Single-Phase Power Meter 7120

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

The MICROTEST 7120 Power Meter is a high-precision instrument designed for detailed power analysis across a broad frequency range of 15Hz to 100kHz. It supports 0th order harmonic analysis, allowing for the assessment of power quality and waveform characteristics. With a maximum crest factor of 9 (CF9), it can effectively measure and analyze high-current waveforms, making it suitable for testing both AC/DC and DC/DC power products.

This versatile power meter can measure key electrical parameters such as power, voltage, current, power factor, and phase, providing comprehensive insights into power system performance. It is ideal for applications that require detailed power analysis, including testing power supplies, energy efficiency, and power conversion systems. The MICROTEST 7120 is designed for use in both R&D and production environments, delivering reliable and accurate measurements to ensure optimal performance and compliance with industry standards.

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	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

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 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
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 (WHD)	227x101x300 mm
Weight	1.85 Kg
Interface	RS-232 (7110)、RS232 + GPIB (7120)

Standard Accessories

Power Cord
Test Box (F7120)
TL218 Alligator Clips
TL208 2mm Test Probe
RS-232 Cable

Optional Accessories

GPIB Cable

Single-Phase Power Meter 7120