EmbeddedRelated.com
EX330

EX330

Extech
Digital Multimeters Multimeter W/NCV, 4000 Ct Autoranging/Temp
11 in stock

Overview

The EX330 is a compact, 4000-count autoranging digital multimeter featuring a built-in non-contact AC voltage detector. It provides comprehensive measurement capabilities including frequency, duty cycle, and capacitance, alongside a Type K thermocouple input for temperature monitoring. This handheld tool is designed for electrical troubleshooting and general electronics testing with a basic DC voltage accuracy of 0.5 percent.

Why Choose This Part

The EX330 offers a high-resolution 4000-count display and 0.5 percent DC accuracy in a compact 147mm form factor. It integrates specialized functions like duty cycle and frequency measurement that are often omitted in entry-level handheld units, providing significant value for mixed-signal debugging.

Applications

AC Mains Troubleshooting
Utilize the built-in non-contact voltage (NCV) detector to identify live circuits from 100 to 600VAC before making contact.
Embedded System Characterization
Measure low-level currents down to 0.1 microamps and check timing components with the 10MHz frequency counter.
Thermal Management Testing
Monitor heatsink or component temperatures using the switchable Fahrenheit and Celsius Type K thermocouple input.
Power Supply Verification
Check voltage rails up to 600V and verify smoothing capacitor health using the 200 microfarad capacitance range.

Key Specifications

Type Digital (DMM)
Style Handheld
Ranging Auto
Features Auto Off, Hold
Function Voltage, Current, Resistance, Capacitance, Temperature, Frequency
Response Average
Display Type LCD
Display Count 4000
Display Digits 3.75
Functions, Extra Continuity, Diode Test

Getting Started

To begin, install a 9V battery and select the desired function via the rotary dial; for temperature readings, ensure the Type K probe is inserted into the dedicated COM and Temp jacks. Use the Data Hold feature to freeze readings in tight spaces and the Relative function to null out lead resistance during low-ohm measurements.