Safety and Certifications Print Article Intrinsic Safety Approvals for Hazardous Locations WARNINGS Safety Instructions for Hazardous Locations Important things to know about operating the FieldLab Pressure Gauge in hazardous locations. Safety Certifications for FieldLabs with Wireless Module installed European Union, United States and Industry Canada Agency Certifications for FieldLab Pressure Gauge with a Wireless Module P/N DGAU-0046 installed.