User Guide
Contents
1. cccccssccessssseceeessecenenerenees 12 24 VDC Battery Versions NimH internal Patter y EE 7 2VDC CONSUMPTION EE 1 4 watts Battery life at 20 C EE 7 hours Measurement parameters ProDe ly TE Sealed Galvanic Probe lead length nal a winaaincaennaencanicnnaxnnes denna neem NEE ENKEN ENN e 25m Probe operating temperature range ccccssccceencccesensceceensereeenes 0 to 40 C DE FANG CG NNN ee ERKENNEN SEN NEE ANE EN EENN NNN ENN KN ug 0 to 40mg l DOzaccuracy instrument minus Drobe ees 3 rdg 0 1mg DOsGISDIGY resolution EE 0 1mg l Maximum Probe Depth E 2 5 mtrs 6 Abbreviations Note Abbreviations are the same in singular or plural DO Dissolved Oxygen LED LightEmtting Diode AC Alternating Current DC Direct Current RTD Resistive Temperature Device mg l milligrams per litre C Degrees Celsius P C Personal Computer Kms Kilometers IP Ingress Protection gms grammes KCL Potassium Chloride mm Hg millimeters of mercury mb millibar 7 Initial Usage D01020 When connecting the D01020 to the power source observe the input voltage setting for either 110VAC 230VAC or 12 24VDC Observe the fuse rating for the unit of T500mA 20mm size If supplied connect the power switch or O2 control valve to the 5 pin connector on the side of the DO1020 Connect the DO probe to the 6 way connectors on the side of the DO1020 Connection is only fitted with option A RS485 Remove the cover from the power switch and c2. lakes and turning on the installed aeration system when it s actually required thus saving energy Channel 1 AOV The system can also be used to control DO2 in both static and transportation tanks AOV Static monitoring of DO2 with remote link with up to 24 DO102X connected DO102X User Manual E 3 DO102X User Manual 2 Safety The manufacturer has designed this product to be safe when operated correctly Please take care to read any safety instructions as these have been designed to protect the user from personal injury and the equipment from damage O amp H Designs are not responsible for errors in usage or connection and accept no responsibility for consequential losses 3 Electrical Safety The DO102X should be installed by a qualified electrician familiar with IEEE ed 18 regulations or VDE Users should be fully trained in safe operational conditions of mains based equipment 12 24VDC versions can be installed with minimal electrical training Note that all IP integrity ratings quoted are when the DO102X units are screwed together and all mating seals are compressed O amp H Designs accepts no responsibility for personal injury or equipment failure due to water ingress as a result of poor installation 4 Mounting The DO102X can be used as a standalone system
3. DO102X Series Dissolved O Monitor Controller User Manual Note Software functionality covers 1020 1022 amp 1024 1026 variants O amp H Designs 35 Barton Rd Barlestone http www ohdesigns co uk Warwickshire contact ohdesigns co uk CV13 OER England Tel 01455 290 620 This document is the property of O amp H Designs and may not be reproduced nor stored on any data processing system either in part or whole without the written permission of O amp H Designs DO102X User Manual Contents PG et gel 3 EE 4 El ctrical ENEE 4 MOUntind ttte a a a a a a 4 Specifications eee tet e e e e R E 4 Abbrewvlatlonsg EE 5 Initial Usage Ka EK GE WE 5 Initial Usage DO1021 22 24 26 n 6 Probe Placement ee 6 Calibrations ee ee ee ee ee ee eee ee 7 E EE 8 Setting Ae 9 Minimum amp MaX MUM Bee 9 Setting Atmospheric Press re eenegen 10 Se RU ener 11 Pl tinum Resistance Probe nee aa Be ah ee need ee 12 Probe Temp rature Coefficient attatched 12 Service amp Warrantycneee 13 DO102X User Manual E 2 DO102X User Manual 1 Introduction The DO102X series are advanced microprocessor controlled Dissolved Oxygen monitors They will provide long periods of unattended service and can be used in monitoring or control applications Typical set up for single channel versions is shown below Channel 1 240 VAC 16A MAX LOAD l INTERNALLY FUSED T10A Measuring Dissolved Oxygen levels in tanks ponds and
4. and installed both indoors or outdoors using customer preferred mountings Alternatively the DO102X series is designed to be mounted to a 65mm OD pole or with appropriate fixings to a wall using the option B kit For remote applications the option A system can be connected to a P C up to 2 kms distance via RS485 The display amp power switch can therefore be mounted near to the probe and remote readings can be obtained and logged onto a computer When monitoring Oxygen levels in transportation tanks ensure that the probes are continually immersed during use Do not position the probe direct over the Oxygen diffusers The same rule applies to aerators 5 Specifications ent EE EN61010 EN61326 1 97 23 EC CE marked Environmental Temperature Electronics ex eENieuge e de ENNEN ENNER RE EE SEN 10 to 40 C Storages EE 20 to 50 C Sealing KEE E IP65 Weight approximate DOLO2X cccccccceessceeensseeeensseceunsnecneeees 450gms Weight approximate DO1024 ccccccssccceseseceeueeeeensesenecceeens 1100gms DO102X User Manual E 4 DO102X User Manual Dimensions D01020 Ven VE 100 mm NC is 2caad s wtwiiaaneen anna taiecnniacwaliubeaiy oie enluipewa ANTEE ENAA Ea 60mm DO PEM EE 100mm Dimensions D01024 UU eg EE 213 mm NET Ar 119 mm RI 185 mm Power supply Mains f actory E A EEN 110 230 VAC Power CONSUMPTION gege AEN cnn ENNEN NENNEN dE ENNEN dE ENNEN KENNEN 2 watts Low voltage option factory Set
5. be Temperature Coefficent This is shown as TC in the calibration menu DO2 SAL PrES rtd TC End Do not adjust this value as the probe will display incorrect readings at differing temperatures Defaults values are typically 1 6 DO102X User Manual E 12 DO102X User Manual The reading is factory calibrated and should not require re calibration during normal service life of the probe Contact O amp H Designs for details of re calibration 18 Service amp Warranty For more information on the DO102X contact us directly or an approved agent O amp H Guarantees the unit to be free of defects for a period of 12 months from date of manufacture This does not cover damage to the probe tip caused by unreasonable use This warranty excludes incidental or consequential damages arising from the use of this product O amp H Designs provides a service capability for their products Replacement probes and other spare parts are available direct O amp H Designs also offers a recalibration service for all environmental parameters This can be on any interval as required by the customer 2011 O amp H Designs O8 amp H Designs 35 Barton Rd Barlestone http www ohdesigns co uk Warwickshire contact ohdesigns co uk CV13 OER England Tel 01455 290 620 DO102X User Manual E 13
6. data E g collection of upper amp lower DO readings during fish transportaion or capturing diurnal variations in lakes amp ponds Press the key to display the maximum reading since reset Press the key V to display the minimum reading since reset DO102X User Manual E 9 DO102X User Manual To reset press A V High amp Low will now be reset The display will flash rSt 14 Setting Atmospheric Pressure If large swings in atmospheric pressure occur due to either altitude or weather variations readings can be corrected for maximum accuracy Table 1 pg11 illustrates the relative corrections that can be applied Enter the calibration menu by pressing the following keys together for 3 seconds AOV The calibration menu will now be available DO2 SAL PrES rtd TC End Use the keys N V to scroll through the menu Select PrES D DO2 SAL PrES rtd TC End The display will show the default of 760 mm Hg Use the keys AV to adjust if required Press the key D to accept the pressure reading The display will flash dOnE Use the keys A V to select End Press the key D to quit to normal reading DO102X User Manual E 10 DO102X User Manual The effects of adjustment of pressure are shown below The DO102X will apply the relevant correction factors Table 1 Pressure mpeg 0 100 750 1 01 200 741 1 03 300 732 1 04 400 723 1 05 500 714 1 06 15 Setting Salinity If the instrument is usaed in brackish or seawater t
7. elect DO2 D DO2 SAL PrES rtd TC End The 100 calibration point is now shown Use the keys A V to adjust between 95 105 Press the key D when the reading is stable to accept calibration To quit use A V to select DO2 SAL PrES rtd TC End Press the key D to quit The display will now read the calibrated value in mg l Usually calibrate at 105 to allow for localised O consumption DO102X User Manual E 8 DO102X User Manual 12 Setting Upper and Lower alarm Note the alarm levels are set to 0 on the DO1021 The upper setting is normally used for circulators when high oxygen levels are present High output circuitry is fitted on request Lower outputs set the lower limits to either sound an alarm or turn on aeration or oxygenation Hold the keys A IT for 1 second to select HIGH setting The display will flash HI Hold the keys V D for 1 second to select LOW setting The display will flash LO Use the keys A V to adjust high or low settings Press the key D to accept the high or low alarm point The display will flash dOnE The display shall now show the normal reading When either the High or Low alarms are exceeded the display will flash and the appropriate power switch or valve connected will operate until the readings return to a normal level 13 Minimum amp Maximum readings The minimun amp maximum feature allows upper amp lower trends in readings to be recorded This can be usefull for collecting DO
8. hen a salinity correction factor can be applied to obtain maximum accuracy Table 2 pg12 illustrates the relative corrections that can be applied Enter the calibration menu by pressing the following keys together for 3 seconds AOV The calibration menu will now be available DO2 SAL PrES rtd TC End Use the keys V to scroll through the menu Select SaL D DO2 SAL PrES rtd TC End The display will show the default of 0 parts per thousand ppt Use the keys A V to adjust if required Press the key D to accept the salinity reading The display will flash dOnE DO102X User Manual E 11 DO102X User Manual Use the keys A V to select End Press the key C to quit to normal reading The table below shows the effects of salinity on the readings and the factor the DO102X will appply Table 2 Salinity ppt Factor 0 1 5 0 97 10 0 94 15 0 91 20 0 88 25 0 85 30 0 83 35 0 8 16 Platinum Resistance probe The platinum resistance probe RTD provides an accurate temperature reading used for correcting for DO probe variations This is shown as rtd in the calibration menu DO2 SAL PrES rtd TC End This reading is normally factory calibrated and should not require re calibration during normal service life of the probe Contact O amp H Designs for details of re calibration Pressing the key will give a probe temperature reading in C This will remain on the display for 5 seconds then revert back to DO 17 Pro
9. onnect the mains device to the relevant output via the terminal blocks High or Low DO102X User Manual E 5 DO102X User Manual H Desig 240 VAC 16A MAX LOAD E HIGH ACTIVE ALARM d LOW INTERNALLY FUSED T10A L com CIRCULATE TB7 NO ka K3 Fst We Fuses EC mg VAG ICOM 4 HIGH 788 TB9 LOW NO O20 RE E H a 9 Si LOW i AERATION C When the unit is powered up allow at least 5 minutes for stabilisation 8 Initial Usage DO1021 22 24 amp 26 Connect the DO probes to the 6 way connectors on the bottom of the unit Ensure these are only finger tight If a valve control system is used connect to the 8 way control socket and 2 way valve power using the supplied cables If fitted fuse ratings are T2A 20mm size for fuses on the display boxes Cigar style plugs have an integral 8A automotive cartridge fuse If charging is required connect the charger port via the Cigar style connector or charge via the supplied mains charger for 12 14 hours Pressing the power switch will turn the unit on and the system will go through a self test The default display units are now shown in mg l of DO Pressing the key will give a probe temperature reading in C This will remain on the display for 5 seconds then revert back to DO 9 Probe Placement Ensure that the clear protective sealing ca
10. p is removed prior to deployment During operation place the probe in a vertical position with the probe tip facing downwards This is indicated on the side of the Probe housing When positioning the probe in the water to be monitored Take care to locate away from the direct influence of aerators Oxygen diffusers DO102X User Manual E 6 DO102X User Manual Actual position when immersed is dependant on depth profile width and length therefore actual placement postion will be found by in situ testing When a new probe has been installed allow 30 mins before calibration 10 Calibration All DO102X systems are supplied with a default calibration at 100 water saturated air at 1013mb pressure All normal readings are in mg l It is recommended that the sensor is recalibrated at regular intervals This is dependant upon the suspended solids and build up of algal growth during that period In areas of hardwater check for calcification deposits around the probe tip It s recommended that water is removed from the probe tip after use Regular checks are necessary Use a soft brush or moistened tissue to remove buildup from the probe tip The probe is a sealed Galvanic type and thus requires no KCL solution for filling Life expectancy in normal use is approx 30 months DO NOT Direct high pressure water jets onto the probe tip as this could damage the membrane Use abrasive wipes on the probe membrane Clean the probe
11. with chemicals such as Isopropyl Alcohol Allow contact with the membrane whilst calibrating the 100 point Take readings directly after immersion in water Allow at least 10 mins for the DO probe tip and internal compensation electronics to stabilise DO Use clean de ionised water to clean probe tip Use of a soft brush is advised Position the probe in a vertical position during calibration Allow 10 mins before calibration to allow the DO2 probe to reach equilibrium with ambient conditions Replace the protective cap half filled with de ionised water This is only required if stored for long periods Allow for probe errors in completely static water which may be up to 0 5mg l this is normally accounted for when setting high or low alarms Dry any excess water from the probe tip before calibration Use of a soft tissue is advised DO102X User Manual E 7 DO102X User Manual 11 Method Calibration should be carried out in a temperature range of 15 25 C The zero 0 point is extremely stable and factory set it therefore requires no calibration adjustment The following method details calibration for the 100 point Enter the calibration menu by pressing the following keys together for 3 seconds AOV Quick Cal You can also get to the DO calibration by holding the middle key down for 5 seconds The calibration menu will now be available DO2 SAL PrES rtd TC End Use the keys V to scroll through the menu S
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