♦903

	Suitable for Medium	Solid material, Strong dust,easy to crystallize, condensation occasion
	Measuring Range	70m
	Frequency	26GHz
	Accuracy	±15mm
	Process Temperature	-40℃~130℃(Standard type) -40℃~250℃(High temperature type)
	Process pressure	-0.1~4.0 MPa (Flat flange) -0.1~0.3MPa (Universal flange)
	Signal output	4~20mA /HART (2-wire / 4-wire) RS485/ Modbus
	Power Source	Two-wire (DC24V) Four-wire(DC24V/AC220V)
	Connection	Universal Flange
	Protection Grade	IP67
	Explosion-proof Grade	Exia IIC T6 Ga/Exd IIC T6 Gb

♦904

	Suitable for Medium	Solid material, Strong dust,easy to crystallize, condensation occasion
	Measuring Range	80m
	Frequency	26GHz
	Accuracy	±15mm
	Process Temperature	-40℃~130℃(Standard type) -40℃~250℃(High temperature type)
	Process pressure	-0.1~0.3MPa
	Signal output	4~20mA /HART (2-wire / 4-wire) RS485/ Modbus
	Power Source	Two-wire (DC24V) Four-wire(DC24V/AC220V)
	Connection	Thread, Universal Flange
	Protection Grade	IP67
	Explosion-proof Grade	Exia IIC T6 Ga/Exd IIC T6 Gb

♦906

	Suitable for Medium	Hygienic liquid storage, Corrosive container
	Measuring Range	20m
	Frequency	26GHz
	Accuracy	±3mm
	Process Temperature	-40℃ ~ 130℃
	Process pressure	-0.1~4.0MPa
	Signal output	4~20mA /HART (2-wire / 4-wire) RS485/ Modbus
	Power Source	Two-wire (DC24V) Four-wire(DC24V/AC220V)
	Connection	Flange
	Protection Grade	IP67
	Explosion-proof Grade	Exia IIC T6 Ga/Exd IIC T6 Gb

The sound wave is a mechanical wave with a density of 40; gas, liquid and solid 41; propagation depends on the influence of the medium, temperature and pressure on the measurement. Need temperature compensation. Temperature and pressure measurement are generally not applicable. First of all, the ultrasonic level gauge has a temperature limit. Generally speaking, the temperature of the probe cannot exceed 80 degrees, and the propagation speed of sound waves is greatly affected by temperature. Secondly, the ultrasonic level gauge is greatly affected by the pressure, generally within 0.3MPa, because the ultrasonic wave is emitted by the vibration of the piezoelectric material. When the pressure is too high, the sound part will be affected. Third, when the fog or dust in the measurement environment is large, the measurement effect is not good. The radar level gauge emits high-frequency pulses and propagates along the cable. When the pulse is in contact with the material surface, it is reflected by the receiver inside the instrument and the distance signal is converted into a material level signal. The electromagnetic wave is used as the detection signal, which is reflected to the interface as the dielectric constant changes. Electromagnetic waves can propagate in vacuum without being affected by changes in temperature and pressure. Therefore, it can be used in a high temperature and high pressure environment. The measurement of very low dielectric constant media is not applicable. The radar tube uses electromagnetic waves and is not affected by the degree of vacuum. It has a wide range of applications in terms of medium temperature and pressure. The emergence of high-frequency radar tubes makes the application range of radar tubes wider. Therefore, the radar tube is an

ideal choice for level measurement.