05108 Manual

05108 Manual
METEOROLOGICAL INSTRUMENTS
INSTRUCTIONS
WIND MONITOR-HD
MODEL 05108
R.M. YOUNG COMPANY
2801 AERO PARK DRIVE, TRAVERSE CITY, MICHIGAN 49686, USA
TEL: (231) 946-3980
FAX: (231) 946-4772
WEB: www.youngusa.com
PN: 05108-90
REV: A060112
INTRODUCTION
MODEL 05108
WIND MONITOR-HD
The reliability of the wind monitor sensor is well known. The
sensitive vane and propeller combination has proven effective for
countless applications in many disciplines.
The Wind Monitor-HD (Heavy Duty) model is designed to address
the most common concerns of mechanical wind speed and
direction sensors: bearing replacement. The HD utilizes extremely
long-wearing, oversize ceramic bearings to increase service life
of standard stainless steel bearings. In addition to being more
wear resistant, ceramic is resistant to corrosion in the most hostile
environments.
The Wind Monitor-HD also has an oversized propeller shaft , high
pitch propeller, and a locking propeller nut. The main housing,
nose cone, propeller, and other internal parts are injection molded
U.V. Stabilized plastic. Both the propeller and vertical shafts use
ceramic ball bearings. Bearings have light contacting teflon seals
and are filled with a low torque wide temperature range grease to
help exclude contamination and moisture.
Propeller rotation produces an AC sine wave signal with frequency
proportional to wind speed. This AC signal is induced in a
stationary coil by a six pole magnet mounted on the propeller shaft.
Three complete sine wave cycles are produced for each propeller
revolution.
WIND SPEED SPECIFICATION SUMMARY:
Range
Sensor
Pitch
Distance Constant
Threshold Sensitivity
Transducer
Transducer Output
Output Frequency
0 to 100 m/s (224 mph)
18 cm diameter 4-blade helicoid propeller
50.0 cm air passage per revolution
2.7 m (8.9 ft.) for 63% recovery
1.0 m/s (2.2 mph)
Centrally mounted stationary coil,
2K 0hm nominal DC resistance
AC sine wave signal induced by rotating
magnet on propeller shaft. 80 mV p-p at
100 rpm. 8.0 V p-p at 10,000 rpm.
3 cycles per propeller revolution
(0.166 m/s per Hz)
WIND DIRECTION (AZIMUTH) SPECIFICATION SUMMARY:
Range
Sensor
Damping Ratio
Delay Distance
Threshold Sensitivity
Damped Natural
Wavelength
Undamped Natural
Wavelength
Transducer
Transducer Excitation
Requirement
Transducer Output
360° mechanical, 355° electrical (5° open)
Balanced vane, 38 cm (15 in) turning radius.
0.25
1.3 m (4.3 ft) for 50% recovery
1.0 m/s (2.2 mph) at 10° displacement
7.4 m (24.3 ft)
7.2 m (23.6 ft)
Precision conductive plastic potentiometer, 10K
ohm resistance (±20%), 0.25% linearity, life
expectancy 50 million revolutions, rated 1 watt
at 40° C, 0 watts at 125° C
Regulated DC voltage, 15 VDC max
Analog DC voltage proportional to azimuth angle
with regulated excitation voltage applied across
potentiometer.
GENERAL:
Operating Temp:
-50 to 50°C (-58 to 122°F)
Vane position is transmitted by a 10K ohm precision conductive
plastic potentiometer which requires a regulated excitation voltage.
With a constant voltage applied to the potentiometer, the output
signal is an analog voltage directly proportional to azimuth angle.
The instrument mounts on standard one inch pipe, outside
diameter 34 mm (1.34"). An orientation ring is provided so the
instrument can be removed for maintenance and reinstalled without
loss of wind direction reference. Both mounting post assembly and
orientation ring are secured to the mounting pipe by stainless steel
band clamps. A 3 meter (9.8 ft) pigtail cable assembly is supplied
for electrical connections. For longer cable lengths a user supplied
junction box or connector may be used. A variety of devices are
available for signal conditioning, display, and recording of wind
speed and direction.
INITIAL CHECKOUT
When the Wind Monitor-HD is unpacked it should be checked
carefully for any signs of shipping damage. Remove the nut on
the propeller shaft. Install the propeller on the shaft so the letter
markings on the propeller face forward (into the wind). Engage the
propeller into the molded ribs on the propeller shaft hub. The nut
should be fully tightened with supplied wrench. The instrument is
aligned, balanced and fully calibrated before shipment, however
it should be checked both mechanically and electrically before
installation. The vane and propeller should easily rotate 360°
without friction. Check vane balance by holding the instrument
base so the vane surface is horizontal. It should have near neutral
torque without any particular tendency to rotate. A slight imbalance
will not degrade performance.
The potentiometer requires a stable DC excitation voltage. Do
not exceed 15 volts. When the potentiometer wiper is in the 5°
dead band region, the output signal is "floating" and may show
varying or unpredictable values. To prevent false readings, signal
conditioning electronics should clamp the signal to excitation or
reference level when this occurs. Avoid a short circuit between
the azimuth signal line and either the excitation or reference lines.
Although there is a 1K ohm current limiting resistor in series with
the wiper for protection, damage to the potentiometer may occur if
a short circuit condition exists.
05108-90(A)
Page 1
Before installation, connect the instrument to an indicator as shown
in the wiring diagram and check for proper wind speed and azimuth
values. Position the vane over a sheet of paper with 30° or 45°
cross markings to check vane alignment. To check wind speed,
temporarily remove the propeller and connect the shaft to an
Anemometer Drive. Details appear in the CALIBRATION section of
this manual.
INSTALLATION
Proper placement of the instrument is very important. Eddies from
trees, buildings, or other structures can greatly influence wind
speed and wind direction observations. To get meaningful data for
most applications locate the instrument well above or upwind from
obstructions. As a general rule, the air flow around a structure is
disturbed to twice the height of the structure upwind, six times the
height downwind, and up to twice the height of the structure above
ground. For some applications it may not be practical or necessary
to meet these requirements.
FAILURE TO PROPERLY GROUND THE WIND
MONITOR-MA MAY RESULT IN ERRONEOUS SIGNALS
OR TRANSDUCER DAMAGE.
Grounding the Wind Monitor is vitally important. Without proper
grounding, static electrical charge can build up during certain
atmospheric conditions and discharge through the transducers.
This discharge can potentially cause erroneous signals or
transducer failure. To direct the discharge away from the
transducers, the mounting post assembly in which the transducers
are mounted is made with a special antistatic plastic. The Wind
Monitor should be mounted on a metal pipe which is connected to
earth ground. The mounting pipe should not be painted where the
Wind Monitor is mounted. Towers or masts set in concrete should
be connected to one or more grounding rods.
If it is difficult to ground the mounting post in this manner, the
following method should be used. The sensor cable shield wire
is internally connected to the antistatic mounting post. This shield
wire should be connected to an earth ground. (Refer to wiring
diagram)
Initial installation is most easily done with two people; one to adjust
the instrument position and the other to observe the indicating
device. After initial installation, the instrument can be removed
and returned to its mounting without realigning the vane since the
orientation ring preserves the wind direction reference. Install the
Wind Monitor-MA following these steps:
1. MOUNT WIND MONITOR-HD
a) Place orientation ring on mounting post. Do Not tighten band clamp yet.
b) Place Wind Monitor-HD on mounting post. Do Not tighten band clamp yet.
CALIBRATION
The Wind Monitor-HD is fully calibrated before shipment and
should require no adjustments. Recalibration may be necessary
after some maintenance operations. Periodic calibration checks
are desirable and may be necessary where the instrument is used
in programs which require auditing of sensor performance.
Accurate wind direction calibration requires a Model 18112 Vane
Angle Bench Stand. Begin by connecting the instrument to a
signal conditioning circuit which has some method of indicating
azimuth value. This may be a display which shows azimuth values
in angular degrees or simply a voltmeter monitoring the output.
Orient the base with the junction box at 180°. Visually align the
vane with the crossmarkings and observe the indicator output. If
the vane position and indicator do not agree within 5°, adjust the
potentiometer coupling inside the main housing. Details for making
this adjustment appear in the MAINTENANCE, potentiometer
replacement outline, step 7. It is important to note that while full
scale azimuth on signal conditioning electronics may be 360°,
full scale azimuth signal from the instrument is 355°. The signal
conditioning electronics must be adjusted accordingly. For
example, in a circuit where 0 to 1.000 VDC represents 0° to 360°,
the output must be adjusted for 0.986 VDC when the instrument is
at 355°. (355°/360° X 1.000 volts = 0.986 volts)
Wind speed calibration is determined by propeller pitch and the
output characteristics of the transducer. Calibration formulas
showing wind speed vs. propeller rpm and output frequency are
included below. Standard accuracy is ± 0.3 m/s (0.6mph). For
greater accuracy, the device must be individually calibrated in
comparison with a wind speed standard. Contact the factory or
your supplier to schedule a NIST (National Institute of Standards &
Technology) traceable wind tunnel calibration in our factory.
To calibrate wind system electronics using a signal from the
instrument, temporarily remove the propeller and connect an
Anemometer Drive (18802 or equiv.) to the propeller shaft. Apply
the appropriate calibration formula to the calibrating motor rpm and
adjust the electronics for the proper value. For example, with the
propeller shaft turning at 3600 rpm adjust an indicator to display
30.0 meters per second (3600 rpm X 0.00833 m/s/rpm =30.0 m/s).
CALIBRATION FORMULAS
Model 05108 Wind Monitor-MA w / 08214 Propeller
WIND SPEED
m/s
knots
mph
km/h
vs PROPELLER RPM
=
0.00833 x rpm
=
0.01619 x rpm
=
0.01863 x rpm
=
0.02999 x rpm
WIND SPEED vs OUTPUT FREQUENCY
m/s
=
0.1666 x Hz
knots
=
0.3238 x Hz
mph
=
0.3726 x Hz
km/h
=
0.5998 x Hz
2. CONNECT SENSOR CABLE
a) Route cable carefully to avoid strain.
b) Use of a waterproof connector or junction box is
recommended.
3. ALIGN VANE
a) Connect instrument to an indicator.
b) Choose a known wind direction reference point on the horizon.
c) Sighting down instrument centerline, point nose cone at reference point on horizon.
d) While holding vane in position, slowly turn base until indicator shows proper value.
e) Tighten mounting post band clamp.
f) Engage orientation ring indexing pin in notch at instrument
base.
g) Tighten orientation ring band clamp.
MAINTENANCE
Given proper care, the Wind Monitor-HD should provide years
of service. The only components likely to need replacement
due to normal wear are the precision ball bearings and the wind
direction potentiometer. Only a qualified instrument technician
should perform the replacement. If service facilities are not
available, return the instrument to the company. Refer to the
drawings to become familiar with part names and locations. The
asterisk* which appears in the following outlines is a reminder that
maximum torque on all set screws is 80 oz-in.
05108-90(A)
Page 2
POTENTIOMETER REPLACEMENT:
The potentiometer has a life expectancy of fifty million revolutions.
As it becomes worn, the element may begin to produce noisy
signals or become nonlinear. When signal noise or non-linearity
becomes unacceptable, replace the potentiometer. Refer to
exploded view drawing and proceed as follows:
1. REMOVE MAIN HOUSING
a)Unscrew nose cone from main housing. Set o-ring aside for
later use.
b)Remove 4 screws attaching housing.
c) Gently push main housing latch.
d)While pushing latch, lift main housing up and remove It from
vertical shaft bearing rotor.
2. UNSOLDER TRANSDUCER WIRES
a)Remove screws securing cable and strain relief assembly to
mounting post.
b)Slowly pull strain relief away from mounting post exposing
circuit board with transducer wire connections.
3. REMOVE POTENTIOMETER
a)Loosen set screw on potentiometer coupling and remove it
from potentiometer adjust thumbwheel.
b)Loosen set screw on potentiometer adjust thumbwheel
and remove it from potentiometer shaft.
c)Loosen two set screws at base of transducer assembly
and remove assembly from vertical shaft.
d)Unscrew potentiometer housing from potentiometer
mounting & coil assembly.
e)Push potentiometer out of potentiometer mounting &
coil assembly by applying firm but gentle pressure on
potentiometer shaft. Make sure that the shaft o-ring
comes out with the potentiometer. If not, then gently push
it out from the top of the coil assembly.
4. INSTALL NEW POTENTIOMETER
a)Push new potentiometer into potentiometer mounting & coil
assembly making sure o-ring is on shaft.
b)Feed potentiometer and coil wires through hole in bottom
of potentiometer housing.
c)Screw potentiometer housing onto potentiometer
mounting & coil assembly.
d)Gently pull transducer wires through bottom of
potentiometer housing to take up any slack. Apply a small
amount of silicone sealant around hole.
e)Install transducer assembly on vertical shaft allowing 0.5
mm (0.020") clearance from vertical bearing. Tighten set
screws* at bottom of transducer assembly.
f) Place potentiometer adjust thumbwheel on potentiometer
shaft and tighten set screw*.
g)Place potentiometer coupling on potentiometer adjust
thumbwheel. Do Not tighten set screw yet.
5. RECONNECT TRANSDUCER WIRES
a)Using needle-nose pliers or a paper clip bent to form a small
hook, gently pull transducer wires through hole in mounting
post.
b)Solder wires to cable assembly. Apply small amount of
silicone sealant to solder connections. Observe color code.
c) Secure cable & strain relief assembly removed in step 2A.
6. REPLACE MAIN HOUSING
a)Place main housing over vertical shaft bearing rotor. Be
careful to align indexing key and channel in these two
assemblies.
b)Place main housing over vertical shaft bearing rotor until
potentiometer coupling is near top of main housing.
c) Turn potentiometer adjust thumbwheel until potentiometer
coupling is oriented to engage ridge in top of main housing.
Set screw on potentiometer coupling should be facing the
front opening.
d)With potentiometer coupling properly oriented, continue
pushing main housing onto vertical shaft bearing rotor until
main housing latch locks into position with a “click”.
e)Replace 4 screws.
7. ALIGN VANE
a)Connect excitation voltage and signal conditioning electronics
to terminal strip according to wiring diagram.
b)With mounting post held in position so junction box is facing
due south, orient vane to a known angular reference. Details
appear in CALIBRATION section.
c) Reach in through front of main housing and turn potentiometer
adjust thumbwheel until signal conditioning system indicates
proper value.
d)Tighten set screw* on potentiometer coupling.
8. REPLACE NOSE CONE
a)Screw nose cone into main housing until o-ring seal is seated.
Be certain threads are properly engaged to avoid crossthreading.
FLANGE BEARING REPLACEMENT:
If anemometer bearings become noisy or wind speed threshold
increases above an acceptable level, bearings may need
replacement. Check anemometer bearing condition using a Model
18310 Propeller Torque Disc. Without it, a rough check can be
performed by adding an ordinary paper clip (0.5 gm) to the tip of
a propeller blade. Turn the blade with the paper clip to the "three
o'clock" or "nine o'clock" position and gently release it. Failure to
rotate due to the weight of the paper clip indicates anemometer
bearings need replacement. Repeat this test at different positions
to check full bearing rotation. If needed, bearings are replaced as
follows.
1. REMOVE OLD BEARINGS
a) Unscrew nose cone. Do not lose o-ring seal.
b) Loosen set screw on magnet shaft collar and remove
magnet.
c) Slide propeller shaft out of nose cone assembly.
d) Remove front bearing cap which covers front bearing.
e) Remove both front and rear bearings from nose cone assembly. Insert edge of a pocket knife under bearing flange
and lift it out.
2. INSTALL NEW BEARINGS
a) Insert new front and rear bearings into nose cone.
b) Replace front bearing cap.
c) Carefully slide propeller shaft through bearings.
d) Place magnet on propeller shaft allowing 0.5 mm (0.020")
clearance from rear bearing.
e) Tighten set screw* on magnet shaft collar.
f) Screw nose cone into main housing until o-ring seal is seated. Be certain threads are properly engaged to avoid
cross-threading.
*Max set screw torque 80 oz-in
05108-90(A)
Page 3
VERTICAL SHAFT BEARING REPLACEMENT:
WARRANTY
Vertical shaft bearings are much larger than the anemometer
bearings. Ordinarily, these bearings will require replacement less
frequently than anemometer bearings. Check bearing condition
using a Model 18331 Vane Torque Gauge. Without it, a rough
check can be performed by holding the instrument with the vane
horizontal and placing a 3 gm weight near the aft edge of the fin.
A U.S. penny weighs about 3 gm and is convenient for this check.
Failure to rotate downward indicates the vertical bearings need
replacement. Repeat this test at different positions to check full
bearing rotation.
This product is warranted to be free of defects in materials and
construction for a period of 12 months from date of initial purchase.
Liability is limited to repair or replacement of defective item. A copy
of the warranty policy may be obtained from R. M. Young Company.
CE COMPLIANCE
This product has been tested and shown to comply with European
CE requirements for the EMC Directive. Please note that shielded
cable must be used.
Since this procedure is similar to POTENTIOMETER
REPLACEMENT, only the major steps are listed here.
1. REMOVE MAIN HOUSING
2. UNSOLDER TRANSDUCER WIRES AND REMOVE TRANSDUCER ASSEMBLY
Loosen set screws at base of transducer assembly and
remove entire assembly from vertical shaft.
3. REMOVE VERTICAL SHAFT BEARING ROTOR by sliding it
upward off vertical shaft.
4. REMOVE OLD VERTICAL BEARINGS AND INSTALL NEW BEARINGS. When inserting new bearings, be careful not to
apply pressure to bearing shields.
5. REPLACE VERTICAL SHAFT BEARING ROTOR.
6. REPLACE TRANSDUCER & RECONNECT WIRES
7. REPLACE MAIN HOUSING
8. ALIGN VANE
9. REPLACE NOSE CONE
Declaration of Conformity
R. M. Young Company
2801 Aero Park Drive
Traverse City, MI 49686 USA
Model 05108 Wind Monitor - HD
The undersigned hereby declares on behalf of R. M.
Young Company that the above-referenced product, to
which this declaration relates, is in conformity with the
provisions of:
Council Directive 2004/108/EC (December 15, 2004)
on Electromagnetic Compatibility
David Poinsett
R&D Manager
05108-90(A)
Page 4
CABLE & WIRING DIAGRAM
05108-90(A)
Page 5
BEARING REPLACEMENT & POTENTIOMETER ADJUSTMENT
05108-90(A)
Page 6
 
GENERAL
ASSEMBLY & REPLACEMENT PARTS






05194 PROPELLER NUT WRENCH
08214
PROPELLER - 18cm x 50cm (BLACK PP)
05186 CERAMIC FLANGE BEARING (2)
05188 NOSE CONE ASSY - HD
05158 NOSE CONE O-RING
05185 6-POLE MAGNET &
SHAFT COLLAR - HD
05154HD
MAIN HOUSING AND
TAIL ASSY - MA
00321-0607P (4)
6-32 x 7/16 PAN HD MACH SCR
05138A
POTENTIOMETER COUPLING
05139
POT ADJUST THUMBWHEEL
05130D TRANSDUCER ASSEMBLY
05145C POTENTIOMETER MOUNTING
& COIL ASSEMBLY
05187 HD PROPELLER NUT
1/4-20
05134 POTENTIOMETER 10K
1/4% LIN, CONDUCTIVE PLASTIC
(WITH O-RING)
05184 HD PROPELLER
SHAFT W/HUB
05131D POTENTIOMETER HOUSING
6-32 x 1/8 SET SCREW (5)
05140
VERTICAL SHAFT BEARING
05127 MAIN HOUSING LATCH
6-32 x 3/8 FLAT HD SCREW
05136 VERTICAL SHAFT
BEARING ROTOR
05123A-01 MA MOUNTING POST
05123A-03 CABLE, 3M (9.8 FT)
WITH STRAIN RELIEF ASSY
00320-0600PA (6)
SHT MTL SCR #6 x 3/8"
05129
BAND CLAMP
05128B
ORIENTATION RING
05108-90(A)
R. M. YOUNG COMPANY 2801 Aero Park Drive , Traverse City, Michigan 49686 U.S.A.
TEL (231) 946-3980
FAX (231) 946-4772
Page 7
Calibration Accessories
Model 18802
Anemometer Drive
Model 18112
Vane Angle Bench Stand
Model 18331 Vane Torque Gauge
Model 18212
Vane Angle Fixture-Tower Mount
Model 18310
Propeller Torque Disc
Model 18301
Vane Alignment Rod
YOUNG
Calibration Accessories
Model 18802 Anemometer Drive provides a convenient and accurate way to rotate an anemometer shaft at
a known rate. The motor may be set to rotate clockwise or counter-clockwise at any rate between 200 and
15,000 RPM in 100 RPM increments. The LCD display is referenced to an accurate and stable quartz timebase.
For completely portable operation, the unit can be operated on internal batteries. For extended operation, an
AC wall adapter is included.
Model 18811 Anemometer Drive is identical to Model 18802 except the drive motor incorporates a
gear reducer for operation in the range of 20 to 990 RPM in 10 RPM increments. The lower range
is recommended for cup anemometer calibration.
Model 18112 Vane Angle Bench Stand is used for benchtop wind direction calibration of the Wind Monitor
family of sensors. The mounting post engages the direction orientation notch on the Wind Monitor. An easy to
read pointer indicates 0 to 360 degrees with 1/2 degree resolution.
Model 18212 Vane Angle Fixture - Tower Mount similar to the Model 18112, the tower mount feature allows use
on the tower as well as the bench top. The fixture is temporarily placed on the tower between the Wind Monitor
and its tower mounting. Index keys and notches are engaged to preserve direction reference.
Model 18310 Propeller Torque Disc checks anemometer bearing torque with 0.1 gm/cm resolution. The disc temporarily replaces the propeller for torque measurement or simple yet accurate pass/fail
checks. Charts included with the unit relate torque to propeller threshold with limits for acceptable
bearing performance.
Model 18312 Cup-Wheel Torque Disc checks cup anemometer bearing torque.
Specifications
MODEL 18802 ANEMOMETER DRIVE
(Replaces 18801)
Range:
200 to 15,000 RPM in 100 RPM increments
Rotation:
Clockwise or Counter-Clockwise
Display Resolution:
1 RPM
Quartz Timebase Reference:
0.1 RPM
Power Requirement:
2x9 V (alkaline or lithium) batteries
115 VAC wall adapter included
(230 VAC – add suffix H)
MODEL 18811 ANEMOMETER DRIVE
(Replaces 18810)
Range:
20 to 990 RPM in 10 RPM increments
Display Resolution:
0.1 RPM
Model 18331 Vane Torque Gauge checks vane bearing torque of the Wind Monitor family sensors. Slip the
fixture over the main housing and make simple yet accurate vane torque measurements. Charts relating vane
torque to vane threshold provide limits for acceptable bearing performance.
Model 18301 Vane Alignment Rod helps align the vane of a wind sensor to a known direction reference during
installation. The base of the device has an index key that engages the direction orientation notch in the sensor
allowing the sensor to be removed without losing wind direction reference.
MODEL 18112, 18212 VANE ANGLE
CALIBRATION DEVICES
Range:
0 to 360 degrees
Resolution:
0.5 degree
MODEL 18310, 18312 TORQUE DISC DEVICES
Range:
0 to 5.4 gm-cm
Ordering Information
MODEL
Resolution:
0.1 gm-cm
ANEMOMETER DRIVE 200 to 15,000 RPM .............................................. 18802
ANEMOMETER DRIVE 20 TO 990 RPM .................................................. 18811
230V / 50-60 HZ INPUT POWER ................................................... ADD SUFFIX “H”
VANE ANGLE BENCH STAND .......................................................... 18112
VANE ANGLE FIXTURE - TOWER MOUNT ...........................................
PROPELLER TORQUE DISC............................................................
CUP-WHEEL TORQUE DISC ...........................................................
VANE TORQUE GAUGE .................................................................
VANE ALIGNMENT ROD ................................................................
18212
18310
18312
18331
18301
MODEL 18331 VANE TORQUE GAUGE
Range:
0 to 50 gm-cm
Resolution:
5 gm-cm
Specifications subject to change without notice.
Copyright © 2000 R.M. Young Company, Printed in U.S.A. 11/00
R.M. YOUNG COMPANY
2801 Aero Park Drive
Traverse City, Michigan 49686 USA
TEL: (231) 946-3980 FAX: (231) 946-4772
E-mail: met.sales@youngusa.com
Web Site: www.youngusa.com
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