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DCRD1000A2 Radar Water Level Gauge/Sensor

Principle 

The radar level gauge antenna emit narrow microwave pulse that propagate in speed of light in space, when come across the measured medium surface, its energy is partly reflected back and is received by the same antenna. The time interval of transmitted pulse and the received pulse is proportional to the distance from the antenna to the surface of the measured medium, thereby figure out the distance from the antenna to the measured medium surface. 

Features: the radar level gauge adopt transmission frequency up to 26GHz, which possesses: 

  - Small beam angle(minimum 5 degrees), concentrated energy, stronger anti-jamming capability, improving the measurement accuracy and reliability.

  - Small antenna size for installation, and install added protective dust cover, such as the antenna device. 

  - smaller measuring blind zone for cannikin measurement; 

  - Shorter wavelength, suitable for level measurement of small particulate matter.

Apply advanced microprocessor and unique DCRDDiscovery echo processing technology for complex working conditions. 

Adopt the pulse working manner, and quite low transmit power, can be installed inside a variety of metals, non-metallic container, therefore harmless to human body and environment. 

Characteristic: a variety of patented antenna, anti-coagulation, anti-hanging material, the minimum emission angle is 8 degree. 

Application: widely used in a variety of liquid level measurement, such as: hydrological monitoring. 

Maximum range: 30m (there are 70m of other model) 

Accuracy: ± 3mm 

Antenna material: (1) stainless steel 316L Speaker/ PTFE vibrator 

(2) stainless steel 316L/ PTFE vibrator 

(3) all-plastic speaker/ PTFE vibrator 

Antenna structure: (1) sharp-pointed vibrator, poor anti-condensate ability

(2) cone vibrator, anti-coagulation 

(3) cone vibrator, anti-dew, anti-coagulation 

Process temperature: (1) (- 40 ~ 200) ° C 

(2) (- 40 ~ 200) ° C 

(3) (- 40 ~ 100) ° C 

Process pressure: (1) (- 0.1 ~ 4) MPa 

(2) (- 0.1 ~ 0.3) MPa 

(3) (- 0.1 ~ 0.3) MPa 

Frequency Range: 26GHz 

Signal output: (4 ~ 20) mA/ HART 

Power supply: two-wire/ four-wire DC12 ~ 24V

1.  DCRD1000A2                           

Technical Parameter: 

Application

Temperature resistance, withstand pressure, 

slightly corrosive liquid

Measuring range

30 meter

Process connection

Screw, Flange

Medium Temperature

-40~150℃

Process pressure

-0.1~4.0MPa

Precision  

±3mm

Frequency range

26GHz

Anti-explosion/safety grade

Exib ⅡC T6 Gb /IP67

Signal output

4...20mA/HART(Two-wire/ Four) RS485/Mod bus

2.  DCRD1000A2 RS485/Modbus wiring diagram as below:



3.  DCRD1000A2 external view



4.Technical Parameters

Housing

Cast-in-one waterproof explosion-proof shell

Seal between shell and shell cover

silicon rubber

Shell window

Makrolon

Ground terminal

SS

Supply voltage

Two wire (6~26) V DC

Consumption

max 22. 5mA / 1W

Allowed ripple wave

- <100Hz  Uss<lV                                         - (100~100K) Hz

Uss

<l0mV

Cable parameter

cable inlet/pin

M20xl.5 cable inlet


Amphenol connector

Wire cross section

Output parameter

output signal (4~2 0) mA

Resolution

1. 6u A

Trouble signal

Invariant current output 20. 5mA

Blind zone

Antenna end

Max measurement distance

30meter

Frequency range

26GHz

Measurement interval

About 1 sec (depend on parameter setting)

Adjustment time

About 1 sec (depend on parameter setting)

Display resolution

1mm

Working storage and transportation temperature

(-40~100) ℃

Process temperature (the temperature of the antenna portion)

(-40~250)℃

Pressure

Max. 4MPa

Shock-proof

mechanical shockl0m/s² , (10~150)Hz

5. Model Selection

License 

P  standard (non-Ex) 

I  Intrinsically Safe (Exib IIC T6 Gb) 

D  intrinsically safe explosion-proof (Exd [ib] ib IIC T6 Gb) 

Process connection / Material 

G  thread G11 / 2A / stainless steel 304 

N  Threaded 11 / 2NPT / stainless steel 304 

A  flange DN50 / stainless steel 304 

B  flange DN80 / stainless steel 304 

C  flange DN100 / stainless steel 304 

D  flange DN125 / stainless steel 304 

E  flange DN150 / stainless steel 304 

F  flange DN200 / stainless steel 304 

Y  special custom 

Antenna Type/ Material 

A  horn antenna ¢ 46mm / stainless steel 304 

B  horn antenna ¢ 76mm / stainless steel 304 

D  horn antenna ¢ 121mm / stainless steel 304 

Seal/ process temperature 

V  Viton / (- 40 ~ 150) ℃ 

K  Kalrez / (- 40 ~ 250) ℃ 

Electronics unit 

2  (4 ~ 20) mA two-wire 

3  (4 ~ 20) mA / (24) VDC / HART two-wire 

4  (4 ~ 20) mA / (~ 24) VDC / HART four-wire system 

5  (4 ~ 20) mA / (~ 220) VAC / HART four-wire system 

Housing/ Protection class 

L  aluminum / IP67 

G  stainless steel 304 / IP67 

Cable entry 

M  M20xl. 5 

N  1/2 NPT 

Live display/ programming 

A  band 

X  without 

Special convention 

Y  special convention

License 

P  standard (non-Ex) 

I  Intrinsically Safe (Exib IIC T6 Gb) 

D  intrinsically safe explosion-proof (Exd [ib] ib IIC T6 Gb) 

Process connection / Material 

G  thread G11 / 2A / stainless steel 304 

N  Threaded 11 / 2NPT / stainless steel 304 

A  flange DN50 / stainless steel 304 

B  flange DN80 / stainless steel 304 

C  flange DN100 / stainless steel 304 

D  flange DN125 / stainless steel 304 

E  flange DN150 / stainless steel 304 

F  flange DN200 / stainless steel 304 

Y  special custom 

Antenna Type / Material 

A  horn antenna ¢ 46mm / stainless steel 304 

B  horn antenna ¢ 76mm / stainless steel 304 

D  horn antenna ¢ 121mm / stainless steel 304 

Seal/ process temperature 

V  Viton / (- 40 ~ 150) ℃ 

K  Kalrez / (- 40 ~ 250) ℃ 

Electronics unit 

2  (4 ~ 20) mA two-wire 

3  (4 ~ 20) mA / (24) VDC / HART two-wire 

4  (4 ~ 20) mA / (~ 24) VDC / HART four-wire system 

5  (4 ~ 20) mA / (~ 220) VAC / HART four-wire system 

Housing/ Protection class 

L  aluminum / IP67 

G  stainless steel 304 / IP67 

Cable entry 

M  M20xl. 5 

N  1/2 NPT 

Live display/ programming 

A  band 

X  without 

Special convention 

Y  special convention


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