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The KDRD-FMW series sensors are 80G FM radar type level measuring instruments with a measuring distance of up to 150 meters. The antenna is further optimized and the new fast microprocessor allows for higher speed signal analysis and processing, making the instrument available for high temperature and high pressure and other environmental solids measurement.
The general principle of frequency modulated continuous wave radar level meter is that the radar emits electromagnetic waves at the top of the tank, and the electromagnetic waves are received by the radar after hitting the medium and reflected. Because the speed of light C and FM slope K are known, so the frequency difference δ f is estimated, and the distance R of the material surface at the radar installation position can be obtained, and then the height of the material level is obtained by subtracting the spatial distance from the radar to the material surface (referred to as the empty height) from the known total height of the tank.
This instrument fully meets the requirements of protection class IP66/67. Please make sure that the cable sealing head is waterproof. As shown
How to ensure that the installation meets the requirements of IP67.
Please make sure that the sealing head is not damaged.
Please make sure that the cable is not damaged.
Please ensure that the cable used meets the requirements of the electrical connection specification.
Before entering the electrical connection, bend the cable downwards to ensure that water does not flow into the housing, see ①
Please tighten the cable sealing head, see ②
Please plug the unused electrical connections with blind plugs, see ③
Measuring medium: solid
Measuring range: 0.1m~30m /0.3 ~150m
Process connection: Flange ≥ DN80
Process temperature: -40～80℃
Process pressure: -0.1 ~ 0.3 MPa
Accuracy: ±5mm
Protection level: IP67
Center frequency: 80GHz
Power supply: two-wire (DC24V) / four-wire (AC220V) / six-wire (DC12V~24V)
Housing: aluminum/plastic/stainless steel
Signal output: 2-wire 4.... .20mA / HART protocol / 4-wire 4.... .20mA /RS485 Modbus
Process Links
Flange / Material PP, PTFE, stainless steel, stainless steel + PTFE flange
Material
Cast aluminum/ Stainless steel/ Plastic ABS
Housing Seal between housing and housing Silicone rubber
Housing sight glass Polycarbonate
Grounding terminal Stainless steel
Supply voltage Four-wire standard type
(198~242)V AC
Power consumption max80mA DC24V/2W
Allowable ripple ＜100Hz Uss＜1V
(100~100K)Hz Uss＜10mV
Double chamber housing
(15-28) V DC
Four-wire system
100V AC four-wire system
Cable parameters Cable inlet/plug 1 M20x1.5 cable inlet
1 blind plug M20×15
Grounding terminal Wire cross-section 2.5mm2
Output parameters Output signal (4~20)mA/RS485Modbus
Resolution 1mm
Fault signal Current output constant; 20.5mA;22mA;3.9mA
Integration time (0~20)s, adjustable
Blind area 0.1m/0.2m/0.3m
Max. measuring interval 150m
Measuring interval approx. 1 sec (depending on parameter setting)
Adjustment time approx. 1 sec (depending on parameter setting)
Adjustment time Working storage and transportation temperature
(-40~80)℃
Process temperature
KDRD-FMW11S
-40～100℃
KDRD-FMW11
-40～80℃
KDRD-FMW12
-40～100℃
KDRD-FMW13
-40～120℃/-40-110℃(threaded connection)
KDRD-FMW14 -40~200℃
Relative humidity
＜95%
Pressure
Max2.5MPa
Vibration resistance
Mechanical vibration 10m/s2,(10~150)Hz
When installing the instrument, avoid installing it above the inlet, and try to avoid various objects that affect the signal, such as stirring paddles, etc.
● Under extremely complex working conditions, the instrument can work normally without any obstacle in the area of 20cm radius centered on the radar installation point.
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