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THD
Is a measure of a signal's sum power of all harmonic components to the power of the fundamental frequency.
See Also: Total Harmonic Distortion
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Digital Power Meter (High Accuracy Model)
LS2050
LS2050 digital power meter is a new generation intelligent product which adopts digital sampling technology to analysis of the waveform. It has the following features: • Three windows digital display which reduces reading error, intuitive and convenient • Adopts high speed MCU and high precision A/D to control and measurement • All measured data as virtual value, also suit to signal waveform distortion • Fast test • Equipped with RS232 communicate function, can use upper computer software to carry on remote operation, control and read corresponding data, the test data and waveform could be displayed in the PC, Chinese and English operation interface, high intelligent instrument • This instrument provides two kinds of method to calculate total harmonic distortion (THD), IEC and CSA.
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Digital SINE Controller
DVC-4/8 SINE
RANGE: 2 to 6250 Hz, digitally synthesized.STABILITY: +/- 100ppm/C, crystal-controlled.DISTORTION: <0.50% thd 0.25% typical.LIMITS: Sweeps between programmed upper and lower limits.
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Input Characteristic Analyzer of Electronic Ballast
UI2001
• 4 display windows for V (600V), A (2A), W, PF/Hz • THD, 0 to 39th harmonic components • Accuracy: ± (0.4% reading + 0.1% range + 1 digit) • Data and curves printable. All the data and curves can be displayed after being connected with PC
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LCD Power Meters
Accuracy ±0.1% F.S. Measuring and display ACV/ACA/Watt/Var/VA/Power Factor/Frequency/KWH/DM(Demand) Input measurement network can be selectives(1P2W/1P3W/3P3W/3P4W) CT rate/PT rate can be modified(1 to 9999) Measuring ACV/ACA total harmonic distortion(THD),up to 35th harmonic(optional) Two alarm control function (optional) Two pulse output function (optional) Digit RS-485 interface function (Optional)
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Meter Software Module
Metra Mess- und Frequenztechnik in Radebeul e.K.
*Level display as five digits number*Display selectable between acceleration, velocity and displacement*RMS, positive, negative and unsigned peak values, instantaneous value *Rotary speed measurement with Photoelectric Reflex Switch (only VM-METER+)*Main frequency (only VM-METER+)*Measurement at rotation speed or multiples (only VM-METER+)*Sound level meter (A and C weighted) and noise dose meter (only VM-METER+)*THD (distortion) measurement (only VM-METER+)*One VM-METER license can be operated simultaneously up to four times with different settings*Offline measurement
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Network Analyzers
MPR6 Series
Dimensions:96X96kVArh, Max, Min: available (available) % THD I: available (available) % THD V: available (available)Harmonics 1-51.:RS-485:available (available)Digital Input:Digital Output:2AO:0/14-20mA: AO:0/2-10V:Relay:2 Pulse Output: available (available) Hour (RTC): available (available) Memory:1MB Pulse Counter: none (none) Operating Hour: none (none) Alarm: available (available) CT-25: none (none) 110/230 VAC:none (none) 85-265 VAC/DC: available (available) 45-265 VAC/DC: none (none) 10-56 VDC: none (none) Pcs. / Carton:8
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Network Analyzers
MPR2 Series
Dimensions:DIN4 kVArh, Max, Min: available (available)% THD I: none (none) % THD V: none (none)Harmonics 1-51.: RS-485: none (none)Digital Input:Digital Output:Temperature Input:AOV:RLY: Memory:Current Voltage Unbalances: none (none) X5/X1: none (none)Plug & Meter: available (available) 85-300 VAC/DC: available (available)
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Portable Three-Phase Current Load
EE-120A-3
The Current Source is able to generate three-phase currents, synchronized with the service voltage, with unprecedented stability and measurement accuracy. The amplitude and phase-shift of each current is individually adjustable. The values of voltage, current, power, power factor, phase shift, THD and frequency are indicated on the LCD display.
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Portable Three-Phase Phantom Load
EE-120A-3 + EE-500V-3
The Phantom Load is able to generate three-phase voltages and currents with unprecedented stability and measurement accuracy. The amplitude and phase-shift of each current and voltage is individually adjustable. The generated values of voltage, current, power, power factor, phase shift, THD and frequency are indicated on the LCD display.
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Power Quality Analyzer
PQA-300
PQA-300 Power Quality Analyzer offers the latest functionality and measurement technology designed specifically for the Utility industry. The PQA-300 is a compact solution to address; Flicker PST and PLT, Voltage and Current imbalance, Sags, Dips and Swells, harmonics, inter harmonics, THD, RMS Voltage and Current, Phase and Time measurement.
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RF Transformers
Pulse continues to lead the way with a broad range of components that enable twisted-pair copper high-speed services to homes and businesses. Pulse components are also used in cable modems and the consumer electronics that provide home networking services. Our high-performance transformers support home phone line and power line networks. These transformers are designed to exceed ANSI and ETSI standards, and have excellent THD performance and small footprints.
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Telecom Transformers
Our high-performance telecom transformers support multiple home phone line and power line network applications. These transformers have excellent THD performance, small footprints, and are designed to exceed industry standards. Single, dual, quad, six, octal and twelve transformer numbers are available.
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THD Improvement Kit
IG-18 Series
Many voices, one kit. Lots of articles have suggested improvents to the Heathkit IG-18. But until now, no one offered a complete kit to make these modifications easy for the DIY'er. We have incorporated the best of those published ideas and now offer a complete kit to help you upgrade your Heathkit IG-18.
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Three-Phase Power Analyzer
2553
The 2503AH Analyzers measure power, voltage, and current up to 500 kHz with premier precision. Available parameters include V, A, W, Power Factor, Crest Factor, K Factor, THD, Harmonics, Phase, VA, VAR, W.Hr, Triplens, Impedance, Inrush, Mean-Peak Values, Efficiency- Loss, etc.
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Through Hole/ Donut Load Cell (3.00 O.D.) Compression Only
THD SERIES
Our THD Series through hole donut load cells offer an outside diameter of 3.00 inches and up to nine different through hole diameter options per capacity range. These load cells are manufactured from heat treated 17-4 ph stainless steel. The sensing element incorporates bonded foil strain gages of the highest quality and are sealed for protection against most industrial Environments.
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Ultra-Low Distortion Function Generator
DS360
Stanford Research Systems, Inc.
The performance of a low distortion analog source and the precision of direct digital synthesis (DDS) is combined in the DS360. With less than 0.001 % total harmonic distortion (THD), 25 ppm frequency accuracy, and a broad range of features including sweeps and bursts, the DS360 is the ideal source for audio frequency applications.
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AC / DC Digital Power Analyzer
4016（800Vp,20Arms/200Ap）
To analyze AC/DC power source, it requires a lot of parameters. Such as voltage(V), current(A), power factor(PF), Total Harmonic Distortion(THD), Crest Factor(CF), Inrush current, etc. To meet power saving regulation, the standby power measurement must be done. In this video I will show you how to operate this Prodigit Power Analyzer 4016. Furthermore, I explain what the parameter's meaning.
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Power Factor RLC Load
3282（280V,1875W / 3700VA ）
3282 power Factor RLC Load built-in 16-bit A/D and DSP precision measurement circuit, provides accurate measurements, measurement items have Vrms, Arms, Watt, VA, CF, PF, THD, VTHD, ITHD, Ipeak, Amax, Amin, Vmax, and Vmin. In addition to these measurement functions, it also provides time measurement，products such as UPS, fuses and circuit breakers etc. trip or blow time and transfer time for Off-line UPS
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Type 1 Phantom Powered Measurement Microphone
MK224PH
The MK224PH Type 1 phantom powered measurement microphone system offers a cost effective solution to acoustic measurements from phantom powered sources. Frequency Response: +/-2dB (8 Hz to 18kHz). Sensitivity: 50 mV/Pa (-26 dBV/Pa)typ. Dynamic Range 3% THD: 14dBA-145dB.
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Clean Power Source
AC1000A
The AC1000 achieves its unique price/performance ratio by actively adjusting the incoming mains waveform to produce a clean output. Other suppliers use convertor techniques to completely recreate the output from scratch. Our solution delivers an output which achieves the required THD with the minimum of hardware and expense. It includes the ability to switch the correction in or out so that the original waveform can be observed and measured if required. Overload and thermal protection systems are built-in and produce an audible warning if activated.
