Campbell 27106T Manuale utente

27106T Gill Propeller

Anemometer

Revision: 2/11

Campbell Scientific, Inc.

PLEASE READ FIRST

About this manual

Please note that this manual was originally produced by Campbell Scientific Inc. (CSI) primarily

for the US market. Some spellings, weights and measures may reflect this origin.

Some useful conversion factors:

Area: 1 in2(square inch) = 645 mm2

Length: 1 in. (inch) = 25.4 mm

1 ft (foot) = 304.8 mm

1 yard = 0.914 m

1 mile = 1.609 km

Mass: 1 oz. (ounce) = 28.35 g

1 lb (pound weight) = 0.454 kg

Pressure: 1 psi (lb/in2) = 68.95 mb

Volume: 1 US gallon = 3.785 litres

In addition, part ordering numbers may vary. For example, the CABLE5CBL is a CSI part

number and known as a FIN5COND at Campbell Scientific Canada (CSC). CSC Technical

Support will be pleased to assist with any questions.

27106T Table of Contents

PDF viewers note: These page numbers refer to the printed version of this document. Use

the Adobe Acrobat® bookmarks tab for links to specific sections.

1. General Description.....................................................1

2. Specifications ..............................................................1

3. Installation....................................................................2

3.1 Unpack Equipment and Assemble the 27106T.........................................2

3.2 Mounting to Crossarm ..............................................................................3

4. Wiring............................................................................5

5. Programming ...............................................................5

5.1 Wind Speed Multiplier and Offset............................................................5

5.2 Example Programs....................................................................................6

5.2.1 CR1000 Example Program .............................................................6

5.2.2 CR10X Example Program ..............................................................7

6. Sensor Maintenance....................................................8

6.1 Flange Bearing Replacement....................................................................8

6.2 Tach-Generator Replacement ...................................................................9

7. Troubleshooting ........................................................10

8. References .................................................................10

Figures

3-1. 27106T Mounted to a Crossarm via the CM220 .....................................4

3-2. 27106T Mounted to a Crossarm via a NU-RAIL Fitting ........................4

Tables

1-1. Recommended Lead Lengths ..................................................................1

4-1. Connections to Campbell Scientific Dataloggers....................................5

5-1. Wind Speed Multiplier ............................................................................6

5-2. Wiring for Example Programs ................................................................6

27106T Gill Propeller Anemometer

1. General Description

The 27106T Gill Propeller Anemometer sensor is used to measure vertical

wind speed. Wind speed is measured with a helicoid-shaped, four-blade

propeller. Rotation of the propeller produces an analog voltage signal

proportional to wind speed with polarity determined by the direction of the

wind.

The R.M. Young Instruction Manual includes additional information on the

operating principles, installation and maintenance of the sensor.

Lead length for the 27106T is specified when the sensor is ordered. Table 1-1

gives the recommended lead length for mounting the sensor at the top of the

tripod/tower with a 019ALU or CM200 series crossarm.

TABLE 1-1. Recommended Lead Lengths

CM6 CM10 CM110 CM115 CM120 UT10 UT20 UT30

10’ 13’ 13’ 19’ 24’ 13’ 24’ 34’

The 27106T ships with:

(1) ResourceCD

(1) 1180 Mount

2. Specifications

Range

Axial Flow: 0 to 90 mph (0 to 40 m/s)

All Angles: 0 to 80 mph (0 to 35 m/s)

Threshold Sensitivity*: 0.8 mph (0.4 m/s)

Distance Constant*: <6.9 feet (2.1 m)

Pitch: 11.8 inch (30.0 cm) air passage per

revolution

Signal Output: Analog DC Voltage proportional to axial

wind component. Polarity reverses with

reverse rotation.

1800 rpm (500 mV) = 9.0 m/s (20.1 mph)

Operating Temperature: -50° to +50°C

Propeller Description: 4-blade helicoids propeller molded of

carbon fiber thermoplastic

27106T Gill Propeller Anemometer

Dimensions

Overall Length: 17 inch (43 cm)

Propeller Diameter: 8 inch (20 cm)

Housing Diameter: 1 inch (2.5 cm)

1180 Mounting Pipe Description: 12-in. long, 3/4-in. IPS schedule 40 pipe

(1.05 in. OD)

Weight: 1.2 lbs (0.5 kg)

*Threshold and Distant Constant values are for axial flows.

Manufactured by RM Young (Traverse City, MI) and cabled by Campbell

Scientific for use with our dataloggers.

The black outer jacket of the cable is Santoprene® rubber. This

compound was chosen for its resistance to temperature extremes,

moisture, and UV degradation. However, this jacket will

support combustion in air. It is rated as slow burning when

tested according to U.L. 94 H.B. and will pass FMVSS302.

Local fire codes may preclude its use inside buildings.

NOTE

3. Installation

3.1 Unpack Equipment and Assemble the 27106T

Upon receipt of your shipment, immediately open the shipping carton and

ensure that you have all of the 27106T’s components.

The shipping carton should include:

x16” x 2” x 2” box labeled Propeller Anemometer

x9” x 9” x 2” box labeled Carbon Fiber Propeller

xCable (routed through the 1180 mounting pipe to mating connector)

x1180 Mounting Pipe

Make sure that you have removed everything (two boxes,

cable, and mounting pipe) from the shipping carton before

discarding the shipping foam and shipping carton. Foam

included with the shipping carton may conceal items. If an

item listed above is not initially visible, remove the foam

from the shipping carton and thoroughly inspect both sides

of the foam for the item. Immediately contact Campbell

Scientific if any item is missing.

CAUTION

27106T Gill Propeller Anemometer

Once everything has been retrieved from the shipping carton, assemble the

27106T by doing the following:

1. Remove the propeller shaft from the Propeller Anemometer box

2. Remove the propeller from the Carbon Fiber Propeller box

3. Remove the nut that is on the top of the propeller shaft

4. Place the propeller onto the top of the propeller shaft

5. Replace the nut and tighten to secure the propeller to the shaft

6. Remove the dust cap from the cable’s connector and attach the cable to the

anemometer’s connector

3.2 Mounting to Crossarm

Tools Required:

x5/32” Allen wrench for the NU-RAIL fitting or ½” open-end wrench for

CM220 Right Angle mount

xUV resistant cable ties

xsmall pair of diagonal-cutting pliers

x6” to 10” torpedo level

This anemometer can be mounted to a CM200-series crossarm or a 019ALU

crossarm. The 1180’s pipe that ships with the 27106 mounts to a CM200

series crossarm via the CM220 (Figure 3-1) or 1049 NU-RAIL Fitting (Figures

3-2) or to the 019ALU’s NU-RAIL fitting (Figure 3-2).

When mounting the sensor to the crossarm, care should be taken to ensure that

there are no obstacles, or sensors, that will interfere with the vertical air flow

from either the up or down direction.

Route the sensor cable along the underside of the crossarm to the tower/tripod

mast, and to the instrument enclosure. Secure the sensor cable to the crossarm

and mast using cable ties.

27106T Gill Propeller Anemometer

Mounting Pipe

FIGURE 3-1. 27106T Mounted to a Crossarm via the CM220

FIGURE 3-2. 27106T Mounted to a Crossarm via a NU-RAIL Fitting

U-RAIL

Fitting Crossarm

CM220

Crossarm

27106T Gill Propeller Anemometer

4. Wiring

Connections to Campbell Scientific dataloggers are given in Table 4-1. When

Short Cut for Windows software is used to create the datalogger program, the

sensor should be wired to the channels shown in the wiring diagram created by

Short Cut.

TABLE 4-1. Connections to Campbell Scientific Dataloggers

Color

Wire Label

CR800

CR850

CR5000

CR3000

CR1000

CR510

CR500

CR10(X)

21X,

CR7

CR23X

CR200(X)

White Signal SE Analog SE Analog SE Analog SE Analog

Black Signal Reference

Clear Shield

5. Programming

This section is for users who write their own programs. A datalogger program

to measure this sensor can be generated using Campbell Scientific’s Short Cut

Program Builder software. You do not need to read this section to use Short

Cut software.

In CRBasic, wind speed is measured by the VoltSE instruction. Dataloggers

that use CRBasic include the CR200(X) series, CR800, CR850, CR1000,

CR3000, CR5000, and CR9000(X).

In Edlog, wind speed is measured by the Volt (SE) (P1) instruction.

Dataloggers that use Edlog include the CR500, CR510, CR10(X), 21X,

CR23X, and CR7.

5.1 Wind Speed Multiplier and Offset

The expression for wind speed (U) is:

U = MX + B

Where,

M = multiplier

X = voltage measured by the datalogger

B = offset

Table 5-1 lists the multipliers to obtain miles/hour, meters/second, km/H, and

knots. The helicoid propeller has a calibration that passes through zero, so the

offset is zero.

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