The Fluke 28IIEXETL Intrinsically Safe True-RMS Rugged IP 67 Multimeter is a safe digital multimeter you can use in IIC (gas), in Zone 1 and 2 and IIIC (dust), and Zone 21 and 22 environments. Whether you work in petroleum, chemical, or pharmaceutical industries, all of the test and troubleshooting power you need is packed into a rugged, intrinsically safe multimeter. The 28IIEX is also waterproof, dust-proof and drop-proof. You will be equipped to handle any situation, inside and outside of hazardous zones, without compromising compliance or measurement performance..