... . voltage supply24VDC ±10%4,Output signal4~20mA or 1~5VDC5,load resistance0~500Ω6,Interfaceinput type7,material :1Cr18Ni9Ti8,ambient temperature-20 ... , rubber, Building Material, electric, metallurgy, Medicine ,food etc.4. Structure:5. Certification of conformity of an instrument for explosive atmosphere