Water bath thermostat for multi-parameter water quality testing meter

Abstract

The invention discloses a water bath thermostat for a multi-parameter water quality testing meter. A constant-temperature water inlet pipe is mounted on a stepping motor peristaltic pump, a vent needle is mounted on the constant-temperature water inlet pipe and positioned in a container, a sealing cover is fixedly mounted on the top surface of the container, a thermosensitive temperature sensor is mounted in the container and connected with a temperature controller, the temperature controller is connected with a temperature driver, the temperature driver is connected with a right semi-conductive refrigerator and a left semi-conductive refrigerator, a flow detection cell is mounted in the container, and the bottom of the container is connected with a DC motor peristaltic pump through a constant-temperature water outlet pipe. The water bath thermostat has the thermal characteristics of strong heat convection capability, strong heat storage capacity and high heat capacity, the heating time of a tested water sample solution is greatly shortened, water bath heating is less influenced by environmental factors, heating is uniform and thermostatic control can be easily realized.

Description

technical field [0001] The invention belongs to the technical field of a water quality detector, and in particular relates to a water bath constant temperature device used for a multi-parameter water quality detector. Background technique [0002] The multi-parameter water quality detector needs to be pre-treated before testing the sample. Since the temperature has a great influence on the chemical reaction, it is necessary to design a good constant temperature system in the testing room to ensure that the sample reacts at the same temperature. The constant temperature system of the detection room plays an important role in the whole pretreatment process of the sample. Only in the same environment can the repeatability and accuracy of the instrument detection be guaranteed. The constant temperature heating methods often used in modern instruments mainly include air bath, water bath, metal direct heating and other methods. However, the existing air bath constant temperature ...

AI Technical Summary

Problems solved by technology

However, the existing air bath constant temperature method has low heat storage capacity and is susceptible to external interference; the metal constant temperature can directly transmit the temperature to the detection pool in a relatively fast time, but its heat dissipation is fast, difficult to control, and consumes a lot of energy.

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