Hach-lange ORBISPHERE 31xxx Installation and Maintenance User Manual

Document Number DGEC-MAN/EORBISPHERE Model 31xxxElectrochemical SensorsINSTALLATION and MAINTENANCE MANUALJune 2010, Revision H

8General Information1.6 Restriction of hazardous substances (RoHS)The European Union RoHS Directive and subsequent regulations introduced in member st

9Section 2 Technical SpecificationsSpecifications are subject to change without notice.2.1 Sensor design• All ORBISPHERE electrochemical sensors’ encl

10Technical Specifications2.3 EC sensors and parts used on ORBISPHERE configured systems2.4 Sensor membrane specifications2.4.1 Hydrogen sensors Table

11Technical Specifications2.4.2 Oxygen sensors (Table 1)Table 4 Membrane specifications - Oxygen sensors (1)Membrane Model 2956A 2958A 29552A 2952ARe

12Technical Specifications2.4.3 Oxygen sensors (Table 2)Table 5 Membrane specifications - Oxygen sensors (2)Membrane Model 2935A 29521A 2995ARecommen

13Technical Specifications2.4.4 Ozone sensorsTable 6 Membrane specifications - Ozone sensorsMembrane Model 2956A 29552ARecommended applicationsTrace

14Technical Specifications

15Section 3 Introduction3.1 What you have received Check that all mounting hardware is included. Note that, unless the sensor is part of ORBISPHERE eq

16IntroductionThe sensor is designed with one center electrode (cathode) and one counter electrode (anode) immersed in an electrolytic solution. The e

17IntroductionFigure 5 Electrochemical sensors

18Introduction

19Section 4 Installation4.1 Initial sensor cell cleaningYour ORBISPHERE electrochemical sensor has been thoroughly cleaned and tested at the factory.

20Installation4.3 Sensor insertion• Insert the sensor straight into the flow chamber or socket.• Hand tighten the attaching collar.• Connect the senso

21InstallationCAUTIONDo NOT exceed the pressure range of the sensor. This would permanently deform the sensor membrane, thus delivering incorrect pres

22Installation4.5.3 Insertion/extraction valveThe ORBISPHERE 32003 insertion/extraction valve allows for sensor removal and installation without havin

23InstallationThe connection diagram below is a recommended installation that allows for measuring and calibrating without having to disconnect a line

24Installation4.5.5 Multi parameter flow chamberNote: Suitable only for gaseous media. The ORBISPHERE 32002.xxx multi parameter flow chamber can accom

25Section 5 Maintenance5.1 Disassembly and assembly 5.1.1 Taking the sensor apart (membrane removal)It is important to install the electrochemical sen

26Maintenance5.1.2 Sensor assembly (membrane installation)Before starting the sensor reassembly, proceed to the sensor maintenance section for anode a

27MaintenanceFor the correct electrolyte selection, please refer to the table in Sensor parts on page 37.Using the syringe or bottle nozzle included i

1Table of ContentsSection 1 General Information...

28MaintenancePlace the membrane holding ring on the installation tool tip. CAUTIONTo avoid damaging the membrane, make sure that the tool tip is total

29MaintenanceNote: A sensor that has been taken apart or serviced must always be calibrated. Allow the sensor to settle for 30 minutes, before perform

30Maintenance5.3 Chemical cleaning: oxygen and ozone sensor cellNote: Not applicable for H2 sensors. The following supposes that the sensor has been t

31Maintenance5.3.3 Anode and cathode nitric acid cleaning5.3.4 Sensor face polishingCheck for the absence of silver deposit on the central guard ring

32Maintenance5.3.5 O3 Sensor only: final center electrode cleaning Once the O3 sensor has been successfully cleaned and polished, a final nitric acid

33Maintenance5.4 Hydrogen sensor cell cleaningConditionsThe hydrogen analyzer works on the principle that hydrogen molecules, passing through the memb

34Maintenance

35Section 6 Troubleshooting6.1 Oxygen sensor6.2 Hydrogen sensorTable 8 Troubleshooting - Oxygen sensorProblem Probable Cause Possible SolutionSensor

36Troubleshooting6.3 Ozone sensor When the O3 sensor has been properly calibrated using the ORBISPHERE measuring instrument, the sensor has to settle

37Section 7 Spare Parts and Accessories7.1 Sensor parts7.2 Accessories7.3 Flow chambers and installation devicesTable 11 Sensor spare partsPart N° De

2Table of Contents7.2 Accessories...

38Spare Parts and Accessories32006Flow chamber in stainless steel (316) for use with for model 28117 and 28117.C pressure sensors.32007D Flow chamber

39Spare Parts and Accessories7.4 Protection caps and related part kitsProtection cap, typical1. Protection cap2. Tefzel® washers3. Grille4. Dacron® (o

40Spare Parts and Accessories7.5 Maintenance kits for EC sensorsThe maintenance kit delivered with a new ORBISPHERE sensor includes enough consumables

41Spare Parts and Accessories7.5.2 Kits for O3 sensors7.5.3 Kits for H2 sensorsTable 16 Kits for ozone sensorsPart N° Description32731Kit for ozone e

42Spare Parts and Accessories

3Section 1 General Information1.1 DisclaimerThe information in this manual has been carefully checked and is believed to be accurate. However, Hach La

4General Information1.3.3 Precautionary labelsRead all labels and tags attached to the sensor. Personal injury or damage to the sensor could occur if

5General Information1.4 Product recycling informationENGLISHElectrical equipment marked with this symbol may not be disposed of in European public dis

6General InformationSVENSKAElektronikutrustning som är märkt med denna symbol kanske inte kan lämnas in på europeiska offentliga sopstationer efter 20

7General Information1.5 Product disposalNote: The following only applies to European customers.Hach Lange is committed to ensuring that the risk of an