NYDR-3051 RF Capacitance Liquid Level Meter  Operating Principle

 

the working principle of NYDR-3051 RF capacitance liquid level meter is based on RF (RF) capacitance technology. A radio frequency is applied to the probe to determine the impact of the surrounding environment through continuous analysis. Because all the materials have dielectric constant and their conductivity is different from that of air, the total impedance of the probe is changed because of the small capacitance deviation when the probe is in contact with the material. Because the electric probe and the wall of the container form the two polar plates of the capacitor, the insulator of the probe and the surrounding air become the dielectric material. When air (dielectric constant 1.0) is replaced by any other material (dielectric constant > 1.0) The change of capacitance caused the change of impedance. this effect is measured by the circuit and compared with the reference set up by the sensitivity setting (circuit).

 

NYDR-3051 RF Capacitance Liquid Level Meter Technical Parameter

 

Applications	Liquid, corrosive liquid, split-mounted
Probe type	PTFE,304,316 (optional)
Measuring Range	Rod:0~6m, Cable:0~20m
Process temperature	-40130℃,-40260℃,-184260℃
Ambient temperature	-40 ℃ ~ + 80 ℃
Time delay	0 30s continuous adjustable
Process pressure	-0.11.0MPa
Power supply	24vDC, 220VAC
Signal output	4...20mA/HART/RS485/Modbus...
Process connection	Thread/Flange(selective)
Protection class	IP67
Explosion-proof grade	ExiaⅡCT6(selective)
Power loss protection	High and low mode, Field

 

 Note: Products Can be Customized according to the Specific requirements of Users!

 

NYDR-3051 RF capacitance liquid level meter antenna using PTFE material, PTFE (PTFE or PTFE), commonly known as "plastics king", is made up of tetrafluoroethylene by the polymerization of polymer compounds, it has excellent chemical stability, high corrosion resistance, sealing, lubrication is not sticky, electric insulation and good anti-aging endurance, PTFE has the following features:

• High temperature resistance -- operating temperature up to 250℃.
• Low temperature resistance -- good mechanical toughness; Even when the temperature drops to -196℃, 5% elongation can be maintained.
• Corrosion resistance - inert to most chemicals and solvents, resistant to strong acids and bases, water and various organic solvents.
• Weather resistance - has the best aging life of plastics.
• High lubrication - the lowest friction coefficient of solid materials.
• Non-adhesion - is the minimum surface tension in a solid material and does not adhere to any substance.
• Non-toxic -- with physiological inertia, as artificial blood vessels and organs implanted in the body for a long time without adverse reactions.

 

 

NYDR-3051 RF Capacitance Liquid Level Meter  Design Features

 

• Modular converter and sensor integration, no moving parts, high reliability, strong anti-jamming ability;
• More extensive applicability, there are a variety of probe forms, a variety of process connection forms, a variety of production materials, customizable design;
• Installation, debugging and maintenance are extremely convenient

 

 

NYDR-3051 RF Capacitance Liquid Level Meter Application field

 

Capacitive level meter can be used for continuous level measurement of almost all strong, weak corrosion resistant and non-corrosive media in open or pressxire vessels. Widely used in: Petroleum, Chemical, Fertilizer, Metallurgy, Natural Gas, Power Plant, Machinery Manufacturing, ship, Pharmaceutical Factory, sewage treatment, Food, Liquor and other industrial occasions of liquid level detection and control.