Electrically-controlled dropwise adding system for inductive gravity metering

A technology of gravity sensing and electronic control, which is applied in the direction of measuring tube/pipette, chemical analysis by titration method, etc., can solve the problems of low precision, inaccurate measurement, large error, etc., to reduce the failure rate and simplify the structure , easy to wash effect

Inactive Publication Date: 2017-02-15
SHANGHAI RES INST OF CHEM IND +1
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, this device also calculates the weight of the titration solution consumed in the titrant bottle with large errors, rather than directly calculating the weight of the solution entering the titration cup; the stress changes of the balance, wires a...

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  • Electrically-controlled dropwise adding system for inductive gravity metering

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Embodiment 1

[0025] like figure 1 Described, an electronically controlled dripping system for gravity induction metering, comprising a liquid storage bottle 1, a liquid discharge pipe 2, a solenoid valve 4, a titration head 6, a wireless transmission module, a titration cup 9, a balance 10 and a controller 12, the It is characterized in that: the liquid storage bottle 1 is connected to the titration head 6 through the discharge pipe 2 and the solenoid valve 4, the titration head 6 is placed on the titration cup 9, and the wireless transmission module is fixed on the lid of the titration cup 9 Above, the titration cup 9 is placed on the balance, and the controller 12 is respectively connected to the solenoid valve 4, the balance 10 and the wireless transmission module.

[0026] The wireless transmission module includes indicator electrode 7, micro-motor driven stirrer 8, rechargeable lithium battery, control operation circuit and antenna 5, which can be easily fixed on the titration cup cov...

Embodiment 2

[0032] The liquid discharge pipe 2 adopted is a pneumatic liquid discharge pipe, that is, gas is filled in the liquid storage bottle 1, and the titration solution in the liquid storage bottle is pressed into the liquid discharge pipe by air pressure. All the other are with embodiment 1.

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Abstract

The invention relates to an electrically-controlled dropwise adding system for inductive gravity metering. The electrically-controlled dropwise adding system comprises a liquid storage flask (1), a liquid discharge tube (2), an electromagnetic valve (4), a titrating head (6), a wireless transmission module, a titrating cup (9), a balance (10) and a controller (12); the liquid storage flask (1) is connected with the titrating head (6) through the liquid discharge tube (2) and the electromagnetic valve (4), the titrating head (6) is arranged on the titrating cup (9), the wireless transmission module is fixed to a lid of the titrating cup (9), the titrating cup (9) is arranged on the balance, and the controller (12) is connected with the electromagnetic valve (4), the balance (10) and the wireless transmission module separately. Compared with the prior art, the electrically-controlled dropwise adding system has the advantages of being simple in structure, low in failure rate, higher in precision, small in dead volume, capable of saving a standard titrating solution for washing and replacing and the like.

Description

technical field [0001] The invention relates to a titration device, in particular to an electronically controlled dropping system for gravity induction metering. Background technique [0002] A common automatic titrator uses a piston-type liquid filling tube as a titration part. In this device, the signal collected by the indicating electrode is input to the controller, and the controller outputs an electrical signal to the stepping motor, which drives the piston to move forward and backward quantitatively for suction or drop operation, and the consumption volume of the titration solution is determined by the stroke of the piston . Its disadvantage is that the mechanical part is more complicated, prone to failure, and it is not easy to clean when changing the titration solution, and it needs to consume a large amount of standard titration solution. [0003] Chinese patent application 201410113812.7 discloses a hanging mass titration device, which includes an electronic bal...

Claims

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Application Information

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IPC IPC(8): B01L3/02G01N31/16
CPCB01L3/02G01N31/16
Inventor 冷远鹏张小沁商照聪包剑李铭恩
Owner SHANGHAI RES INST OF CHEM IND
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