NANHUA FAR3 Series User manual
FAR3 Series
Ultrasonic Wind Sensor
User Maunal
File No.：NANHUA-FAR3-en-user-1.0
Shanhgai Nanhua Electronics Co.,Ltd.
Building 9, No. 1755, Wenbei Road, Jiading District, Shanghai, China Tel: +86 21-3912 6868
Nanhua Electronics (Taicang) Co., Ltd.
No.88, Yuanjiang Road, ETDZ of Taicang Port, Taicang, Jiangsu, China Tel: +86 512-5666 6888
©NANHUA Electronics Co., Ltd. All rights reserved. 上海南华机电有限公司版权所有 www.nanhua.com 1 | 21
FAR3 Series User Manual
©NANHUA Electronics Co., Ltd. All rights reserved. 上海南华机电有限公司版权所有 www.nanhua.com 2 | 21
FAR3 Series User Manual
© Copyright Reserved
Nanhua Electronics Co., Ltd. All rights reserved. Reproduction, disclosure to third parties or use of its contents, in
whole or in part, is prohibited without the prior written consent of Nanhua Electronics Co., Ltd.
⚠Declaration
Nanhua Electronics Co., Ltd. reserves the right to technically change or modify the content of this article without prior
notice. The information provided by Nanhua Electronics Co., Ltd. is believed to be accurate and reliable. Nanhua
Electronics Co., Ltd. assumes no responsibility for use of this document by the users, nor is it liable for any patent or
third party rights in use of this document.
Copyright, Trademark Rights and Other Declaration
、、are trademarks or registered trademarks of Shanghai Nanhua Electronics Co.,
Ltd. Other trademarks or product names are the property of their respective companies.
Warning
Read this manual to ensure that you can correctly install this product into your system and achieve the desired effect.
Please read the contents of this manual and the suggestions in the relevant chapters carefully.
⚠
Safety Instructions
•Installation and commissioning must be carried out by suitably qualified specialist personnel only.
•Never take measurements on or touch live electrical parts.
•Pay attention to the technical data and storage and operating conditions.
⚠
Designated Use
•The product must only be operated within the range of the specified technical data.
•The safety and operation of the product can no longer be guaranteed if it is modified.
⚠
⚠
Incorrect Use
If the product is installed incorrectly
•It may not function.
•It may be permanently damaged.
•Danger of injury may exist if the equipment is allowed to fall.
If the equipment is not connected correctly
•It may not function.
•It may be permanently damaged.
•The possibility of an electrical shock may exist.
©NANHUA Electronics Co., Ltd. All rights reserved. 上海南华机电有限公司版权所有 www.nanhua.com 3 | 21
FAR3 Series User Manual
Disposal
In accordance with EU Directive WEEE, this product must not be disposed of with other household waste.
At the end of it's life, the product must be taken to the appropriate local facility for disposal or recycling
of this electronic product.
In other countries or regions outside EU, please follow the current regulations on the disposal of waste
electrical and electronic products in their respective countries or regions for proper disposal.
Contents
1.0 Product Description .............................................................................................................................................5
2.0 Product Specifications .........................................................................................................................................6
2.1 Principle of ultrasonic wind measurement.................................................................................................6
2.2 Outline diagram ............................................................................................................................................7
2.3 Technical Parameters....................................................................................................................................7
3.0 Preparation Before Installation .........................................................................................................................10
4.0 Installation Steps ................................................................................................................................................10
4.1 Installation requirements ...........................................................................................................................10
4.2 Connection cable ........................................................................................................................................11
4.3 Power supply ...............................................................................................................................................11
4.4 Connect ........................................................................................................................................................12
4.5 Machine installation....................................................................................................................................13
4.6 lightning protection....................................................................................................................................14
4.6.1 Structural Lightning Protection.......................................................................................................14
4.6.2 Indirect lightning strike....................................................................................................................15
4.6.3 Multi-frequency intensive lightning strikes ...................................................................................15
5.0 Product Use.........................................................................................................................................................16
5.1 Analog output .............................................................................................................................................16
5.2 digital output...............................................................................................................................................17
6.0 Product Maintenance and Fault Detection......................................................................................................18
6.1 Product Maintenance .................................................................................................................................18
6.2 Common Faults and Troubleshooting......................................................................................................18
7.0 Transportation ....................................................................................................................................................19
Ordering information...............................................................................................................................................19
1. FAR3................................................................................................................................................................19
2. Cable...............................................................................................................................................................20
©NANHUA Electronics Co., Ltd. All rights reserved. 上海南华机电有限公司版权所有 www.nanhua.com 4 | 21
FAR3 Series User Manual
©NANHUA Electronics Co., Ltd. All rights reserved. 上海南华机电有限公司版权所有 www.nanhua.com 5 | 21
FAR3 Series User Manual
1.0 Product Description
Thank you for purchasing the FAR3 series ultrasonic wind
sensor products. This series of products is an integrated
wind speed and wind direction measurement sensor based
on ultrasonic ToF measurement technology developed by
Nanhua, which can measure wind speed and wind direction
at the same time.
Normative References
IEC 61326-1:2020 EMC requirements for electrical equipment for measurement, control and laboratory use
- Part 1: Basic requirements
IEC 61000-4-2:2008 Electromagnetic Compatibility EMC Part 4-2 Test and Measurement Techniques
Electrostatic Discharge Immunity Test
IEC 61000-4-3:2020 Electromagnetic Compatibility EMC Part 4-3 Test and Measurement Techniques
Radiation Immunity to Radio Frequency Electromagnetic Fields
IEC 61000-4-4:2012 Electromagnetic Compatibility EMC Part 4-4 Test and Measurement Techniques
Electrical Fast Transient Burst Immunity Test
IEC 61000-4-5:2014 Electromagnetic Compatibility EMC Part 4-5 Test and Measurement Techniques Surge
(Shock) Immunity Test
IEC 61000-4-8:2009 Electromagnetic compatibility EMC Part 4-8 Test and measurement techniques Power
frequency magnetic field immunity
IEC 61010-1:2010 Safety requirements for electrical equipment for measurement, control and laboratory
use - Part 1: General requirements
IEC 60068-2-52:2017 Environmental testing for electrical and electronic products - Part 2: Test method
Test Ka: Salt spray
IEC 60068-2-6:2007 Environmental testing for electrical and electronic products - Part 2: Test methods
Test Fc: Vibration (sinusoidal)
IEC 60068-2-64:2008 Environmental testing for electrical and electronic products - Part 2: Test methods
Test Fh: Vibration (random)
IEC 60529:2013 Enclosure protection class (IP code)
©NANHUA Electronics Co., Ltd. All rights reserved. 上海南华机电有限公司版权所有 www.nanhua.com 6 | 21
FAR3 Series User Manual
2.0 Product Specifications
2.1 Principle of ultrasonic wind measurement
The propagation speed of ultrasonic waves in the air is affected by air flow (ie wind). Therefore, a
method is proposed to reversely deduce the wind speed between two points by measuring the
propagation time of ultrasonic waves between two points with a known distance. As shown in the figure
below, a group of ultrasonic pulses transmitted by the ultrasonic transducer arrive at the transducer at the
receiving end, and the time difference between the arrival of the same waveform at the receiving end can
be calculated by the following formula:
（1）
Among them, V_0 is the speed of sound under calm wind, v is the wind speed, L is the distance between
two transducers, when the direction is consistent with the direction of ultrasonic propagation, it is
positive, otherwise it is negative. If the distance L, static sound velocity V_0 and the measured propagation
time T are known, the wind speed v can be calculated by formula (1).
However, in practical applications, the static sound velocity V_0 will be affected by the environment such
as temperature, humidity, atmospheric density, and atmospheric pressure. In particular, changes in
temperature will cause large changes in V_0, resulting in large wind speed measurement errors. In order to
eliminate the impact of environmental changes on the static sound velocity V_0, the sensor adopts a two-
way measurement method, that is, to measure the change of the propagation time in two opposite
directions at the same time to offset the influence of the static sound velocity change.
It can be seen from formula (1)
tailwind travel time
（2）
headwind travel time
（3）
(2) and (3) eliminate the static sound velocity, and the wind velocity measurement formula can be
obtained:
（4）
Ultrasonic Transducer Ultrasonic Transducer
L
Tailwind
T1Headwind
T2
V
©NANHUA Electronics Co., Ltd. All rights reserved. 上海南华机电有限公司版权所有 www.nanhua.com 7 | 21
FAR3 Series User Manual
Formula (4) eliminates the influence of static sound velocity V_0, which we call "relative pulse sound time
method". In order to measure the wind speed and wind direction in all directions, it is necessary to use
multiple pairs of probes. The common two-dimensional anemometer uses two pairs of probes to measure
the wind speed in two horizontal directions at the same time in the way of perpendicular to each other on
the horizontal plane, and then performs orthogonal synthesis calculation to obtain the wind speed and
wind direction on the horizontal plane.
2.2 Outline diagram
Unit：mm
2.3 Technical Parameters
Wind speed parameter
Wind speed
measurement
Measuring range
0~75 m/s
Accuracy
±0.5m/s RMS or ±3% RMS take the larger value (0-60m/s)
±5% RMS （＞60m/s）
Resolution
0.1 m/s
Start wind speed
0.3m/s
©NANHUA Electronics Co., Ltd. All rights reserved. 上海南华机电有限公司版权所有 www.nanhua.com 8 | 21
FAR3 Series User Manual
Wind direction parameter
Wind direction
measurement
Measuring range
0~360°
Accuracy
±2°RMSE (＞5m/s)
Resolution
1°
Start wind speed
0.3m/s
Basic parameters
Signal output
Digital output
RS485, half duplex mode, baud rate 9600bps
Output format
Modbus-RTU agreement/Nanhua agreement
Refresh rate
1Hz
Analog output
4~20mA（Load Resistance＜300Ω）
Surge (shock)
IEC61000-4-5 power port , wire to wire：±6KV
Electrostatic
discharge
EC61000-4-2 contact discharge：±8KV / air discharge：±15KV
Group pulse
IEC61000-4-4 power supply±4kV/ signal±2kV
power supply
Voltage
24VDC±10%
Current
＜150mA (@24VDC)
Heating voltage
24VDC
Heating power
240W (@24VDC)
Structural
parameters
Material
aluminum alloy
Surface and color
natural color anodizing
Physical dimension
Ø150 x 170mm
Weight
1.4 Kg
©NANHUA Electronics Co., Ltd. All rights reserved. 上海南华机电有限公司版权所有 www.nanhua.com 9 | 21
FAR3 Series User Manual
IP rate
IEC60529 IP67
Anti-vibration
IEC60068-2-6 20g
Anti-corrosion
ISO9227 720H
working
environment
Operating
temperature
-20℃至+70℃(without heating function)
-40℃至+70℃(turn on the heating function)
storage temperature
-50℃至+90℃
Humidity
0%~100%RH
Note: Parameters are changed without prior notice.
©NANHUA Electronics Co., Ltd. All rights reserved. 上海南华机电有限公司版权所有 www.nanhua.com 10 | 21
FAR3 Series User Manual
3.0 Preparation Before Installation
3.1 Before officially installing this product, please make sure whether the following devices or
accessories are ready, otherwise it may not be available:
⚫Acquisition (display) device that matches the output signal of this product, such as a PC or our
company's product wind speed and direction display FA220C
⚫The connecting cable used to connect this product and the signal acquisition (display) device, such
as the anemometer cable PW770B
⚫24VDC 300W DC stabilized voltage source above 12.5A is used for heating and power supply of
products
⚫Please use a metal pipe with an outer diameter of φ50mm or less and an inner diameter of φ33mm
or more for installation. It is recommended to use stainless steel 316 material
⚫The north (south) needle determines the true reference bearing
3.2 Open sensor
The sensor is packaged in an individual box, carefully protected from mechanical influences during
transport.
Attached:
⚫1 sensor
⚫1 datasheet
Accessories:
⚫Connecting cables (purchased separately as ordered)
⚫Mounting Brackets (purchased separately as ordered)
3.3 Product inspection
Please verify in detail the completeness of the delivery and eventual shipping damage. For claims,
please contact us in writing immediately.
4.0 Installation Steps
To fully describe the wind, it is necessary to account for its speed and direction. These two components
are subject to temporal and spatial variations, and they are only valid for the location where the
measuring instrument is installed. We recommend choosing the installation site carefully.
4.1 Installation requirements
To meet and exceed the standards listed in the FAR3 family of product specifications, Users should
check the surrounding environment before installation to ensure that it is not affected by other
equipment (such as radios, radar transmitters, etc).
⚫When installing the device, make sure that it is parallel to the measuring level;
⚫For indoor use, can be installed in any desired orientation of the measuring plane;
©NANHUA Electronics Co., Ltd. All rights reserved. 上海南华机电有限公司版权所有 www.nanhua.com 11 | 21
FAR3 Series User Manual
⚫When installing, the direction of the arrow N on the top of the instrument should be aligned with
the true north direction;
⚫Do not install near high energy radar or wireless transmitters. It is best to conduct a site survey to
determine the local electronic interference intensity;
⚫Do not install it on the same plane as any radar scanning device, and keep at least 2m away;
⚫Keep away from radio receiving antennas, If it is unavoidable, the minimum distance should be
ensured (VHF IMM 1m，MF/HF 5m，Satcom 5m ）；
⚫Make sure there are no obstructions near the instrument, such as trees, masts and buildings. Ideally,
the equipment should be installed more than 10m above the ground in an open area. An open area
is defined as a distance between the instrument and any obstruction of at least 10 times the height
of the obstruction.
⚫The mast must be grounded in accordance with regulations.
Notice: Buildings, bridges, embankments, and trees will affect the wind meter's measurements,
and wind gusts from driving vehicles may also affect wind measurements.
4.2 Connection cable
⚫Maximum length: depends on the selected communication format (RS485) and baud rate. Under
the specified communication interface and baud rate, the maximum length of the cable shall not
exceed the specified length of 200 meters.
⚫Analog interface: 4-20mA total resistance not greater than 300Ω.
⚫Connector specification: Binder 423 type connector 99 5626 15 07 or Connectors of the same
specifications.
⚫The corresponding model of our finished cable is: PW770B, specification description: 7-core M16
aviation socket; the other end is a tubular end; 5*0.25mm²+2*1.5mm² shielded wire.
Notice:
⚫Cable length can be customized according to actual needs, the current length is 25 meters,
please consult our company for other lengths.
⚫Please use our original cable, because its core is strengthened.
⚫The connection cable should be shortened as much as possible according to the actual needs
of the site to reduce the voltage drop on the cable and maximize the heating power. With a
25m connecting cable, the actual heating power of the FA31 series will be <240W due to the
voltage drop of the connecting cable.
4.3 Power supply
⚫Products with automatic heating must be powered by a 24VDC power supply with a power of ≥
300W.
⚫The power supply unit used must be certified to comply with Class III Equipment Protection
Standard (SELV).
©NANHUA Electronics Co., Ltd. All rights reserved. 上海南华机电有限公司版权所有 www.nanhua.com 12 | 21
FAR3 Series User Manual
4.4 Connect
The electrical output interface of the device is under the base and is led out through a standard aviation
socket. The definition of the section of the aviation socket is shown in the following figure:
Port No
Definition
Sensor Bottom Connection View
1
Wind speed analog interface+
2
RS485 serial interface B-
3
Wind direction analog interface+
4
RS485 serial interface A+
5
Analog ground
6
24V DC Positive -
7
24V DC positive +
If you use the matching cable accessories, you can find the corresponding interface definition through
the following chromatogram table:
color and terminal
No
Interface definition
Pink - Terminal 1
Wind speed analog interface+
Yellow - Terminal 2
RS485 serial interface B-
Gray - Terminal 3
Wind direction analog interface+
Green - terminal 4
RS485 serial interface A+
Blue - Terminal 5
Analog ground
White - Terminal 6
24V DC Positive -
Brown - Terminal 7
24V DC positive +
When the FAR3 ultrasonic wind sensor is connected to the FA220C display, refer to the following wiring
diagram:
When matching with our sensor matching cable:
The number tube of the pink signal line of the cable is marked WindS AL+, indicating the wind speed
analog signal of the sensor.
The number tube of the gray signal line of the cable is marked WindD AL+, which indicates the wind
direction analog signal of the sensor.
©NANHUA Electronics Co., Ltd. All rights reserved. 上海南华机电有限公司版权所有 www.nanhua.com 13 | 21
FAR3 Series User Manual
Precautions:
1. If you need to use the heating function, you need to connect the FAR3 ultrasonic wind sensor to the
24V+ and 24V- power lines of the FA220C display and separately connect to the 24VDC DC power
supply. It is recommended that the DC power supply power be ≥300W.
2. The analog ground should be connected to the current ring ground of the control cabinet, otherwise
the analog output will not work properly!
3. The cable shielding layer and shell must be reliably grounded.
4.5 Machine installation
The ultrasonic wind sensor should be installed on the top of the connecting mast with an outer
diameter of φ50mm, prepare accessories and products as shown in the figure below.
Installation：
1. Fix the outer diameter φ50mm tube firmly
2. Pass the aviation plug of the cable through the φ50mm tube, insert it into the aviation socket at the
bottom of the corresponding sensor and lock it.
©NANHUA Electronics Co., Ltd. All rights reserved. 上海南华机电有限公司版权所有 www.nanhua.com 14 | 21
FAR3 Series User Manual
3. Put the ultrasonic wind sensor into the top of the installation pipe, and adjust the wind sensor to
align with the north direction.
4. Evenly tighten the M8 nuts on the base of the ultrasonic wind sensor to ensure that it is locked flat.
Point north：
In order to correctly display the wind direction, the ultrasonic wind sensor must be pointed in the
direction of true north. Point the probe marked on the sensor to the true north, and please align the
north mark with the geographical magnetic pole (can be calibrated with a compass).
Note：
1. The magnetic north pole indicated by the compass does not exactly coincide with the
geographic north pole, so the deviation (error) of the location must be taken into account when
calibrating the sensor.
The error is related to the location, and the maximum error may exceed 15° (eg northeast). In East
China, the error is negligible (<3°). Additional more detailed information on this part can be found
on the Internet.
2. The ultrasonic wind sensor is a precision instrument, handle it with care and do not bump it.
•3.The sensor should be installed in the lightning protection area LPZ 0B
4. Installing the device is carried out at a dangerous height. Assemblers must follow safety
regulations.
4.6 lightning protection
During the installation and use of this product, if it encounters a direct lightning strike, it may cause
damage to the product. This section provides general guidelines on how to protect your product from
lightning strikes.
4.6.1 Structural Lightning Protection
The more common lightning protection method is to use conductive needle-shaped metal rods or
conductive rings on the top of the equipment, and the metal rods and conductive rings are connected
to the ground through metal, so as to realize the lightning protection of the equipment. The needle-
©NANHUA Electronics Co., Ltd. All rights reserved. 上海南华机电有限公司版权所有 www.nanhua.com 15 | 21
FAR3 Series User Manual
shaped metal rod can release the charge on the device by using the principle of tip discharge, and the
conductive ring uses the principle of shielding to protect the device from lightning strikes.
For the lightning protection methods of the two structures, please refer to the following schematic
diagram:
Figure 1: Needle-shaped metal rod lightning protection Figure 2: Conductive ring lightning
protection
4.6.2 Indirect lightning strike
If there are other lightning protection facilities in the system connected to the user's equipment and the
system structure is complex or the ground resistance of the lightning protection facilities is too large,
Therefore, in addition to structural lightning protection measures, it is very necessary to effectively
defend against indirect lightning strike. Usually, the way to prevent indirect lightning strike should be to
use shielded connecting cables and use surge protectors and metal electrical cabinets at the connecting
ends. The following is a typical schematic diagram:
Figure 3: Protection methods against indirect lightning strike
4.6.3 Multi-frequency intensive lightning strikes
©NANHUA Electronics Co., Ltd. All rights reserved. 上海南华机电有限公司版权所有 www.nanhua.com 16 | 21
FAR3 Series User Manual
For the site where lightning weather occurs frequently in the equipment assembly site, we recommend
that users add additional shielding protection and suggest that users have good grounding and low
ground resistance, which is an effective way to effectively prevent multi-frequency intensive lightning
strikes. The following is a typical schematic diagram:
Figure 4: Protection of Multi-frequency intensive lightning strikes
5.0 Product Use
After the product is correctly installed according to the above step 4.0, it can be used.
5.1 Analog output
FAR3 provides two channels of analog data, respectively, the wind speed analog 4-20mA output, the
corresponding range is 0~50m/s (associated with the order number); the wind direction analog 4-20mA
output, the corresponding range is 0~360° ;
Example graph of wind speed and current output characteristic curve:
Schematic diagram of wind direction current output characteristic curve:
©NANHUA Electronics Co., Ltd. All rights reserved. 上海南华机电有限公司版权所有 www.nanhua.com 17 | 21
FAR3 Series User Manual
Note：
⚫When the sensor fails, the wind speed and direction are constant and output 2mA
⚫4-20mA current output at the wind speed terminal corresponds to the range, see the order
number
5.2 digital output
5.2.1. Hardware Configuration
The FAR3 digital port is 2 pins: RS485-(B); 4 pins: RS485+(A)
5.2.2. Communication protocol analysis
RS485 to PC Protocol (baud rate 9600/8bit/1bit stop/no parity)
Communication data definition 7 bytes are automatically output every 1s:
0xAA/0xBB
0x04
0xXX
0xXX
0xZZ
0xZZ
checksum
sync head
equipment is
normal
0xAA
equipment
fails 0xBB
message
length
Gain 10
times wind
speed
high byte
Gain 10
times wind
speed
low byte
Gain 1 times
wind direction
high byte
Gain 1 times
wind direction
high byte
Checksum of wind
speed and direction
data
example: 0xAA 0x04 0x01 0x6A 0x01 0x2C 0x98
Indicates that the wind speed is 0x016A = 36.2m/s ; Wind direction is 0x012C =300°
Note: An exception occurs when the device is running, and the synchronization header will change
from 0xAA to 0xBB
©NANHUA Electronics Co., Ltd. All rights reserved. 上海南华机电有限公司版权所有 www.nanhua.com 18 | 21
FAR3 Series User Manual
6.0 Product Maintenance and Fault Detection
6.1 Product Maintenance
The sensor design allows long maintenance-free operation.
We recommend regular visual verification and functional testing of wind sensors.
When performing functional tests, please note the following:
1. Visually check that there is no obstruction near the measurement channel of the equipment probe (if
there is obstruction or sludge, gently scrub it with a fine silk cloth dampened with absolute alcohol, so
as to avoid the deposition of dust, ice and snow from affecting the reception or emission of ultrasonic
waves).
2. Signal measurement request, check sensor.
If necessary, please contact the manufacturer to inspect and repair the faulty product. Do not open the
product and under no circumstances attempt to repair the product yourself.
For product warranty and maintenance matters, please contact:
Shanhgai Nanhua Electronics Co.,Ltd.
Bldg 9, No.1755 Wenbei Road, Jiading District,Shanghai,China
Tel：+86-21-3912 6868
Nanhua Electronics (Taicang) Co., Ltd.
NO.88 Yuanjiang Road, ETDZ of Taicang Port,Taicang,Jiangsu,China
Tel：+86-512-5666 6888
Web: www.nanhua.com | E-mail: sales@nanhua.com
6.2 Common Faults and Troubleshooting
Symptoms
Inspection Method
During the wind
measurement process, the
external wind speed
changes:
The device outputs a fixed
value, which does not
change or is always "2mA"
Due to environmental conditions, the device cannot perform a valid
test
quantity. May be caused by:
- There is a foreign object that interferes with the measurement of
the sensor --> remove the interfering object
- The sensor probe is dirty --> clean the sensor
- One of the sensor probes is faulty --> return to factory for repair
©NANHUA Electronics Co., Ltd. All rights reserved. 上海南华机电有限公司版权所有 www.nanhua.com 19 | 21
FAR3 Series User Manual
- sensor is covered with ice and snow --> check if the heating
setting is on / check the heating function and heating wire
connection
- The device is operating measurements well above the specified
range.
Wrong value for wind
direction
- Check if the device is pointing north when installed
The wind speed value jumps
too much
- Check power
- Check that the wiring connections are correct
The device has no way to
communicate and respond
- Check power
- Check that the wiring connections are correct
The current value cannot be
read correctly after the
device is connected
- check power
- Check whether the wiring connection is correct (blue is signal
negative I-, pink is wind speed current I+, gray is wind direction
current I+)
- Check whether the reading device is "4-wire current loop" reading
mode
The wind speed value is too
small
- Check the installation location, whether it meets the installation
requirements in the Nanhua FAR manual or WMO's requirements
for the installation of anemometers
- Detect whether the wind speed measurement range setting of the
reading device is consistent with the sensor
- Use a laboratory wind tunnel that conforms to the standard of the
wind tunnel laboratory: ISO3966 for wind speed value calibration
7.0 Transportation
If it is necessary to transport the sensor, the instrument must be carefully packaged to prevent mechanical
influence or other damage. It is recommended to use the original packaging.
Ordering information
1. FAR3
This manual suits for next models
6
Table of contents
