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kaidi KD-80X 6GHzIntelligentRadarLevelMeter

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kaidi KD-80X 6GHzIntelligentRadarLevelMeter
6GHz Intelligent Radar Level Meter
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Application:
Liquids, corrosive liquids,Volatile liquids,Solids,High temperature conditions
Measuring Range:
15- 35m
Frequency:
6GHz
Process Pressure:
(-0.1~4)Mpa
Process Temperature:
-40 ℃ ~ 130 ℃ (standard type) / -40 ℃ ~ 250 ℃ (high temperature type)
Process Connection:
Flange (optional)/Thread
Explosion proof certification:
Exia IIC T6 Ga/ Exd IIC T6 Gb
Outer Covering:
Aluminum/plastic/stainless steel
Power supply
Two-wire (DC24V) / four-wire (DC24V / AC220V)
Signal output
(4 ~ 20) mA/HART
MOQ
1 SET
Payments:
TT, Paypal, Credit card, Western union
Shipping ways:
Express(DHL,Fedex,TNT,EMS,UPS)/Air/Sea
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I. The Measurement Principle:

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Microwave antenna to receive the reflected pulse and transmitted to the electronic circuit, a microprocessor to signal processing, to identify the micro pulse generated on the material surface echo. Echo recognition is completed by the pulse system, the accuracy can reach millimeter level. From the material surface distance between D and T pulse is proportional to the time travel:

D=C×T/2

Where C is the speed of light

Because of the air tank is a known distance E, L:

L=E-D

 

By setting the empty tank height E (= zero), the full height of F (= full scale) and some application parameters, application parameters automatically makes the instrument to measure the environment. 4 - 20mA with a corresponding output.

l  Application:

6GHz radar level gauge is suitable for liquid, paste, granule and block material level and non-contact measurement, suitable for changes in temperature, pressure big; there is an inert gas and volatile.

The measurement method of microwave pulse, can work normally in the industrial frequency band range. The beam energy is low, can be installed on all kinds of metal, non-metallic container or pipe, no harm to human body and environment.


II. Product  Introduction


  • 801

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Suitable for Medium: Liquid,   slightly corrosive liquid
Explosion-proof Grade: Exia IIC T6 Ga/ Exd   IIC T6 Gb 
Measuring Range: 20m 
Aerials: The Rod Antenna  ( PP/PTFE ) 
Frequency: 6 GHz
Temperature: (-40 ~ 130)
Measurement Accuracy:  ±10mm 
Process Pressure: (-0.1 ~ 0.3) Mpa
The signal Output: (4 ~ 20) mA/HART 
The Scene Display: Four LCD /Can be   programmed
Power Source: Two-wire (DC24V)   /Four-wire(DC24V / AC220V)
Repeatability: ± 1mm 
Outer Covering: Aluminum /Plastic /   Stainless steel
Connection: Flange (optional) /   Thread
  • 802

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Suitable for Medium: Liquid,   especially for corrosive liquid
Explosion-proof Grade: Exia IIC T6 Ga/ Exd   IIC T6 Gb 
Measuring Range: 20m 
Aerials: The Rod Antenna   (PTFE)
Frequency: 6 GHz
Temperature: -40℃~130℃(Standard type)/ -40℃~180℃(High temperature type)
Measurement Accuracy:  ±10mm 
Process Pressure: (-0.1 ~ 1.6) Mpa
The signal Output: (4 ~ 20) mA/HART 
The Scene Display: Four LCD /Can be   programmed
Power Source: Two-wire (DC24V)   /Four-wire(DC24V / AC220V)
Repeatability: ± 1mm 
Outer Covering: Aluminum /Plastic /   Stainless steel
Connection: With PTFE plate   flange
  • 803

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Suitable for Medium: Liquid,   especially with pressure and Volatile Liquid
Explosion-proof Grade: Exia IIC T6 Ga/ Exd   IIC T6 Gb 
Measuring Range: 35m
Aerials: The Horn Antenna
Frequency: 6 GHz
Temperature: -40℃~130℃(Standard type)/ -40℃~250℃(High temperature type)
Measurement Accuracy:  ±10mm 
Process Pressure: (-0.1 ~ 4) Mpa
The signal Output: (4 ~ 20) mA/HART 
The Scene Display: Four LCD /Can be   programmed
Power Source: Two-wire (DC24V)   /Four-wire(DC24V / AC220V)
Repeatability: ± 1mm 
Outer Covering: Aluminum /Plastic /   Stainless steel
Connection: Flange (optional) /   Thread
  • 804


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Suitable for Medium: Solid particles   or block material, and it is not suitable for solid powder
Explosion-proof Grade: Exia IIC T6 Ga/ Exd   IIC T6 Gb 
Measuring Range: 35m
Aerials: The Horn Antenna
Frequency: 6 GHz
Temperature: -40℃~130℃(Standard type)/ -40℃~250℃(High temperature type)
Measurement Accuracy:  ±20mm 
Process Pressure: (-0.1 ~ 0.3) Mpa
The signal Output: (4 ~ 20) mA/HART 
The Scene Display: Four LCD /Can be   programmed
Power Source: Two-wire (DC24V)   /Four-wire(DC24V / AC220V)
Repeatability: ± 1mm 
Outer Covering: Aluminum /Plastic /   Stainless steel
Connection: Universal joint   flange
  • 805

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Suitable for Medium: Liquid,   especially suitable for low dielectric constant, sticky, with mixing liquid
Explosion-proof Grade: Exia IIC T6 Ga/ Exd   IIC T6 Gb 
Measuring Range: 20m
Aerials: The Horn Antenna
Frequency: 6 GHz
Temperature: -40℃~130℃(Standard type)/ -40℃~250℃(High temperature type)
Measurement Accuracy:  ±10mm 
Process Pressure: (-0.1 ~ 4) Mpa
The signal Output: (4 ~ 20) mA/HART 
The Scene Display: Four LCD /Can be   programmed
Power Source: Two-wire (DC24V)   /Four-wire(DC24V / AC220V)
Repeatability: ± 1mm 
Outer Covering: Aluminum /Plastic /   Stainless steel
Connection: Flange
  • 806

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Suitable for Medium: Solid,   especially suitable for high temperature conditions
Explosion-proof Grade: Exia IIC T6 Ga/ Exd   IIC T6 Gb 
Measuring Range: 15m
Aerials: The Horn Antenna
Frequency: 6 GHz
Temperature: -40℃~400℃
Measurement Accuracy:  ±20mm 
Process Pressure: (-0.1 ~ 0.3) Mpa
The signal Output: (4 ~ 20) mA/HART 
The Scene Display: Four LCD /Can be   programmed
Power Source: Two-wire (DC24V)   /Four-wire(DC24V / AC220V)
Repeatability: ± 1mm 
Outer Covering: Aluminum /Plastic /   Stainless steel
Connection: Flange



 III. Installation Guide

  • Installation instructions:

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       Ø  The recommended position (2), the outer wall of tank wall to install pipe shall meet the following from the tank wall best distance to tank diameter of 1/4 or 1/6, the minimum distance from the installation of tank wall as the measurement range of 1/10.

Ø  For example: liquid level of storage tank 10m, and the tank wall install the minimum distance of 1m.

Ø  Cannot be installed above the feeding port (4).

Ø  Cannot be installed in the central position (3), if installed in the central, yield multiple false echo, clutter echo will lead to real signal loss.

Ø  If you can't keep the instrument and the tank wall of the tank wall distance, the medium will adhesion caused by false echo, when debugging instrument should be false echo storage.


l  The top conical tank level, can be installed at the top of the tank is intermediate, can guarantee the measurement to the conical bottom.

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A feed antenna to the vertical alignment surface. If the surface is rough, stack angle must be used to adjust the angle of Universal joint flange of the antenna to the alignment surface.

(Due to the solid surface tilt will cause the echo attenuation, even Loss of signal.)


  • Tank installation instructions:

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Ø  In the signal beam, should avoid the following installation: 

Such as: (1) the limit switch, temperature sensor. 

Ø  Symmetric devices such as (2): vacuum ring, a heating coil, Baffle plate etc.

Ø  If the tank (1) (2) interference object, should be guided wave tube measurement.


Best installation options:

Ø  Antenna size: larger antenna, beam angle smaller, interfering echoes will be weaker.

Ø  Antenna adjustment: the antenna to adjust to the best measurement position.

Ø  Guided wave radar take over: The installation of the wave guide is used to avoid disturbing the echo.



  • Tank installation (801, 802)


A standard installation

Ø  The radar antenna cannot tilt to the tank wall.

Ø  In order to minimize temperature effect, at the junction of butt joint flange must use the spring washer.

Ø  The rod antenna launching point must reach out to install pipe.

Ø  The vertical placement of the rod antenna beam direction, don't let the tank wall.

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Install short long antenna extension tube


Ø  When the horn length is less than the installation of tube length, tube using antenna

Ø  If the diameter of the horn tube diameter greater than the installation, you will need to increase meter elevation, extension tube. The antenna and the extension tube needs to be installed from inside the container. Select the extension tube makes the instrument at least elevation 100mm.

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  • Measurement of Wave Guide Tube

    If there is an obstacle, such as a ladder, limit switches, heating equipment, such as a stent within the range of the microwave beam emitted radiation will lead to measurement errors. If affected, the need to add another wave guide measured.

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         Then measure the wave guide tube (or Bypass pipe) installed inside the container to avoid obstacles, foam, liquid surface fluctuations and large impact on the measurement.

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                Note: 

               Isobaric pore diameter 5 ~ 10mm.

                      Wave guide diameter of at least 50mm, and the inner walls must be smooth.

                    Measuring only good mobility media, viscous media cannot be measured with a wave guide.


  • The bypass pipe installation

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Ø  If the sensor is installed in the bypass pipe, need to install the communication part is higher than that of the by-pass pipe and the upper part of the container  500mm; by pass pipe at the bottom to be lower than the connecting part of the by-pass pipe and the bottom of the container  300mm.


Radar installation site display unit and connected component parallel.

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Ø  If the dielectric constant of the medium small (< 4), part of radar signal can penetrate the dielectric constant dielectric. Echo signal when the tank bottom reflection signals when compared to the dielectric reflection of strong, at this time, measurement error. In this case, can be at the bottom of the tank to install refraction board will signal refraction.


  • Typical installation errors

Ø  Conical tank cannot be installed above the feed port. 

Note: outdoor installation should adopt sunshade. 

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Ø  The instrument cannot be installed in the arched or domed roof intermediate. In addition to produce indirect echo is also affected by the echoes. Multiple echo can be larger than the real value of signal echo, because through the top can concentrate multiple echo. So cannot be installed in a central location. 


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Ø  There are obstacles affecting measurement needed reflection plate.

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  • Below is a schematic diagram of the echo signal:

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IV. Dimensions of Instruments

  • The rod antenna radar size (unit: mm)

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  • The rod antenna radar size (unit: mm)

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  • Horn antenna size (unit: mm)

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  • Horn size (unit: mm)

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  • Flange Selection (unit: mm)

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V. Measurement Conditions


Matters needing attention:


l  The general measurement range is calculated starting from the bottom of the tank, under special circumstances, if the tank bottom is a concave or conical, when the level below this point cannot measure.  

l  Low dielectric constant in a low level, the bottom of the tank can be seen, this time in order to ensure the measuring precision, suggestions will be zero shift.   

l  Measurement of antenna theory to the position Of the tip is possible, but taking into account the effect of corrosion and adhesion, the measuring range of the tip distance of  100mm.

l  For overflow protection, can define a safe distance and dead area.

l  The minimum measurement range has relation with antenna.

l  Different concentration, foam can absorb microwave, also can be reflected, but under certain conditions can be measured. 

l  When no echo signal, the output current is 22mA.

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VI. The Electrical Connection


  • The power supply voltage:

(4~20)mA/HART (Two wire system)       The power supply and the output current signal sharing a two core shield cable. The supply voltage range see technical data. For intrinsically safe type must be a safety barrier between the power supply and the instrument.

(4~20)mA/HART(Four wire system)        Separate power supply and the current signal, respectively using a two-core shielded cable. The supply voltage range see technical data.

RS485 / Modbus                                      Power supply and Modbus signal line are separated, respectively using a two-core shielded cable, the power supply voltage range see technical data.


  • Connection mode:


Ø  24V two wire wiring diagram as follows:


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Ø  220V four wire connection is as below:


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Ø  24V RS485/Modbus wiring diagram as follows:


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  • Explosion Proof Connection

    The intrinsic safety version sensors (Exia IIc T6) use Alu-die casting housing and filling Silicone rubber sealants internal structure aimed to prevent sparks resulted from circuit failure from leaking out. It is applicable for the continuous level measurement of flammable medium under Exia IIc T6.

    A safety barrier FBS-2 must be used together with the intrinsic safety instrument. It is an associated device to this product for the power supply of this product. The main specification is intrinsic safety: Exia IIC, voltage of power supply: 24V DC±5%, short-circuit current: 135mA, operating current: 4...20mA.

    All cables must be shielded. The max length is 500m for the cable from the barrier to the sensor. Stray capacitor0.1μF/Km, stray inductance 1mH/Km. Instrument must be connected to the ground potential. Any unapproved associated device is not allowed to be used.

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  • Safety instructions:


Ø  Please observe the local electrical code requirements!

Ø  Please comply with local requirements for personnel health and safety regulations.

All electrical components of instrument operation must be completed by the formal training of professionals.

Ø  Please check the instrument nameplate to provide product specifications meet your requirements. Please make sure that the power supply voltage and instrument nameplate on the requirements.

  • Protection grade:

This instrument meets the protection class IP66/67 requirements, please ensure the waterproof cable sealing head. The following diagram:

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How to install to meet the requirements of IP67:

Please make sure that the sealing head is not damaged.

Please make sure that the cable is not damaged.

Please make sure that the cable for use with electrical connection specification.

Cable into the electrical interface before its curved downward, ensure that the water will not flow into the shell, see the

Tighten the cable seal head, see the

Please electrical interface will not use blind plug tight, see the


VII. Programming and Debugging


  • There are three kinds of debugging method:

    1)     Display / Keyboard  

    2)     Host debugging  

    3)     HART handheld programmer 

  • Display / Keyboard:

Please debug the instrumentation by four buttons on the display screen. There are three debug menu languages optional. After debugging is generally used only for display, through the glass window can read measured value very clearly.


Display / Keyboard


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① Liquid crystal display(LCD)

 

② The key


  • PC debugging:


Connected to PC by HART


      RS232 interface or USB interface                     

      Radar level meter

      HART adapter

       4     250 Ω resistor

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  • HART handheld programmer:


      HART handheld programmer

      Radar level meter

      250 Ω resistor

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VIII. Technical   Parameters


General Data


Materials

Antenna                                                 PTFE, PP

Shell                                                      Aluminum, plastic, Anti-static PP, Stainless steel 316

The seal housing and the housing        Silicone Rubber

Shell window                                         Polycarbonate

Ground terminal                                    Stainless steel

Process connection 

801                                                      G1½″A Thread & 1½″NPT Thread / Flange (optional)

802                                                      With PTFE plate flange

803                                                      Stainless Steel Flanges

804                                                      Stainless Steel Flanges

805                                                  Stainless Steel Flanges

806                                                  Stainless Steel Flanges


Supply voltage

Two-wire       

Standard                                         (1626)V DC

Intrinsically Safe                              (21.626.4)V DC

Power Consumption                        max.   22.5mA

Allowable ripple

- <100Hz                                         Uss < lV

- (100100K)Hz                             Uss < l0mV  


Flameproof

(22.8 ~ 26.4) V DC       2-wire system

(198 ~242)V AC   4-wire system / 110V AC    4-wire system

Power Consumption                        max.  1VA1W


 Cable parameters     

                     Cable entry / plug                           1 M20xl.5 cable entry (cable diameter 5 ~ 9mm)

                                                                            1 blind blocking M20xl.5

                    Spring terminals                               For wire cross-section 2.5mm²

 Output parameters

The output signal                             (420)mA / HART

Resolution                                       1.6μA

Fault signal                                      Current output unchanged20.5mA22mA3.9mA

Two-wire load resistor                     See below

Four-wire resistive load                   The maximum 500Ω

                    Integration time                                (0 ~36) s, adjustable

Two-wire load resistor map

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 Characteristic parameters

Blind                                         Antenna end

The maximum measuring distance  

801                                           20mLiquid

802                                           20mLiquid

803                                           35m

804                                           35m

805                                           20m

806                                           15m

Measurement interval               About 1s (depending on the parameter settings)

Adjustment time                        About 1s (depending on the parameter settings)

Resolution                                 1mm

           Accuracy                                   10mm &0.1%  (See schematic below precision)


Accuracy schematic


          801,802 Accuracy

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          803 Accuracy

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Working storage and transport temperature             (-4080)

Process temperature (the temperature of the antenna portion) 

801                    (-40130)

802                    (-40130) Standard type / (-40180)  High temperature type  

803                    (-40130) Standard type / (-40250)  High temperature type

804                    (-40130) Standard type / (-40250)  High temperature type

805                    (-40130) Standard type / (-40250)  High temperature type

806                     (-40400)

Relative humidity                               95% 

Tank pressure                                   Max.  4MPa

           Seismic                                             Mechanical shockl0m/s² , (10150)Hz



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