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Kaidi-R908/908 26GHz Radar Level Meter

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Kaidi-R908/908 26GHz Radar Level Meter
26GHz Radar Level Meter
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5-10 days
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1 SET
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Characteristics of water conservancy industry application:

Ø  Radar level meter adopts a recommended industry emission frequency of 26GHz, so it has beam angle is small, concentrated energy, has stronger anti-interference ability and greatly improves the precision and reliability of measurement.

Ø  Small antenna size, easy to install and dustproof cover antenna protection device.

Ø  Light weight about 1KG, easy to install.

Ø  The measurement range of up to 70 meters, covering a large reservoir water level measurement.

Ø  With a variety of output circuit interface and data acquisition system.

Ø  The pulse working mode, radar level meter transmit power is very low, no harm to human body and environment.

908 :

ApplicationRivers, Lakes, Shoal
Measuring   Range: 30 meters
Process   ConnectionThread G1½ A /Frame /Flange
Process  Temperature -40 ~ 100
Process   Pressure:Normal pressure
Accuracy ± 3mm
Protection   GradeIP67 / IP65
Frequency   Range:26 GHz
The signal   Output:  RS485 / Modbus  ( 6~24V  DC) 4~20mA / Hart  Two  wire ( 24V DC) 
Power Supply   : (6 - 24V)   DC  / Four-wire    24V DC / Two  wire
The Scene   DisplayOptional
Outer Covering   : Aluminum /Plastic   /Stainless steel 
Outer   Covering: Aluminum /   Plastic /Single chamber



909 :

ApplicationRivers, Lakes, Shoal
Measuring   Range: 70 meters
Process   ConnectionThread G1½ A /Frame /Flange
Process  Temperature -40 ~ 100
Process   Pressure:Normal pressure
Accuracy ± 10mm
Protection   GradeIP67 / IP65
Frequency   Range:26 GHz
The signal   Output:  RS485 / Modbus  ( 6~24V  DC) 4~20mA / Hart  Two  wire ( 24V DC) 
Power Supply   : (6 - 24V)   DC  / Four-wire    24V DC / Two  wire
The Scene   DisplayOptional
Outer Covering   : Aluminum /Plastic   /Stainless steel 
Outer   Covering: Aluminum /   Plastic /Single chamber

1611813813.jpg


1.   Installation

l  Preparation before installation:

Ø  Please pay attention to the following matters, to ensure that the instrument can be installed correctly:

Ø  Please reserve enough space for installation.

Ø  Please avoid installing occasions strong vibration.

l  Illustration and installation position

Note: Radar antenna microwave pulse, have a certain emission angle. From the lower end of the antenna to be measured between the surface of the medium, and a transmitter shall be no obstruction in the region of the microwave beam radiation. Therefore, the installation should be avoided as far as possible shelter facilities, shall be carried out "false echo study" when necessary. Also note that when installing devices: the highest level measured shall enter blind; instrument must be connected to the earth, increasing the lightning protection measures; outdoor shade should be taken, rain measures.1611814741(1).png

Note: Radar antenna microwave pulse, have a certain emission angle. From the lower end of the antenna to be measured between the surface of the medium, and a transmitter shall be no obstruction in the region of the microwave beam radiation. Therefore, the installation should be avoided as far as possible shelter facilities, shall be carried out "false echo study" when necessary. Also note that when installing devices: the highest level measured shall enter blind; instrument must be connected to the earth, increasing the lightning protection measures; outdoor shade should be taken, rain measures.


2. The Electrical  Connection

Power Supply voltage


RS485 /   Modbuspower supply   and Modbus signal lines separated respectively using a shielded cable, the   power supply voltage range of see technical data.
(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.



Connection mode

l  The RS485/Modbus wiring diagram as follows:

1611814954(1).png

l  24V two wire wiring diagram as follows:

1611815011(1).png

Protection grade

This instrument meets the protection grade IP66/67 requirements,  please ensure the waterproof cable sealing head.

1611815093(1).png


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


3.   Structure  Size  (Unit: mm)

lThe Outer Covering:

1611816566(1).png

l  Appearance  size:

908 : 

1611816646(1).png

909 :

1611816723(1).png

 Connection 

²  Standard bracket

²  With rain cover bracket

²  Thread G1½ "A connection

²  G1½ mounting base connection

1611816851(1).png

4.   Technical   Parameters

The outer shell  
The seal between the shell and the shell cover                 Silicone rubber
Casing   window                                                                   Polycarbonate
The ground   terminal                                                           Stainless steel
The power supply voltage
Four wire   system(624) V DC / RS485    Modbus  / Power dissipation   90mW
Two wire   systemDC 24V /  4~20mA     / Power dissipation  0.75W
The cable parameters 
Cable entrance   / plug           1    M20xl.5 cable entrance

 1    blind plug
Terminal                               Conductor cross section1.0mm²  
Output parameters
The output signal                              RS485  Modbus    (6~24V  DC)
4~20mA /   Hart  Two  wire ( 24V DC)
Communication   protocol                  Modbus  control / HART
Resolution                                        1.6μA
Fault   signal                                       Constant current   output; 20. 5mA

22mA 

3.9mA
The integral   time                              (0 ~ 36) s,   adjustable
Blind   area                                 the ends of the   antenna
The maximum distance measurement      
90830 meters  
90970 meters  
 Microwave frequency                                              26GHz
The   measurement interval       about 1 second   (depending on the parameter settings)
Adjust the   time                         about 1 second   (depending on the parameter settings)
Display   resolution                   1 mm
Working storage and transportation temperature                          (-4070) 
Process temperature (the temperature of the antenna part   (-40100)
Pressure                                    Normal atmospheric   pressure
Seismic                                       Mechanical vibration   l0m/s², (10 ~ 150) Hz

Meter  Linearity

908 :


Emission angle                 Depending on the size of the antenna

-76mm                          12°

-96mm                          18°

Precision                          See chart


1611817551(1).png

909 :


Emission angle                 Depending on the size of the antenna

-76mm                          12°

-96mm                          18°

-121mm                         6°

Precision                          See chart

1611817619(1).png

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