricant such as bee wax on all screws and
fasteners. The use of these lubricants will make future servicing easier.

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6. SPECIFICATIONS
Parameter
Specification
Sensor Type
3-cup assembly, carbon graphite composite, 2" diameter cups
Transducer
Light Chopper
Light Source
LED
Excitation
12 V DC, 25 mA
Output
30 pulses/rev,
900 Hz @ 88.8 mph
Range
0–75 m/s (0–168 mph, 0–156 kt)
Threshold
0.2 m/s (0.5 mph)
Accuracy
±1% (±0.15 mph)
Delay Distance
1.5 m (5 ft)
Materials
Stainless steel and anodized aluminum
Operating Temp. Range
-40°C to +60°C
Turning Radius
97 mm (3.8")
Mounting
Direct to crossarm or w/adapter
to 1" (25 mm) O.D. mast
Body Size
305 x 70 mm
(12" high x 2.75" diameter)
Weight
1.1 kg (2.5 lb)
Shipping Weight
3.2 kg (7 lb)

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7. WARRANTY
Unless specified otherwise, All Weather Inc. (the Company) warrants its products to be free from
defects in material and workmanship under normal use and service for one year from date of
shipment, subject to the following conditions:
a. The obligation of the Company under this warranty is limited to repairing or replacing
items or parts which have been returned to the Company and which upon examination are
disclosed, to the Company’s satisfaction, to have been defective in material or
workmanship at time of manufacture.
b. The claimant shall pay the cost of shipping any part or instrument to the Company. If the
Company determines the part to be defective in material or workmanship, the Company
shall prepay the cost of shipping the repaired instrument to the claimant. Under no
circumstances will the Company reimburse claimant for cost incurred in removing and/or
reinstalling replacement parts.
c. The warranty shall not apply to any Company products which have been subjected to
misuse, negligence, or accident.
d. This warranty and the Company’s obligation thereunder is in lieu of all other warranties,
express or implied, including warranties of merchantability and fitness for a particular
purpose, consequential damages, and all other obligations or liabilities.
No other person or organization is authorized to give any other warranty or to assume any
additional obligation on the Company’s behalf, unless made in writing and signed by an
authorized officer of the Company.

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8. DRAWINGS
The following pages include reference drawings to assist in installation and maintenance of this
instrument.