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‧ Source 4~20 mA loop Current
‧ Simulate 4~20 mA transmitter
‧ Simulate electronic load (Max. 30V, 20mA)
‧ Test LED brightness (0~24mA)
‧ Source 0~70mV and 0~15V
‧ Calibrate temperature with selection of 11 types of thermocouples
‧ Source frequency (0.3 to 20KHz) of many waveforms
‧ Source: mA, V, Hz, sine wave, square wave, triangular wave, truncated sine wave, user programmable waveform and temperature.
‧ Generate arbitrary waveform
‧ Generate single pulse (3μS to 999.99mS)
‧ Map 4~20 mA into engineering units
‧ Measure: Current (mA), Voltage (mV, V), and temperature (°C, °F)
‧ Measure 4~20 mA with 24V loop supply simultaneously
‧ Selectable 250Ω HART resistor to facilitate use with HART communication device
‧ Programmable cold junction compensation for temperature measurement
‧ Auto step and auto ramp for sourcing mA, V, and temperature
‧ Dot matrix LCD with backlight
‧ Rechargeable lithium battery (1600mAh)
‧ Data logging function for source and measurement
‧ Program calibrator through PC USB port
‧ Programmable 0% and 100% value for easy 25% step function
‧ DTMF (Dual Tone Multi-Frequency) can perform professional testing for telephone line and audio product (MP3 or MD)

‧Measurements of 1Φand 3ΦTransformer/VT/CT Turns Ratio.
‧VT/PT ratio 0.8~10000, CT ratio 0.8~2000.
‧Graphical and Literal Illustration of Measurements and Connections with Large Back-lighted Dot Matrix 240 x 128 LCD. Display Test Data with Nameplate Transformer Values for Easy Interpretation.
‧Ten Test Frequencies (50~400Hz).
‧Display Turns Ratio, Deviation, Secondary Output, Excitation Voltage and Current, Phase Angle and Nameplate Transformer/VT/CT Values in one page for easy transformer quality interpretation.
‧Check for Live Test Points, Short Circuit, Open Circuit, and Reverse Polarity before Each Measurement. Message is displayed to Warn Users (But, checking is not performed once measurement starts).
‧Store 4096 Files of Transformer Nameplate Values (VT/PT/CT, 1Φ/3Φ, Test Frequency, Primary and Secondary Voltages or Ratio, RCF) and Measuring Data.
‧9 types of 3Φ Windings Connections pre-installed for easy user selection.
‧Wireless Blue Tooth Communication with PC.
‧Select Filter to Remove Field Noise (Slow, Normal, Fast).
‧Disable or Enable Auto-Power-Off with Programmable Time.
‧Built-in calendar clock.
Records with Date and Time Stamp.
‧Powerful Lithium Battery (3400mAH) with built-in Charging Circuit.
‧User Programmable RCF (Reference Correction Factor, 0.99~1.01) to Correct Accuracy within 1% Error.
‧Friendly File System for Easy On-site Data Retrieval and Nameplate Values Management.
‧PC Application Software included.

MODEL PROVA 19, 21, 23
‧ True RMS value (V and A)
‧ Leakage Current Measurement at 10 μ A Resolution
‧ Harmonic Analysis (V and A) to the 99 th Order
‧ Better Understanding of High Frequency Harmonic Analysis (up to 5/6 KHz)
‧ Non-interrupted Harmonic Analysis
‧ Analysis of Total Harmonic Distortion (THD-F)
‧ Analysis of Crest Factor (C.F.)
‧Fast Peak Function (33 μ s and 39 μ s)
‧ Programmable CT Ratio (1 to 250)

Model 21(50A) and 23(100A)
‧ W, KW, H.P.
‧ VA, KVA, VAR, KVAR
‧ PF, Phase Angle ( Φ )
‧Energy (mWH, WH, KWH)
‧ Analysis of Standby Power Consumption
‧Balanced 3 Φ Power Quality
‧Balanced 3 Φ Sequence

‧Analysis for Single Phase and Balanced 3 phase system
‧True RMS Value (V and I)
‧Active Power (K,KW,MW,GW)
‧Apparent (VA,KVA,MVA) and Reactive Power (VAR,KVAR,MVAR)
‧Power Factor (PF), Phase Angle( Φ )
‧Energy (WH,KWH,KVARH,PFH)
‧Programmable PT(1 to 3000)Ratios
‧Display of Overlapped Voltage and Current Waveform
‧Maximum Demand (MD in W,KW,MW) with programmable Period
‧Harmonic Analysis (V and I) to 50th Order
‧ Display of 25 Harmonics in one screen
‧Optical Isolated RS-232C Interface
‧Smart Datalogging to save Battery
‧Datalogging of 32,64,128 or 256 points/cycles
‧Analysis of Total Harmonic Distortion (%THD-F)
‧Graphic Phasor Diagram
‧Capture 128 Transient Events (Time+Cycles+Faults) with Programmable Threshold(%),also can be reviewed in LCD
‧50000 Records with Programmable Interval (1 to 6000 seconds)
‧Real-time Output of Waveform, Power Parameters and Harmonics at Command
‧Large Dot Matrix LCD Display with Backlight
‧Power for Long-term Monitoring
‧Built -in Calendar Clock for Data Logging

‧PF( 3 Φ 3W , 3 Φ 4W 1Φ 2W )
‧AC+DC 2000A, 600V Power Factor
‧AC+DC 1200KW(1 Φ ) AC+DC 200KW(3Φ )
‧AC/DC Auto Detection
‧Dual Display V+Hz, A+V,KW+PF,KVA+KVAR

‧3 f 4W, 3 f 3W, 3 f Balanced, 1 f 2W, and 1 f 3W Power Measurement.
‧AC+DC true power, and True RMS AC Voltage and Current
‧AC+DC 2000A, AC 600V, DC 800V
‧AC+DC 1200KW(1 f ), AC+DC 2000KW (3 f )
‧Dual Display V+Hz, A+Hz, W+PF, KVA+KVAR, V+A
‧Phase Angle Measurement
‧3 f RST(L1L2L3) Sequence Indication.
‧Memory of 4 records.
‧DCA/DCW Auto Zero when power clamp powering on.
‧AC/DC Auto Detection.
‧Auto range.

‧Accurate DC/AC digital clamp meter for current measurement.
‧1200A AC/DC current measurement
‧Analog Output for datalogger or oscilloscope.
‧One touch zero for DCA adjustment.
‧23mm diameter jaw.
‧Integrated current probe for waveform observation or recording
‧Large 3 3/4 digits LCD
‧Fast bargraph display (30 times/sec.) for transient observation.
‧Max/Min and Data Hold functions.
‧Easy single rotary switch for any function selection.
‧Ideal for works in crowded switch box or cable areas.

‧AC+DC power measurement: 0 ~ 240KW
‧AC current: 0 ~ 400A (True RMS)
‧DC current: 0 ~ 400A
‧AC voltage: 0 ~ 600V (True RMS)
‧DC voltage: 0 ~ 400V
‧Frequency measurement (Auto range): 1 ~ 100K Hz
‧One touch zero for DCA adjustment
‧Large 3 3/4 digits LCD
‧Jaw diameter: 23mm
‧Fast bargraph display (30 times/sec.) for transient observation
‧Max/Min and Data Hold functions
‧Auto power off
‧Easy single rotary switch for any function selection
‧Ideal for works in crowded switch box or cable areas

‧Best resolution 1μΩ. Accuracy 0.05%
‧5A (120 mΩ) max. test current.
‧Manual or Auto Range. (There are 6 ranges of current measurement, and furthermore 3 ranges in each current range.)
‧Measurement of resistive and inductive materials (Two terminal measurement; Four terminal Kelvin measurement)
‧Programmable Hi-Lo alarm with memory of 20 data.
‧Auto-judgments of Hi (readings higher than Hi-Limit), Lo (readings lower than Lo-Limit) and Pass (readings between Hi-Lo Limits). Alarm (beeper) for Hi and Lo.
‧Readings Hold function.
‧Cable length measurement. The length unit can be selected between Meter (M) and Feet (FT).
‧Resistance measurement results excluding cable resistances.
‧Memory of 3,000 measurement data.
‧Large LCD (5-digit) with backlight (users can choose to disable it).
‧Rechargeable batteries and AC adaptor.
‧Low battery (voltage) alarm.
‧Low power consumption.
‧Communicate with PC via RS232C (to USB bridge) cable.
‧Application: various low-resistance (cables) measurement; contact resistance measurement, …etc.