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Introduction

Application

Technical Data

Drawing

Introduction

Frequency modulated continuous wave (FMCW) is adopted for radar level instrument (80G). The antenna transmits the high frequency and frequency modulated radar signal.
The frequency of the radar signal linearly increases. the transmitted radar signal is reflected by dielectric to be measured and received by antenna. at the same time, the difference between the frequency of transmitted signal and that of the received signal is proportional to the measured distance.
Therefore, the distance is calculated by the spectrum derived from the analog-to-digital conversion frequency difference and the fast fourier transform (FFT)

Advantages

(1) Based on self-aeveloped milimeter-wave radio frequency chip to achieve a more compact radio frequency architecture.
(2) Higher signal-to-noise ratio, almost unaffected by level fluctuations.
(3) The measurement accuracy is millimeter-level accuracy (1mm), which can be used for metrology-level measurement.
(4) The measurement blind area is small, and the effect of measuring the liguid eve of small storage tanks is better.
(5) The beam angle can reach 3 and the energy is more focused,effectively avoiding false echo interference.
(6) High frequency signal, can effectively measure the level of medium with low dielectric constant (e>1.5).
(7) The antenna adopts PTFE lens, which is effective anti-corrosion and anti-hanging material.

Application

Measure the level of solid particles, chemical liquid tank, oil tank and process containers.
1.Radar level meter is working based on electromagnetic wave. So it could have max 120m measure range.
2.Compared with other type level meter, 80G radar level meter could measure different kinds of oil, chemical liquids, solid powder,and many other mediums.
3. 80G radar level meter could work in harsh working condition. It won't be affected by temperature, pressure and humidity. With PTFE horn, it even could work in corrosive condition, such as acid liquid.
4.Customer also could choose different connection methods, such as flange, thread, bracket.

Oil tank

Mine powder

River

Sea side

Lake side

Solid Particles

Technical Data

Table 1 : Technical Parameters

Picture
Model	QTRD-81	QTRD-82	QTRD-83	QTRD-84	QTRD-85	QTRD-86	QTRD-87
Application	Slightly corrosive liquid, stirring, condensation	Slightly corrosive liquid, stirring, condensation	Strong dust, Solid, Block, Powder	Strong corrosive liquid, stirring, condensation	High temperature, strong corrosive liquid, stirring, condensation	Strong corrosive liquid, stirring, condensation	High temperature and high pressure liquid and solid
Process Connection	1.5" Thread, Flange	3.5" Thread, Flange	Flange with purging	Flange	Flange	Flange	Flange
Standard Process Temperature	-30~+100℃	-30~+80℃	-30~+100℃	-30~+75℃	-40~+200℃	-30~100℃	-40~ +1000℃
Process Pressure	-0.1~0.3 MPA	-0.1~0.3 MPA	-0.1~0.3 MPA	-0.1~0.1 MPA	-0.3~2 MPA	-0.1~2 MPA	-0.5~3 MPA
Beam Angle	8°	3°	3°	5°	5°	8°	3°
Measuring Range	10m, 20m, 30m	10m, 20m, 30m, 80m, 120m	10m, 20m, 30m, 80m, 120m	10m, 20m, 30m, 80m, 120m	10m, 20m, 30m, 80m, 120m	10m, 20m, 30m	10m, 20m, 30m, 80m, 120m
Accuracy	±1 mm(≤30mm) ±3 mm(≥30mm)		±5 mm	±1 mm(≤30mm), ±3 mm(≥30mm)
Resolution	±1mm (Under ideal laboratory condition )
Wetted Parts	PTFE						Carbon steel, SS304, SS316
Blind zone	0.15m for 35m, 0.4m for 85m, 0.6m for 120m
Frequency	76~81GHz, FM scanning frequency width 5GHz
Ambient Temperature	-30~+70℃
Shell Material	Cast Aluminium, SS304, SS316
Power Supply	18~28 VDC, 85~865 VAC
Signal Output	Two-wire / four-wire 4~20mA, HART / RS485 Modbus / Bluetooth
Structurer	Compact, remote
Ex-proof	Ex d IIC T6 Gb optional
Protect Grade	IP67
Language	English, Spanish, Russian, Portuguese, Korean

Table 2 : Model Selection

	QTRD-81	X	X	X	X	X	X	X	X
Measuring Range	10m	10
	20m	20
	30m	30
Process Connection	G1½" thread		1
	1½" NPT thread		2
	DN40 flange		3
	DN50 flange		4
	DN80 flange		5
	DN100 flange		6
	DN125 flange		7
	DN150 flange		8
Power Supply	18~28 VDC			D
	85~265 VAC			A
Medium Temperature	-30~100℃				T
Signal Output	Two-wire 4~20 mA + HART					H
	4~20 mA + RS485 Modbus					RS
	Bluetooth					B
Shell Material	Cast Aluminium (standard)						A
	SS304						4
	SS316						6
Explosion Proof	Without							N
	Ex d IIC T6 Gb							E
Structure	Compact								C
	Remote with 10m cable								R

Remark: If you require process connection in flange type, please indicate flange standard before order.

Drawing

QTRD-81 80g-radar-level-meter

Table 1 : Technical Parameters