CN2470823Y

CN2470823Y - Plug-in type sensor of capacitor type water-content detecting instrument

Info

Publication number: CN2470823Y
Application number: CN 01221173
Authority: CN
Inventors: 单元道
Original assignee: Individual
Current assignee: Individual
Priority date: 2001-04-13
Filing date: 2001-04-13
Publication date: 2002-01-09
Anticipated expiration: 2011-04-13

Abstract

The utility model relates to a cuttage sensor, in particular to a cuttage sensor in capacitor water content measuring instruments, which is applicable to water content measurement for particle materials such as grain and seeds. The utility model comprises two electrodes and is characterized in that the two electrodes are an outer electrode and an inner electrode respectively; wherein the outer electrode is a long open shell with a concave face positioned inside, while the inner electrode takes a shape of a post and is arranged to the inner concave face of the outer electrode; an insulation layer is positioned between the outer electrode and the inner electrode. The utility model has the advantages of high measuring precision, availability of a result able to represent the whole material and convenience for use as well as for carrying. Two functions are combined as a whole into the utility model that the utility model can be applied to measure water content of particle materials as well as used as a tool for cutting samples.

Description

The cuttage formula sensor of condenser type moisture teller

The utility model relates to a kind of cuttage formula sensor, the cuttage formula sensor in especially a kind of condenser type moisture teller.It can be used for granular material, stirs the determination of moisture of thing etc. as the Chinese medicine of Liang Shi Grains thing, seed, pulverizing, soil, cement.

Cuttage formula sensor in the existing condenser type moisture teller, its structure can see from Fig. 6 that its two electrodes are two poles.The shortcoming of this cuttage formula sensor is: in the time of 1) in material is contained in different packings, its tight ness rating, pressure are all inequality, thereby cause measuring error easily, especially it is all inequality to repeat the data that record, and also be subjected to the influence of mechanical effect between two electrodes, make the data that record also relevant with the cuttage position, therefore the measurement result of existing cuttage formula sensor is not too reliable; 2) surface of contact of existing cuttage formula sensor and tested material is less, so the data that recorded can not be represented all of material; 3) people with the lengthening electrode length change sensor surface and tested material surface of contact, improve its accuracy, so about about 1 meter of its length, therefore inconvenient people carry, also inconvenient use it.

The purpose of this utility model is to overcome the shortcoming that exists in the above-mentioned prior art, a kind of cuttage formula sensor of condenser type moisture teller rational in infrastructure is provided, so that having the high and data that record of measuring accuracy, it can represent whole material, and characteristics such as easy to use, easy to carry.

The cuttage formula sensor of the utility model condenser type moisture teller, it contains two electrodes, be characterized in: its two electrodes are respectively external electrode and interior electrode, external electrode is band concave surface and uncovered encrusting in, interior electrode is rod and is loaded in the inner concave of external electrode, and has insulation course between inside and outside two electrodes.

The cuttage formula sensor of the utility model condenser type moisture teller, an end of its external electrode has the tip of the made things convenient for cuttage of top seal, in addition end have can with the hollow tubular of condenser type moisture teller to be connected securely.

The utility model has the advantages that: when 1) the utility model cuttage formula sensor is measured in inserting material, tested material can freely fall in the band inner concave and uncovered encrusting of external electrode, when material fall full this when encrusting by constant volume, and separate with the material around it, therefore can eliminate the labile factor in the measurement effectively, the polydispersity in material space for example, instability and the material pressure gap on diverse location etc., and the direction when inserting material is (as level, vertical or other direction) irrelevant, be packed also with tested material or the packed state of heap in bulk irrelevant, so the data that record can reflect the truth of tested material exactly, avoid the error of duplicate measurements; 2) the utility model cuttage formula sensor is when measuring, and do not need anyly to add container and the utensil of weighing; 3) after tested material piled with, makes thinner in the encrusting of external electrode, its space electric capacity reduced, the ratio of entity capacitance increases, thereby reduced the measuring error that causes because of breed difference or grain size effectively; 4) tested material extracted out in pack of the utility model cuttage formula sensor can be represented all of material, so it both can be used for the determination of moisture of granule materials, also can be used as the sample instrument, makes the device can be dual-purpose.

To and contrast accompanying drawing by embodiment below, the utility model will be done narration further.Accompanying drawing thes contents are as follows:

Fig. 1, Fig. 2 and Fig. 3 are respectively stereographic map, front view and the main cut-open views of the cuttage formula sensor of the utility model condenser type moisture teller;

Fig. 4 is the structural drawing of the utility model cuttage formula sensor after installing on the condenser type moisture teller;

Fig. 5 is the locational profile of the A-A in Fig. 3;

Fig. 6 is the structure diagram of the cuttage formula sensor of existing condenser type moisture teller.

From Fig. 1, Fig. 2, Fig. 3, Fig. 5, can see the structure of the cuttage formula sensor of the utility model condenser type moisture teller, its two electrodes are respectively external electrode 1 and interior electrode 2, external electrode is to be with concave surface in one, as xsect is semicircular uncovered encrusting, interior electrode is rod and is loaded in the inner concave of external electrode, and have insulation course 3 between inside and outside two electrodes, so that inside and outside two electrode isolation are opened to form a fixed capacity between the inner round wall face of interior electrode surface and external electrode.

The cuttage formula sensor of the utility model condenser type moisture teller, the right-hand member of its shape external electrode that encrusts is the tip 11 of top seal, to make things convenient for it to the tested material cuttage; Its left end is a hollow tubular 12, and it can be connected on the condenser type moisture teller securely, and can bear cuttage power reliably in it uses.

Encrusting of external electrode 1 is to be to make behind the metal circular tube subdivision of 1.5～2cm, the about 35～55cm of length by diameter, and the uncovered partial-length of its band concave surface is that 30～50cm, wall thickness are 0.07～0.1cm; Interior electrode 2 is the strip copper rod, and its length is that 28～45cm, width are that 0.3～0.5cm, thickness are 1～0.2cm; Insulation course 3 makes outer, interior electrode isolation, forms fixed capacity between electrode surface and the external electrode inner round wall face in making.When the tested material of different moisture content fills up encrusting during the space of external electrode,, cause their capacitance inequality because of the difference of dielectric constant.From Fig. 4, can see, will on the liquid crystal window 4 of condenser type moisture teller, show with the corresponding water cut of capacitance.

Claims

1, a kind of cuttage formula sensor of condenser type moisture teller, it contains two electrodes, it is characterized in that: its two electrodes are respectively external electrode (1) and interior electrode (2), external electrode is band concave surface and uncovered encrusting in, interior electrode is rod and is loaded in the inner concave of external electrode, and has insulation course (3) between inside and outside two electrodes.

2, the cuttage formula sensor of condenser type moisture teller as claimed in claim 1, it is characterized in that: an end of said external electrode has the tip (11) of the made things convenient for cuttage of top seal, in addition end have can with the hollow tubular (12) of condenser type moisture teller to be connected securely.