ET1240 4½ Benchtop Digital Multimeter Profile

ET1240 is a 4½ digits, 22000 counts, dual digital benchtop true-RMS multimeter.The STM32 chip and external double integral AD used by this benchtop multimeter providing accurate measurement and stable performance. 3.5 inch 320 * 480 high resolution TFT LCD screen makes a clear reading, rich display, and a good visual effects. The benchtop multimeter is powered by electricity and provide full-function, full-range overload protection. Fresh and simple design with excellent performance makes them an ideal choice for electricians, electronics enthusiasts, engineers and colleges and universities.

1. Main features

l 4½ digits, 22000 counts.

l Dual parameter display: display two parameters of the same input signal.

l Measurement rate: FAST (7 times / sec), MID (5 times / sec), SLOW (2 times / sec).

l Trigger mode: Automatic trigger, single trigger, external trigger(optional).

l Range switching mode: Auto / Manual.

l 12 basic measurement functions: AC and DC voltage, AC and DC current, two-wire / four-wire resistance, period / frequency, diode, on-off test, capacitance, duty cycle.

l DCV basic accuracy: 0.05%.

l Mathematical functions: MX+B/MAX/MIN/dB/dBm/Rel/Comp Hi/Comp Low/ Statistics.

l Additional functions: Data hold, data record, data readback.

l keys can be locked.

l Open calibration function.

l Square wave output.(Optional.)

l Provide system settings, can configure the language(Chinese / English), buzzer, screen brightness, interface display style.

l Temperature: Thermocouple: K/N/R/S/T/B/E/J/WRe325/WRe526; RTD: PT100 / PT50 / Cu100 / Cu50.

l Communication Interface: Standard: USB Device; Optional: RS232, USB Host, GPIB, LAN, WIFI, Bluetooth.

l Support SCPI protocol.

 

 

2. General technical specifications

Power supply voltage: 220V AC±10%, 110V AC ±10%, 45-65Hz.

Working environment: 0~40℃, relative humidity < 80%.

Storage environment: -10~50℃, relative humidity < 80%.

Dsiplay: 3.5-inch, 320 * 480 resolution, 16 M colour TFT LCD.

Dimensions: 265 mm * 105 mm * 305 mm.(width * height * depth).

Weight: 2.3kg.

3. Technical indicators

Mode	ET1240
Display digits	22000(4½)
Maximum measurement speed	7 times / sec
Function	DC voltage	DC current	AC voltage	AC current
Accuracy	±(0.05%+3)	±(0.35%+10)	±(0.8%+80)	±(0.8%+80)
Range	10uV~1000V	10nA~10A	10uV~750V	10nA~10A
Highest resolution	10uV	10nA	10uV	10nA
	--		40Hz~100kHz	40Hz~10kHz
Function	Resistance	Capacitance	Frequence	Period
Accuracy	±(0.1%+6)	±(3.5%+30)	±(0.2%+10)	±(0.2%+10)
Range	10mΩ~200MΩ	1pF~10mF	1Hz~20MHz	50ns~500ms
Highest resolution	10mΩ	1pF	0.001Hz	0.01ns
Others
Mathematical functions	MX+B/MAX/MIN/dB/dBm/Rel/Comp Hi/Comp Low/Hold/Statistics
Resistance measurement	Support 2-wire, 4-wire in two ways.
Continuity test	When the resistance is less than 30 ohms, the buzzer sounds.
Diode test	Measurable range: 0～2V
AC+DC measurement	Support.
Trigger mode	Standard: automatic trigger, single trigger; Optional: external trigger.
Duty cycle measurement	5.0%～95.0%. (the error is within 10 words.)
Square wave output	Frequence: 1Hz～100kHz, amplitude: 3V.(Optional.)
Limit test	Support.
Calibration	Support.
Temperature	Thermocouple: K/N/R/S/T/B/E/J/WRe325/WRe526; RTD: PT100/PT50/Cu100/ Cu50.
Communication Interface	Standard: USB Device; Optional: USB Host, RS232, GPIB, LAN, WIFI, Bluetooth.
Additional functions	Data hold, data record, data readback.

4. Parts List

Standard accessories:

• A pair of 30A52 type proes
• A 30A51 type three-core power cord.
• Two 32A52 type backup power supply fuses.
• One user manual.

Optional accessories:

• 32P04 type RS232 serial cable.
• 32P05 type USB cable。
• 32P01 type GPIB cable。
• 32P02 type Cabinet installation kit.