ESCO EA707D-22A. Pocket Digital Tester

Operation method

Δ-Σ method

AC wave detection method

Average value method

Range switching

Auto range

Usage environment conditions

Altitude 2000m or less, environmental pollution level II

Operating temperature and humidity

80% RH or less at 0℃ to 40℃(no condensation)

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
(45Hz to 1kHz (sine wave))

Resistance

400/4K/40K/400K/4M/40MΩ
Open voltage: about DC0.4V to about DC1.2V

The highest accuracy

●DC voltage: ±(0.8%rdg+4dgt)
●AC voltage: ±(2.3%rdg+8dgt)
●Resistance: ±(2.0%rdg+4dgt)

Decomposition

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

Conduct

Buzzer sound at about 35Ω or less Open voltage: about 1.2V

Diode test

The open voltage is almost the battery voltage
(When the battery voltage is 3V, about 2.9V)

Display

Numerical part 4000
Up to 40 segments in the bar graph part

Over display

Display "OL" in the numerical section