Home  >  PRODUCT  >  Level Instrument  >  Radar Level Meter  >  26GHz Radar Level Meter  > 

Kaidi KD-908S Rivers, lakes, shoals Cost-Effective High Frequency Radar Level Meter High Quality Silo Radar Level Meter

这里可以自定义设置
Kaidi KD-908S Rivers, lakes, shoals Cost-Effective High Frequency Radar Level Meter High Quality Silo Radar Level Meter
B站不支持收货地址
B站不支持库存规格
Application:
Water (Rivers, lakes, shoals)
Measuring Range:
0~30 meters
Protection Grade:
IP68
Accuracy:
±3mm
Frequency:
26GHz
Process Pressure:
-0.1~0.3MPa
Process Temperature:
-40~80℃
Process Connection:
Gantry / locking flange from DN 80/ 3
Outer Covering:
Cast aluminum / plastic
Cable specifications
M20 x 1.5
Power supply
DC(6-24v)/ four wire DC24V/ two wires
Signal output
Modbus-rs485 protocol (6~24vDC) 4~20ma/hart two-wire(24VDC)
MOQ
1 SET
Payments:
TT, Paypal, Credit card, Western union
Shipping ways:
Express(DHL,Fedex,TNT,EMS,UPS)/Air/Sea
参数暂无数据
多属性暂无数据
B站不支持优惠卷

Add success, do you want to check your shopping cart?

暂无分享
B站不支持产品保障

1.  Product  Overview

Principle

The radar water level antenna emits extremely narrow microwave pulses that travel at the speed of light, and part of the energy is reflected back when it encounters the surface of the measured medium and is received by the same antenna. The time interval between the transmitted pulse and the received pulse is proportional to the distance from the antenna to the surface of the measuring medium. Due to the extremely high propagation speed of electromagnetic waves, the time interval between the transmitted pulse and the received pulse is very small (nanosecond order) and it is difficult to confirm. The high-frequency radar water level gauge uses a special demodulation technology that can accurately identify the transmitted pulse and the received pulse The distance between the antenna and the surface of the measured medium can be further calculated.


    

A   Range Set

B   Low Adjustment                                                                                                   

C    High Adjustment




Datum measurement: Screw thread bottom or the sealing surface of the flange

Note: Make sure the radar level meter the highest level cannot enter the measuring blind area.


Application characteristics

The radar water level gauge uses a 26GHz transmitting frequency and has: 

Ø Small beam angle, concentrated energy, stronger anti-interference ability, greatly improved measurement accuracy

Ø The antenna is small in size, easy to install, and easy to add dust cover and other antenna protection devices

Ø Lighter weight, about 1KG, easy to install

Ø The maximum measurement range can reach 70 meters, which can cover water level measurement such as large reservoirs

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.



2. Product  Introduction 

908S

Application: rivers, lakes, shallows

Measuring range: 0~30 meters

Process connection: gantry frame,

Locking flange from DN 80/ 3"

Process temperature: -40~80℃

Process pressure: (-0.1~0.3) MPa

Precision: ±5mm

Frequency: 26GHz

Degree of protection: IP67 / IP65

Power supply: DC (6-24V) / four wires

                         DC 24V / two wires

Signal output: Modbus-RS485 protocol (6~24V DC)

                        4~20mA/Hart two wires(24VDC)

On-site display: optional

Shell: cast aluminum / plastic


3.Instrument Installation

 Installation Precautions:

Please pay attention to the following items to ensure that the meter can be installed correctly:

Please reserve enough space for installation.

Please avoid installation situations with strong vibration.


Illustration and installation position

                                                                                                                                   Radar and bracket installation diagram (1) 

                                                                                                                                   Radar and bracket installation diagram (2)



Note: When a radar antenna emits microwave pulses, it has a certain emission angle. There must be no obstacles from the lower edge of the antenna to the surface of the measured medium and in the area radiated by the emitted microwave beam. Therefore, shielding facilities should be avoided as much as possible during installation, and “false echo learning” must be carried out when necessary. When installing the instrument, also pay attention: the highest liquid level must not enter the blind area of the measurement; the instrument must be connected to the ground, and lightning protection measures shall be added; outdoor sun protection and rain protection measures shall be taken.



4. 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.

Modbus - RS485

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


  • Connection  mode

Ø  24V  two wire wiring diagram as follows:

 Ø  The Modbus-RS485 wiring diagram as follows:


 Safety  instructions:

Please comply with the requirements of local electrical installation regulations!

Please abide by the local regulations on personnel health and safety. All operations on the electrical components of the instrument must be completed by properly trained professionals.

Please check the nameplate of the meter to ensure that the product specifications meet your requirements. Please make sure that the power supply voltage is consistent with the requirements on the nameplate of the meter.


 Protection  grade:

This meter fully meets the requirements of protection class IP66/IP67, please ensure the waterproof characteristics of the cable seal.  As shown below:

     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 the①

     Tighten the cable seal head, see the②

     Please electrical interface will not use blind plug tight, see the③



5. Instrument Commissioning

There are two kinds of debugging method:

1) Display / Button (With split display, you need to debug on the split)

2) Debug through computer software  

 

Display / Button: 

Debug the meter through the 4 buttons on the display screen. The debugging menu has four languages to choose from. The measured value can be read very clearly through the glass window.

Display / Button    

                                                                                                                     ① Liquid crystal display(LCD)   ② Adjust by button

       

 PC software debugging:


        




Connected to PC by HART

①USB interface      ②  Radar level meter    ③ HART converter    ④  250Ω resistor
















 Connected to PC by RS485

USB interface     Radar level meter     ③RS485 converter


6. Structure Size   (Unit: mm)

The outer shell

Ø Cast aluminum shell

Plastic shell

 

Product  size:

With split display, split size:

Gantry frame size:

7. Technical Parameters

General data

The outer shell material 

Cast aluminum, stainless steel, plastic 

The seal between the shell and cover

Silicone rubber

Casing window

Polycarbonate

The ground terminal 

Stainless steel


The power supply

Two wire system

DC 24V /  4~20mA   / Power dissipation  0.75W

Four wire system

(6~24) V DC / Modbus-RS485 / Power dissipation   90mW

Allowable ripple

- <100Hz                                   Uss<lV

- (100~100K) Hz                      Uss<l0mV


The cable parameters

Cable entrance / plug

1  M20xl.5 cable entrance

Terminal

Conductor cross section 1.0mm²


Output parameters

The output signal

(4 ~ 20) mA / Modbus-RS485

Communication protocol

Modbus / HART

Resolution 

1.6μA

Fault signal

Constant current output; 20. 5mA;22mA;3.9mA

The integral time 

(0 ~ 36) s, adjustable


Characteristic Parameters
Blind area

the ends of the antenna

Maximum distance measuremen

30 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

1mm

Working storage and transportation temperature

 (-40~80) 

Process temperature (the temperature of the antenna part)

 (-20~100)℃

Pressure

Normal atmospheric pressure

Seismic

Vibration frequency (10~150) Hz,

maximum vibration acceleration l0m/s²


8.   Meter  Linearity

908S

The launch angle depends on the antenna size

-Φ76mm                        12°

Precision                      See chart

9. Product  Model  Selection

908S

License

P standard (non-explosion-proof)

Process connection / material

N gantry frame

M PP flange installation

Y special customization

Antenna type/material

A Horn antenna Φ76mm/PP

Y special customization

Seal / process temperature

 V Ordinary seal/(-40~80) 

Electronic unit

V Modbus-RS485 / 6~24V DC four-wire system

W (4~20) mA / 24V DC two-wire system

Enclosure rating

L aluminum/IP67

G plastic /IP65

Cable entry

M      M20 × l. 5

N       ½  NPT

The scene shows/programming

A     With

X      With



Product Message
社媒暂无评论
Chat Online 编辑模式下无法使用
Leave Your Message inputting...