Overview

Features

  • Measures:
    • AC/DC voltage to 600 V
    • AC/DC current to 10 A
    • Resistance, capacitance, frequency, duty cycle
  • Large, backlight LCD display
  • Diode test & Audible continuity test
  • Data hold
  • MAX, MIN and Relative measurements
  • Auto and Manual ranging
  • Auto power-off
  • Temperature measurement: -58°F to 1382°F (AM-240 only)
  • CAT III 600 V safety rating

Description

The Amprobe AM-220 and AM-240 are economical, full-featured digital multimeters ideal for a wide range of applications. Featuring all basic multimeter functions, the AM-220 and AM-240, have a safety rating of CAT III 600V.

The Amprobe AM-220 and AM-240 each measure AC/DC voltage up to 600 V; AC/DC current up to 10 A; resistance up to 40 MΩ; capacitance up to 4000 µF and frequency up to 10 M Hz. The Amprobe AM-240 digital multimeter also measures temperature from -58°F to 1382°F (-50°C to 750°C). Test measurements are displayed on a large, backlit LCD display. Other features of the Amprobe AM-220 and AM-240 digital multimeters include diode test; audible continuity test; data hold; MAX, MIN and Relative measurements; auto and manual ranging and auto power-off (can be disabled).

The Amprobe AM-220 and AM-240 ship complete with:

  • Test leads (MTL-90B)
  • Fuses (250 V, 0.5 A & 250 V, 10 A)
  • Thermocouple probe (TPK-59); Amprobe AM-240 only
  • Manual

Amprobe AM-220 and AM-240 Digital Multimeter Specifications

DC Voltage
Range Accuracy Resolution
400 mV ±(0.5% rdg + 2 dgts) 0.1 mV
4 V ±(0.5% rdg + 2 dgts) 1 mV
40 V ±(0.5% rdg + 2 dgts) 10 mV
400 V ±(0.5% rdg + 2 dgts) 100 mV
600 V ±(0.8% rdg + 3 dgts) 1 V
Overload protection: 600 V DC or AC RMS
Impedance: 10 MΩ, more than 100 MΩ on 400 mV range
AC Voltage
Range Accuracy Resolution
400 mV ±(1.5% rdg + 3 dgts) 0.1 mV
4 V ±(1.0% rdg + 2 dgts) 1 mV
40 V ±(1.0% rdg + 2 dgts) 10 mV
400 V ±(1.0% rdg + 2 dgts) 100 mV
600 V ±(1.5% rdg + 3 dgts) 1 V
Average sensing, calibrated to RMS of sine wave
Frequency: 40 to 400 Hz
Overload protection: 600 V DC or AC RMS
Impedance: 10 MΩ, more than 100 MΩ on 400 mV range
DC Current
Range Accuracy Resolution
400 µA ±(1.2% rdg + 3 dgts) 0.1 µA
4000 µA ±(1.2% rdg + 3 dgts) 1 µA
40 mA ±(1.2% rdg + 3 dgts) 10 µA
400 mA ±(1.2% rdg + 2 dgts) 100 µA
4 A 1 mA 1 mA
10 A 1 mA 10 mA
Overload protection: 0.5 A/250 V, 10 A/250 V fuse
Impedance: 10 MΩ, more than 100 MΩ on 400 mV range
AC Current
Range Accuracy Resolution
400 µA ±(1.5% rdg + 3 dgts) 0.1 µA
4000 µA ±(1.5% rdg + 3 dgts) 1 µA
40 mA ±(1.5% rdg + 3 dgts) 10 µA
400 mA ±(1.5% rdg + 3 dgts) 100 µA
4 A ±(2.5% rdg + 5 dgts) 1 mA
10 A ±(2.5% rdg + 5 dgts) 10 mA
Average sensing, calibrated to RMS of sine wave
Frequency: 40 to 400 Hz
Overload protection: 0.5 A/250 V, 10 A/250 V fuse
Resistance
Range Accuracy Resolution
400 Ω ±(1.0% rdg + 2 dgts) 0.1 Ω
4 kΩ ±(1.0% rdg + 2 dgts) 1 Ω
40 kΩ ±(1.0% rdg + 2 dgts) 10 Ω
400 kΩ ±(1.0% rdg + 2 dgts) 100 Ω
4 MΩ ±(1.0% rdg + 2 dgts) 1 kΩ
40 MΩ ±(2.0% rdg + 3 dgts) 10 kΩ
Overload protection:250 V DC or AC RMS
Capacitance
Range Accuracy Resolution
40 nF ±(3.0% rdg + 10) 10 pF
400 nF ±(2.5% rdg + 5) 100 pF
4 µF ±(2.5% rdg + 5) 1 nF
40 µF ±(2.5% rdg + 5) 10 nF
400 µF ±(5.0% rdg + 10) 100 nF
4000 µF ±(20.0% rdg + 20) 10 µF
Overload protection:250 V DC or AC RMS
Diode and Audible Continuity Test
Range Description Test Condition
Diode & Audible continuity test Display read approximately forward voltage of diode Forward DC current approx. 0.4 mA reversed DC voltage approx. 2.8 V
Diode & Audible continuity test Built-in buzzer sounds if resistance is less than 50 Ω Open circuit voltage approx. 0.5 V
Overload protection: 250 V DC or AC RMS
Frequency
Range Accuracy Resolution
10 Hz ±(0.1% rdg + 5 dgts) 0.01 Hz
100 Hz ±(0.1% rdg + 5 dgts) 0.1 Hz
1000 Hz ±(0.1% rdg + 5 dgts) 1 Hz
10 kHz ±(0.1% rdg + 5 dgts) 100 Hz
100 kHz ±(0.1% rdg + 5 dgts) 10 Hz
1000 kHz ±(0.1% rdg + 5 dgts) 1 kHz
1 MHz ±(0.1% rdg + 5 dgts) 10 kHz
Sensitivity: sine wave 0.6 V RMS (10 MHz: 1.5 V RMS)
Overload protection: 250 V DC or AC RMS