Microtest 7120 Single-Phase Power Meter
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MICROTEST
Microtest 7120 Single-Phase Power Meter
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
Açıklama
Specifications
Selection
| Model | 7110 | 7120 |
| Frequency Range | DC, 15Hz~10KHz | DC, 15Hz~100KHz |
| Harmonic (option) | ● / - | ● / - |
Measurement Parameters
| Parameters | Range | Parameters | Range |
| Vrms | 0.1V ~ 600V | PF | 0.000 ~ ±1.000 |
| Vdc | 0.1V ~ 600V | Deg | -180°~ +180° |
| Irms | 0.1mA ~ 20A | THD | 0.01% ~ 99.99% |
| Idc | 0.1mA ~ 20A | Hz | 15Hz ~100kHz |
| W | 0.01W ~16KW |
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 |
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SPEC
| Model | 7110 | 7120 |
| Frequency Measurement Mode | To achieved stable base frequency measurement (variation less than 1%) by voltage or current (non-inverter) | |
| Frequency Range | DC, 15Hz~10KHz | DC, 15Hz~100KHz |
| Data Length | Dual 4096x16 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
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| Incidental Allowable Error Conditions | |
| Signal Filter Error (AC) |
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| CF9 Error (DC) | Add range tolerance * 3 |
| 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) |
SYSTEM
| Model | Support Harmonics 7110-10k-HARM | Support Harmonics 7120-100k-HARM |
| Don't Support Harmonics 7110-10k | Don't Support Harmonics 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) | |
