Wattmeters
Wattmeters measure the active, reactive and apparent power of AC or DC electrical circuits. Their measurement range generally covers a few milliwatts to several kilowatts, with an accuracy of up to ± (0.1 % + 2 digits). In R&D, they are used to characterise power supplies, inverters, motors, converters or power electronic devices. In production, they are used to check efficiency and energy compliance in accordance with IEC 61010 and EN 62053. Modern models feature harmonic analysis, power factor (cos φ) calculation and simultaneous measurement on several three-phase channels. Some laboratory power meters achieve a resolution of 0.01 mW and a bandwidth in excess of 100 kHz for PWM signals. LAN, USB and GPIB interfaces enable them to be integrated into automated test benches and traceability of ISO 17025 tests. Portable wattmeters make it easy to measure power consumption and maintain equipment on site.
An essential tool for quantifying power and optimising the energy efficiency of electrical systems.
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CA8335-4XAMP450-4XMN93ADW
CHAUVIN ARNOUX
Wattmeter-Power-Transients SINGLE/TRI:4U/4IQualistar+, 1000V AC+DC.
CA8336-4XAMPFLEXA193-450
CHAUVIN ARNOUX
Single/three-phase power meter with USB and advanced measurement capabilities.
WT210
YOKOGAWA
Single-phase power analyser, DC and AC 0.5 Hz to 100 kHz, accuracy 0.1%.
8485D
KEYSIGHT / AGILENT / HP
Sensitive measurement probe from 100pW to 10µW for frequencies from 50MHz to 26.5GHz.
CA8336
CHAUVIN ARNOUX
Three-phase power and energy analyser, ideal for electrical maintenance.
CA8336-4X-MA193-250
CHAUVIN ARNOUX
Wattmeter-Power MONO/TRI: 5U/4I TRMST+Inrush -1000V(AC+DC) -10KA(AC+DC) - USB.
N1913A
KEYSIGHT / AGILENT / HP
Agilent N1913A RF power meter, measures power from 9 kHz to 110 GHz.
CA8336-4XMN93A4XAMPFLEXA193-450
CHAUVIN ARNOUX
Portable network quality analyser for electrical installations.
84813A
KEYSIGHT / AGILENT / HP
Power probe for HP 8990A/8991A with bandwidth from 500MHz to 26.5GHz.
W8486A
KEYSIGHT / AGILENT / HP
Sensitive 100mW probe with bandwidth from 75GHz to 110GHz.
435B
KEYSIGHT / AGILENT / HP
High-performance digital wattmeter for accurate measurements.
8991A/001
KEYSIGHT / AGILENT / HP
4-channel peak power analyser with bandwidth from 50 MHz to 40 GHz.
E4416A
KEYSIGHT / AGILENT / HP
1-channel benchtop RF power meter up to 110 GHz, ideal for power measurement.
R8486A
KEYSIGHT / AGILENT / HP
Waveguide power sensor, 1 µW to 100 mW, 26.5 to 40 GHz.
432A-478A
KEYSIGHT / AGILENT / HP
7-calibre analogue milliwattmeter for precise measurements.
8487D
KEYSIGHT / AGILENT / HP
50 MHz to 50 GHz diode power probe for precise measurements.
E4417A
KEYSIGHT / AGILENT / HP
Benchtop RF power meter measuring up to 110 GHz, ideal for advanced applications.
HA1600
THURLBY THANDAR INSTRUMENTS
Measuring device compliant with EN61000-3-2 and EN61000-3-3 standards.
concrete questions about Wattmeters
01
What exactly does a wattmeter measure?A wattmeter measures the active power (in watts) consumed or delivered by a circuit. Some models also measure apparent and reactive power, power factor (cos φ) and harmonic distortion (THD).
02
What's the difference between a simple wattmeter and a power analyser?The simple wattmeter provides basic active power data. The power analyser offers detailed multi-channel analysis, waveform display, harmonic decomposition and synchronisation with external signals.
03
In what contexts are they used?Tests of power supplies, motors and converters, assessment of equipment efficiency, standby power measurements and characterisation of low-energy appliances.
04
How accurate can you expect to be?Laboratory power meters have a typical accuracy of between ±0.1 % and ±0.2 % depending on the range, with bandwidths of up to several hundred kHz for measurements of transient or switched signals.
05
Can they be used with high currents?Yes, via external shunts or current sensors (such as Hall clamps or current transformers). Care must be taken to ensure compatibility with the impedances and calibration of the measurement channels.
