31 Hand Held Single and Three Phase Power Analyzer.
MODEL 31 Hand Held Battery Operated Single and Three Phase Power Analyzers are valuable engineering
tools designed to offer precision measurement on all types of signals including electronic drives.
The Model 31 hand-held Power Analyzer are sophisticated measuring instruments, single phase and three
phase, designed for laboratory and field use.
Unlike other instruments in this price range the Model 31 Power Analyzers are suitable for measurements on
frequency inverter drives, light ballasts, and other electronically controlled loads. The wide frequency range,
the high common mode rejection, and the fact that you can measure currents of up to 50A directly without
having to use clamps guarantees excellent accuracy for all types of measurements.
Power Analyzer
| Model | Description | List Price | Sale Price |
| 31-1/0.2 | Single Phase Power Analyzer, 0.2% accuracy. | Call | Call |
| 31-3/0.2 | Three Phase Power Analyzer, 0.2% accuracy. | Call | Call |
| 31-3/0.2M | Three Phase Power Analyzer, 0.1% accuracy. | Call | Call |
The Model 31 Power Analyzer are controlled by six menu soft keys M1 through M6, five cursor soft keys,
and one power-on/off soft key. The operating procedure, to configure the display, to configure the interface,
to set scaling factors, and to select the input, the ranges, and many more functions are self-explanatory.
If you desire you can store your personal instrument configuration in nonvolatile memory and have the unit
start-up with your personal configuration at power-on. Efficient data processing makes simultaneous
measurements in a three phase system possible. Three True RMS line voltages, True RMS line-to-line
voltages, True RMS currents, power, power factor, minimum, maximum, harmonics of 3 currents and 3
voltages, and all derived quantities are determined from the same measurement interval (minimum 250ms).
You have the choice to display phase values including wave forms or bar graphs, or you can display total
and average values in the 3 phase system.
You can also display the values of all three phases including their sums, and averages.
The Model 31 Power Analyzer includes a data logging mode to transfer data from a dynamic process to a
personal computer for further analysis.
Also, current harmonics according to IEC1000-3-2 in a 3 phase system are determined.
By means of the operating software simple pass-fail criteria are generated.
Model 31 Power Analyzer specification
| 31 Power Analyzer | ||
| Voltage | 7 ranges: 1V, 3V, 10V, 30V, 100V, 300V, 1000V | |
| Frequency range | DC, 0.1Hz-1MHz | |
| Crest Factor | 3:1 at 50% full scale (fs) | |
| Input Impedance | less than 1MΩ | |
| Common Mode - 50Hz/100kHz | 160dB/100dB | |
| Standard accuracy 23°C; rms, mean, rectified mean; 0.3V typical 1Hz-1kHz = ±(0.1% rdg + 0.07% range) 1kHz-10kHz = ±(0.3% range + 0.2% range) 10kHz-100kHz = ±(0.05% range + 0.3% range) |
Accuracy Grades: k=1, k=2, k=4 |
|
| Current | 10 ranges: 100mA,300mA,1A,3A,10A; 1,3,10,30,100A | Clamp: 1A - 1000A |
| Frequency range | DC, 0.1Hz-100kHz | |
| Crest Factor | 3:1 at 50% full scale (fs) | |
| Common Mode - 50Hz/100kHz | 160dB/120dB | |
| Accuracy 23°C ±3°C;rdg= reading, rng= range 3A input 1Hz-500Hz ±k(0.1% rdg + 0.1% rng) 500Hz-2kHz ±k(0.8% rdg + 0.8% rng) 2kHz-10kHz ±k(2% rdg + 1% rng) 10kHz-100kHz ±k(0.1%/kHz rdg + 2% rng) |
Accuracy Grades: k=1, k=2, k=4 |
|
| Power | 70 Ranges corresponding to the products of voltage ranges time
current ranges. |
|
| Frequency range | DC-100kHz | |
| Accuracy 23°C ±3°C 1Hz-1kHz Add accuracy percentage of current and voltage 1kHz-100kHz Add accuracy percentage figures of current and voltage input, add ±2% (1-PF)/kHz of range |
PF = 0 to ±1 |
|
| Frequency | 2Hz-100kHz; A; V: ±0.1% | |
| Computed Values |
Reactive Power, Var = ±(VA² - W²)½; Apparent Power: VA = Arms Vrms; Power Factor: PF = W/VA; Crest Factor: CF = Ap/Arms, Vp/Vrms; Maximum = Ap, Vp; Minimum: -Ap, -Vp; PtP: Maximum - Minimum; Impedance: Z = Vrms/Arms; Total Harm Dist: THD1 = (Irms² - IFund²)½/Irms THD2 = (I2_rms² + I3_rms² + In_rms²)½/Irms |
Add accuracy percentage figures of values involved in computation. |
| Integrator | Energy, Accuracy: Wh, VAh; Basic accuracy of integrated quantity. | |
| Harmonic Analysis |
Frequency range of fundamental - 4Hz-50kHz | |
| Range of harmonic | 1-63 | |
| Computed values: harmonic power, harmonic phase angle (power factor) harmonic impedance. |
Add accuracy percentage figures of values involved in computation. |
|
| Options | RS232 interface Windows operating software 95,98,NT,ME,2000,XP Current clamps 0-200A / 0-400A |
|
