NDN Calibration Laboratory with accreditation!

In July 2022, our Calibration Laboratory received accreditation with the number AP 209 granted by the Polish Center for Accreditation (PCA) under the EA MLA international agreement. Thus, the Laboratory confirmed compliance with the requirements of PN-EN ISO/IEC 17025 "General requirements for the competence of testing and calibration laboratories" in the field of calibration of electrical quantities.



Miernik Cęgowy APPA 138F



811,80 złbrutto

594,00 zł netto
730,62 zł brutto (23% VAT)

The lowest price of this product in the last 30 days before the discount was 811,80 zł gross

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Product Overview

APPA 138F is a multifunction clamp meter that supports the SFLEX-T probe, which makes the AC current measurement range up to 3000A. The device has a 4-digit backlit LCD display with a maximum indication of 10000. The basic accuracy of the meter is 1.5%.

Measurement functions and ranges

  • Direct and alternating current in the range up to 1000A (with SFLEX-T DO 3000ACA probe);
  • DC voltage in the range up to 1000V;
  • AC voltage in the range up to 1000V;
  • Power in the range of 10kW to 1MW;
  • Power Factor measurement from -1.00 to 1.00;
  • THD harmonic content factor measurement from 0% to 100%;
  • Current and voltage harmonic measurement (up to 25th harmonic) from 0% to 100%;
  • Phase sequence test;
  • Switching current measurement;
  • Frequency measurement up to 10kHz;
  • Capacitance measurement in the range up to 4000µF;
  • Resistance in the range up to 100kΩ;
  • Acoustic continuity test <30Ω;
  • Diode test.

Key features

  • Display: LCD, 4-digit;
  • Maximum display 10000;
  • Bargraph (60 segments)
  • Sampling rate of 3 times/s;
  • Maximum resolution 0.01V / 0.01A / 0.01Ω / 0.1μF / 0.1Hz/ 1W;
  • Maximum diameter of the measured wire 42mm;
  • Readout memory (SMART DATA HOLD function);
  • Peak value memory (PEAK HOLD function);
  • Minimum and maximum value memory (MIN./MAX. function);
  • Low-pass filter (LPF);
  • VoltSense™ - non-contact detection of live cables and sockets;
  • Measurement of the rms value of an arbitrarily shaped signal (TrueRMS) from 50 Hz to 500 Hz;
  • Automatic illumination of measuring clamps;
  • Navigating through the menu using the cursor joystick;
  • Automatic signal type detection (AC, DC and AC+DC) on current and voltage ranges;
  • Automatic function selection for diode and continuity tests and resistance measurement;
  • Battery discharge indicator;
  • Automatic reset button for DC measurement (HOLD button held down for 2 seconds);
  • Automatic power off after about 15 minutes;
  • Safe fully insulated test leads;
  • Resistant to a fall from a height of up to 1.3m;
  • Safety (Cat. III 1000V / Cat. IV 600V);
  • Warranty: 24 months.


  • Measuring wires;
  • Battery;
  • Case;
  • User manual.

Function presentation


Automatic detection of AC, DC and AC+DC current functions

and voltage with AC+DC True RMS and automatic selection of resistance, continuity and diode.


APPA's 130F series clamp meters feature an active backlit display,

which turns on when the button is pressed or the dial is turned,

and also automatically turns off to save battery power.


Flashlight illumination during cable crimping and automatic

non-contact voltage detection for better identification of the working environment.


The APPA 130F series is integrated with the flexible SFLEX-T current probe,

which extends the current range to 3,000 ACA, providing greater flexibility,

making electrical measurements easier and safer.


Each APPA 130F series clamp meter provides advanced power measurement functions,

phase rotation, total harmonic distortion and even harmonics 1 to 25.

All this with an easy-to-use interface, enabling fully professional application

in power measurement with excellent performance.


An innovatively designed navigation key has optimized

function selection and operation of functions with a finger or thumb.

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