background image

 Location of Radar Installation 

1.6.

1) Confirm the observed region in relation the topography features

In this example the radar must cover an altitude of 1500 meters maximum and a 70km distance

radius within the rainfall forecast area. Therefore there should not be any structures or objects
higher than radar around the installation point.

2) When installing antenna on building rooftop or a tall tower in urban area

When  mount  the  radar  on  the  stand  or  tower,  it  must  be  higher  than  any  surrounding 
obstruction  (building,  structure)  for  proper  radar  operation.  The  tower  must  be  designed 
strong enough to withstand heavy storms, winds and severe weather conditions.   
Also  remind  that  a  crane  or  aerial  work  platform  vehicle  might  be  necessary  to  mount  the 
radar and install the tower. It is important to consider any additional space required for crane 
operation during installation or repair. 

3) Lightning protection and grounding considerations

Provide  a  lightning  rod  near  or  around  the  radar  area  to  improve  lightning  protection 
performance based on JIS A 4201, JIS Z 9290 and IEC 62305.   
The protection systems should include surge protectors/absorbers.   
The  grounding  system  will  typically  consist  of  an  underground  grid,  radials,  or  rods  which 
provide a ground resistance of not more than 1 ohm. It should have a connection point at the 
base of the tower. Refer to APPENDIX A for more detail. 

P

ower

 

P

ower

 

Range Side Lobe

 

Suppression

 

Ratio

 

Figure 1.7: Actual Condition

 

Observe area 

NOT GOOD

 

GOOD

 

Side view 

Top view 

2

 

.

 

7 deg

 

GOOD

 

NOT GOOD

 

-3deg 

0m 

0.62m

12m 

50m 

-2m 

0m 

Main lobe threshold: -20dB 

0m 

Main beam 

Return produces ground clutter

Main lobe 

Figure 1.8: Ideal Condition 

Figure 1.9: Distance of main lobe 

Summary of Contents for WR2120

Page 1: ...INSTALLATION MANUAL WEATHER RADAR MODEL WR2120 www furuno com...

Page 2: ...is value is applied when radar is installed in a public space Value is defined as on human body surface over a 6 minute period with the flux density averaged from the measurement Moreover this measure...

Page 3: ...ces only protect against indirect lightning and surges to the radar components In case of a direct lightning strike these protection devices may not protect radar or surrounding personnel Install the...

Page 4: ...and others will be shipped by air or sea from Japan to overseas A person who is in charge of installing radar has to keep a packing list in safe because it is written serial number of each unit ATU S...

Page 5: ...ion Material list 13 3 PRIOR CONFIRMATION 15 3 1 Confirmation Items 15 3 2 Power Equipment 15 3 3 Measurements 16 3 4 Network communication cable 16 3 5 Precautionary item 16 4 CONSTRUCTION 17 Require...

Page 6: ...t 43 5 3 6 Conclusion 45 6 OUTLINE DRAWING 46 7 SYSTEM DIAGRAM 50 APPENDIX 51 A LIGHTNING PROTECTION ASSESSMENT 51 A 1 Introduction 51 A 2 Risk Assessment 51 A 2 1 Evaluate the need of protection 51 A...

Page 7: ...band radars X is derived from the XX2 secret band It uses smaller wavelength is more sensitive and can detect smaller particles It operates on 2 5 4 cm wavelength and a frequency of 8 12 GHz These ra...

Page 8: ...enna and also directs the return signal from the antenna to the receiver Receiver Detects the signal returned from a target Transmitter Generates the microwave signal at the correct phase and amplitud...

Page 9: ...radar System 1 4 The single X band weather radar can be difficult to avoid problems with blind areas due to buildings mountains or strong signal extinction by heavy rain Furuno provide multi radar sys...

Page 10: ...e horizontal axis on the rectangular coordinate graph corresponds to the circles on the polar coordinate graph The vertical axis on the rectangular coordinate graph corresponds to the rotating axis ra...

Page 11: ...educing the range resolution of the radar Side lobe suppression is helping to eliminate the problem For a radar pulse signal after compression the narrower pulse main lobe is always accompanied by hig...

Page 12: ...he radar and install the tower It is important to consider any additional space required for crane operation during installation or repair 3 Lightning protection and grounding considerations Provide a...

Page 13: ...ck cabinet 10 Pseudo echo Set the sector blank to the obstacle direction nearby When transmitting in the direction of the obstacle some pseudo echoes will be indicated due to reflections therefore set...

Page 14: ...rge amounts of data Use USB3 0 device type to transfer the data at high speed Recommendations include using a 6TB storage device to save around one half years data compressed UPS Uninterrupted Power S...

Page 15: ...d Band Width Below 6 MHz Type of Emission P0N Q0N V0N Amplifier Solid state module Peak Power 100 W each Horizontal and Vertical Duty Ratio Up to 10 Pulse Width Below 50 s Pulse Repetition Frequency B...

Page 16: ...f signal returns from lan Clutter suppression Interface LAN 1 port Ethernet 1000 Base T Cat5e STP or better Power supply 100 to 240VAC Single Phase 50 60 Hz Power consumption Max 650W include Antenna...

Page 17: ...an EV2216W Z 22 inch 1680x1050 display Incl DVI cable AC Power cord Socket IEC C13 Plug Type B USB LAN Adapter 1000base T Ethernet adapter to USB3 0 Others PC mouse and US keyboard Display Software Fo...

Page 18: ...Coaxial cable 3D 2V SMA P Connector 3 coaxial cables in one combined cable with shield mesh 5m 1 1 Protective tube Tube conduit Inner diameter 28 mm Flexible PV polyvinyl chloride tube IP65 30m 2 1 T...

Page 19: ...be connector for secure water proof of SPU If it needs to extend protective tube by jointing other protective tube it should use weather proof silicon to glue the joint part Note Mostly it will be nec...

Page 20: ...e Exclusive Philips Screwdriver 1 Multiuse Philips Screwdriver 2 Multiuse Slotted Screwdriver 3mm Multiuse Cable Wire cutting scissors Multiuse Flat nippers Multiuse Wire Strippers For electric wiring...

Page 21: ...body especially the eyes Furthermore DO NOT points the antenna at any individuals closer than noted below while transmitting 2 As shown in Installation manual preface warnings Table on page i Radio Fr...

Page 22: ...o use outdoor fiber optic cable to maintain a network speed and stability Refer to the Appendix B for more information 3 5 Precautionary item 1 Use only single phase 100 240VAC local power supply 2 DO...

Page 23: ...rability to support a radar stand 4 The radar stand must be considered not to fall down in strong wind or earthquake 5 Keep strictly checking the safe distance when deciding the height of the radar st...

Page 24: ...g every parts in SPU 4 1 2 Standard radar stand The radar stand needs a structure as shown in Table 4 1 according to its height The height instead of the scaffold is as shown in Figure 4 3 from the wo...

Page 25: ...ossible to do direct ATU from the work plane The scaffold should be able to store for safety in case this height may hit to the people Be aware not to make the scaffold too wide because it will be hea...

Page 26: ...ast one place where the service engineer can go through However do not set it on the cable introduction side of ATU Because there is a cable protection tube The scaffold may not need to fold if there...

Page 27: ...ecommended to be rustproofed iron Scaffolding is recommended to set two different heights that assuming to maintain the inter parts of the radome or a case of removing the upper radome ATU mounting br...

Page 28: ...e Height 1650 mm Standing position of scaffold when lifting up the upper radome Required height when lifting up the upper radome Height is different as Figure 4 6 It recommends 400mm depth if using st...

Page 29: ...radome top high enough to check the position of antenna and rotate the antenna elevation upward by holding the counter weight arm by hand if it is facing horizontally Use some pillows or lumber under...

Page 30: ...Turn too much handles may damage radome base 4 Hold handles to lift up the internal unit Beware the antenna feed arm can easy to damage or break Any deformation of the antenna arm can cause functional...

Page 31: ...internal unit may be damage while lifting Turn the lifting fixture outward by slightly loosening M16 nut And fasten M16 nut before hoisting the ATU Use a soft protective cover to shield radome for pr...

Page 32: ...ble must be in the center between lines If the bubble is on the line or over the line it means the angle is over 0 3 degrees The level adjustment will be completed after all M16 nuts are tightened 500...

Page 33: ...L and 3 radar stand should not have any gap when tightening the 4 nut NG OK Caution Do not tighten 4 nut before 1 nut and 2 Flat washer touch firmly to 3 Radar stand Otherwise the chassis of the anten...

Page 34: ...u hole on radome base with nut insert on upper radome 3 Insert threaded bolts with nut setup 10mm from the end into each thru hole from bottom radome to upper radome nut insert 4 Lift up the upper rad...

Page 35: ...ighten it 2 Lift up the upper radome around 10mm and rotate it counterclockwise 10 degrees 12pcs M10 bolts tip will fit in to the recess holes of upper radome The nut insert can be seen from the thru...

Page 36: ...ten the spring clamp around the center of bolt as shown below 4 Insert each threaded bolt thru holes from the bottom radome to fix them by the nut inserts by hands Figure 4 17 Example using 8 bolts 10...

Page 37: ...per of the flange 7 Check antenna orientation If the antenna is facing at horizontal direction then rotate the antenna to a counter weight down to face up around at 90 degrees upward 8 Lift up the upp...

Page 38: ...asket when fasten the spring clamps Use the spring clamp properly as examples shown below Bad examples Figure 4 20 Space between spring clamp and radome base flange Figure 4 19 Spring clamp is incline...

Page 39: ...ust proof product IP55 when appropriately connecting with the protective tube 1 2 3 Note Tighten up the disuse tube connector with a cap inside to secure waterproof of radome Protecting tube OK NG Do...

Page 40: ...AC Power cable LAN cable Control HDR cable x2 Protective Tube A2 Signal cable Coaxial x3 set 1 Attach cables tightly using cable ties while leaving extra cable length for strain relief at all connecti...

Page 41: ...tween ATU SPU DPU for adjusting the length of protective tube Signal Processing Unit 4 3 1 Fix SPU on the ground or fixed channel base using M10 bolt and nut x4pcs 2 SPU condition at delivery 12xM10 S...

Page 42: ...n to NS COM connector and control cable HDR 26pin to CONT SIG connector 3 Fix with the torque wrench Tighten a connector nut until the head of torque wrench bend a little after connecting 2 signal cab...

Page 43: ...2 2 7A 200 240VAC 8 This air conditioner is for cooling SPU when the temperature goes to the setting degrees or higher The way of checking temperature of setting is shown below 1 Press Set button to i...

Page 44: ...art RainMap operation 2 Press Alt Ctrl click Renew A threshold for adjusting the radar A threshold It will take approx 10 minutes to complete Refer to the Operator s manual for detail Setup Data Proce...

Page 45: ...lator during the sunny weather around noon Refer to section 5 3 Magnetic Compass 5 1 Determine actual radar antenna azimuth Refer to the orientation diagram below using magnetic compass Then enter Azi...

Page 46: ...menu 5 Select 4 on Pulse set in the TX menu Pulse No Range km Reso lution Pulse No Range km Reso lution 1 30 75 5 50 75 150 2 30 150 6 30 300 3 50 150 7 50 300 4 70 150 8 70 300 6 Setup Scan as below...

Page 47: ...e side in the sun direction Right Figure 5 2 is an image of sun path There are some exception area where comes the polar night However refer this image to use the solar positioning simulator 5 3 1 DPU...

Page 48: ...tensity 6 Graph of Solar_Azimuthal_Angle and Solar_ Elevation_Angle will be calculated in the value of the solar altitude and azimuth during observed time 7 It determines the precise antenna position...

Page 49: ...VI Deviation elevation analysis and adjustment VII Confirm that elevation deviation is revised by Sector RHI VIII Turn OFF the Sector Blank to all direction and restore observation setting to the ori...

Page 50: ...4 for instructions Solar radiation spectrum has difficulty to check when sun is blocked by clouds or position of sun is poor during scan 7 Add the average values to the following setup value Go to ste...

Page 51: ...thms of the solar position The accuracy of this algorithm on longitude is 72 degrees of range within 0 0167 degrees However accuracy depends on atmospheric temperature pressure and humidity Therefore...

Page 52: ...46 6 OUTLINE DRAWING 1 Antenna Unit...

Page 53: ...47 2 Signal Processing Unit...

Page 54: ...48 3 Data Processing Unit...

Page 55: ...49 4 Data Processing Unit Power Supply...

Page 56: ...FG MONI CON TB2 1 3 TB1 AC100 240V Black White Green L N E AC IN Network Router 2 RJ45 AC IN DVI DC IN USB USB USB3 0 USB3 0 Keyboard AC IN HDMI MONI CON Silver RJ45 USB3 0 RJ45 RJ45 1 Power strip Bre...

Page 57: ...ents which make up the risk Calculation of the identified risk components Calculation of the total risk R Identification of the tolerable risk Comparison of the risk R with the tolerable value If R x...

Page 58: ...e types of loss relevant to the structure For each type of loss identify and calculate the risk components RA RB RC RM RU RV RW RZ Structure protected Protection needed Calculate new values of risk co...

Page 59: ...ternal systems immediately endanger human life Component related to failure of internal systems caused by LEMP Loss of type L2 and L4 could occur in all cases along with type L1 in the case of structu...

Page 60: ...ts of the structure touching it there and rotating around it Determination of the value of will be performed graphically or mathematically For an isolated rectangular structure with length L width W a...

Page 61: ...lative amount of a particular type of damage for one dangerous event caused by a lightning flash considering both its extent and effects The loss value varies the type of loss considered the weather r...

Page 62: ...weather radar is not protected by existing lightning rods Total risk value is exceeded of the tolerable risk value We ll propose solution for this later protecting the radar by additional lightning r...

Page 63: ...3 LPL Probability for min value Minimum peak current kA Probability for max value Minimum peak current kA Rolling sphere radius m I 0 99 3 0 99 200 20 II 0 97 5 0 98 150 30 III 0 91 10 0 95 100 45 IV...

Page 64: ...g rod to protect the radar but it is insufficient due to some restrictions Now it has to consider how to adapt the LPL by extending the lightning rod As shown in Table A 8 it needs to extend the rod a...

Page 65: ...rod for each LPL is shown in Table A 9 The length will be selected depending on the height limitation therefore it is better to use a longer one Unfortunately in this case it is not enough for protec...

Page 66: ...lightly narrower as 45 Because these specifications were old they did not take height in consideration Also the protection area was too large and therefore not safe enough even within the protection a...

Page 67: ...ection efficiency Rolling sphere method Protection angle method height h Mesh method m Radius m See below I 0 98 20 5 II 0 95 30 10 III 0 9 45 15 IV 0 8 60 20 Applicable only to rolling sphere and mes...

Page 68: ...Domain Name System and it translates the web address into an actual public IP It can be displayed by using the command prompt start run type cmd exe and type ping for the web address At first there i...

Page 69: ...Both sides of connectors have to be the same order Pin Color 1 Yellow White 2 Yellow 3 Green White 4 Blue 5 Blue White 6 Green 7 Brown White 8 Brown Note STP shielded twist pair is required which is s...

Page 70: ...Black Black Brown N White White White or Gray Blue GND FG Green Yellow Red Terminal Green Green Green Yellow Figure D 1 IEC60320 C13 to Type B Figure D 3 DPU PS outlet IEC60320 C14 Notice Use the suit...

Page 71: ...ware Note Operator who wants to access by remote to the host TeamViewer must need the local TeamViewer with the same or newer version Moreover the host software must be installed version 13 or newer 3...

Page 72: ...tcut is on Desktop and Startup 2 RainPlay Shortcut is on Desktop 3 Solar Position Simulator List in Start menu 4 Antenna Position Analysis List in Start menu 5 WR_notice Shortcut is on Desktop 6 WR_tr...

Page 73: ...FURUNO ELECTRIC CO LTD 9 52 Ashihara cho Nishinomiya 662 8580 Japan FURUNO Authorized Distributor Dealer All rights reserved Issued July 2019 Latest issued January 2020...

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