CN201277958Y

CN201277958Y - PH analysis sensor

Info

Publication number: CN201277958Y
Application number: CNU2008201493576U
Authority: CN
Inventors: 汪献忠; 李建国
Original assignee: Henan Relations Electronics Co Ltd
Current assignee: Henan Relations Co Ltd
Priority date: 2008-09-22
Filing date: 2008-09-22
Publication date: 2009-07-22
Anticipated expiration: 2018-09-22

Abstract

The utility model discloses a PH analysis transducer comprising an electrode measuring system and an electrode leading-out lead (10). The electrode measuring system comprises a measuring electrode (1), a reference electrode (4), external reference solution (2) and internal reference solution (3); the electrode leading-out lead (10) comprises a metal wire conductor (9), a plastic layer (8), a carbon fiber shielding layer (7), a metal shielding layer (6) and a wrapping plastic rubber (5); the carbon fiber shielding layer (7) is arranged between the metal shielding layer (6) and the plastic layer (8); and the external reference solution (2) is composed of KC1 gel electrolyte solution and high molecular polymer which is insensitive to temperature change. The electrode measuring system is stuffed with high molecular polymer, thereby changing the characteristic that the external reference solution is sensitive to temperature change and improving the PH measurement stability; and the electrode leading-out lead is additionally provided with the carbon fiber shielding layer, thereby improving the signal transmission stability.

Description

The PH analyte sensors

Technical field:

The utility model relates to that a kind of outer reference solution character is insensitive to temperature variation, electrode is drawn the current potential formula PH on-line analysis sensor that lead has the double layer screen effect, belongs to the chemical instruments field.

Background technology:

At present, there are two big defectives in current potential formula PH analyte sensors,

One, the outer reference solution of current potential formula PH analyte sensors generally adopts the KCl gel electrolyte, because gel is subjected to the influence of solution temperature bigger, when temperature changed, the character of outer reference solution (KCl gel electrolyte) also can change thereupon.When temperature reduces, outer reference solution meeting retrogradation; Along with the prolongation of time, deposited phenomenon can take place in outer reference solution.The change of outer reference solution character will influence the contrast electrode measuring stability, and then influence the PH measuring stability.

Two, the lead of drawing of the potential electrode of PH analyte sensors and contrast electrode has only metal screen layer, and shield effectiveness is poor.

The utility model content:

Technical problem to be solved in the utility model is: overcome the deficiency that prior art exists, the PH analyte sensors that a kind of outer reference solution character is insensitive to temperature variation, the contact conductor signal shielding is good is provided

The utility model is that the technical scheme that the technical solution problem is adopted is:

A kind of PH analyte sensors comprises that electrode measurement system and electrode draw lead (10), and described electrode measurement system is made up of potential electrode (1), contrast electrode (4), outer reference solution (2) and interior reference solution (3); Described electrode is drawn lead (10) and is made up of wire conductor (9), plastic layer (8), carbon fiber shielding layer (7), metal screen layer (6) and outsourcing plastic cement skin (5), wherein, between metal screen layer (6) and plastic layer (8), be provided with carbon fiber shielding layer (7).

Described outer reference solution (2) is formed by KCl gel electrolyte solution with to the insensitive high molecular polymer of temperature variation.

Positive beneficial effect of the present utility model is:

1. it is a kind of to the insensitive high molecular polymer of temperature variation that the outer reference solution in the utility model electrode measurement system adopts the adding of KCl solution, changed the character of outer reference solution to the temperature variation sensitivity, greatly reduce the temperature variation susceptibility of outer reference solution, can not influence the PH measuring stability, the PH measuring stability improves greatly.

2. electrode of the present utility model is drawn lead has increased the carbon fiber shielding layer, and the composite shielding function of carbon fiber and metal is strengthened greatly, has increased the stability of signal transmission.

Description of drawings:

Fig. 1 is a structural representation of the present utility model;

Fig. 2 is the partial enlarged drawing of electrode measurement system among Fig. 1;

Fig. 3 draws the cut-open view of lead for electrode among Fig. 1.

Embodiment:

Below in conjunction with accompanying drawing the utility model is further described:

Referring to Fig. 1, Fig. 2 and Fig. 3, among the figure, 1---potential electrode, the outer reference solution of 2---, reference solution in the 3---, 4---contrast electrode, 5---outsourcing plastic cement skin, 6---metal screen layer, 7---carbon fiber shielding layer, the 8---plastic layer, the 9---wire conductor, the 10---electrode is drawn lead.

Wherein, potential electrode 1, outer reference solution 2, interior reference solution 3 and contrast electrode 4 have constituted the electrode measurement system of the utility model PH analyte sensors jointly, outer reference solution 2 is formed by KCl gel electrolyte solution with to the insensitive high molecular polymer of temperature variation, changed the character of outer reference solution to the temperature variation sensitivity, greatly reduce the temperature variation susceptibility of outer reference solution, can not influence the PH measuring stability, the PH measuring stability improves greatly; In addition, wire conductor 9, plastic layer 8, carbon fiber shielding layer 7, metal screen layer 6 and outsourcing plastic cement skin 5 have been formed the electrode of the utility model PH analyte sensors jointly and have been drawn lead 10, by the carbon fiber shielding layer 7 that between metal screen layer 6 and plastic layer 8, is provided with, the composite shielding function of carbon fiber and metal is strengthened greatly, and the signal transmission is more stable.

Claims

1. PH analyte sensors comprises that electrode measurement system and electrode draw lead (10), it is characterized in that: described electrode measurement system is made up of potential electrode (1), contrast electrode (4), outer reference solution (2) and interior reference solution (3); Described electrode is drawn lead (10) and is made up of wire conductor (9), plastic layer (8), carbon fiber shielding layer (7), metal screen layer (6) and outsourcing plastic cement skin (5), wherein, between metal screen layer (6) and plastic layer (8), be provided with carbon fiber shielding layer (7).