JC702 Guided Wave Radar Level Transmitter

JC702 Guided wave radar level meter are a kind of measuring instrument based on the time travel, radar wave are travelling as light speed, the travel time can be transformed into level signal by the electronic parts.

JC701 Guided Wave Radar Level Transmitter with PTFE liner 

JC702 Guided wave radar level meter are a kind of measuring instrument based on the time travel , radar wave are travelling as light speed , the travel time can be transformed into level signal by the electronic parts . The detector can send the HF pulse and spread along cable , when the pulse meet the level surface , it will be reflected and received by the receptor inside the instruments , then the receptor will transform the distance signal into level signal. This model is specially designed for corrosive liquid .

Feature  

1) Can measure any liquid with the dielectric constant no less than 1.4 .

2) It is usually used to measure the liquid with viscosity no bigger than 500cst ,in this case , it is difficult for the liquid to adhere to the probe 3)The maximum measuring range of the guided wave radar with single rod is 6 meters .

4)The probe has strong adaptability for steam and foams . The measurement cannot be influenced by those factors .

The figure right show the installation of wave guided radar transmitter with twin-rod. It is mainly for measurement of liquid .

Features  

1) For liquid with relatively lower electric constant , we can use the transmitter with twin rod probes to get good and precise measurement .

It is suitable for measurement of any liquid with dielectric constant no less than 1.6

2) Viscosity of the liquid should be no more than 500cst

3) Maximum measuring range of the transmitter with rod probe is 6 meters .

The measurement cannot be influenced with steam and foams . 

Technical Parameter for JC702 Guided Wave Radar Level Transmitter with PTFE 

 

Working frequency :     100MHZ-1.8GHZ

Measuring range :       cable type,0-30m;pole type,coaxial-type: 0-6m

Repeatability :           ±3mm

Resolution:             1mm

Sampling :              echo sampling 55 times/s

Response speed :         >0.2S(depends on concrete application status)

Output current signal:    4 -20mA

Accuracy :              <0.1%

Communication interface : HART  communication  protocol

Process connection:       G1-1/2  Flange DN50,DN80,DN100,DN150

Process pressure :         – 1-40bar

Power source :           24VDC(±10%), Ripple voltage:1Vpp

Power consumption: max 22.5mA

Environmental Condition:  temperature -40℃~+80℃

Protection Class :          IP68

Explosion-proof degree :    EXiaIICT6

Two-wires connection cable: One two-core shield cable is used for instrument power supply and signal output

Electrical cable entry :      two M20×1.5 or 1/2NPT (cable diameter 5–9mm)

 

Model Selection for JC702 Guided Wave Radar Level Transmitter

Explosion Proof Approval
P Standard (without approval
I Intrinsically safe (Exia IICT6)
C Intrinsically safe (EXia IICT 6)
G Intrinsically safe+flameproof Approval (Exd ia II CT 6)
Shape of Detecting  /Material /Process temperature
A Rope/6mm /Stainless steel 316L/ PTFE
B Rope/10mm/stainless steel 316L/PTFE
C Length PP /Rope /Stainless steel 316L
D Length PP /Rod /Stainless steel 316L
E Length PTFE  /Rope /Stainless steel 316L
F Length PTFE  /Rod /Stainless steel 316L
X Special Design
Process Connection /Material
GP (F) Thread  G11/2A
NP (G) Thread 11/2NPT
FA (L) Flange  DN50/PTFE
FX Special design
Seal/Process Temperature
A Viton/(-30 to 150 ) °C
B Kalrez(-40 t0 150)°C
Electronic
B (4-20)mA/Hart 2 wire
C (4-20)mA(22.8-26.4)V DC /Hart 2 wire/4 wire
D (198-242) VAC/Hart 4 wire
Housing /Protection
A Aluminium/IP67
B Plastic/IP66
D Aluminium (2 chamber)/IP67
G Stainless steel 316L/IP 67
Cable Entry
M M20*1.5
N 1/2”NPT
Display /Programming
A Yes
X NO

Working Condition 

normally used in

1. Tap water
2. Vegetable oil
3. Cement powder
4. Limestone flower
5.Granular food like corn,rice
6. Sewage water
7. Powder material or liquid for 0-30m

1. If measuring big dielectric constant like water, DN50 with flange is OK for 0-15m and DN80 with flange for above 15m.
2. If measuring powder materials, DN80 with flange is OK for 0-15m, DN100 with flange for above 15m.
3. The length of short pipe shall be controlled within 20cm
4. It is generally erected at 1/4 of diameter and at least 300mm from tank wall.

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