Professional & Reliable Power Monitoring Solutions
The device features a technologically advanced 10/100M adaptive Ethernet communication interface and a built-in IP protocol stack, enabling seamless long-distance data transmission over both the enterprise intranet and the Internet. The Net ChromTM workstation, which can be optionally selected with the instrument, supports the simultaneous operation of multiple chromatography systems, enables data processing and system control, simplifies document management, and minimizes both laboratory investment and operating costs for users. The instrument employs a multi-processor parallel operation mode, supporting up to four detectors installed simultaneously; it features a modular design that is intuitive and facilitates easy replacement and upgrading. The state-of-the-art microcomputer temperature control system offers high temperature control accuracy, exceptional reliability, and superior anti-interference performance; it features six fully independent temperature control channels supporting 16-stage programmed temperature programming, enabling the device to handle a wider range of sample analyses; the temperature control zones can be freely named by the user for ease of operation; the automatic rear-door opening system for the column oven enhances low-temperature control precision and accelerates heating/cooling rates. The instrument can be optionally equipped with an advanced Electronic Flow Controller (EFC) or an Electronic Pressure Controller (EPC) to enable digital control, which significantly enhances the reproducibility of both qualitative and quantitative results. This fully microcomputer-controlled keyboard features a user-friendly operating system with simple and convenient operation; it incorporates an automatic detector recognition technology. The device supports fault diagnosis and power-off data protection functions, and can automatically store preset parameters. The instrument features a built-in low-noise, high-resolution 24-bit ADC circuit, along with baseline storage and baseline subtraction functions. This device is designed for collecting chromatographic signals and performing data processing, and is compatible with operating systems such as Windows XP, Windows 2000, and Windows 7. It reads sampled data from CDF files that comply with the A/A (American Association for Applied Chemistry) standard and can integrate seamlessly with chromatography workstations from manufacturers including Agilent and Waters. It features a standard MODBUS/TCP interface, enabling convenient integration with DCS systems.
This instrument features a three-in-one design with a 5.4-inch LCD display and a user-friendly Chinese (or English) menu interface. It includes temperature and humidity measurement capabilities, as well as a clock display function. The operation is simple, with automatic execution of all procedures—including voltage step-up, holding, stirring, resting, calculation, data storage, and print output—without manual intervention. The device incorporates an automatic data storage function that saves test results upon power loss. It is equipped with over voltage, over current, limit, and grounding alarm functions to ensure the personal safety of operators. The unique waveform calibration function eliminates interference from harmonics during accurate measurements. The instrument employs dual CPU and PLC control systems to ensure stable and reliable operation. It features a RS-232 interface and Bluetooth functionality, facilitating seamless data transmission to computers; the device also includes RS-232, USB, and Bluetooth ports along with wireless data transfer capabilities.
The integrated three-or six-bottle design is suitable for determining the acid value of transformer oil or steam turbine oil; it automatically performs all operations—including the addition of the extraction agent, neutralization titration and endpoint detection, acid value calculation, data storage, and print output—without requiring users to prepare the extraction solution, neutralization solution, or other working solutions manually; the average testing time per oil sample is approximately 2 minutes; the device features a full Chinese-language resistive touch screen with vibrant, elegant displays, accurate parameter input response, and stable, reliable display performance; it includes a power-off storage function that can store up to 100 most recent test results; a standard automatic acid calibration function minimizes systematic errors and ensures the accuracy of the measurement results; a high-capacity, efficient CO₂ and water purification system ensures the stability of the neutralization solution concentration; the equipment supports dual programming modes, allowing users to select the appropriate testing program based on the oil sample type; it is equipped with a USB or wireless transmission interface for easy connectivity to a computer.
This instrument employs a Wien bridge sine wave oscillator constructed using high-precision, high-speed operational amplifiers; it features low distortion and ease of calibration. Under non-equilibrium conditions, it measures the interfacial tension of various liquid–gas and liquid–liquid phases. The operation is simple, the device operates stably and reliably, and it automatically calculates the interfacial tension value. It is suitable for determining the interfacial tension of liquid products in the petroleum, chemical, power, and pharmaceutical industries. The instrument features a newly improved sealed electromagnetic force balance sensor, which enhances both response speed and linearity; this new sensor requires only a single calibration point, resolving the issue encountered with the previous generation of sensors, which necessitated multiple calibration points to ensure linearity and accuracy. The internal microprocessor also enables bidirectional compensation based on the operating temperature, using 25°C as the reference point; the compensation range is sufficient to accommodate the ambient temperatures found in all laboratories.
The vacuum level tester employs a single-chip microcomputer as its main control unit, enabling fully automated testing procedures. In principle, this instrument departs from the calibration method used in similar domestic and international products – which relies on peak current – and instead utilizes ion charge for calibration. This approach ensures greater accuracy based on physical principles and effectively suppresses interference from the pulsed power supply during testing, ensuring stable and reliable operation. The instrument employs a two-stage sampling method to eliminate leakage currents arising from environmental factors, and it incorporates a mechanism to identify vacuum interrupter chambers that are completely evacuated during the measurement process, thereby achieving accurate measurement of the vacuum interrupter chambers installed on the entire device. Currently, the instrument contains 35 standard measurement curves for vacuum interrupter chambers, covering the vast majority of chamber types available both domestically and internationally. The instrument is known for its reliable performance, elegant design, and user-friendly operation.
This 32-bit high-speed digital signal processor represents China's first domestically developed 32-bit high-speed 150 MHz DSP, paired with AD公司的 high-performance 6-channel 16-bit ADC, to successfully create a multifunctional wide-range digital multiplier. The design utilizes floating-point arithmetic to ensure computational accuracy. The simultaneous measurement of active and reactive power or the error ratio between two energy meters doubles the operational efficiency compared to traditional calibration methods. The wiring simulation function allows users to simulate various field wiring configurations from an office environment—even in the absence of actual voltage or current signals—and obtain the corresponding wiring results. This feature can serve as a training tool for cable verification, enhancing the field personnel's cable inspection skills. The 5A clamp error self-test instrument can generate a 5A current signal and apply it to the 5A clamp to measure its measurement accuracy. Solves the issue of error variation in the 5A clamp meter after prolonged use. It allows users to monitor the clamp meter's closed-state status at any time and reminds the operator to clean the clamp mouth. Automatic electricity meter number entry (optional feature) supports barcode scanner for automatically entering the electricity meter code. Infrared reading head – automatically reads data from multifunctional electricity meters (optional feature); utilizes RS-485 or infrared optical sensors to retrieve the baseline, peak, flat, valley, and total active and reactive power measurements from multifunctional electricity meters; supports the DL645 national standard protocol. Ultra-wide current measurement range (500× current range) ensures accurate measurement performance; 10,000× current display range. Minimum starting current of 1 mA. High-voltage supply with high-precision timing; wiring can be identified even under no-load conditions. The electrical energy accumulation function can be used to verify electricity meters that do not output any electrical energy pulses, or to test energy-saving performance indicators. The device comes with a 2GB memory card.
1.This circuit resistance tester is developed in compliance with the SD301 departmental standard, as well as the DL403-91 and GB763 national standards, which require that the DC current used for measuring the main circuit resistance of high-voltage circuit breakers shall not be less than 100 A. Utilizing high-frequency switching power supply technology and digital circuit technology, this new-generation device features a compact size, lightweight design, and a constant-current-source output with high accuracy; it is equipped with an LCD display and a printing function, offers simple operation, and is highly portable, providing convenient measurement capabilities for professionals performing main circuit resistance measurements on high-voltage circuit breakers. This circuit resistance tester is based on the fundamental DC circuit calculation formula R = V/I and the principle that the current is equal throughout a series circuit. It employs a four-wire connection method; in the R = V/I calculation formula implemented by the instrument's microcontroller, the "V" represents the voltage drop across the load, which is divided by the current ("I") flowing through the circuit. The resulting value of "R" corresponds to the resistance of the load itself, excluding the resistance of the test leads. As a result, the test results are accurate—unlike those obtained using a multimeter or other resistance testers.
