Delta OHM HD2003 User manual



Operating manual
3-axis ultrasonic anemometers
HD2003 – HD2003.1
www.deltaohm.com
English
Keep for future reference.
Companies / Brands of GHM

HD2003 - 2 - V4.1
INDEX
1. Introduction
1.1. Conventions
1.2. Models
1.2.1. Heaters Option
1.2.2. RS422 Option
1.3. Features
1.4. Operating Modes
1.5. Specifications
1.6. (HD2003 Model) Pressure - Temperature – Relative Humidity Sensors
2. Installation and Maintenance
2.1. Packaging
2.2. Mounting and Positioning
2.3. Alignment
2.4. Electrical Connections
2.4.1. Power Supply and Earthing
2.4.2. RS232 Serial Communication Mode
2.4.3. RS422 Serial Communication Mode
2.4.4. RS485 ModBus RTU and Multidrop Communication Mode
2.4.5. Analog Output Mode
2.4.6. Analog Output Extended Mode AoXnd
2.5. Maintenance
3. Programming
3.1. Introduction
3.2. RS232 and RS422 Serial Communication Mode
3.2.1. Parameter Setup
3.2.2. Measuring mode
3.2.2.1. RS232 Serial Mode Examples
3.2.3. Setup
3.2.3.1. Baud rate
3.2.3.2. Gain
3.2.3.3. Minimum Threshold
3.2.3.4. Average Interval
3.2.3.5. Analog Output Format
3.2.3.6. Output Quantities
3.2.3.7. Unit of Measurement
3.2.3.8. Sonic Transducer Heating
3.2.3.9. RS232, RS422, RS485 and AoXnd Communication Mode
3.2.3.10. Identicode
3.2.3.11. Output Rate and Digital-Analog High Frequency
3.2.4. Logging
3.3. RS485 Multidrop and RS485 ModBus RTU Communication Mode
3.3.1. RS485 Multidrop Parameter Setup
3.3.2. HD2003 Communication Protocol
3.3.2.1. S Command (Setup)
3.3.2.2. M Command (Output Data)
3.3.2.3. H Command (Digital High Frequency enable)
L Command (Digital High Frequency disable)
3.3.3. RS485 ModBus RTU Parameter Setup
3.4. Analog Output Mode
3.4.1. Analog Output Mode Examples
3.5. Analog Output Extended Mode (AoXnd)
3.5.1. Setting ICP DAS I-7024® module
3.5.2. Setting HD2003
3.5.3. Analog Output Extended Mode Examples
4. How to Order
4.1. Order codes

HD2003 - 3 - V4.1
1. INTRODUCTION
Ultrasonic Anemometers allow detecting surface wind speed and direction.
These instruments measure the transit time of the ultrasonic pulse between a pair of opposite
sonic transducers, in both directions. From the measurement of tA and tR times, you can trace
to the wind speed component in the direction of the two transducers, through the formula:
V = D/2 · (1/tA – 1/tR)
Where:
D = distance between two transducers. tA = forward transit time tR = backward transit time
This formula ensures that the wind speed does not depend on Pressure, Temperature and
Humidity.
Three couples of transducers allow to make a three-axis vector measurement of wind.
1.1 CONVENTIONS
DEFINITIONS OF THE ANEMOMETRIC QUANTITIES MEASURED BY THE HD2003
The wind direction is established through the calculation of angles:
•azimuth
The azimuth is the angle that defines the position of the wind flow along the Horizontal Plane,
with reference to the direction from which the wind itself is coming. The angle is calculated
from 0° to 360° clockwise along the Horizontal Plane. The origin 0° is the direction of
Geographical North. The HD2003 built-in integrated compass measures the magnetic
azimuth, with reference to Magnetic North.
•elevation
This is the angle that defines the position of the wind flow along the Vertical Plane.
It varies from +/-60° along the Vertical Plane: positive inclinations are those over the
Horizontal Plane while the negative ones are those under it.
The wind speed is calculated in terms of intensity of components or resultants:
•SoW, SUV and SoS
The intensity of wind speed is indicated by SoW, that of its component along the Horizontal
Plane U-V is indicated by SUV, while that of sound by SoS.
•U-V-W
These are the three Cartesian components of wind speed.
If we draw a Cartesian plane with U and V along the Horizontal Plane, W will be the Vertical
Axis. The “V” direction coincides with Geographical North and, consequently, the “U” will
coincide with East and the “W” with the vertical.
The wind gust measurement is determined as follows:
•the wind speed averages in a time interval equal to 3 seconds are calculated continuously;
•the maximum value of the averages calculated in the previous point is detected over a time
interval equal to the Average Interval set in the instrument; the maximum value detected is
the measure of wind gust.
Note: the wind gust measure is not averaged over the Averaging Interval, but the Averaging
Interval is only taken as a reference for the duration of the interval in which to detect the
maximum value. The wind gust measurement only reports the wind intensity, not the direction.
OTHER CONVENTIONS
•F.S. and Zero
F.S. identifies the Full Scale of a quantity, while Zero identifies the Scale Minimum Value.
•Factory Default
The Factory Default corresponds to the value of a factory set parameter, when first
programming an instrument which comes out of the production department.
•Internal Refresh
It represents the automatic frequency by which all the calculations are refreshed according to
the set average intervals.

HD2003 - 4 - V4.1
•Symbols
The keys of an IBM compatible PC keyboard are identified with a white text on a black
background, for example:
[Esc] = Esc key, [Enter] = Enter key, [A] = A key
One ASCII generic character or several ASCII generic characters can be identified with the
symbol: <name>, where name is any expression that gives the title to that character.
Example of peculiar characters:
<CR> = Carriage Return <LF> = Line Feed
•Output Data
It is the digital string of all formatted measuring data available for RS232, RS422, AoXnd and
RS485 Serial communication interfaces.
1.2 MODELS
The code HD2003 mentioned in this manual refers to both models:
HD2003
HD2003.1
They represent the same kind of Anemometer, except for the fact that the HD2003 has the
following built-in sensors: Pressure, Temperature, Relative Humidity, in order to measure
these additional output quantities.
When necessary, the difference between the two models is unequivocally underlined.
1.2.1 HEATERS OPTION
The HD2003 is guaranteed to function in temperatures as low as –20°C if ice or snow is
absent, without any heating circuits for sonic transducers.
Temperature conditions below –20°C, or temperatures around 0°C when snowing or ice
possibly forms on the transducers, prevent the HD2003 from functioning correctly, making the
use of the heaters option essential.
The heating circuit intervenes at temperatures below +5°C, with a minimum additional power
of 4 W (with temperature no lower than –10°C), preventing the formation of ice, and ensuring
that the HD2003 functions correctly even during sleet or snow.
The defrosting time depends on the quantity of snow that has deposited on the measurement
volume where the ultrasonic sensors are housed.
The models equipped with the heaters option are named with the additional letter R:
HD2003R
HD2003.1R
1.2.2 RS422 OPTION
The RS422 serial communication mode works with an internal circuit, which must be requested
as an option when ordering and which provides a 4-wire full duplex communication.

HD2003 - 5 - V4.1
1.3 FEATURES
The HD2003 main features are:
♦Determination of anemometric quantities with different units of measurement: wind speed
and direction, U-V-W Cartesian components, wind gust, sonic speed and temperature.
♦(HD2003 Model) Additional quantities measured: pressure, temperature, relative humidity.
♦5 analog outputs in current or voltage, with different ranges.
♦Up to 12 extended analog outputs in current and voltage, at different measuring ranges.
♦5 digital communication interfaces: Serial RS232, RS422, RS485 Modbus, RS485 proprietary
and AoXnd.
♦Digital strings of output data at a configurable emission frequency.
♦Average intervals for all output quantities, configurable at 1÷60 sec or at 1÷60 min.
♦Processing and validity Algorithms for raw measurement signals to provide the
measurement of the anemometric quantity with ±1% precision.
♦Operating mode at High Digital Frequency with serial data output at 50 Hz, or High Analog
Frequency with analog data output from 5Hz to 20Hz.
♦Self-diagnosis with checking and error reporting.
♦Reliability and precision for the whole measurement field, without any need for further
calibrations.
♦Flexible and easy-to-use demonstration software which can be adapted to the customer’s
requirements through a computer interface.
♦Setup user interface and software upgrade via RS232, RS422 or RS485.
♦Compass with magnetoresistive sensor for automatic alignment to the Magnetic North.
♦No moving parts, with reduced maintenance and servicing costs.
♦Robust construction, suitable to operate continuously in severe climatic conditions.
♦Low power consumption.
♦(On request) Heaters Option: Sonic transducers integrated heating device, to prevent
ice and snow formation, ensuring a correct functioning even when sleeting or snowing.
♦(On request) RS422 Option: 4-wire full duplex RS422 communication integrated circuit.

HD2003 - 6 - V4.1
1.4 OPERATING MODES
The HD2003 has five operating modes:
♦RS232 and RS422 Serial Communication Mode (Chap. 3.2)
A connection over a RS232 or RS422 Serial line is established between a Host Computer and
only one HD2003 Anemometer. The Host Computer (Slave) is continuously receiving on its
RS232 serial port, Output Data digital strings, which are automatically supplied by HD2003
(Master), with its own frequency (configurable at a cadence from 1 to 3600s).
In this mode the Setup user interface can be managed from the computer.
♦RS485 ModBus – RS485 Multidrop Communication Mode (Chap. 3.3)
A network with ModBus RTU protocol over the RS485 line can be established, with a Master
(typically the PC or PLC) and one or more HD2003 anemometers together with other sensors,
all operating as Slave unit. Or a RS485 Multidrop network can be established between a Host
Computer and several HD2003 or HD52.3D anemometers (up to 32). The Host Computer
(Master) sends a command to the univocal address of a HD2003 (Slave). Only the
Anemometer which is identified by that address answers on request, giving the Output Data.
In this mode the command to activate the Setup user interface is available.
♦Digital High Frequency Mode (Chap. 3.2.3.11 and Chap. 3.3.2.3)
When in RS232 or RS422 serial communication mode, the Digital High Frequency functioning
can be set up, by obtaining Output Data of the quantities in RS232 or RS422 at a fixed
frequency of 50 Hz (baud rate=115200 and 4 measurement quantities).
When in RS485 Multidrop communication mode, a command for activating the Digital High
frequency can be sent. Then, any command for requiring a measurement can be sent to the
HD2003 up to a maximum frequency of 50 Hz (baud rate=115200 and 4 measurement
quantities).
♦Analog Output Mode (Chap. 3.4)
All measurement quantities can be configured to be converted into 5 analog outputs in current
or voltage, available in different measurement ranges, with a refresh of 1Hz. This mode is
always active, combined with the RS232 Serial, RS422, AoXnd and RS485 Multidrop modes.
When on Digital or Analog High Frequency mode, the 5 analog outputs are still available with a
refresh of 1Hz.
♦Analog Output Extended Mode (AoXnd) - Analog High Frequency ( Chap. 3.5 )
A single HD2003 Anemometer (Master) sends spontaneously digital strings of command over
his RS485 serial line directly connected to a remote module (Slave) ICP DAS I-7024 ®
(provided on Request). There are 4 extended analog outputs, voltage or current, to the
output terminals of the module, related to the measured quantities requested. Up to 3 ICP DAS
I-7024® modules can be connected, for a maximum total of 12 extended analog output. In
normal operation, cadences are settable from 1 to 3600s of update of the analog outputs, that
is to say a maximum frequency of 1Hz.
Under this mode, it is possible to get analog outputs at a considerable distance from the place
of installation of the HD2003, up to 1200m, even in routes subject to high electromagnetic
interference. The analog signals to the output terminals of the module, placed in proximity of
the acquisition device (such as the data logger DeltaOHM HD32MT.1), are electrically insulated
and are not subject to disturbances and interference in the electrical path forming, as it
happens in the analog signals that come directly from anemometer and have a long way
before reaching acquisition device.
Under this mode of AoXnd communication, the High Frequency Analog operation can be set, by
getting the analog output of the measuring quantities needed, at a frequency of 5Hz to 20Hz,
depending on the baud rate of the digital strings of command over the RS485 line.
The Serial RS232, RS422, RS485 ModBus RTU, RS485 Multi-drop and AoXnd
Communication modes are alternative: only one of them can be active. Their activation is
obtained via software (see Chap. 3.2.3.9), subsequently switching the HD2003 off and on. It is
always possible to return to RS232 Serial mode by providing a suitable command when
switching the HD2003 on.

HD2003 - 7 - V4.1
1.5 SPECIFICATIONS
Output quantities
Anemometric Wind speed and direction, U-V-W components, wind gust, sound speed, sonic
temperature
Meteorological (HD2003 Model) Pressure, Temperature, Relative Humidity
Heading Compass with magnetic azimuth
¾Wind Speed
Unit m/s, cm/s, km/h, knots, mph
Range 0 ÷ 70 m/s (252 km/h)
Resolution 0.01 m/s
Accuracy ±1% of reading
¾Wind Direction
Range Azimuth: 0 ÷ 360° Elevation: ±60°
Resolution 0.1 °
Accuracy ±1 °
¾Sound Speed
Range 300 ÷ 380 m/s
Resolution 0.01 m/s
Accuracy ±1% of reading
¾Sonic Temperature
Range -40 +60°C
Resolution 0.1 °C
Accuracy ±1 °C
¾Compass
Range 0÷3600 /10°
Resolution 0.1°
Accuracy ± 1°
¾Moving Averages 1÷60 sec / 1÷60 min
¾Ultrasonic rate 60Hz
Digital Outputs
¾Quantities Anemometric and compass.
(HD2003 Model) Pressure, Temperature, Relative Humidity
¾Communications RS232 and RS422 full duplex, ModBus RTU, RS485 Multidrop and AoXnd half duplex
¾Baud rate 9600 ÷ 115200 bit/sec
¾Output Rate Normal mode (Slow): 1 ÷ 3600 sec
Digital High Frequency (Fast) : fixed 50Hz
Analog Outputs
¾Quantities 5 to be selected from output quantities (anemometric, compass, meteo).
¾Range 0-20mA, 4-20mA, 0÷1V, 0÷5V, 0÷10V, 1÷5V
¾Resolution 14 bits max
Analog Outputs Extended (With ICP DAS I-7024® module on request when placing the order)
¾Quantities up to 12 to be selected from output quantities (anemometric, compass, meteo).
¾Range 0-20mA, 4-20mA, 0÷5V, 0÷10V
¾Resolution 14bits
¾Output Rate Normal mode (Slow): 1 ÷ 3600 sec
Analog High Frequency (Fast) : from 5Hz to 20Hz depending on the baud rate
Power Supply
¾Range 12 ÷ 30 Vdc
¾Power < 2W (Typically: 110mA @ 15Vdc)
< 6W Models with heaters and environment temperature not lower than –10 °C
Heaters Option (On request when placing the order).
Heating with automatic temperature control on sonic transducers, to prevent ice and snow formation and
ensure a correct functioning even when sleeting or snowing.
RS422 Option (On request when placing the order).
Integrated circuit for communication RS422 4-wire full duplex.
Weigh
t
Environmental Conditions
HD2003 : 2.1Kg Temperature Range
-40 +60°C
HD2003.1 : 1.5Kg EMC
CE Regulations
Precipitation Operation ensured up to 300mm/h
r
of wate
r
Humidity
0% ÷ 100% RH

HD2003 - 8 - V4.1
1.6 (HD2003 MODEL)PRESSURE -TEMPERATURE –RELATIVE HUMIDITY SENSORS
Pressure.
Piezoresistive Sensor
Analog Output: 0-20mA, 4-20mA, 0÷1V, 0÷5V, 0÷10V, 1÷5V
Analog Output Extended (AoXnd): 0-20mA, 4-20mA, 0÷5V, 0÷10V
Range: 600 ÷ 1100 mbar
Resolution: 0.1 mbar
Accuracy: ±0.4 mbar @ 20 °C
Temperature Effects: ±0.8mbar between –40°C and +60°C
Long-term stability: 1mbar in 6 months @ 20 °C
Temperature.
Sensor: Pt100
Analog Output: 0-20 mA, 4-20 mA, 0÷1V, 0÷5V, 0÷10V, 1÷5V
Analog Output Extended (AoXnd): 0-20mA, 4-20mA, 0÷5V, 0÷10V
Range : –40 + 60 °C
Resolution: 0.1 °C
Accuracy: ± 0.2 °C, ± 0.15% of reading
Relative Humidity.
Capacity sensor: H6100
Analog Output (0 %÷100 % RH): 0-20mA, 4-20mA, 0÷1V, 0÷5V, 0÷10V, 1÷5V
Analog Output Extended (AoXnd): 0-20mA, 4-20mA, 0÷5V, 0÷10V
Range: 5÷98% RH
Resolution: 0.1 %
Accuracy: ± 2.5% RH @ 23°C

HD2003 - 9 - V4.1
2. INSTALLATION AND MAINTENANCE
2.1 PACKAGING
In order to avoid damage due to transport, the HD2003 Anemometer is supplied fixed in a
special container. Carefully remove the Anemometer from its container and save this one, for
any future packaging and transport.
The warranty does not cover the instrument if, in further shipments, containers other than the
one supplied are used, or if the HD2003 is not fixed inside it.
2.2 MOUNTING AND POSITIONING
The instrument will be vertically mounted and positioned on “open terrain”, far from
turbulences due to near trees or buildings. In the presence of buildings, trees or any other
obstruction, the HD2003 should be positioned at a height of 10 meters above the ground; the
distance between the instrument and any obstruction should be at least 10 times the relevant
height.
2.3 ALIGNMENT (SEE DRAWING DWG1HD2003 PAGE 41)
ORIENTATION A
If the HD2003 is rotated on its vertical axis, it can be fixed in any other angular position.
The HD2003 built-in magnetoresistive sensor allows to automatically refer angular
measurements to Magnetic North, independently of its position.
ORIENTATION B
The HD2003 is connected to a computer in RS232 Serial, RS422 or RS485 Multidrop
communication mode (Chap. 3.2 and Chap. 3.3). Then the HD2003 is rotated on its vertical
axis until the measurement of the compass shows 0.0° +/- 0.1° on the serial communication
program of the computer.
This ‘Orientation B’ ensures greater precision in angular measurements and U-V-W Cartesian
components of wind speed correspond to cardinal points:
V direction= North
U direction = East
W direction = Instrument Vertical Axis.
In order to refer angular measurements to Geographical North, you should consider the
Magnetic Declination error, which is to be algebraically summed to Magnetic North.
Once the alignment is finished, tighten the clamp which fixes HD2003 to the mounting mast.
With strong magnetic fields, (for example radio or telephone antennas are in the same
installation), the automatic calculation of the azimuth angle, may be independent from the
compass meaurement. In order to do it, make an RS232 serial connection (Chapter 2.4.2),
and if you press # on the keyboard of the Host computer, when turning the HD2003 on,
(auto ranging takes a few seconds), you set it up to work with manual North orientation.
To align the instrument, rotate the HD2003 on its vertical axis, so the Geographical North
corresponds to the north side of HD2003, which is identified by the direction of the metal
support opposite the connector (see Orientation B, Drawing DWG1HD2003 page 41).
2.4 ELECTRICAL CONNECTIONS
Electrical connections to the HD2003 are made with its 26 pole connector.
Each pin of the connector, is marked with an identity label and a mnemonic symbol.
See HD2003 Connector on page 38 for references to connector labels and symbols.
(On request) Multipolar cable: the HD2003 may be supplied with a cable and plug.
Various lengths of the cable are available.
(On request) USB cable RS2003: The HD2003 can be supplied with a cable for connection
to the USB port of a PC and a power supply.

HD2003 - 10 - V4.1
2.4.1 POWER SUPPLY AND EARTHING
♦Power supply: 12÷30 Vdc
110mA @ 15Vdc: without Heaters Option
400mA @ 15Vdc and –10°C: with Heaters Option (heating circuit activated)
Power Su
p
p
l
y
12÷30 Vdc
HD2003 Connector
/
S
y
mbo
l
p
ole ¬G / PW
R
+
p
ole −H / PW
R
-
Note for the model with Heaters Option:
When the HD2003 has remained off in temperatures below 0°C, being switched on later
will give initial absorption peaks when the heating circuit turns on. These peaks should be
planned when dimensioning the power supply circuit used (absorption: from 5A to 1A first
5sec @ 15Vdc and –20°C). For greater effectiveness of the heating circuit, it is advisable to
use a Power Supply of 30Vdc, by connecting two pairs of wires, one towards the poles G
and K (PWR +) and the other one towards the poles and J and H (PWR-) of the connector
of the HD2003. (In RS422 the poles K and J are not available).
♦Earth Connection.
The earth connection is fundamental to protect against electromagnetic disturbances.
The HD2003 is installed on a metallic pole fixed to the ground that must be earthed.
Connect the metallic structure of the pole to the earthing screw provided near the HD2003
connector (see Drawing DWG1HD2003 page 41) with a φ1.5 mm² cable.
The connection in the figure was performed by using a screw on the support pole. It's also possible to make the
connection by using a cable tie around the support pole.
2.4.2 RS232 SERIAL COMMUNICATION MODE
This mode can be selected via software (Chap. 3.2.3.9).
Connect the HD2003 cable to a computer’s RS232 serial port. It could be necessary also a
USB-RS232 converter such as DeltaOHM C205M (provided on Request).
If necessary, use a pin to pin extension with a shielded cable.
The possible extension cable plus the HD2003 cable cannot exceed 15 meters.
(Chap. 3.2.2.1).
♦RS232 connections
RS232 Port
(
com
p
uter side
)
9 pole Cannon connector
HD2003 Connector
/ S
y
mbo
l
p
in#2 Y / TXD
p
in#3 L / RXD
p
in#5 X / SG

HD2003 - 11 - V4.1
2.4.3 RS422 SERIAL COMMUNICATION MODE
This mode can be selected via software (Chap. 3.2.3.9).
Connect the cable of the HD2003 to the RS232/RS422 converter connected to the computer.
The cable length can be at maximum 1,200m.
♦RS422 connections
RS422 Port
(
com
p
uter side
)
HD2003 Connector / S
y
mbo
l
Polo Tx B J / Tx +
Polo Tx
A
K / Tx -
Polo Rx B F / Rx +
Polo Rx
A
W / Rx -
2.4.4 RS485 MODBUS RTU AND MULTIDROP COMMUNICATION MODE
This mode can be selected via software (Chap. 3.2.3.9).
Make a parallel connection between each HD2003 of the network and the RS485 port on the
computer, (or the RS232/RS485 converter connected to the computer), by using a shielded
twisted pair cable.
The maximum cable length between the Anemometers placed in the extreme places of the
ModBus or Multidrop RS485 network is 1,200m (Chap. 3.3.1).
♦RS485 ModBus RTU and Multidrop connections
RS485 Port
(
com
p
uter side
)
HD2003 Connector
/ S
y
mbo
l
p
ole B F / DATA +
for all the HD2003 of the network
p
ole A W / DATA -
for all the HD2003 of the network
2.4.5 ANALOG OUTPUT MODE (CHAP.3.4.1)
♦5 Analog Outputs at 14 bits in voltage, 0 ÷ 1V, 0 ÷ 5V, 0 ÷10V ,1 ÷ 5V
Analo
g
Out
p
uts of volta
g
e HD2003 Connector/ S
y
mbo
l
#1 E / OUTV1
#2 V / OUTV2
#3 c
/ OUTV3
#4 Z / OUTV4
#5 M / OUTV5
Analo
g
g
round of
volta
g
e D / RE
F
♦5 Analog Outputs at 14 bits in current, 0-20mA, 4-20mA
Analo
g
Out
p
uts of current HD2003 Connector/ S
y
mbo
l
#1 U / OUTmA1
#2 b / OUTmA2
#3 a
/ OUTmA3
#4 N / OUTmA4
#5 C / OUTmA5
Analo
g
g
round of
curren
t
H / PW
R
−
The maximum loading resistance of the current circuit is 500Ωat 12Vdc of power supply of the HD2003

HD2003 - 12 - V4.1
2.4.6 ANALOG OUTPUT EXTENDED MODE AOXND
With ICP DAS I-7024® module On request when placing the order
This mode can be selected via software (Chap. 3.2.3.9).
Realize a connection, with shielded twisted pair, between the HD2003 and the module
ICP DAS I-7024 ®. The cable length between the most extreme points of the RS485 line, can
be at max. 1,200m. For a long distance connection, a 240Ωresistance in parallel between
DATA+ and DATA- of the ICP DAS I-7024 ® module, is recommended.
♦AoXnd connections
Termina
l
ICP DAS I-7024®
HD2003 Connector/ S
y
mbo
l
DATA+F / DATA +
DATA-W / DATA -
♦Power Supply ICP DAS I-7024 ® module
The same power supply can be used for the HD2003.
Power Su
pp
l
y
12÷30 Vdc
Termina
l
ICP DAS I-7024®
p
olo ¬
(
R
)
+Vs
p
olo −
(
B
)
GND
In order to use the 5 voltage analog outputs of theHD2003 together with those of the
ICP DAS I-7024 ® module, so to have a single ground reference, you should connect:
HD2003 Connector/ S
y
mbo
l
Termina
l
ICP DAS I-7024®
D / RE
F
AGND
2.5 MAINTENANCE
The HD2003 maintenance consists of periodic checks in order to:
♦Find and possibly eliminate all deposits of ground, leaves or any other kind of debris that
may accumulate on the sonic transducers. In highly polluted areas, remove all fouling
deposits from the measuring elements such as sonic transducers, support rods, etc.
♦Verification and possible elimination of the snow mass deposited in the measurement
volume. The presence of a large amount of snow in the volume between the sonic sensors,
delays the process of thawing (Heaters Option).
♦Check and possibly restore the integrity of the connector seal.
♦Check and repair any damage caused by third parties.
♦Check and possibly restore the correct power supply level, especially in case of supply
provided by accumulators or solar panels.

HD2003 - 13 - V4.1
3. PROGRAMMING
3.1 INTRODUCTION
RS232 Serial, RS232, RS485 Multidrop and AoXnd Communication modes are selected via
software, as shown in Chapter 3.2.3.9.
The Setup user interface is available for all modes.
3.2 RS232 AND RS422 SERIAL COMMUNICATION MODE
3.2.1 PARAMETER SETUP
From the Host Computer, open a serial communication program such as Hyper Terminal® or
DeltaMet8u® which is Delta OHM demonstration software.
By using Hyper Terminal® , select and set up the following Menus:
•Port Configuration:
Bit
p
er second
Data bit
Parity
Stop bit
Flow Control
HD2003 baud rate
(
115200
Factor
y
Default, see Cha
p
ter 3.2.3.1
)
8
None
2
None
•Settings / Terminal Setup / Rows:
Set the number of rows at 24.
•Settings / ASCII Setup:
Select ‘Echo typed characters locally’.
Connect power supply and RS232 or RS422 as shown in Chapters 2.4.1, 2.4.2 and 2.4.3.
After the power supply of the instrument has been switched on, the HD2003 will enter the auto
ranging mode for a few seconds and then it will work in Measuring mode and automatically
supply the Output Data which can be displayed on Hyper Terminal ®.
On the computer keyboard, press the character ?to enter Setup mode.
3.2.2 MEASURING MODE
While in Measuring mode, the HD2003 Anemometer transmits the digital strings of Output
Data, each one in a separate line of ASCII characters which correspond to the last
measurement, at an emission frequency and an average interval which may be configured in
the Setup (Chap. 3.2.3). The quantities to be represented in Output Data are selected in Setup
mode, up to 16.
Each quantity’s measured value is formatted into 8 ASCII characters, right justified, with the
space character before the sign and a number of decimal positions depending on the unit of
measurement.
Each string of data is followed by <LF> + <CR> characters.

HD2003 - 14 - V4.1
3.2.2.1 RS232 SERIAL MODE EXAMPLES

HD2003 - 15 - V4.1
3.2.3 SETUP
The Setup allows the user to configure and parameterise the Anemometer according to his
needs through linked Menus, displayed in consecutive pages through a serial communication
program, such as Hyper Terminal® or DeltaMet8u®(Delta OHM demonstration software).
When opening a Menu that allows the selection between different values/options, or a Menu
that allows to set up a numeric value, the value/option correctly stored by the HD2003
and preceeded by a “=” sign, is always highlighted. Each single change of a parameter
operated by the user determines a permanent storage of the new parameter value, still valid
even after the power supply of the HD2003 has been switched off.
In any configuration page which is visualized, a timeout becomes active after a previously set
period: unless a key is pressed on the Host Computer keyboard, the HD2003 returns to
previous pages until Measuring Mode. By consecutively pressing up to 5 characters that are
not available on the current Menu of the page used, you get the same result.
The Main Menu displayed through Hyper Terminal® or DeltaMet8u® (Delta OHM demonstration
software), is the following:
DeltaOHM
Anemometer HD2003 Rel. X.Y (note: X.Y is the firmware revision of the anemometer)
→→ Menu
S. Setup
L. Logging
Esc. Exit
Sel:
Press [Esc] to go back to Measuring Mode (see Chapter 3.2.2).
Type S to enter the Setup Menu.
Type L to display the Logging (see Chapter 3.2.4).
SETUP MENU
The screen page displays:
→→ Setu
p
1. Baud To select the RS232, RS422, RS485, ModBusRTU or AoXnd communication baud rate
2. Gain To set the gain factor for U-V-W, SoW and SUV
3. Threshold To set the minimum threshold for SoW
4. Avera
g
e Interval To set the average interval in seconds or minutes for all output quantities
5. Analo
g
Out
p
u
t
To select the analog range and wind speed range for Analog Outputs and AoXnd
6. Out
p
ut
Q
uantit
y
To select output quantities in RS232, RS422, RS485, ModBusRTU, AoXnd and Analog
Output mode
7. Wind Units To select the unit of measurement of SoW, SoS, U-V-W and SUV
8. Heatin
g
(On request) To enable the heating circuit of sonic transducers
9. COM Mode To select Serial RS232, RS422, RS485, ModBusRTU or AoXnd communication mode
I. ID To set the instrument address for RS485 ModBusRTU and Multidrop mode
R. Out
p
ut Rate To set Digital/Analog High/Low Frequency of output quantity transmission in RS232,
RS422, RS485 and AoXnd
Esc. Exit
Type the alphanumeric character next to each Menu item, in order to activate the corresponding
submenu.

HD2003 - 16 - V4.1
3.2.3.1 BAUD RATE
Typed Character:1 ,
(Baud)
How to set RS232, RS422, RS485 and AoXnd baud rate. The screen page displays:
→→ Baudrate (N,8,2)
1. 9600
2. 19200
3. 38400
4. 57600
5. 115200
Esc. Exit
Enter. Save
= 115200
By typing a number displayed among the Menu items, the relevant baud rate will appear.
For example, by typing 2 , =19200 will appear.
After selecting the desired baud rate number, press [ENTER] to enable the Anemometer at
the new baud rate (=115200 Factory Default).
When baud rate changes, the Hyper Terminal® Port Configuration is to be modified by
inserting the new baud rate in the Bit per second item. It remains active in the HD2003 even
when passing to ModBus RTU or Multidrop RS485 mode or AoXnd.
Note: Press any key in order to get a new screen page.
3.2.3.2 GAIN
Typed Character: 2 ,
(Gain)
How to set the Gain factor. The screen page displays:
Sel: 2
= 10000
Gain [Range= 5000 to 15000]:
It allows to set a gain factor in 1/10000 for U–V–W components and consequently for SoW and
SUV (=10000 Factory Default).
This gain variation allows aligning the wind speeds measured by the HD2003 with the wind
speeds measured by any other reference instrument.
To set the desired gain, type it and then press [ENTER] , make sure that the number is
within the 5000÷15000 range.
3.2.3.3 MINIMUM THRESHOLD
Typed Character: 3 ,
(Threshold)
How to set the Minimum Threshold displayed. Screen page:
Sel: 3
= 20
[cm/s] [Range= 0 to 500]:
It is possible to set a minimum threshold of speed in cm/s, below which SoW is considered
equal to zero (= 20 Factory Default).
Type the digits of the desired value and then press [ENTER] ,according to the 0÷500 range.

HD2003 - 17 - V4.1
3.2.3.4 AVERAGE INTERVAL
Typed Character: 4 ,
(Average Interval)
How to set the interval value in seconds or minutes in order to calculate the moving averages
of all output quantities. The average interval is also the interval considered for the wind gust
measurement (which however is not averaged, see the measurement description on page 3).
The first screen page displays:
→→ Average Interval
1. [sec]
2. [min]
Esc. Exit
= [min]
The time unit of the moving average interval can be chosen, in seconds or minutes (=[min]
Factory Default). After typing the number corresponding to the desired unit:
… if you choose seconds:
→→ Average Interval
= 2
[sec] [Range= 1 to 60]:
… if you choose minutes:
→→ Average Interval
= 2
[min] [Range= 1 to 60]:
The interval value should be set between 1 and 60 (=2Factory Default) for calculating the
moving average. The moving average is the average calculated by the samples acquiring in
the last time interval, equivalent to the set period in seconds or minutes. Averages can be
calculated over a period from 1 to 60 seconds, or from 1 to 60 minutes. The moving average is
calculated on the U-V-W and SoS components (and consequently on all the other anemometric
quantities resulting from them), and for all the remaining output quantities (HD2003 Model:
Pressure, Temperature, Relative Humidity). In substance, all quantities chosen as Output Data
in RS232, RS422, RS485 or AoXnd as well as those chosen as Analog Outputs, are supplied by
the HD2003 with values that represent the average calculated on the last time interval.
The magnetic azimuth provided by the compass is excluded from moving averages.
Type the digits of the desired number according to the range displayed on the screen and then
press [ENTER ].
After choosing the average interval, the instrument automatically sets its Internal Refresh
(Chap. 1.1). The Internal Refresh is equal to 1s if you choose the interval in seconds; if you
choose it in minutes, it is equal to as many seconds as the minutes chosen.
(For example, an average interval of 10min corresponds to an Internal Refresh each 10sec).
3.2.3.5 ANALOG OUTPUT FORMAT
Typed Character: 5 ,
(Analog Output)
How to select the analog range and the wind speeds range for Analog Outputs and Analog
Output Extended (AoXnd) mode. Screen page:
→→ Analog Output
1. mA-V Ranges
2. Speed Ranges
Esc. Exit

HD2003 - 18 - V4.1
♦By typing 1 ,
(mA-V Ranges)
How to select the analog range. The screen page displays:
→→ Ranges
1. 0-20 mA
2. 4-20 mA
3. 0-1 V
4. 0-5 V
5. 0-10 V
6. 1-5 V
Esc. Exit
Enter. Save
AoXnd: no option 3 or 6
= 2
After selecting the number from Menu items which corresponds to the desired analog range,
press [ENTER] to enable the five Anemometer Analog Outputs to provide a voltage/current
signal in the selected range (=4-20mA Factory Default). By pressing [ENTER] , under AoXnd
mode, the same current or voltage range set also for ICP DAS I-7024 ® modules used (Cap.
3.5.1), is stored. When under AoXnd mode the ranges 0-1V and 1-5V are excluded.
Example: if you type 2 , i.e. you choose 4-20mA range, and one of the Analog Outputs is
combined with azimuth 0-360° (Chap. 3.2.3.6), the reciprocity scale is established between
current available as Analog Output or AoXnd and engineering values referring to the azimuth:
0° →4mA
360° →20mA
♦By typing 2 ,
(Speed Ranges)
How to set the engineering range for wind speeds available for Analog Outputs and AoXnd
mode. The following screen page for range setup appears:
Sel: 2
= +/- 70 m/s (U, V, W)
= 0 to 70 m/s (SoW, SUV)
F.S. [Range= 10 to 70]:
Set a positive number in m/s between 10 and 70, which represents the F.S. on the scale of
measurement for SoW and SUV starting from zero; it also represents the extreme limits on the
symmetrical scale of measurement for U-V-W components.
Type the digits of the desired number according to the range displayed on the screen
(= 70m/s Factory Default) and then press [ENTER] .
For instance, if you type 45, having selected 1-5V from Menu “mA-V Ranges”, with one of
Analog Outputs combined with the Ucomponent of wind speed (Chap. 3.2.3.6), the reciprocity
scale is established between the voltage of the relevant Analog Output and the meters per
seconds of U component:
- 45 m/s →1Vdc
+45 m/s →5Vdc
Under Analog Output and AoXnd mode, the only unit of measure possible is m/s for wind
speed.

HD2003 - 19 - V4.1
3.2.3.6 OUTPUT QUANTITIES
Typed Character: 6 ,
(Output Quantity)
How to set output quantities in Serial RS232, RS422, RS485 ModBus RTU, RS485 Multidrop,
AoXnd and Analog Output mode. Screen page:
→→ Output Quantity
1. User
Esc. Exit
= 1
Sel:
♦By typing 1 ,
(User)
The following Custom Format Menu appears:
→→ Custom Forma
t
Decimal digits
0.
q
0 1
1.
q
1 1
2.
q
2 1
3.
q
3 1
4.
q
4 1
5. U-V-W 2 (0 if in cm/s)
6. S
p
eed in U-V
2 (0 if in cm/s)
7. S
p
eed of Wind 2 (0 if in cm/s)
8. Azimuth 1
9. Elevation 1
S. S
p
eed of sound 1 (0 if in cm/s)
T. Sonic tem
p
erature 1
C. Com
p
ass 0
E. Errors 0
G. Gus
t
2 (0 if in cm/s)
Esc. Exit
= 78012tce
Sel [max 12]:
You can select the type and order of the measured quantities which will appear in Output Data,
supplied in Serial RS232/RS422 mode or obtained after a query in RS485 Multidrop mode. For
the RS485 ModBus RTU mode, the integer 16-bit ModBus registers can be set: number of
registers, corresponding quantities and the order in which the quantities appear.
Since the values of the ModBus registers are expressed integers, to obtain the decimal value
you must refer to the table of the Decimal digits. Examples: the Wind Speed vv=2.45 [m/s], in
the ModBus register is vv=245 [m/s x 100] (2 decimals in the table). The sound speed
vs=34891 [cm/s], in the ModBus register is vs=34891 [cm/s] (0 decimals in the table).
For the Extended Analog Output (AoXnd) mode, it is possible to choose the type and order of
the measuring quantities, in group of four, matched to the 4 Analog Outputs available to the
terminals of each ICP DAS I-7024 ® module used.
For Analog Output mode, you can choose the type and order of measured quantities coupled
with the five Analog Outputs available to the connector of the Anemometer.
The string of desired output quantities is established by typing in the desired order, the
corresponding alphanumeric characters which appear on Menu (= 78012tce HD2003 Factory
Default, also for ModBus Registers) (= 78tce HD2003.1 Factory Default, also for ModBus
Registers). The string may consist of 12 alphanumeric characters at most that correspond,
with the selection of 5. U-V-W or E. Errors, to 14 quantities or ModBus Registers (in RS485
ModBus RTU mode).

HD2003 - 20 - V4.1
SERIAL RS232, RS422, RS485 MULTIDROP AND MODBUS RTU MODE
For output quantities format in Serial RS232 and RS422 modes see Chapter 3.2.2 Measuring
mode.For RS485 Multidrop mode see Chapter 3.3.2 HD2003 Communication Protocol.
The output quantities will be available in the digital Output Data in the same order as they
have been chosen in the string.
For output quantities format in the HD2003 ModBus registers see Chapter 3.3.3 RS485
ModBus RTU Parameter Setup.
ANALOG OUTPUT MODE
In Analog Output mode, the output quantities format is extremely transparent for the user who
will have these quantities in the terminals designed for Analog Outputs. These quantities will
be converted into analog output ranges selected as shown in Chapter 3.2.3.5.
They coincide with the first five quantities selected from the above-mentioned string of output
quantities, without considering the ones that follow. They will be available in the terminals of
Analog Outputs, in the same order as they have been chosen in the string.
Example: if you set a string of quantities like st78c59, the last two quantities, i.e. 5 (U,V,W)
and 9 (Elevation) are ignored, while the first five quantities will be available in the terminals of
Analog Outputs (see HD2003 Connector on page 38):
Out
p
ut
Q
uantitie
s
HD2003 Connector
S
y
mbo
l
s
(
S
p
eed of Sound
)
E
OUTV1
t
(
Sonic Tem
p
erature
)
V
OUTV2
7
(
S
p
eed of wind
)
c
OUTV3
8
(
Azimuth
)
Z
OUTV4
c
(
Com
p
ass
)
M
OUTV5
NB: In this example, an analog voltage range has been selected (Chap. 3.2.3.5).
ANALOG OUTPUT EXTENDED MODE (AOXND)
Under Extended Analog Output mode, the formatting of the output quantities is totally
transparent to the user, who will have these quantities available to the terminals provided for
the Analog Outputs in the ICP DAS I-7024 ® modules used, converted to the output analog
ranges used, as described under Chap. 3.2.3.5 and Chap. 3.5.1.
The number of the ICP DAS I-7024 ® modules used can be maximum three, with a sequential
address (00, 01, 02 see Chap 3.5.1 ) and each module has 4 analog outputs. Starting from
the string of the output quantities and following the same order used to select them, the
quantities are available in groups of four to the terminals 0,1,2,3 of the modules, moving
progressively from the module addressed 00, continuing to 01 (if used) then to 02 (if used).
The output quantities which are exceeding with respect to those on the modules, are ignored.
If the string of the output quantities has a number of quantities lower than those available on
the modules, it means that the remaining analog channels on the modules are unused.
For instance:
(HD2003 Model). If the string of the output quantities is set to 78012tc, that is to say with
seven quantities, it means it is necessary to use two ICP DAS I-7024 ® modules, the first one
with address 00 e and the second one with address 01.
The first four quantities of the string, corresponding to 7801 (Wind Speed, Azimuth, Pressure,
Temperature), are available at the terminals 0,1,2,3 (current or voltage) of the module 00.
The remaining three quantities 2tc (RH, Sonic Temperature, Compass), are available at the
terminals 0,1,2 (current or voltage) of the module 01 (Cap. 3.5.1).