Hach-Lange SI792 C, SI792x C, SI792x C-FF, SI792x C-PA User Manual - Manual (Page 18)

Installation
16
3.1 Hazardous location installation
Before installation, review the applicable Hazardous Location Control
Drawing or ATEX EC-Type Examination certificate that is included with
the instrument and the provided documentation CD. Follow all
regulations specified for the installation location.
Refer to the documentation CD for manuals provided in other
languages.