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ITEMLIST
Products Infomation
- Products by Category
- Electronic measuring instruments
- Power supplies / Electronic load devices
- Voltage, current, power measuring instruments
- MICROTEST Power Meter 7120
Used for monitoring power consumption, energy management, performance evaluation, and determining the operational efficiency of electrical appliances or equipment.
MICROTEST 7120 power meter provides a frequency bandwidth of 15Hz to 100kHz. It supports up to 0th order harmonic analysis and has a maximum crest factor of 9 (CF9) for current waveforms. It can measure various parameters related to power supplies, including power, voltage, current, power factor, phase, and more. It is suitable for AC/DC and DC/DC power products.
Power Meter
Model:
7120
Maker:
MICROTEST
7120 Application
The measurements are utilized in environmental monitors, energy saving lamps, exchangeable power supplies, transformers, uninterruptible power systems, power tools, 3C electronic products, and home appliances, etc.
Features
- AC / DC Dual amp/watt-hour meter
- Wide range 0.001W-16KW
- Connection software attached
- Standby Power D.P.I. of 0.001W
- With crest factor ratio display
- Up to the 50 levels harmonic wave analysis capability
- 1000 sets of measurement data storage space
- Current crest factor is highest CF9
Application
The purpose of measuring the power factor of a power meter is to assess the efficiency of electrical devices or systems in converting electrical power to useful output. Power factor is a measure of how effectively the electrical power is being utilized by a device or system. It indicates the ratio of real power (the power that performs useful work) to apparent power (the total power supplied to the device).
A power factor of 1 (or 100%) indicates that all the supplied power is being effectively used for useful work, while a lower power factor indicates that a portion of the supplied power is being wasted as reactive power, which doesn’t contribute to useful output. Monitoring the power factor helps in identifying inefficiencies in devices and systems and optimizing their performance for better energy utilization.
Specifications
| Model | 7110 |
| Frequency Range | DC, 15Hz~10KHz |
| Harmonic (option) | ● / – |
| Model | 7120 |
| Frequency Range | DC, 15Hz~100KHz |
| Harmonic (option) | ● / – |
| Parameters | Range |
| Vrms | 0.1V ~ 600V |
| Vdc | 0.1V ~ 600V |
| Irms | 0.1mA ~ 20A |
| Idc | 0.1mA ~ 20A |
| W | 0.01W ~16KW |
| PF | 0.000 ~ ±1.000 |
| Deg | -180°~ +180° |
| THD | 0.01% ~ 99.99% |
| Hz | 15Hz ~100kHz |
| Measurement Range | |
| Current (fixed/Auto) | 0.01A、0.03A、0.1A、0.3A、1A、3A、10A
20A |
| Voltage (fixed/Auto) | 10V、30V、100V、300V、600V |
| Harmonics SPEC | |
| Analysis base | To achieved stable fundamental frequency
analysis by voltage or current (non-inverter) |
| Frequency Range 45Hz | 45Hz – 440Hz |
| FFT Data Length | 1024 |
| FFT Data Format | 32 bits |
| Measurement
Projects
|
1-50 THD, 1-50 level voltage and current
V [n], A [n] 1-50 level voltage and current distortion percentage V [n%], A [n%] 1-50 level watts W [n] 1-50 level watts distortion percentage Watt W [n%] 1-50 level voltage and current angle DEG [n] Vrms, Irms, Watt, PF |
| Model | 7110
7120 |
| Frequency Measurement Mode | To achieved stable base frequency measurement (variation less than 1%) by voltage or current (non-inverter) |
| Frequency Range | Model 7110
DC, 15Hz~10KHz |
| Model 7120
DC, 15Hz~100KHz |
|
| Data Length | Dual 4096×16 RAM for voltage & current |
| ADC Resolution | 16 bits |
| Sampling Rate | AC 50Hz/60Hz basic sampling rate 100
KSPS /120 KSPS |
| Arithmetic Precision | Watt/VRMS/IRMS/MEAN/PF/Deg/Line filter 32bits |
| Frequency Filter | 500Hz cut off, digital chip filter based on
25MHz |
| Signal Filter | 500Hz-3db digital filter based on
Butterworth 50Hz-0.03% reading, 60Hz-0.05% reading |
| Frequency
Acquisition Mode |
Voltage / current 100MHz baseband
digital dynamic meter chip |
| Phase Lead Detection | Subject to the current, analog/digital
hybrid detecting (error less than 5 degrees) |
| RMS/MEAN Mode Voltage & Current Accuracy (23℃ ±5℃ ) | |
| >=15 Hz, f ≦ 45Hz | ±(0.1% of reading + 0.4% of range) |
| >45 Hz, ≦ 66 Hz | ±(0.1% of reading + 0.1 % of range) |
| >66 Hz, ≦ 1 kHz | ±(0.1% of reading + 0.2 % of range) |
| >1 kHz, ≦ 10 kHz | ±(0.07*f % of reading + 0.3% of range) |
| >10 kHz, ≦100 kHz | ±(0.5% of reading + 0.5% of range)
±[{0.04×(f–10)}% of reading] |
| Funit is 1KHz
When the L-FILTER sets as ON: 45Hz~66Hz frequency range allowable error-0.03 %~-0.05 of reading |
|
| When the AC is measured, if the fundamental frequency exceeds 200Hz, the F-Filter is required to be turned off in order to measure the most accurate
value
**When the frequency range is more than 10KHz, the 7120 starts to support |
|
| DC Mode Voltage & Current Accuracy (23℃ ±5℃ ) | |
| 10V~600V | ±0.2% reading ± 0.2% of range |
| 0.01A ~20A | ±{(0.2)% of reading + 0.2 % of range} ±offset |
| To add up the OFFSET errors of various files during measuring the DC
current |
|
| Power (W) Accuracy (23℃ ±5℃ ) | |
| AC power ranges (Auto or Manual)(40 ranges) range up to 16KW
Maximum Power (W) value is determined by the highest range of voltage profile |
|
| DC ±0.2% reading ± 0.5% of range
15 Hz≦f 66 Hz<f≦1 kHz ±(0.2% of reading + 0.2 % of range) 1 kHz<f≦10 kHz ±(0.4% of reading + 0.3 % of range)± [{0.06×(f)}% of reading] 10 kHz<f≦100 kHz ±(0.5 % of reading + 0.5 % of range)±[{0.09×(f–10)}% of reading] |
|
| Incidental Allowable Error Conditions | |
| Signal Filter Error (AC) | Frequency between 45-66Hz: Add 0.3% of
reading. |
| Frequency between45-66Hz: Add 1% of
reading beyond |
|
| Accuracy Effect of the Phase Error of the Power | |
| When the power factor PF is 0, the error range of Watt is Situation 1: for 45Hz < f, Add±1.0% of VA Situation 2: for 45Hz > f or f > 66Hz Add ±{(3.5 + 0.5×f )% of VA} for up to 100kHz as reference data The unit for frequency f is kHz. When the power factor is 0 < PF≦error range When 0 < PF 1 (θ: phase angle of the voltage and current) for 45Hz f 66Hz. Add ±power reading *{tan(θ)*(0.5)}% for f < 45Hz, f > 66Hz. Add ±power reading *{ tanθ*(0.5×f+0.2) }% |
|
| Error within 12 months | Add ±(0.5% of reading) |
| Model | Support Harmonics
7110-10k-HARM 7120-100k-HARM |
| Don’t Support Harmonics
7110-10k 7120-100k |
|
| F71201 TEST BOX | |
| Built-in stroage | 6 Sets |
| Power Supply | Voltage
100 ~ 240Vac |
| Frequency
50/60Hz |
|
| Power consumption | 300VA |
| Environment | Temperature
23℃±5℃ |
| Humidity
20%-80%RH |
|
| Display | Seven-segment display |
| Dimension (W*H*D) | 227x101x300 mm |
| Weight | 1.85 Kg |
| Interface | RS-232 (7110)、RS232 + GPIB (7120) |
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