Solid and Liquid 80GHz Radar Level Transmitters Fmw21 RS485 Modbus 120m

• Customization: Available
• Principle: Radar Level
• Range: 0-150m
• Model NO.: FMW21
• Measurement Accuracy: ±5mm
• Accuracy: 0.1%
• Kind: Radar
• Structure: All in One
• Warranty: 1 Year
• Certification: CE, ISO Sil Ex
• Material: SS304
• Process Temperature: -40~250℃
• Output Signal: 4-20mA
• Application: Liquid or Solid
• Power Supply: 24VDC/220VAC
• Protocol: Hart/RS485
• Product Name: 80GHz Radar Level Transmitters
• Transport Package: Carton or Wooden
• Origin: China
• HS Code: 9026100000
• Production Capacity: 800PC/Month
• Package Size: 40.00cm * 30.00cm * 27.00cm
• Package Gross Weight: 8.000kg

Product Description

Solid and Liquid 80GHz Radar Level Transmitters Fmw21 RS485 Modbus 120m
 

Product Description

Principle

   The general principle of the FM continuous wave radar level gauge is that the radar emits electromagnetic
waves on the top of the tank, and the electromagnetic waves are received by the radar after being reflected
by the medium. The frequency difference δf between the received signal and the transmitted signal is
proportional to the distance R from the surface of the medium: R=C (speed)*δf (frequency difference)/2/K
(frequency modulation slope). Because the speed of light C and the frequency modulation slope K are
known, the frequency difference δf can be estimated to obtain the distance R from the radar installation
position to the material surface, and then through the known total height of the tank, subtract the spatial
distance from the radar to the material surface (referred to as Empty height) to get the height of the material
level.

Application

Liquid:
Crude oil, light oil, natural gas, methanol, ethanol, ammonia water, benzene, polystyrene, esters, water
vapor, liquid carbon dioxide, paint, turpentine, chemical water, oil level measurement in oil depots,
chemical liquid storage tanks in chemical plants

Solid
Slurry, raw coal bunker, pulverized coal silo, fly ash silo, limestone, coking pulverized coal, cold return ore,
raw material silo, powder silo, coal ash silo, stone silo, raw meal silo, cement silo, slag storage silo

Characteristic

1. Accuracy of up to ±1mm-±3mm, Blind area of 0.1m.
2. The smaller antenna size
3. Smaller launch angle, stronger echo signal, higher reliability.
4. Used for adhesion and condensation.
5. Measurement of low dielectric constant.
6.Radar reaction time is less than 1S.

Product Parameters

FMW21

License

P    Standard  (Non-explosion-proof) 
I     Intrinsically safe(Exia IIC T6 Ga)
D    Intrinsically safe+Flameproof(Exd ia IIC T6 Gb)                                                           

Process Connection / Material

            1    G3.5A Thread
2     Flange≥DN80              
X     Special customization

Flange option / material

Specification / Code / Material	PP	PTFE	Stainless steel304+PTFE	Stainless steel316L+PTFE
DN80	P4	F4	G4	S4
DN100	P5	F5	G5	S5
DN125	P6	F6	G6	S6
DN150	P7	F7	G7	S7
DN200	P8	F8	G8	S8

Antenna Type / Material

A  76mm Lens antenna / With purge port / PE
B  76mm Lens antenna / With purge port / PTFE

Sealing / process temperature

A    FKM/(-40-80ºC)
B    FKM/(-40-110ºC)
C    FKM/(-40-200ºC)
                          Y     Special customization

he  Electronic Unit

1  (4~20)mA/HART protocol 24VDC   2-wire 
2  (4~20)mA/HART protocol 220VAC   4-wire   
3  (4~20)mA+RS485/Modbus protocol 12- 24VDC   6-wire                             

Shell material/protection grade

A   Cast aluminum / Single chamber / IP67
B   Cast aluminum / Double chamber / IP67
C   Cast aluminum / Double cavity side view / IP67
D   Plastic ABS / Single chamber / IP65
E   Stainless steel 304 / Single chamber / IP67

Cable Line

 M   M20×l. 5
N    ½″ NPT
X     Special customization  

Display programming

A    Programming with display
B    Without          

Solid and Liquid 80GHz Radar Level Transmitters Fmw21 RS485 Modbus 120m