GCRD9X series pulse radar level gauge

Working principle	The radar level gauge antenna emits narrow microwave pulses, which propagate at the speed of light in space. When encountering the surface of the measured medium, some of the energy is absorbed
	Sent back and received by the same antenna. The time interval between transmitting and receiving pulses is positive for the distance from the antenna to the surface of the measured medium
	Compared to. The RD9X series radar level gauge adopts special correlation demodulation technology, which can accurately identify the time interval between the transmitted pulse and the received pulse
	To further calculate the distance between the antenna and the surface of the measured medium.

Product Features	The radar level gauge adopts a new generation of processing technology and has the following advantages:
	1、 26G high-frequency radar level gauge (RD91-95)
	·Compact high-frequency non-contact sensor with high precision and accuracy.
	·The measurement effect is better for materials such as powder and particles. The measurement method will not be affected by the large amount of dust, filling noise, or airflow generated by pneumatic filling and temperature fluctuations.
	·The small beam angle and concentrated energy provide greater flexibility for the installation position of the radar. Having stronger anti-interference ability greatly improves measurement accuracy and stability.
	·The antenna size is small, making it easy for radar installation on site, and it also has better adaptability for measuring small and special tanks.
	·The measurement blind spot is small, which maximizes the measurement range of the radar.
	·With shorter wavelength, it can penetrate into foam and neutralize serious condensate deposition, and is suitable for occasions with particularly difficult process conditions.
	·Transmitting pulse signals, the radar level gauge has extremely low transmission power and can be installed in various metal and non-metal containers, which is harmful to both the human body and the environment No harm.
	2、 6G Low Frequency Radar Level Gauge (RD96-99)
	·Low transmission frequency and strong penetration.
	·The signal remains stable when measuring surface fluctuations.
	·Easy maintenance, obvious economic advantages in price, and wide applicability.
	Due to the use of advanced microprocessors and unique echo processing technology, the RD9X series radar level gauge can be applied to various complex engineering applications
	The situation. The use of on-site adjustable display units allows customers to adjust the range, blind spots, language, and damping time according to the situation, supporting
	The full Chinese menu, waveform display, false echo learning and other functions are at the leading level in China.

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Technical Parameter	·Shell	Die cast aluminum, plastic, stainless steel 316L
	·Connection of shell cover Sealing	silicon rubber
	·Shell window	polycarbonate
	·Power supply	Standard type: two-wire system (16-36) V DC, intrinsic safety type: two-wire system (21.6-26.4) V DC
	·Allow ripples	—＜100Hz Uss＜1V； —(＜100～＜100K）Hz Uss＜10mV
	·Four wire system, two bedroom	Intrinsic safety+explosion-proof (21.6-26.4) V DC, (198-242) V AC
	·Power consumption	max.1VA,1W
	·Cable entry plug	M20x1.5 cable entry, blind M20x1.5
	·Applicable cables	Diameter (5-9) mm shielded cable, user wire cross-section 2.5mm
	·Output signal	4～20Ma/HART
	·Resolution	1.6Ua
	·Fault signal	The current remains unchanged; 20.5mA；22mA； 3.9mA
	·Four wire load system Resistance	Maximum 500 ohms
	·Integral time	（0～40）s， adjustable
	·Blind spot	Antenna end
	·Maximum measurement distance	RD91: 10 meters (liquid); RD92: 30 meters (liquid)
		RD93: 20 meters (liquid); RD94:35 meters (solid)
		RD95: 70 meters (solid); RD96: 20 meters (liquid)
		RD97:20 meters (liquid); RD98:35 meters (solid)
		RD99: 35 meters (solid);
	·Microwave frequency	RD91-95 frequency is 26GHz; RD96-99 frequency is 6GHz
	·Measurement interval	Approximately 1 second (depending on parameter settings)
	·Adjust time	Approximately 1 second (depending on parameter settings)
	·Display resolution	1mm
	·Work storage and Transportation temperature	（-40～80）℃
	·Relative humidity	＜95％
	·Pressure	Ma.4MPa
	·Vibration resistance	Mechanical vibration 10m/s2, (10~150) Hz
	·Flanges	The standard flange size refers to GB/T9119-2000 PN1.6MPa

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Exterior structure (RD91 anti-corrosion type)

Exterior structure (RD92 liquid level type)

Exterior Structure (RD93 Sanitary Type)

External structure (RD94 level type)

Exterior structure (RD95 universal joint type)

Exterior structure (RD96/RD97 anti-corrosion type)

Exterior structure (RD98/RD99 flange type)

INSTALLATION REQUIREMENTS

• Basic requirements and instructions

When radar antennas emit microwave pulses, there is a certain emission angle. From the lower edge of the antenna to the surface of the measured medium, emitted by

There should be no obstacles in the area radiated by the microwave beam, so installation should avoid facilities such as ladders as much as possible

Limit switches, heating equipment, brackets, etc. In this case, "false echo learning" must be performed during installation. If the radar is safe

The container should be connected to ensure that the pulse signal is emitted at a certain angle and does not radiate to the connection during the emission process

On the inner wall, try to ensure that the end of the antenna is fully inserted into the tank (i.e. the end of the antenna is completely inserted into the tank).

The distance between the radar installation position and the tank wall should be greater than 200mm, and the optimal installation position for arc top tanks is between 1/2 and 1/3 of the radius.

When installing the radar, it should be kept away from the feeding port, and attention should be paid to ensuring that the microwave beam does not intersect with the feeding material flow.

During radar measurement, it is necessary to ensure that the measured medium does not enter the radar blind zone. If the on-site environment is complex, the installation position of the radar can be appropriately raised

The solution is to expand the diameter of the installation connection pipe.

Instruments installed in explosion-proof areas must comply with the installation regulations of national explosion-proof hazardous areas. The casing of explosion-proof instruments is made of die cast aluminum.

Explosion proof instruments can be installed in places with explosion-proof requirements, and the instruments must be grounded.

• Illustration Explanation

• Installation position

• nozzle of vessels