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Production Introduction

Based on the principle of conductance, use the probe of the material instrument and the container wall as the two pole plates of one capacity. When the level of material between the probe and the container falls up and down, the capacity and the total resistance will change in proporation to it. The specific analyzing and contrast electric circuit will calculate this change and convert it into 4~20mA current signals through the amplifier and thus further detect the level of material.

Operating Principle

It is based on the radio frequency(RF) technology. A radio frequency is applied to the probe. Determine the impact caused by the surrounding environment through continuous analysis. All materials have a dielectric constant and their electrical conductivities are different from that of air. When the probe contacts with the materials, the total impedance changes due to the minute capacity shift. The energized probe and the tank wall constitute the two plates of the capacitor, so the insulator of the probe and the surrounding air become dielectric materials. When the air(dielectric constant is 1.0) is replaced by any other material(dielectric constant>1), the changes of capacitance cause the changes of impedance. The influence is measured by the electric circuit and compared with the reference datum established by the sensitivity setting (circuit) in order to realize the control output.

Product Characteristics

High versatility: It can be used in various occasions. Detect a variety of process materials, for example: fly ash, particle, powder, liquid, slurry, conductive and non-conductive materials.
Anti-adhesion circuit: The anti-adhesion electronic circuits can eliminatefalse signals that the adhesion materials produced.
It has a universal probe, rope probe and tablet probe, PPS, Teflon and stainless steel structure, which can be used under high temperature, high pressure and in liquid, powder, solid block materials and corrosive substances.
The probe is high temperature proof. The probe is suitable for the working environment from -40 °C to 200 °C. The ceramic high temperature probe can also be used. The highest temperature that it can resists is up to 800 ° C.
Contact capacity: Large capacity relay contact outputs. The LED lights indicate the working status. 0-30 second delay.

Product Application

Application industry: metallurgy electric power, chemical and petrochemical, water and sewage treatment, pulp and paper, food and pharmaceutical industries.
Measuring media:
Liquid: fuel, solvent, acid, alkali, liquefied petroleum gas, water, etc.;
mixture: sewage, liquid waste, pesticides, solution, industrial products;
interface: the oil-water interface, alcohol / acid interface;
Foam: Latex foam, beer foam, soap bubble, etc.;
slurry: sludge, pulp, crude oil / bitumen, paint / grease, etc.;
powder: pulverized coal, fly ash, cement, lime, mineral powder, flour, etc.;
particles: plastic, alumina, fertilizers, drugs, and grains.
block material: crushing coal, lime, coke, ore.
slurry: sludge, pulp, crude oil / bitumen, paint / grease, etc.;
powder: pulverized coal, fly ash, cement, lime, mineral powder, flour, etc.;
particles: plastic, alumina, fertilizers, drugs, and grains, etc.
block material: crushing coal, lime, coke, ore, etc.

Performance Index