Endura AZ25 series probeCombustion oxygen monitor 1 Safety2 OI/AZ25P–EN Rev. E1 SafetyInformation in this manual is intended only to assist our customers in the efficient operation of our equipment. Use of this manual forany other purpose is specifically prohibited and its contents are not to be reproduced in full or part without prior approval of theTechnical Publications Department.1.1 Health & Safety1.2 Electrical safety – CEI / IEC 61010-1:2001-2This equipment complies with the requirements of CEI / IEC 61010-1:2001-2 'Safety Requirements for Electrical Equipment forMeasurement, Control and Laboratory Use' and complies with US NEC 500, NIST and OSHA.If the equipment is used in a manner NOT specified by the Company, the protection provided by the equipment may be impaired.1.3 Symbols – CEI / IEC 61010-1:2001-2One or more of the following symbols may appear on the equipment labelling:Health and SafetyTo ensure that our products are safe and without risk to health, the following points must be noted: The relevant sections of these instructions must be read carefully before proceeding. Warning labels on containers and packages must be observed. Installation, operation, maintenance and servicing must only be carried out by suitably trained personnel and in accordancewith the information given. Normal safety precautions must be taken to avoid the possibility of an accident occurring when operating in conditions ofhigh pressure and / or temperature.Safety advice concerning the use of the equipment described in this manual or any relevant Material Safety Data Sheets (whereapplicable) may be obtained from the Company address on the back cover, together with servicing and spares information.Protective earth (ground) terminal.Functional earth (ground) terminal.Direct current supply only.Alternating current supply only.Both direct and alternating current supply.The equipment is protected through double insulation.This symbol, when noted on a product, indicates a potential hazard which could cause serious personal injury and / ordeath.The user should reference this instruction manual for operation and / or safety information.This symbol, when noted on a product enclosure or barrier, indicates that a risk of electrical shock and / or electrocutionexists and indicates that only individuals qualified to work with hazardous voltages should open the enclosure or removethe barrier.This symbol indicates that the marked item can be hot and should not be touched without care.This symbol indicates the presence of devices sensitive to electrostatic discharge and indicates that care must be takento prevent damage to them.This symbol identifies a risk of chemical harm and indicates that only individuals qualified and trained to work withchemicals should handle chemicals or perform maintenance on chemical delivery systems associated with theequipment.