Product Introduction

XL901A DC Standard Energy Meter Considering Dynamic Characteristics Designed according to "JJG-842-2017 Electronic DC Meter Verification Regulations" and "JJGXXXX-20XX DC Standard Energy" (draft for approval), developed to meet the demand for measuring dynamic characteristic ripple in DC. Based on the inability of existing DC standard energy meters to measure dynamic characteristic ripple, the XL901A DC standard meter considering dynamic characteristics can measure the DC component, ripple component, and the total power and energy of the DC component plus ripple component in dynamic characteristic DC. It can serve as a standard voltmeter, standard ammeter, small signal voltage standard meter, direct or indirect standard power meter, and standard energy meter. It meets the measurement requirements for amplitude, power, and energy of DC voltage, current, and small signal voltage with accuracy classes of 0.05/0.02/0.01. It can be used as a DC standard device for DC measurement and calibration, suitable for regional metrology centers, national metrology centers, research institutions, etc.

Features

• High Measurement Accuracy: Power and Energy Measurement Accuracy Class 0.05/0.02/0.01 Voltage and current measurement accuracy class 0.02/0.01/0.005, suitable for DC measurement and calibration.
• Wide Measurement Range: Measurement Range 10mV-1200V, 100uA-600A, 100uV-12V Meets the testing and calibration requirements of DC energy meters, DC shunt verification devices, DC verification devices, and other DC and dynamic characteristic DC measurement devices.
• Automatic Current Range Switching, High Integration: 100uA-120A Uses a pair of input terminals with full-range automatic range switching. Large current measurement from 100A to 600A uses another set of terminals, ensuring safety and reliability without the need to purchase additional large current sensors, achieving high integration.
• DC and Dynamic Characteristic DC Measurement: Adopts Ripple Precise Tracking and Separation Algorithm Capable of measuring the DC component, ripple component, and the total power and energy of the DC component plus ripple component in dynamic characteristic DC.
• Voltage and Current Synchronous Sampling: DC voltage and DC current (including direct and indirect current) use synchronous sampling technology. Under the control of a synchronous clock, voltage and current values at the same moment are sampled to calculate power and energy, eliminating measurement errors caused by asynchronous sampling of DC voltage and current.
• Temperature Drift Compensation Function: Built-in temperature measurement circuit monitors the device temperature in real time and compensates for temperature drift based on the measured temperature.
• Energy Accumulation Error Comparison Method: In addition to supporting the standard meter method for energy verification, it also supports the comparison method of energy accumulation error, facilitating verification, traceability, and calibration of charging pile calibrators.
• Low Input Impedance of Current Port: Voltage at current input port across full range <0.65V Input impedance, 100A range <3mΩ 600A range <0.25mΩ 。
• Safe and Reliable, Flexible Use: Voltage and Current (including direct and indirect current) fully electrically isolated Regardless of whether the measured voltage and current are isolated, or whether voltage and current share a high or low end, accurate measurement can be achieved. ，都能实现准确测量。
• Measurement Value Statistical Analysis: Can statistically analyze the maximum, minimum, variation, and standard deviation of amplitude and power, helping to analyze short-term stability and trends.
• Human-Machine Interaction: Equipped with a large-size touch display screen Clear and intuitive value display, equipped with RJ45, RS232, USB interfaces, convenient for building automated test systems.

Technical Specifications

AC Voltage and Current Measurement Accuracy: Class 0.2.

Power/Energy Measurement

Power Measurement Range: Combination of voltage measurement range and current measurement range;

Measurement Uncertainty: Voltage measurement uncertainty + current measurement uncertainty;

Ripple Impact on DC Error Offset: At power factor 1.0, limit ±(0.002%RD + 0.0005%RG) and does not exceed allowable error limits.

Output Pulse: Pulse frequency <10KHz, TTL level (5V), load capacity ≤5mA;

Input Pulse: Pulse frequency <5KHz (class 0.05) [10KHz (class 0.02/0.01)], TTL level (5V), load capacity <1mA.
 

Selection Guide