Radar level transmitter antenna microwave pulse is narrow, the downward transmission antenna. Microwave
exposure to the medium surface is reflected back again by the antenna system receives, sends the signal to
the electronic circuit automatically converted into level signals (because the microwave propagation speed,
electromagnetic wave to reach the target and the reflected back to the receiver this time is almost instantaneous).
The characteristics of 26G radar level meter:
Ø Small antenna size, easy to install; Non-contact radar, no wear, no pollution.
Ø Almost no corrosion, bubble effect; almost not affected by water vapor in the atmosphere, the
temperature and pressure changes.
Ø Serious dust environment on the high level meter work has little effect.
Ø A shorter wavelength, the reflection of solid surface inclination is better.
Ø Beam angle is small, the energy is concentrated, can enhance the ability of echo and to avoid interference.
Ø The measuring range is smaller, for a measurement will yield good results.
Ø High signal-to-noise ratio, the level fluctuation state can obtain better performance.
Ø High frequency, measurement of solid and low dielectric constant of the best choice.
Product Introduction
HYRD901 Application： All kinds of corrosive liquid
Measuring Range：10 meters
Process Connection： Thread, Flange
Process Temperature： -40℃~130℃
Process Pressure： -0.1~0.3 MPa
Accuracy： ± 5mm
Protection Grade： IP67
Frequency Range： 26GHz
Supply：2-wire（DC24V）/ 4-wire（DC24V /AC220V）
Signal Output：4... 20mA /HART （2-wire / 4-wire）
RS485/ Modbus
Outer Covering：Aluminum / Plastic / Stainless steel
Explosion-proof Grade：ExiaⅡC T6 Ga/ Exd ⅡC T6 Gb
HYRD902
Application：Slightly corrosive liquid
Measuring Range：30 meters
Process Connection：Thread, Flange
Process Temperature：-40℃~130℃(Standard type)
-40℃~230℃(High temperature type)
Process Pressure：-0.1 ~ 4.0 MPa
Accuracy： ± 3mm
Protection Grade：IP67
Frequency Range： 26GHz
Supply：2-wire（DC24V）/ 4-wire（DC24V /AC220V）
Signal Output：4... 20mA /HART（2-wire / 4-wire）
RS485/ Modbus
Outer Covering：Aluminum / Plastic / Stainless steel
Explosion-proof Grade：ExiaⅡC T6 Ga/ Exd ⅡC T6 Gb
HYRD903
Application：Solid material, Strong dust
easy to crystallize, condensation occasion
Measuring Range： 70 meters
Process Connection：Universal Flange
Process Temperature：-40℃~130℃(Standard type)
-40℃~230℃(High temperature type)
Process Pressure：-0.1~4.0 MPa (Flat flange)
-0.1~0.3MPa (Universal flange)
Protection Grade： IP67
Accuracy： ±15mm
Frequency Range：26GHz
Supply：2-wire（DC24V）/ 4-wire（DC24V /AC220V）
Signal Output：4... 20mA /HART （2-wire / 4-wire）
RS485/ Modbus
Outer Covering：Aluminum / Plastic / Stainless steel
Explosion-proof Grade：ExiaⅡC T6 Ga/ Exd ⅡC T6 Gb
HYRD904
Application：Solid material, Strong dust,
easy to crystallize, condensation occasion
Measuring Range：80 meters
Process Connection：Thread, Universal Flange
Process Temperature：-40℃~130℃(Standard type)
-40℃~230℃(High temperature type)
Process Pressure：-0.1 ~ 0.3 MPa
Measurement Accuracy： ±15mm
Protection Grade：IP67
Frequency Range： 26GHz
Supply：2-wire（DC24V）/ 4-wire（DC24V /AC220V） Signal Output：4... 20mA / HART (2-wire / 4-wire )
RS485/ Modbus
Outer Covering：Aluminum / Plastic / Stainless steel
Explosion-proof Grade：ExiaⅡC T6 Ga /Exd ⅡC T6 Gb
HYRD905
Application：Solid particles, Powder
Measuring Range：30 meters
Process Connection：Thread, Flange
Process Temperature：-40℃~130℃(Standard type)
-40℃~230℃(High temperature type)
Process Pressure：-0.1 ~ 4.0 MPa (Flat flange)
-0.1 ~ 0.3 MPa (Universal Flange)
Accuracy：±15mm
Protection Grade：IP67
Frequency Range：26GHz
Supply：2-wire（DC24V）/ 4-wire（DC24V /AC220V）
Signal Output：4... 20mA /HART (2-wire / 4-wire )
RS485/ Modbus
Outer Covering：Aluminum / Plastic / Stainless steel
Explosion-proof Grade：Exia ⅡC T6 Ga /Exd ⅡC T6 Gb
HYRD906
Application：Hygienic liquid storage,
Corrosive container
Measuring Range：20 meters
Process Connection：Flange
Medium Temperature：-40℃~100℃
Process Pressure：-0.1~1.6 MPa
Accuracy：± 3mm
Protection Grade：IP67
Frequency Range：26GHz
Supply：2-wire（DC24V）/ 4-wire（DC24V /AC220V）
Signal Output：4... 20mA/HART (2-wire / 4-wire )
RS485/ Modbus
Outer Covering：Aluminum / Plastic / Stainless steel
Explosion-proof Grade：Exia ⅡC T6 Ga /Exd ⅡC T6 Gb
Installation Size
HYRD901
HYRD902
HYRD903
HYRD904
HYRD905
HYRD906
Technical Parameters
Process Connection Thread G1½″A / Thread 1½″ NPT / Flange
Antenna Material Stainless Steel / PTFE
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
Two wire system
The standard type (16 ~ 26) V DC
Intrinsically safe (21.6 ~ 26.4) V DC
Power dissipation max 22.5mA / 1W
(22.8 ~ 26.4) V DC 2-wire system
(198 ~242)V AC 4-wire system / 110V AC 4-wire system
The cable parameters
Cable entrance / plug 1 M20xl.5 cable entrance
1 blind plug
Terminal Conductor cross section 2.5mm²
Output parameters
The output signal (4 ~ 20) mA/RS485
Communication protocol 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
901 10 meters （Liquid type）
902 30 meters （Liquid type）
902T 20 meters （Liquid type）
903 70 meters （Solid type ）
904 80 meters （Solid type ）
905 30 meters （Solid type ）
906 20 meters （Liquid type）
Microwave frequency 26GHz
Communication interface HART communication protocol
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 (-40～80)℃
Process temperature (the temperature of the antenna part)
901 (-40～130)℃
902/902T/903/904/905 (-40～130)℃ Standard type / (-40～230)℃ High temperature type
906 (-40～100)℃
Pressure Max.4MPa
Seismic Mechanical vibration l0m/s², (10 ~ 150) Hz
Previous: Guided Wave Radar Level Meter
