Hach-Lange ORBISPHERE 31xxx Installation and Maintenance - Manual (Page 3)

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Table of Contents
Section 1 General Information ......................................................................................................... 3
1.1 Disclaimer .................................................................................................................................... 3
1.2 Contact information...................................................................................................................... 3
1.3 Safety information ........................................................................................................................ 3
1.3.1 Use of hazard information ................................................................................................... 3
1.3.2 Service and repairs ............................................................................................................. 3
1.3.3 Precautionary labels............................................................................................................ 4
1.4 Product recycling information....................................................................................................... 5
1.5 Product disposal .......................................................................................................................... 7
1.6 Restriction of hazardous substances (RoHS) .............................................................................. 8
Section 2 Technical Specifications ................................................................................................. 9
2.1 Sensor design .............................................................................................................................. 9
2.2 Sensor weight and dimensions .................................................................................................... 9
2.3 EC sensors and parts used on ORBISPHERE configured systems .......................................... 10
2.4 Sensor membrane specifications............................................................................................... 10
2.4.1 Hydrogen sensors ............................................................................................................. 10
2.4.2 Oxygen sensors (Table 1)................................................................................................. 11
2.4.3 Oxygen sensors (Table 2)................................................................................................. 12
2.4.4 Ozone sensors .................................................................................................................. 13
Section 3 Introduction ..................................................................................................................... 15
3.1 What you have received ............................................................................................................ 15
3.1.1 An oxygen, ozone, or hydrogen electrochemical sensor .................................................. 15
3.1.2 A sensor maintenance kit.................................................................................................. 15
3.2 Basic principle of operation........................................................................................................ 15
Section 4 Installation ........................................................................................................................ 19
4.1 Initial sensor cell cleaning .......................................................................................................... 19
4.2 Positioning information............................................................................................................... 19
4.3 Sensor insertion ......................................................................................................................... 20
4.4 Sensor removal.......................................................................................................................... 20
4.5 Mounting accessories ................................................................................................................ 20
4.5.1 External pressure sensor .................................................................................................. 20
4.5.2 Weld-on stainless steel socket.......................................................................................... 21
4.5.3 Insertion/extraction valve .................................................................................................. 22
4.5.4 ORBISPHERE flow chambers .......................................................................................... 22
4.5.5 Multi parameter flow chamber........................................................................................... 24
Section 5 Maintenance ..................................................................................................................... 25
5.1 Disassembly and assembly ....................................................................................................... 25
5.1.1 Taking the sensor apart (membrane removal) .................................................................. 25
5.1.2 Sensor assembly (membrane installation) ........................................................................ 26
5.2 Electrochemical cleaning and regeneration center .................................................................... 29
5.3 Chemical cleaning: oxygen and ozone sensor cell .................................................................... 30
5.3.1 Membrane support cleaning.............................................................................................. 30
5.3.2 Electrodes ammonia cleaning ........................................................................................... 30
5.3.3 Anode and cathode nitric acid cleaning ............................................................................ 31
5.3.4 Sensor face polishing........................................................................................................ 31
5.3.5 O
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Sensor only: final center electrode cleaning ................................................................ 32
5.4 Hydrogen sensor cell cleaning................................................................................................... 33
Section 6 Troubleshooting .............................................................................................................. 35
6.1 Oxygen sensor........................................................................................................................... 35
6.2 Hydrogen sensor........................................................................................................................ 35
6.3 Ozone sensor............................................................................................................................. 36
Section 7 Spare Parts and Accessories ...................................................................................... 37
7.1 Sensor parts............................................................................................................................... 37