Digital multimeter
Fluke 28 II Ex Intrinsically Safe True-rms Digital Multimeter
Now there is one intrinsically safe digital multimeter (DMM) you can use in IIC (gas), in Zones 1 and 2, and IIIC (dust), Zones 21 and 22. Whether you work in an oil, chemical, or pharmaceutical environment , all the test and troubleshooting capabilities you need are in the most robust and intrinsically secure (IS) Fluke DMM ever made. The Fluke 28 II Ex is also water, dust and drop resistant. You will be equipped to solve all problems, inside and outside the danger zone, without compromising on compliance or measurement performance.