Verification and calibration device for dissolved oxygen tester

A technology for calibrating devices and measuring instruments, applied in the direction of testing water, material inspection products, etc., can solve the problem of no verification equipment, etc., and achieve the effect of uniform temperature, convenient water intake and drainage

Pending Publication Date: 2020-01-14
HENAN PROVINCE INST OF METROLOGY
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, there is no corresponding testing equipment on the market

Method used

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  • Verification and calibration device for dissolved oxygen tester
  • Verification and calibration device for dissolved oxygen tester
  • Verification and calibration device for dissolved oxygen tester

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Embodiment Construction

[0021] The present invention will be further described in detail below in conjunction with the accompanying drawings.

[0022] Such as figure 1 , figure 2 and image 3 As shown, a dissolved oxygen measuring instrument verification and calibration device includes a housing 1, a constant temperature water tank 2, a detection water tank 3, a heater 4, a pressure sensor 5, an outer tank temperature sensor 33, an inner tank temperature sensor 6, and a floating cover for the detection tank 7. Anaerobic water tank floating cover 32, outer tank liquid level gauge 9, water filling and discharging device, aeration device, control box 10 and touch screen display 11, said housing 1 is provided with a constant temperature water tank 2 with an upper end opening, so The above constant temperature water tank 2 is provided with a detection water tank 3, and the detection water tank 3 penetrates into the constant temperature water tank 2 from the upper opening of the constant temperature wat...

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Abstract

The invention relates to a verification and calibration device for a dissolved oxygen tester. The device comprises a shell, a constant-temperature water tank, a detection water tank, a heater, a pressure sensor, an inner tank temperature sensor, a detection water tank floating cover, an inner tank liquid level meter, an outer tank liquid level meter, a water charging and discharging device, an aeration device, a control box and a touch screen display; the constant-temperature water tank is arranged to provide a constant-temperature environment for calibration of the dissolved oxygen tester; the hot water in the constant-temperature water tank is used for heating water in the detection water tank to a set temperature; the atmospheric pressure is detected by the pressure sensor; the oxygen is introduced into the water in the detection water tank through the aeration device until the dissolved oxygen in the water in the water tank is detected to be saturated; and the concentration of dissolved oxygen in water in the water tank is measured and detected by using a dissolved oxygen sensor of the dissolved oxygen tester to be calibrated, the concentration is compared with the standard value of dissolved oxygen under the temperature and atmospheric pressure in the calibration procedure of the dissolved oxygen tester, and the concentration indicating value error of the dissolved oxygentester to be calibrated is calculated.

Description

technical field [0001] The invention relates to the technical field of metering and calibrating equipment, in particular to a calibrating and calibrating device for a dissolved oxygen measuring instrument. Background technique [0002] Dissolved oxygen refers to oxygen dissolved in the molecular state of water, and dissolved oxygen is an indispensable condition for the survival of aquatic organisms. One source of dissolved oxygen is when the dissolved oxygen in the water is not saturated, the oxygen in the atmosphere penetrates into the water body; the other source is the oxygen released by the plants in the water through photosynthesis. Dissolved oxygen changes with changes in temperature, air pressure, and salinity. Generally speaking, the higher the temperature, the greater the dissolved salt, and the lower the dissolved oxygen in water; the higher the air pressure, the higher the dissolved oxygen in water. In addition to being consumed by reducing substances such as sul...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N33/18
CPCG01N33/18
Inventor 李博刘斌杰王晓伟陆进宇胡博许建军贾会何璐红李莺张霞袁晶杨涛涛王韩朋袁晓丽
Owner HENAN PROVINCE INST OF METROLOGY
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