Professional Instrument Equipment and Testing Solution Supplier - JETYOO Industrial&Jianyou (Shanghai) Measuring Instrument Co., Ltd, a former Agilent product technical support engineer-Jian JETKEITHLEY Product Technology Application Engineer-RongyooA trade agency co founded in 2011 with a focus on technical support, aiming to break through the old and establish a new one! Fill the gap of most imported instrument and equipment manufacturers only setting up sales points in China, with weak or no technical support, and agent distributors only specializing in sales, not professional in pre-sales technical Q&A/testing plans, and not professional in after-sales training/maintenance calibration. Our technical sales engineers all have a bachelor's degree or above and over 10 years of experience in the testing industry. With our advanced and unique business philosophy, we specialize in providing instruments and equipment, testing solutions, technical training, and maintenance and measurement services to Chinese users. We are a leading company in the East China region of ShanghaiTechnology orientedA comprehensive service provider for instruments and equipment.

German Gaomei Power Analyzer ZES ZIMMER LMG641Establish a benchmark for power analysis
For over thirty years, ZES ZIMMER has focused solely on high-precision power measurement technology, so we know it's not just about measuring voltage and current. Anyone attempting to measure power using a general data acquisition system will quickly need to face its limitations: how about common mode rejection? Is the test result still reliable when the power factor is 0.01? Is the ground capacitance small enough to resist interference from leakage current? In which frequency range does the manufacturer guarantee the measurement accuracy stated? It can be quickly and clearly understood that only equipment specifically designed for power measurement can truly meet these high requirements. ZES ZIMMER's LMG600 stands out in the market due to its extremely high reliability and comparable performancegoodAccuracy andtallThe bandwidth is all obtainedexcellentIdeal conditions for the outcome.

Multi channel combination suitable for any application
The power analyzer provides different accuracy levels, allowing users to choose the appropriate instrument to complete their work. After all, not all applications require ithighThe precision. Usually, a normal resolution and accuracy are sufficient. Unfortunately, not all measurement applications are like this. The following situation often occurs: different measurement points require different bandwidths and accuracy levels under the same measurement configuration. That's why LMG600 offers three different input modules that can be installed in the same main chassis to ensure that you can customize the measuring instruments needed for your specific application. This low-priced solution can also meet your requirements well, without the need to compromise on low precision or overusing talent.
Measurement of three-phase frequency converter drive motor and internal DC circuit of frequency converter
Measure battery and dual inverter drive motor
Measurement of three-phase frequency converter driven motor
Inverter and internal circuit measurement
Single phase input
Three phase output
Inverter measurement
Single phase input
Three phase output
Three phase power measurement, such as motor
Power efficiency measurement
Analysis of magnetic core loss
High bandwidth and high-precision measurement
For example, high-frequency bearing current, ballasts, high-frequency ferrite core losses, induction heating, ultrasonic waves, etc

Module A
High cost-effective broadband measurement
For example, general laboratory tools, power measurement tools

Module B
High precision measurement for power frequency (50HZ/60HZ) applications

For example, standby power measurement, energy efficiency, magnetic core loss, transformer loss, transformer impedance measurement, household appliances

German Gaomei Power Analyzer ZES ZIMMER LMG641A brand new portable digital high-frequency power analyzer with 4 channels and 3 different accuracies matched to achieve customer satisfactiongoodThe cost-effectiveness and upgradable performance.
The LMG series includes the 450 series, 610 series, 641 series, and 671 series;newThe 671 series can achieve 7 channels and 3 different accuracies matched with each other, providing customers with a solutiongoodThe cost-effectiveness and upgradable performance.
The LMG series power analyzer has a unique dual path architecture, which can achieve torque related fundamental and full spectrum analysisrefinedAnalyze simultaneously to optimize overall efficiency.
Obtain true effective values and harmonic values of narrowband and wideband simultaneously and without confusion in a single measurement
Maximum high-speed sampling rate of 1.2MS/S
The minimum update time for obtaining true valid values is 10ms
Extremely high power measurement accuracy, soil (0.015% of measured value+0.01% of peak range)
Full dynamic range continuously available, current from 500mA to 32A, voltage from 3mV to 1000V
Power measurement from standby power to full load (up to 32A) without changing physical connections
Frequency range from DC to 10MHz
1-4 power measurement modules can be freely configured (or 3 channels+PSI)
The module can be replaced
Gap free sampling, 18 bit A/D converter, with a cycle time of 10ms
Continuously record measurement values and capture all relevant events
The time offset between voltage and current input can be adjusted, with a step size of less than 1ns
The measurement of low power factor and high frequency domain is very importantrefined
Can work reliably even in severe electromagnetic interference environments
Suitable modules for any application
Extremely low ground capacitance of less than 90pF to prevent interference from leakage current


capacity
Dual path
Touch Screen
communication
remote control
LMG641 Details
7-inch, 800 * 480 resolution, quickly read all important menus
DVI/VGA input can be used for external displays or projectors
Real time display of all device functions, remote operation, and data visualization
Brand new GUI interface, smooth operation without thinking

user interface
Built in high-capacity storage media, standard 8GB solid-state drive, can be added with 320G solid-state drive
Even in terms of settingsfastThe cycle can also be used for long-term internal data storage.
Provides outstanding communication capabilities through Gigabit Ethernet, RS232, and optional DVI/VGA, CAN2.0A/B

Star Triangle Conversion
Sampling value
Flicker
SYNC SOURCE
Plug and play measurement
Flexible filters
simultaneity
Script editor
process signal
According to the old C/EN 61000-4-7 standard, harmonic and interharmonic measurements are carried out. The instrument displays up to 1000 times and can be called up to 2000 times through commands (optional). All signal types of speed and torque sensors (analog, frequency signals, such as RS422, TTL or HTL) can be input
Flexible script editing tool for special applications
Convenient calculation of all derivative variables of power analyzer
Simultaneous measurement of voltage, current, power, and harmonics
List or graphical display
The frequency, type, and characteristics of the signal filter can be freely set
Automatic recognition and power supply after connecting the current sensor
Easy connection, no risk of setting errors
Maximum synchronization with 4 signals of different frequencies simultaneously
Measure flicker according to IEC/EN61000-4-15
Directly obtain high-resolution sampling values and harmonic values through the interface
Convert line voltage into phase voltage in a three-phase three wire system and measure the active power of each phase

harmonic
characteristic
Storage&Peripherals
anti-interference
U-I synchronicity
continuity
flexibility
bandwidth
dynamic range
accuracy
Data update rate
Sample Rate
measurement channel
metering
Ground capacitance
A/B/C modules
Module A power accuracy: ± (measurement 1; 0.015% of value+0.01% of peak range) Maximum frequency up to 10MHz
Module B power accuracy: ± (0.05% of measured value+0.02% of peak range), maximum frequency up to 500kHz
Module C power accuracy: ± (0.03% of measured value+0.01% of peak range), maximum frequency up to 10kHz

Warranty period
The 12-month measurement interval ensures low maintenance costs and instrument maintenancegoodAvailable status
24 months from the date of shipment from Germany

C module
Simultaneous measurement of power under two bandwidths, dual path technology - no compromise, beyond doubt
In traditional power analyzers, the measured signal is first subjected to analog processing, and then converted into a digital signal through an A/D converter for processing. The resulting signal can be measured across the entire frequency range, or can be used as the basis for FFT analysis or further digital filtering through an anti aliasing filter. Due to the limitations of A/D converters, some of their inherent drawbacks will be introduced into traditional devices. If the filter is turned on for measurement, to avoid confusion in FFT analysis, wideband values are discarded. If the filter is turned off, strictly speaking, FFT should not be used. If an anti aliasing filter is not used for FFT analysis of the entire frequency range, the calculated values are suspicious and the aliasing error can reach up to 50%. For example, it is easy to find that at least 0.5% of the deviation will be ignored no matter what. Finally, the validity of the results is also questionable when alternating between filtered and unfiltered measurements, as this assumes the condition that the signal does not change over time, which is almost non-existent in reality. In addition, this processing procedure is particularly time-consuming.

All the star measurement methods ultimately proposed were merely unsatisfactory compromise solutions. That's why ZES ZIMMER fundamentally redesigned signal processing and developed a dual path architecture. Simulation processing is the same as traditional measuring instruments, but subsequent digital processing has completely changed. LMG600 is a power analyzer with two A/D converters in two independent signal paths for each voltage and current channel in the world. One is used for unfiltered measurement of wideband signals, and the other is used for narrowband signal measurement of anti aliasing filter outputs. Parallel digital processing of sampled values allows users to simultaneously obtain two measurement values of the same signal without worrying about the risk of confusion. This unique processing avoids the drawbacks of all the methods mentioned earlier, ensuring that it is obtained in the shortest possible timeessenceresult.

Gapless measurement
In the process of strictly monitoring the energy consumption and efficiency of electrical equipment, new standards and regulations are continuously introduced in order to fairly compare products from different manufacturers (such as SPECpower_stsj2008, IEC62301, EN50564). For applications such as office computers, servers, or household appliances that follow the same principle: the process of energy consumption always requires long-term analysis, considering all relevant operating conditions. There may be an order of magnitude difference between minimum load (such as standby) and full load.
sendrefinedMeasurement is very challenging (see 'Measurement of Standby Power Consumption and Energy Efficiency' application report). Some measurements require execution for more than a few hours and are seamless. By selecting a sufficiently wide measurement range, data loss caused by changing the range can be avoided. The high basic accuracy of LMG600 ensures that it also achieves near the low limit of the rangerefinedresult.

Due to minimal delayrefinedmeasure
Nowadays, frequency converters use fast switching semiconductors to improve efficiency, which generates extremely steep voltage edges, resulting in capacitor currents that severely test the insulation of bearings and motors, which may lead to premature failure.

Motor filters (such as dU/dt filters) can attenuate steep voltage gradients, despite the power loss caused by the instantaneous oscillation of the filter's own frequency (usually greater than 100kHz).

The wide bandwidth range of LMG600 and the extremely small delay between voltage and current allow for extremeessenceMeasure the power loss of the filter at this frequency, including longitudinal measurements at low power factor. It is also suitable for high-frequency measurements at 10MHz, which requires the minimum delay between the voltage and current channels to be designed. The delay between the voltage and current channels of LMG600 is less than 3ns, which is equivalent to a phase angle error of less than 1 µ radian at 50Hz. This makes the instrumentsuitableUsed for measuring power loss at low power factors in transformers, reactors, capacitors, ultrasonic generators, etc. No additional options or adjustments are required, and the standard configuration of LMG600 is fully capable of handling this measurement task. Voltage and current sensors are commonly used to measure high-power circuits, and the measurement accuracy can be improved by correcting the phase angle of these sensors.

Satisfy different rangesessencemeasure
Although LMG600 provides an unparalleled wide range of voltage and current, there are always some applications that require special measurement ranges. Whether you need to measure currents of several hundred amperes or voltages of several thousand volts, we have ready-made solutions. We offer a wide range of voltage and current sensors that can work perfectly with the LMG600 high-precision power analyzer, expanding the instrument's measurement range to the desired range. Our plug and play sensors are equipped with a bus system, which allows the LMG600 to automatically recognize and set up. This allows all important parameters, such as transformation factor, delay compensation, last calibration time, sensor model, etc., to be automatically read by the power analyzer and used during the measurement process. In addition, the sensor is powered by LMG600 and no longer requires a separate external power supply.

By using plug and play sensors, users can obtain them without the need for fine-tuninggoodThe result. From the user's perspective, there is no difference between direct measurement and using sensors for measurement. Of course, sensors from other brands on the market can also be used on LMG671.

Powerful interface
In addition to GUI (graphical user interface) and connecting to the device under test itself, data exchange with existing computers and software is the most important in determining how well the instrument can perform its intended tasks. Only instruments seamlessly integrated into the entire system can be fully utilized by users. The high-speed sampling rate of LMG600 inevitably generates a large amount of data. By using the correct system architecture, we ensure that measurement data can be transmitted through high-speed interfaces. Even high-resolution measurement data of all important parameters such as voltage, current, active power, etc. can be quickly transmitted to the connected computer within a few minutes. To meet the various needs of different applications, a series of ports are available for use. In addition to a serial port and gigabit Ethernet, there is also a USB slot for data storage; The instrument can also be equipped with a VGA/DVI output for external connection
Monitor or projector. In addition, two slots can be retrofitted for future interface standards&currently support CAN interfaces that comply with ISO11989-2 (high-speed CAN) standards, supporting CAN standards 2.0A and 2.0B with a speed of 1Mbit/s. By using an integrated synchronization interface, multiple LMG600s can synchronize with each other. This enables measurements involving multiple LMG600s in the same system, or control or connection of LMG600s through oscilloscopes or waveform generators, to have the same time reference. Due to its internal hard drive, the LMG600 even stores measurement values, settings, user-defined measurement parameters, or graphics for future use without connecting to a computer. In terms of storage capacity, users have several options available. The firmware of LMG600 can be quickly and easily upgraded via USB.

Process signal interface
It is often necessary to conduct further measurements beyond electrical parameters in order to make a meaningful overall statement about the performance and efficiency of the tested equipment. Therefore, in order to determine the reliable simultaneity between electrical and mechanical events, it is very important to be able to perfectly synchronize these measurement values and calculate their true effective values through LMG600. A typical application is the analysis of electric drive systems, where torque and speed signals must be measured and called together with electrical parameters. On the contrary, it is also possible that the power analyzer must output measurement results in analog form for further processing, or trigger switch operations that depend on the measured variable or derived variable. To meet all these potential demands, LMG600 offers a variety of different input/output interfaces for analog and digital signals.

Star Triangle Conversion
In a three-phase three wire system, only line voltages V12, V23, V31 and line currents I1, I2, I3 are directly measured. By using the star delta conversion option, the neutral voltage of the three-phase three wire star connection is converted into a phase voltage that is not directly measured, and the corresponding single-phase active power can be obtained. Similarly, the line current of the three-phase three wire delta connection can be converted into phase current. Through these converted values, all other variables, such as harmonics, can be guided. Distortion and imbalance in the power grid or user end can also be obtained. This makes the use of an external, artificial neutral point more cumbersome; Although anyone can use a neutral point at any time, if all relevant adverse conditions are taken into account (such as increased power loss, etc.).

Easy to use - touch screen, buttons, and peripheral devices can be operated freely
To ensure that LMG600 can be used in any situation, universal availability is particularly important. All display modes and settings can be selected through touch screen or button operation, without exception.excellentThe design always connects the buttons to the relevant views and settings options on the screen. Almost no familiarity is required to effectively use the instrument. The graphical user interface guides users directly to the desired numerical value. The true effective value of voltage or current, related harmonics, or energy accumulation can usually be obtained by pressing a button. In addition, user-defined views allow measurement values to be grouped separately, so all parameters are always clear at a glance. This ergonomic operation method saves time and directly contributes to the effective use of LMG600. On the right side of the display screen, there are eight sets of context related two function keys, whose functions always correspond to the same line on the right side of the screen, which is very important for ease of use. Anyone can easily determine the function assigned to the function key at a glance. The design of the dual function key allows for quick configuration of corresponding parameters, eliminating the need for unrelated view switching. When there are questions about functionality and control when operating the instrument, relevant chapters of the operation manual can be displayed at any time.

One click display of important parameters
Flexible grouping settings ensure simple and clear channel relationships
In order to clarify the functional relationship between physical measurement channels correctly, power measurement channels (P channels) can be grouped into so-called groups, which are generally presented as virtual measurement channels or virtual devices outside the physical channels. The logical combination of P channels depends on the number of connections and phases of the analyzed system. Due to the flexibility of LMG600, it can even be configured into unusual and rare configurations, such as phase separated systems and four phase or multi-phase systems, which are both simple and reliable. The requirement is that all channels in the same group have the same fundamental frequency and are the same module (A, B, C). This will avoid minor errors caused by different technical performance of different module types. One benefit of creating a group is that it simplifies the setup of instruments, such as allowing filters that affect all channels within the same group to be set only once. In addition, derived values such as active, apparent, and reactive power of all channels within the group are calculated. When the grouping specifies how channels are logically connected, the wiring will dictate how the input of the measuring device is connected to the measuring circuit, whether it is a star delta circuit or a circuit with a neutral wire. The wiring indicates how the instrument interprets the measurement signal.