The HP150IS is a Wall mounting Intrinsically Safe Relative Humidity transmitter. The HP150IS has been approved by Baseefa (2001) Ltd for use in Zone 20 conditions and is certified to II 1 GD EEx ia IIC T4 -20°C =Ta =+70°C GAS & DUST certificate number Baseefa03ATEX0101X/1. The probe operates as a two wire transmitter and produces a 4 to 20mA output proportional to 0 to 100% Relative Humidity. Interface to the safe area must be via approved barriers. Baseefa (2001) Ltd have also approved the system drawings in the pdf file using MTL7728-ve or MTL7788R+ve barriers. The system certificate number is Baseefa03Y0103.
