CERTIFIED TO CANADIAN CSA STANDARD C22.2 NO. 157-92 WARNING: SUBSTITUTION OF COMPONENTS MAY IMPAIR INTRINSIC SAFETY. USE ONLY WITH APPROVED BATTERIES. TEMPERATURE CODE T3C. CAUTION: FOR SAFETY REASONS, THIS EQUIPMENT MUST BE OPERATED AND SERVICED BY QUALIFIED PERSONNEL ONLY. READ AND UNDERSTAND MANUAL BEFORE OPERATING AND SERVICING CHANGE BATTERIES IN NON-HAZARDOUS AREA SCOTT INSTRUMENTS EXTON, PA 19341 2 SCOTT INSTRUMENTS MINI-SA PORTABLE GAS DETECTION INSTRUMENT Contents 1.0 INTRODUCTION .....