Product Introduction

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SPMK3001Automatic calibration system for group furnace thermocouple and thermal resistance (group furnace)Automatic temperature calibration system）It is composed of a computer, printer, six and a half or seven and a half high-precision digital multimeter, two-stage low potential scanning controllerRS485The automatic control and testing system composed of interfaces, high-precision temperature control instruments, water tanks or oil tanks, thermocouple calibration furnaces, and specialized software is a new type of intelligent measurement standard device that integrates computer technology, micro electrical measurement technology, and automatic testing technology. This system is used for automatic calibration of various working thermocouples and thermistors, and can control them simultaneously1-4Taiwan Inspection Furnace and1Water tank or oil tank (thermocouple and thermal resistance can be calibrated simultaneously), each calibration furnace can be calibrated once1-10Thermocouples, each water tank or oil tank can be calibrated once1-10Thermistors can meet the calibration requirements for large quantities of thermocouples and compatible thermal resistors in a short period of time. The system adopts multiple technological innovation achievements of our company, and its software and hardware are independently developed by our company with completely independent intellectual property rights. The system hardware structure adopts a standardized structure, which facilitates system maintenance and upgrading, and has convenient and reliable system scalability. The system has a series of characteristics such as advanced design, reasonable structure, complete software functions, easy operation, accurate and reliable value transmission, strong anti-interference ability, and flexible configuration. This system can achieve functions such as automatic data collection, processing, expression, transmission, storage, document management, and automatic generation of calibration certificates, greatly improving work efficiency.

Main features of the system:

Low potential scanning controller

◆The switch substrate adopts large-area gold-plated material, which has high reliability and a service life of more than10Year.

◆Excellent switching performance, ideal, consistent, and stable parasitic thermoelectric potential indicators,After multiple switches are combined in a circuit, the total parasitic thermoelectric potential is less than0.4μV.

◆Specially processed low potential terminal blocks.

Temperature controller

◆ The temperature control system adopts independently developed technologyRS485Intelligent communication functionPIDThe controller is used as a temperature controller. advancedPIDThe self-tuning algorithm effectively prevents overshoot and undershoot phenomena during temperature control, achieving a natural and smooth temperature transition. It can reduce unnecessary waiting time and achieve ideal constant temperature indicators.

◆supportPIDThe remote control self-tuning of parameters on the upper computer enables customers to easily and freely complete the self-tuning of temperature control equipment parameters, and supports modifying and updating instruments in the upper computerPIDControl parameters and linear correction parameters to ensure the optimal temperature control effect of the system.

◆Using communication zero crossing triggerSSRAs a power output unit.

◆The temperature control stability of the verification furnace is better than0.2℃/10minThe temperature control stability of the sink or oil tank is better than0.04℃/10min.

RS232andRS485communication interface

The data acquisition equipment of this system adopts a six and a half or seven and a half high-precision digital multimeter, usingRS232Connect to a computer,

The scanning controller, water tank, oil tank, and calibration furnace all useRS-485Industrial fieldbus, transmission distance can reach1200mEasy to operate and highly reliable.

Standard chassis and cabinet

The system hardware structure adopts a standardized structure, with a beautiful and elegant appearance, which is convenient for system maintenance and upgrading.

systems software

Introduction

The verification system software can be installed in ChineseWin7、Win8、Win8.1、Win10Wait for the operating system to run,StandardWindowsMenu, toolbar, status line, dialog box, user interface for multiple document windows, etc.

Software Features

◆Can be automatically verifiedR、S、B、K、N、J、E、TUse thermocouples for equal division number work. Allow thermocouples with different division numbers to be calibrated, data processed, and result judged in the same calibration furnace.

◆Verifiable0-10mA、4-20mA、1-5VIntegrated temperature measurement transmitter for output.

◆VerifiablePt10、Pt100、Cu50、Cu100Thermal resistance（AA、A、B，CThis includes two-wire, three wire, and four wire heating resistors.

◆Calibration of low-cost metal thermocouples, temperature at the calibration point can be automatically provided by the program and specified in the calibration regulations(Or recommended)In addition to the temperature point, users are also allowed to reset the calibration point based on the actual usage temperature of the tested couple, which can be set1-10A checkpoint.300℃When calibrating thermocouples, second-class standard platinum resistors can be used instead of second-class standard glass meters to achieve automatic calibration.

◆Thermocouple systems can be controlled separately1～4Tai Re electric furnace, plus1Simultaneous calibration of sink or oil tank equipment, maximum processing per batch10Only tested, can be tested simultaneously40Only thermocouples,10Only thermal resistance effectively improves the utilization rate of constant temperature equipment and enhances work efficiency.

◆Can be addressed separately4Thermocouple calibration furnace and1The constant temperature bath (water tank or oil tank) is used for automatic temperature control, automatic collection of test data, data processing according to the calculation method specified in the calibration regulations, printing of calibration records and certificate data, and saving of historical records. Automatically complete the continuous calibration work of each temperature point in each calibration furnace. After setting the parameters, the calibration task is automatically completed and saved without manual operation.

◆provide2There are optional reference terminal processing methods, which can use set room temperature compensation for the reference terminal, or use timed automatic acquisition to obtain the reference terminal temperature.

◆The display interface is beautiful and convenient, with real-time status control display. Real time data curve display and data collection use statistical mean filtering to ensure the validity of the data and effectively remove accidental and gross errors.

◆After the calibration is completed, the calibration furnace is automatically set to standby mode, and the data is automatically saved after processing. The calibration data has real-time storage function. If there is a sudden power outage or if someone manually exits the program during the verification process, and the verification program is restarted, the previous verification can be continued, and the verification can be divided into points and equipment/Calibration.

system structure

Communication between computers and various hardware components

The connection between computers and high-precision digital multimetersRS232Communication, computer and other hardware modules are usedRS485Industrial fieldbus communication, communication distance can reach1200mThe route is simple and reliable.

Automatic scanning switch data acquisition

The electrical signals of the reference temperature, standard resistance, and verified resistance of each standard thermocouple, verified thermocouple, and thermocouple of each verification furnace are passed through two levels“Low potential scanning switch”Send to high-precision digital multimeter, which can collect any standard or tested potential value in a time-sharing manner.

automatic temperature control system

Using self-developed intelligencePIDTemperature controller, with an accuracy level of0.1Grade. beltRS485Interface, usingMODBUSCommunication protocols communicate with computers and accept their control.