ESCO EA707D-23A. Pocket Digital Tester

Operation method

Δ-Σ method

AC wave detection method

Average value method

Range switching

Auto range and manual range

Usage environment conditions

Altitude 2000m or less ・Environmental pollution level II

Operating temperature and humidity

Maximum 80%RH at 5℃ to 31℃ (no condensation)
Linear decrease from 80% RH to 50% RH at 31℃or more at 40℃

Storage temperature and humidity

-10℃ to 50℃, 70% RH or less (no condensation)

Guaranteed range of accuracy

23±5℃, 80% R.H. Below (no condensation)

DC voltage

400m/4/40/400/500V
Input resistance: 10M to 100MΩ

AC voltage

4/40/400/500V
Input resistance: 10M to 11MΩ
(40Hz to 400Hz (sine wave alternating current))

Resistance

400/4k/40k/400k/4M/40MΩ
Open voltage: about DC0.4V

The highest accuracy

●DC voltage: ±(0.7%rdg+3dgt)
●AC voltage: ±(2.3%rdg+10dgt)
●Resistance: ±(2.0%rdg+5dgt)

Decomposition

●DC voltage: 0.1mV
●AC voltage: 0.001V
●Resistance: 0.1Ω

Conduct

Buzzer sound at 10 to 120Ω or less
Open voltage: about 0.4V

Diode test

Open voltage about 1.5V

Display

Numerical part 4000

Over display

Display "OL" in the numerical section (excluding DC/AC500V range)

Polarity indication

Automatic switching, only "-" is displayed when entering negative

Sample rate

Numerical part 3 times/second