Fully automatic calibration device and calibration method for ph controller
A technology of calibration device and controller, applied in program control, computer control, general control system, etc., can solve problems such as high error rate and low efficiency
Active Publication Date: 2019-08-13
杭州美仪自动化有限公司
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Problems solved by technology
Most of the pH controllers on the market are manually assembled, wired, and calibrated, which is inefficient and has a high error rate.
Method used
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[0051] The present invention will be further described below in conjunction with accompanying drawing.
[0052] A fully automatic calibration device for a pH controller, including a touch screen 1, a calibration module, a calibrator 2 and an offline programmer 3. Calibration module includes central processing circuit 4, power supply voltage stabilization circuit 5, standard voltage switching circuit 6, pH controller power supply circuit 7, pH controller communication circuit 8, calibrator communication circuit 9, touch screen communication circuit 10 and pH controller switching Circuit 11. The pH controller switching circuit 11 includes a voltage control circuit 11-1, a current control circuit 11-2, a programmer control circuit 11-3 and a pH controller communication control circuit 11-4. There are six pH controller switching circuits 11 in total. Each of the six pH controller switching circuits 11 controls the calibration of a pH controller 12 to be calibrated. The touch sc...
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The invention discloses a pH controller automatic calibration device and a calibration method thereof. The existing pH controllers are all manually assembled, wired and calibrated with low efficiencyand high error rate. The pH controller automatic calibration device provided by the invention comprises a touch screen, a calibration module, a calibrator and an offline burner. The calibration modulecomprises a central processing circuit, a power supply voltage regulator circuit, a standard voltage switching circuit, a pH controller power supply circuit, a pH controller communication circuit, acalibrator communication circuit, a touch screen communication circuit and pH controller switching circuits. Each pH controller switching circuit comprises a voltage control circuit, a current controlcircuit, a burner control circuit and a pH controller communication control circuit. The total number of pH controller switching circuits is n. According to the invention, the switching between the standard voltage output by the calibrator and the positive and negative connection of the voltage input end of a pH controller to be calibrated is realized through the combined action of two relays.
Description
technical field [0001] The invention belongs to the technical field of pH controller calibration, and in particular relates to a pH controller automatic calibration device and a calibration method thereof. Background technique [0002] With the rapid development of modern industry, the demand for industrial field instruments is increasing, and the output of pH controllers for measuring water quality is also increasing. Components have individual differences. Therefore, a standard source must be used to calibrate the pH controller before leaving the factory. Most of the pH controllers on the market are manually assembled, wired, and calibrated, which is inefficient and has a high error rate. Therefore, it is urgent to design an efficient and highly automated calibration device. Contents of the invention [0003] The object of the present invention is to provide a fully automatic calibration device and calibration method for a pH controller. [0004] The invention relate...
Claims
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IPC IPC(8): G05B19/042
CPCG05B19/0423G05B2219/25257
Inventor 徐冬邓泽微丁程范光兴
Owner 杭州美仪自动化有限公司