Intelligent circuit resistance tester

KDHL-600AintelligenceCircuit resistance testerProduct features

oneKDHL-600AintelligenceCircuit resistance testerMade using high-power switching power supply technology and refined electronic circuits. It is a specialized testing instrument for high and low switches, cable wires, and weld contact resistance. Its current adopts national standardsGB736The recommended standard DC can measure the resistance value of the test sample under standard current conditions. This instrument has small size, light weight, and resistance toDry * capableFeatures such as strong force, high precision, easy operation, and protective function *.

II KDHL-600AintelligenceCircuit resistance testerProduct features

1. Color touch screen:800×480High definition color7Inch touch screen, human-machine dialogue, high-speed thermal printer.

2. Multi current output:Adopting * power technology, it can continuously output high current for a long time,Multi current gear output. can be set1-3Test at different current levels and automatically calculate the average value.

3. Display multiple types of data:Display resistance, voltage, current, resistivity, and display the resistance value converted to standard temperature.

4. Automatic over limit alarm:Set the upper limit of resistance, and automatically generate a test state if the resistance value is qualified, exceeded, or invalid.

5. Can be tested for a long time:You can set the measurement time from0-9999SCan work for a long time. Built in cold air cooling, automatic thermal protection for switch power supply.

6. High precision measurement:Used precision instrumentation operational amplifiers and high-precision quadruple integralsA/Dconverter.

7. *System chip:Using high-performance technology32Position*ARMThe chip automatically switches the amplification factor based on the signal size during measurement, ensuring the accuracy of the product's testing.

8. Built in calendar clock:Built in calendar clock provides a time basis for printing and saving data.

9. DC constant current source function:Can output0Maximum current, built-in step-by-step current rise test, quite a bit buy a * DC constant current source, one machine for multiple uses.

10. Massive storage of experimental data:This machine is equipped with large capacity storage, capable of storing massive amounts of data. It has data storage and browsing functions, as well as power failure protection function.

11. UExport test data from disk:equipped withUDisk export data function, exportexcelDocument.

12. standardModbus-RTU：equipped withRS232Interface (optional change to)RS485）The communication protocol is a standardModbus-RTU.

13. Computer control and data upload:equipped withRS232The upper computer can control, upload, and generate communicationword/excelDocument.

14. Bluetooth control and data upload:Standard Bluetooth function, equipped with Android BluetoothAPP, can control, upload, and generatewordDocument.

15. Line control operation, convenient for assembly line operation:Wire control mode (optional), can be equipped with an external one line switch (closed)/Disconnect) Control Test/Interruption, if the resistance exceeds the limit, the output of the empty node can light up the alarm light.

16. Wireless remote control, fast and convenient:Optional remote control (optional), one click test, one click interrupt test, customizable remote control to display test status.

17. Temperature compensation automatic conversion resistance:It can preset the temperature and automatically convert the resistance value at standard temperature. Temperature sensors (optional) can also be used to measure the temperature.

18. Easy switching of background color:You can set the screen color, which can be changed to blue background or black background for graphics. You can also set the background brightness, standby brightness, and standby time

19. Built in training materials:The screen is equipped with various wiring methods to guide on-site use.

20. Chinese input experiment information:It is possible to input relevant sites, equipment, personnel, notes, etc. in Chinese for easy identification and storage of test data, as well as for easy identification and printing of test data.

21. High current wire quick connection:The connection interface of the high current wire with * can be inserted and rotated quickly and conveniently.

22. Multiphase function optionalThe standard configuration is single-phase,It can be optionally equipped with a dual phase testing device (specialized for conductor resistance testing) or a three-phase testing device.

III KDHL-600AintelligenceCircuit resistance testerTechnical Specifications

4 KDHL-600AintelligenceCircuit resistance testerworking principle

intelligenceCircuit resistance testerAdopting the principle of current voltage method testing, also known as four wire method testing technology, the principle block diagram is shown in the figure1

picture1 Test schematic diagram

Through the current source“I+TheI-Two ports (also known asIType mouth), supplying the measured resistanceRxCurrent, the magnitude of the current has an ammeterIRead out,RxVoltage drop at both ends“V+TheV-Two ports(also known asV型口)Take it out and use a voltmeterVRead it out. By analyzingITheVBy measuring, the resistance value of the measured resistor can be calculated.

5 KDHL-600AintelligenceCircuit resistance testerPanel description and wiring

picture2　

Figure 2 is a reference image of a standard single-phase, please refer to the actual product.

Grounding post:The connection end that connects the earth.

Power supply socket:accessAC220VPower supply, switch, with fuse, and power indicator light on the switch.

Terminal:The terminal block has four terminals, external2Connect a thick terminal to the current wire, inside2Connect a thin terminal to the voltage wire. Please connect the wires uniformly in red and black thickness, with red indicating positive and black indicating negative.

Touch color LCD: 800X480The pixel dot matrix touch color LCD screen is very clear in both sunlight and dark environments.

Thermal printer:The printer is a thermal printer, and thermal paper is divided into front and back sides (one side can be typed, the other side cannot). The printed content can only be retained on thermal paper for about three months and cannot be used for archiving.

RS232interfaceRS232It is a serial communication interface connected to a computer, and the standard configuration isRS232Interface (optional change to)RS485）The communication protocol isModbus-RTU Standard protocol（9600-N-1）We needPCThe upper computer and communication protocol can be obtained for free by contacting the manufacturer, and are not randomly included.

USBinterfaceThis interface is used for insertingUDisk (cannot be used to connect to a computer), can export test data files.

GPIUniversal Interface：GPIThe universal interface is used to connect temperature sensors, or external wiring control and alarm lights.

Notes:There are some brief prompts and installation wiring diagrams.

Bluetooth interface:Bluetooth can connect to computers, and this device has Bluetooth for Android systemAPPWe needAPPYou can contact the manufacturer to obtain it for free, it is not randomly included