User Manual Page 17www.keit.co.uk Installation: DOC0535 (10 July 2019, 16:56)Back to Table of Contents4.2.2 Probe purge outlet (B)Allows purge gas to escape the probe.4.2.3 Probe (C)The probe is designed to be installed directly into a reaction vessel or pipe and is made of anon-corroding metal.4.2.4 ATR Element (D)The ATR element at the end of the probe is made of an infrared glass that will be damagedby chemicals with pH >9. Contact support@keit.co.uk for advice before installing thespectrometer in a process.The material of the ATR element is fragile. It is important to keep the element clean becausethis is where the spectrometer interacts with analytes. See page 76 Protecting and cleaningthe dip probe ATR element for more information.CAUTIONDo not expose the ATR element to alkaline (basic) solutionswith pH > 9 as this will cause irreversible damage to the ATRand will invalidate the warranty. Contact Keit for adviceregarding material compatibility.4.2.5 Breather (E)Do not obstruct the breather.4.2.6 Earthing point (F)The spectrometer body has an M6 earth attachment point below the probe. This should beused in addition to earthing through the power supply cable.WARNING Failure to properly earth the spectrometer may cause seriousinjury or death.4.2.7 Probe purge inlet (G)The spectrometer has been fitted with two 4mm outside diameter (OD) purge inlet ports. Oneof these purges the probe. More detail on how to purge the instrument is given on page 25Section 4.6 Purging the unit.4.2.8 Spectrometer body purge inlet (H)The spectrometer has been fitted with two 4mm outside diameter (OD) purge inlet ports. Oneof these purges the body. More detail on how to purge the instrument is given on page 25Section 4.6 Purging the unit.4.2.9 Communication port (I)The connectors are specifically designed to work in hazardous zones and have IP65 rating.More detail on how to connect them to the cables is given on page 23 in section Data