I. Overview

The HG-500A welding machine field calibrator (hereinafter referred to as the calibrator) is based on the calibration regulations JJG124-2005 "Calibration Regulations for Ammeters, Voltmeters, Power Meters and Resistance Meters",

Calibration equipment designed in accordance with the requirements of JJG (Military Industry) 69-2015 "Verification Procedures for DC Standard Current Sources" and JJG (Military Industry) 70-2015 "Verification Procedures for AC Standard Current Sources".

Mainly used to verify the voltage, current meter and output of various electric welding machines (such as AC manual arc welding machines, argon arc welding machines, carbon dioxide shielded welding machines, DC welding machines, submerged arc welding machines, spot welding machines, etc.) accuracy.

Generally, welding machines work under high current conditions, and the disassembly and assembly of the voltage or current meter are complicated. The accuracy of the welding machine indicator instrument will directly affect the welding quality. Our company designed a calibrator based on this characteristic of the welding machine, which can measure the cross current on site. DC current 500A (the current size can be customized according to user requirements), AC and DC voltage 1000V, and it can accurately display the waveform of the output voltage and current of the welding machine. There is no need to disassemble or assemble the welding machine instrument. It has high accuracy, good stability, safe and convenient use, and is an ideal calibration equipment for welding machines.
2. Technical characteristics

2.1 The calibrator is a six-and-a-half-digit display, highly stable, safe and reliable on-site measurement instrument. The human-computer interaction interface adopts LCD color touch screen display, which can display AC and DC current, voltage, waveform and other parameters on the same screen. The content is clear and concise, and the operation is simple.

2.2 The calibrator uses advanced circuits and high-precision integrated circuit chips dedicated to instrumentation to ensure the measurement accuracy and reliability of the calibrator.

2.3 The calibrator has a wide measuring range and adopts imported sensors. The instrument has good thermal stability and high reliability under high current conditions.

2.4 The calibrator adopts a variety of software and hardware anti-interference measures and digital compensation technology to prevent the instrument from being affected by the harsh environment on site when in use.

2.5 The calibrator can perform online on-site calibration of voltmeters, ammeters and voltage and current output waveforms on welding machines below level 0.5. It is lightweight and easy to carry.

2.6 The calibrator comes with 2G storage space. It also has a USB interface that can be read from a USB flash drive to save data.

2.7 The size and clamping force of the wiring clamp are moderate, making it easy to plug and unplug and not easy to fall off.
3. Technical indicators

3.1 AC and DC current measurement range: 0~500A, measurement accuracy: ± (0.07% of reading value + 0.03% of full scale)

AC and DC voltage measurement range: 0~1000V, measurement accuracy: ± (0.07% of reading value + 0.03% of full scale)

3.2 Can display AC voltage and current waveforms and DC voltage and current trend graphs, and the measurement frequency can reach 100kHz

3.3 Self-powered, internally equipped with a 24V lithium battery pack with a capacity of 5AH, which can continuously work for more than 4 hours.

3.4 Ambient temperature: -25℃~50℃, relative humidity: ≤85%

3.5 Weight: 8Kg