PF66E type digital multimeterDetailed product description：

The PF66E digital multimeter is a 4-digit desktop multimeter composed of a low drift amplifier and a CMOS integrated circuit. It has basic measurement functions such as DCV, ACV, DCA, ACA, and OHM. It can measure voltage up to 1000V DC or AC peak, with a resolution of up to 10 μ V, current up to 20A, automatic polarity conversion, and intuitive reading display.
The PF66E digital multimeter adopts high-precision true effective value for AC measurement, with a wide measurement frequency band and the ability to accurately measure the effective value of any waveform of AC quantity.

U Technical Data
General characteristics
(1) Manual range selection;
(2) 4 1/2 inch large screen LCD display (display range 75 × 40mm), with a maximum reading of 19999;
(3) Voltage measurement reaches 1000V (DC) and 750V (AC);
(4) AC/DC current measurement 20A;
(5) AC voltage frequency response 50kHz;
(6) Frequency, resistance, diode, and on-off testing functions;
(7) Operating environment: 0~40 ℃, relative humidity less than 75%;
(8) AC power supply: 220V ± 10%;
(9) Overload protection with an effective value of 250V;
(10) Dimensions: 260 × 220 × 105mm;
(11) Weight: Approximately 1kg.

Technical characteristics
Preheating time: 30 minutes; Ensure accuracy with an ambient temperature of 23 ± 5 ℃ and a relative humidity of<75%. The calibration warranty period is one year from the date of manufacture.

Direct Current Voltage (DCV)

range	accuracy	resolution
200mV	± (0.05% reading+3)	10μV
2V		100μV
20V		1mV
200V		10mV
1000V	± (0.1% reading+5)	100mV

Input impedance: All ranges are 10M Ω;
Overload protection: The 200mV range is 250V DC or AC peak, and the rest is 1000V DC or AC peak.

AC Voltage (ACV)

range	input frequency	accuracy	resolution
200mV	50Hz—50kHz	± (0.8% reading+80)	10μV
2V	50Hz—20kHz		100μV
20V			1mV
200V	50Hz—5kHz		10mV
750V	50Hz—400Hz	± (1.0% reading+50)	100mV

The input value that ensures accuracy should be greater than 10% of the range;
Input impedance: All ranges are 2M Ω;
Overload protection: The 200mV range is 250V DC or AC peak, and the rest is 1000V DC or AC peak.

Direct Current (DCA)

range	accuracy	resolution
20mA	± (0.35% reading+10)	1μA
200mA		10μA
2A	± (0.8% reading+10)	100μA
20A		1mA

Maximum input voltage drop: 200mV;
Maximum input current: 20A (not exceeding 15 seconds);
Overload protection: 2A/250V fuse, 20A/250V fast melting fuse.

Alternating Current (ACA)

range	input frequency	accuracy	resolution
200mA	50Hz—5kHz	± (0.8% reading+80)	10μA
2A	50Hz—400Hz	± (1.0% reading+50)	100μA
20A*			1mA

Maximum input voltage drop: 200mV;
Maximum input current: 20A (not exceeding 15 seconds);
Overload protection: 2A/250V fuse, 20A/250V fuse.

Resistance (Ω)

range	accuracy	resolution
200Ω	± (0.1% reading+20)	0.01Ω
2kΩ	± (0.1% reading+5)	0.1Ω
20kΩ		1Ω
200kΩ		10Ω
2MΩ		100Ω
20MΩ	± (0.4% reading+5)	1kΩ

Open circuit voltage: less than 3V;
Overload protection: 250V DC and AC peak values;

Capacitor (CAP)

range	accuracy	resolution
20nF	± (3.5% reading+20)	1pF
2µF		100pF
200µF	± (5% reading+30)	10nF

Test frequency: approximately 400Hz;
Overload protection: 36V DC or AC peak.

Frequency (FREQ.)

range	accuracy	resolution
20kHz	± (1.0% reading+20)	0.1Hz
200kHz		1Hz

Input sensitivity: 500mV effective value;
Overload protection: 250V DC and AC peak (not exceeding 15 seconds).

Transistor hFE parameter testing

range	display value	test conditions
HFE NPN or PNP	0~1000.0	Base current is about 10 µ A, Vce is about 3V

Diode and on-off test
Overload protection: 250V DC and AC peak.

range	explanation	test conditions
	The measured value is an approximate forward voltage drop. When the measured resistance is below 70 Ω± 20 Ω, the buzzer sounds and displays the approximate value. The open circuit voltage is about 3V	The forward DC current is about 1mA, and the reverse DC voltage is not greater than 3V