Young 09101 User Manual

METEOROLOGICAL INSTRUMENTS

INSTRUCTIONS

WIND MONITOR - SE

MODEL 09101

R.M. YOUNG COMPANY 2801 AERO PARK DRIVE, TRAVERSE CITY, MICHIGAN 49686, USA

TEL: [phone] FAX: [phone] WEB: www.youngusa.com

P/N: 09101-90

REV: G031214

MODEL 09101

WIND MONITOR - SE

INTRODUCTION

The Wind Monitor-SE combines the performance and durability of the
standard Wind Monitor with an optically encoded direction transducer
and serial data output capability.

The wind speed sensor is a four blade helicoid propeller that turns a
multipole magnet. Propeller rotation induces a variable frequency signal
in a stationary coil. Slip rings and brushes are not used.

The wind direction sensor is a durable molded vane. An optical encoder
measures vane angle, thereby eliminating the characteristic deadband
and wear of potentiometer transducers. The encoder is an absolute type
so direction output remains accurate even if power is interrupted.

Raw transducer signals are processed by onboard electronics. A variety
of serial protocols or a conventional calibrated voltage output may be
selected with simple internal jumpers.

The Wind Monitor-SE is designed for superior environmental resistance.
Housing parts are UV stabilized thermoplastic. Fittings are stainless
steel and anodized aluminum. Precision grade stainless steel ball
bearings are used throughout. The instrument mounts on standard 1
inch pipe.

WIND SPEED SPECIFICATION SUMMARY

Range 0 to 100 m/s (224 mph)

Resolution: 0.1 unit

Accuracy: ±0.3 m/s (0.6 mph) or 1% of reading

Threshold: 1.0 m/s (2.2 mph)

Distance constant: 2.7 m (8.9 ft)

Transducer: Rotating magnet and stationary coil.

WIND DIRECTION (AZIMUTH) SPECIFICATION SUMMARY

Range: 0-360 degrees

Accuracy: ± 2 degrees

Resolution: 1 degree

Threshold: 1.1 m/s (2.5 mph) @ 10° displacement

Delay distance: 1.3 m (4.3 ft)

Damping ratio: 0.3

Transducer: Absolute encoder

GENERAL

Power requirement: 11-24 VDC, 20 mA

Dimensions: Overall height 37 cm
Overall length 55 cm
Propeller 18 cm diameter
Mounting 34 mm (1.34 in) diameter

(standard 1 inch pipe)

Weight: Sensor weight 1.0 kg (2.2 lb)
Shipping weight 2.3 kg (5.0 lb)

Voltage Output: WS: 0-5 VDC for 0-100 m/s
WD: 0-5 VDC for 0-540°

Serial RS-485: 2 wire-half duplex, 1200-9600 Baud

RMY, NCAR, NMEA, or RMYT protocols
Polled or continuous

Operating Temperature: -50 to 50°C (-58 to 122°F)

INITIAL CHECKOUT

Remove the sensor from its shipping carton. Remove the plastic nut
from the propeller shaft and install the propeller with the teeth on the
propeller hub engaging the slots on the shaft hub. Tighten plastic
propeller nut nger-tight only. Do not overtighten.

The instrument is fully balanced, aligned, and calibrated before
shipment. Some simple checks can be made to verify proper function.
Both vane and propeller should rotate easily without friction. Check
vane balance by holding sensor with vane surface horizontal. The vane
should have no tendency to rotate. A slight imbalance will not degrade
performance.

INITIAL SETUP

The 09101 has been calibrated at the factory and requires no additional
adjustments. Operation is congured by onboard jumpers and software
commands.

Unless otherwise specied, the sensor is supplied with the following
settings:

Continuous Serial Output
RMY Protocol
9600 Baud
Meters per Second

Other settings are easily selected by changing the jumper pattern.

Refer to the wiring diagram for jumper J1 and J3 locations. The

following table lists available features and position of each jumper.

Important Note:
Jumper settings are read at power-up only. If jumpers are changed,
remove and reapply power for the new settings to be used.

At rst power-up the Wind Monitor-SE has a 3 second delay before
outputting the rst wind speed value.

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Jumper setting summary:

NCAR PROTOCOL

DESCRIPTION J1 POSITION

Continuous serial output 1 IN
Polled serial output 1 OUT

RMY protocol 2 IN 3 IN
NCAR protocol 2 IN 3 OUT
NMEA protocol 2 OUT 3 IN
RMYT protocol 2 OUT 3 OUT

1200 baud 4 IN 5 IN
2400 baud 4 IN 5 OUT
4800 baud 4 OUT 5 IN
9600 baud 4 OUT 5 OUT

Knots 6 IN 7 IN
Miles per hour 6 IN 7 OUT
Kilometers per hour 6 OUT 7 IN
Meters per second 6 OUT 7 OUT

DESCRIPTION J3 POSITION

Calibrated 0-5 VDC output LEFT
Serial RS-485 output RIGHT

See wiring diagram for J1 and J3 locations.

SERIAL PROTOCOLS

Details of the various operating modes are described in the following
paragraphs.

Important Note:
When the RS-485 bus is used for both sending data and receiving
commands, the connected device must be capable of properly
managing this type of half-duplex communication. If the Wind
Monitor-SE receives a command that will result in sending a
response, it will wait 25 mS for the device which issued the
command to return to receive mode. When not sending data, the
Wind Monitor-SE stays in receive mode.

RMY PROTOCOL

RMY protocol is a simple scheme suitable for use with the Young Model
26700 Translator and many dataloggers.

RMY protocol may be used with either single Wind Monitor-SE sensors
(polled or continuous output) or multiple sensors on a shared bus
operating in polled mode.

The default output rate is once per second. Data output format is:

aa ddd sss.s<CR/LF>

“aa” is the 09101 address, (0 -15)
“ddd” is direction in degrees
“sss.s” is speed in units set by jumper J1.

In polled mode, there are two commands:

Ma! “a” is the 09101 address in hex, 0-F.
This command requests the latest reading.

ADa! “a” is the new 09101 address in hex, 0-F.
This command sets the 09101 address.

NCAR protocol uses a subset of the NCAR PAM III protocol. For full
details on the PAM III protocol, contact:

NCAR - Atmospheric Technology Division
P.O. Box 3000
Boulder, Colorado 80307-3000

Two modes of operation are available: bussed and interactive. Bussed
mode is the normal operating mode and requires a full address/
command/checksum sentence for sending commands. Interactive
mode omits the address and checksum requirements and is intended
primarily for benchtop use.

When NCAR protocol is set via jumper J1, the 09101 defaults to bussed
mode when powered up. A sequence of three ESC codes (ASCII 27)
toggles the 09101 between bussed and interactive mode. The three
ESC codes must occur within 2 seconds.

In bussed mode, the data output format is:

&aaW: sss.s dddc<EOT>

“aa” is the 09101 address in hex, 00-FF
“sss.s” is speed
“ddd” is direction in degrees
“c” is a single character pseudo-checksum
<EOT> is the ASCII end-of-transmission character (ASCII 4).

In interactive mode, the data output format is:

&aaW: sss.s ddd<CR/LF>

“aa” is the 09101 address in hex, 00-FF
“sss.s” is speed
“ddd” is direction in degrees
<CR/LF> is the carriage return/line feed pair (ASCII 13 and 10).

Wind speed units are set by jumper J1. The zero reference direction is
preset but may be reset to a new position using the ZN command.

Commands in bussed mode use the following general format:

#aa[...]c<EOT>

“aa” is the 09101 address in hex, 00-FF
[...] is the command (see below)
“c” is a single character pseudo-checksum
<EOT> is the ASCII end-of-transmission character (ASCII 4).

Commands in interactive mode use this format:

[...]<CR>

[...] is the command
<CR> is a carriage return (ASCII 13).

When operating in continuous output mode, the 09101 will still receive
commands. However, because of the half-duplex serial bus, commands
must be issued between data output transmissions. If commands arrive
while the 09101 is transmitting, data may be garbled by the collision.
In polled mode, collisions are unlikely since the 09101 responds only
when commanded.

Response to commands varies depending on the command and
whether the 09101 is in bussed or interactive mode.

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In bussed mode, commands without the “#” prex or proper address
are ignored. Properly addressed but otherwise invalid commands are
responded to as follows:
&aaNUc<EOT> Undened command
&aaNCc<EOT> Bad checksum
&aaNOc<EOT> Other error

Where “aa” is the 09101 address in hex, 00-FF; “c” is a single character
pseudo-checksum; and <EOT> is the end-of-transmission character
(ASCII 4).

In interactive mode, invalid commands produce this response:

VOLTAGE OUTPUTS

Voltage output mode is selected with jumper J3 in the left position.
Jumper J1 must be set for RMY, NCAR, or NMEA protocol. Wind
direction voltage output calibration is 0-5 VDC for 0-540° range. Wind
speed voltage output is 0-5 VDC for 0-100 meters per second.

In applications where long connection cables or small wire gauge is
used, measure the 09101 voltage outputs differentially to overcome
error-inducing voltage drops in the cable or consider using the serial
RS-485 signal which is more tolerant of this effect.

NAK<CR/LF>

NCAR PAM III (SUBSET) COMMAND SUMMARY

Upper and lower case text must be observed with these commands.

CMD DESCRIPTION RESPONSE

BDddd Boom direction offset none
"ddd" is degrees
CD Continuous output, overrides J1 data
FC Use calibrated speed units &aaFC
FR Use raw speed pulse count &aaFR
MR Manual reset reset
OD Output data data
OS Output status status
PH Print help (abbreviated command list) command list
PM Polled mode, overrides J1 none
PO Print operating parameters parameter list
SAaa Set address, “aa” is new hex address &aa
ZN Set zero direction reference none
calib Enter calibrate mode* none
ratexx Set serial output rate none
"xx" is the delay between each output
in continuous mode. Delay equals the
xx value times 32.77 mS. Examples:
rate02 is about 16/second
rate30 is about once per second
propxxx Set prop pitch none
"xxx" is prop pitch in mm/rev
Example:
Use prop294 for model 08234 propeller,

29.4 cm/rev pitch

NMEA PROTOCOL

Generally used for marine applications, this protocol produces a
standard NMEA output sentence for wind speed and direction at 4800
baud. The sentence is as follows:

$WIMWV,ddd,R,sss.s,U,A*hh<CR/LF>

“ddd” is wind direction in degrees.
“sss.s” is wind speed.
"U" is wind speed units. N = knots, K = km/h, M = m/s, S = mph
"A" is Status
"*hh" is the hex checksum value of output string

This mode may be used for sending NMEA data to the YOUNG Model
06206 Marine Wind Tracker.

RMYT PROTOCOL

This is a protocol for sending serial wind data directly to a YOUNG
Model 06201 Wind Tracker. The output is a special binary format sent
16 times per second at 9600 baud.

INSTALLATION

Proper placement of the instrument is very important. Eddies from trees,
buildings, or other structures can greatly inuence wind speed and wind
direction observations. To get meaningful data, locate the instrument
well away from obstructions. As a general rule, the air ow 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.

FAILURE TO PROPERLY GROUND THE WIND MONITOR-SE

MAY RESULT IN ERRONEOUS SIGNALS

OR DAMAGE TO THE UNIT.

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 cause erroneous signals or transducer failure. To direct
the discharge away from the transducers, it is very important that the
sensor be connected to a good earth ground. Inside the junction box
connect the terminal labeled EARTH to a good earth ground.

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
following these steps:

1. MOUNT WIND MONITOR
a) Place orientation ring on mounting post. Do Not tighten band

clamp yet.

b) Place Wind Monitor on mounting post. Do Not tighten band clamp

yet.

2. CONNECT SENSOR CABLE
a) Remove junction box cover.
b) Route cable thru strain relief opening at bottom of junction box.

Secure cable by tightening packing nut.

c) Connect sensor cable to terminals. See wiring diagram. Terminals

A and B are used for either serial (RS-485) or voltage outputs
depending on the position of jumper J3. Use a small screwdriver
to make connections. Be sure to securely tighten each terminal.

d) Replace junction box cover.

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.

*Max set screw torque 80 oz-in

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