CS512 Dissolved Oxygen Probe
Contents
1. 1 Ib pound weight 0 454 kg Length 1 in inch 25 4 mm Pressure 1 psi Ib in 68 95 mb 1 ft foot 304 8 mm 1 yard 0 914 m Volume 1 UK pint 568 3 ml 1 mile 1 609 km 1 UK gallon 4 546 litres 1 US gallon 3 785 litres 1 oz ounce 28 35 g In addition while most of the information in the manual is correct for all countries certain information 1s specific to the North American market and so may not be applicable to European users Differences include the U S standard external power supply details where some information for example the AC transformer input voltage will not be applicable for British European use Please note however that when a power supply adapter is ordered it will be suitable for use in your country Reference to some radio transmitters digital cell phones and aerials may also not be applicable according to your locality Some brackets shields and enclosure options including wiring are not sold as standard items in the European market in some cases alternatives are offered Details of the alternatives will be covered in separate manuals Part numbers prefixed with a symbol are special order parts for use with non EU variants or for special installations Please quote the full part number with the when ordering Recycling information At the end of this product s life it should not be put in commercial or domestic refuse but sent for recycling Any batteries contained within2. 7 15 7 03 6 91 6 79 29 84 2 7 67 7 46 7 06 6 87 6 68 6 50 6 15 6 57 6 98 6 79 6 61 6 44 6 10 5 98 7 54 7 33 7 12 6 91 856 8 32 8 08 7 85 7 63 741 6 79 24 25 5 50 rsa fooal esr 644 828 612 1598 581 866 55 30 5 03 544 40 104 0 641 625 609 5 94 579 564 550 10 22 9 89 9 57 9 98 9 66 9 35 9 75 9 44 9 14 9 53 8 94 9 32 8 75 8 55 8 30 8 04 821 7 97 7 73 7 66 7 44 7 46 7 25 7 04 6 95 6 75 6 56 6 83 6 46 6 53 6 35 6 61 6 42 6 25 6 22 6 05 6 12 5 96 6 19 5 87 5 76 5 61 5 83 5 68 553 5 37 CAMPBELL SCIENTIFIC COMPANIES Campbell Scientific Inc CSI 815 West 1800 North Logan Utah 84321 UNITED STATES www campbellsci com e info campbellsci com Campbell Scientific Africa Pty Ltd CSAf PO Box 2450 Somerset West 7129 SOUTH AFRICA www csafrica co za e salesOcsafrica co za Campbell Scientific Australia Pty Ltd CSA PO Box 8108 Garbutt Post Shop QLD 4814 AUSTRALIA www campbellsci com au e info campbellsci com au Campbell Scientific do Brazil Ltda CSB Rua Apinag s nbr 2018 Perdizes CEP 01258 00 S o Paulo SP BRAZIL www campbellsci com br e vendas 2campbellsci com br Campbell Scientific Canada Corp CSC 14532 131 Avenue NW Edmonton Alberta T5L 4X4 CANADA www campbellsci ca e dataloggers campbell
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4. stabilize This may take 15 minutes or more 3 Determine the air temperature and barometric pressure 4 Using a calibration chart such as that provided in the sensor s manual determine the oxygen concentration of the air 5 Use the following equation to calculate the multiplier M P R M Multiplier P Concentration in PPM of the air from the calibration chart in Appendix A R The signal output of the OxyGuard sensor when using a multiplier of one 6 Change the multiplier in the datalogger program from one to the calculated number A more common way to enter the multiplier is to insert a separate instruction in the program This will allow a new multiplier to be added to the program without rewriting compiling and downloading the program to the data logger User Manual In the CR510 CR10X and CR23X use Instruction P36 The multiplier is entered into an input location called DOmult using the numeric display in PC200W PC208W LoggerNet PC400 PConnect PConnectCE or the CR10KD EXAMPLE 6 Sample Program using P36 57 Z X Y P36 1 X Loc DOmV 1 Di 2 Y Loc DOmult 3 3 Z Loc DOppm In all dataloggers that use CRBasic an expression is written The multiplier value is entered into the expression through the Public Table using the numeric display in PC200W LoggerNet PC400 PConnect and PConnectCE EXAMPLE 7 Sample Program using Expression DOppm DOMult DOmV 9 Maintenance 10 The CS512
5. the product or used during the products life should be removed from the product and also be sent to an appropriate recycling facility Campbell Scientific Ltd can advise on the recycling of the equipment and in some cases BEES arrange collection and the correct disposal of it although charges may apply for some items or territories For further advice or support please contact Campbell Scientific Ltd or your local agent CAMPBELL E SCIENTIFIC Campbell Scientific Ltd 80 Hathern Road Shepshed Loughborough LE12 9GX UK Tel 44 0 1509 601141 Fax 44 0 1509 601091 Email support campbellsci co uk www campbellsci co uk Contents PDF viewers note These page numbers refer to the printed version of this document Use the Adobe Acrobat bookmarks tab for links to specific sections 8 9 10 Agitator Control General Information i Specifications nein Optional Sensor Accessories Optional Agitator renee Maintenance enm Appendix A Dissolved Oxygen Tables Figures TEST er t dert i Meus DU ake 4 1 Preventing Bio fouling of the CS512 sss 4 2 CS512 with PTA Agitator iii 10 1 Agitator Wiring iii Tables G t Sensor WINE seis fenem neri tere terere 7 1 Wiring for Example 1 eene 7 2 Wiring for Example 2 sese Examples
6. 1 Sample CR1000 Program using VoltDiff sess 3 2 Sample CR200 Program eese iii einer eine 5 3 Portion of CR10X Sample Program using Pl sss 8 4 Portion of CRIOX Sample Program using P2 sess 8 5 Sample Program using VoltSE essere 8 6 Sample Program using P36 i 9 7 Sample Program using Expression sese 9 8 Sample Program using P86 and P22 Instructions sess 10 9 Sample Program using Portset sees 10 10 Sample Program using Portset sese 11 Campbell Scientific CS512 Oxyguard Type Ill Dissolved Oxygen Sensor An accurate and reliable sensor is a critical element in any measurement system The Oxyguard Stationary Sensor meets these criteria for the measurement of dissolved oxygen 1 General Information The Oxyguard Stationary Sensor is a galvanic sensor which produces a millivolt signal proportional to the amount of oxygen present in the measured medium Oxygen diffuses through the membrane onto the cathode reacts chemically and combines with the anode An electrical current is produced by this chemical reaction which is converted from microamps to millivolts by an in line resistor An in line thermistor also conditions the signal providing automatic temperature compensation With these features the sensor produces a millivolt output proportional to the oxygen present in th
7. 2 Sample 1 DOppm FP2 Sample 1 Batt_Volt FP2 EndTable DataTable Table2 True 1 Datalnterval 0 1440 Min 10 Minimum 1 Batt_Volt FP2 False False EndTable Main Program BeginProg Scan 5 Sec 1 0 Default Datalogger Battery Voltage measurement Batt_Volt Battery Batt_Volt CS512 Dissolved Oxygen Probe measurements DOmV and DOppm VoltDiff DOmV 1 mV250 1 True 0 _60Hz 1 0 DOppm DOmV 0 34 Note use exact calibration factor see section 8 Call Data Tables and Store Data CallTable Table1 CallTable Table2 NextScan EndProg EXAMPLE 2 Sample CR200 Program The CR200 series must use the VoltSE instruction since these dataloggers do not make differential measurements If the other CRBasic dataloggers use the VoltSE instruction instead of the VoltDiff instruction their programming will be similar to this example Table 7 2 shows the wiring for the example User Manual Table 7 2 Wiring for Example 2 CR200 Connection Sensor Wire SEl Brown Ground Blue Ground Clear CR200 Series Created by Short Cut 2 5 Beta Declare Variables and Units Public Batt_Volt Public DOmV Public DOppm Units Batt_Volt Volts Units DOmV2mV Units DOppm ppm Define Data Tables DataTable Tablel True 1 Datalnterval 0 60 Min Sample 1 DOmV EndTable DataTable Table2 True 1 Datalnterval 0 1440 Min Minimum 1 Batt_Volt False False EndTable Main Program BeginProg Scan 10 Sec Default
8. Datalogger Battery Voltage measurement Batt_Volt Battery Batt_Volt CS512 Dissolved Oxygen Probe measurements DOmV and DOppm VoltSE DOmV 1 1 1 0 DOppm DOmV 0 34 Note use exact calibration factor see section 8 Call Data Tables and Store Data CallTable Table1 CallTable Table2 NextScan EndProg Campbell Scientific CS512 Oxyguard Type Ill Dissolved Oxygen Sensor 7 2 Edlog Edlog Instruction 1 or 2 can be used Example 1 shows the single ended instruction for measuring the Sensorex probe example 2 shows the differential instruction The example measurement instructions that follow do not store data to final storage Additional instructions typically P92 P77 and output processing instructions such as P70 are required to store data permanently EXAMPLE 3 Portion of CR10X Sample Program using P1 1 Volt SE P1 1 Reps 24 250 mV 60 Hz Rejection Range code 23 used for CR23X 1 SE Channel 1 Loc DOmV 1 0 Multiplier See Calibration 0 0 Offset EXAMPLE 4 Portion of CR10X Sample Program using P2 Volt Diff P2 1 Reps 24 250 mV 60 Hz Rejection Range code 23 used for CR23X 1 DIFF Channel 1 Loc DOmV 1 0 Multiplier See Calibration 0 0 Offset 8 Calibration The multiplier is used to calibrate the CS512 sensor To calculate the multiplier 1 Program the datalogger using a multiplier of one 2 Place the OxyGuard sensor in the air shaded from the sun Wait for readings to
9. IVANVIA JASA rr A CAMPBELL SI SCIENTIFIC WHEN MEASUREMENTS MATTER CS512 Oxyguard Type Ill Dissolved Oxygen Sensor Issued 27 7 15 Copyright O 2001 2015 Campbell Scientific Inc Printed under licence by Campbell Scientific Ltd CSL 576 Guarantee This equipment is guaranteed against defects in materials and workmanship This guarantee applies for 24 months from date of delivery We will repair or replace products which prove to be defective during the guarantee period provided they are returned to us prepaid The guarantee will not apply to e Equipment which has been modified or altered in any way without the written permission of Campbell Scientific e Batteries e Any product which has been subjected to misuse neglect acts of God or damage in transit Campbell Scientific will return guaranteed equipment by surface carrier prepaid Campbell Scientific will not reimburse the claimant for costs incurred in removing and or reinstalling equipment This guarantee and the Company s obligation thereunder is in lieu of all other guarantees expressed or implied including those of suitability and fitness for a particular purpose Campbell Scientific is not liable for consequential damage Please inform us before returning equipment and obtain a Repair Reference Number whether the repair is under guarantee or not Please state the faults as clearly as possible and if the product is out of the guarantee period it sho
10. PT4 Agitator overcomes these problems The device is designed so that a soft bristle brush sweeps across the sensor membrane or sensor tip This sweeping action of the brush provides the required water velocity as well as prevents the membrane from becoming bio fouled The optimum sweeping frequency depends upon the design of sensor and type of membrane used and water conditions An ON time of 0 25 seconds and OFF time of 5 seconds is suitable in most circumstances Agitator s overall size 180 mm x 83 mm diameter 0 6 kg 7 1 8 x 3 1 4 1 1 4 Ib Supplied with 3 metres 10 ft cable Power required 10 5 to 18 VDC at the agitator 1 1 amps Maximum ON time is 3 seconds Campbell Scientific CS512 Oxyguard Type Ill Dissolved Oxygen Sensor Figure 4 2 CS512 with PT4 Agitator Optional Repeat Cycle Timer for Agitators Reciprocating action may be controlled by the optional solid state Repeat Cycle Timer It sends 12 VDC pulses to the agitator coil The ON time is 0 25 sec The OFF time is adjustable from 3 to 12 sec requires supply voltage 10 to 17 VDC housed in watertight cylinder 170 mm x 50 mm diameter 6 6 x 2 5 Application Information NOTE SCWin users This manual was written primarily for those whose needs are not met by SCWin Your procedure is much simpler just add the CS512 sensor it s in the water folder save your program and follow the wiring shown in Step 2 of SCWIN The CS512 sensor can use one dif
11. asa 628 o 40 104 0 6 41 6 30 6 19 Appendix A Dissolved Oxygen Tables 7 8 99 8 47 20 68 0 21 69 8 8 90 8 64 8 39 7 91 22 716 7 77 Table Il Dissolved Oxygen in Saline Water Solubility of dissolved oxygen mg L as a function of temperature and salinity for moist air at sea level 7 144 6 12 13 1174 11 37 11 00 10 65 8 146 4 10 40 9 482 10 16 SALINITY Parts per Thousand c F 0 14 11 13 64 11 90 1 33 8 13 73 13 27 12 83 12 40 11 98 11 58 2 13 81 13 45 11 85 5 41 0 12 76 12 34 11 94 11 56 11 18 6 42 8 1244 12 04 11 65 11 27 10 91 10 56 10 31 10 07 9 84 10 50 0 11 9 93 11 11 02 10 67 10 34 889 959 9 10 14 572 10 28 9 98 9 68 9 38 16 60 8 9 86 956 928 9 00 8 73 17 62 6 9 65 9 36 9 09 8 82 8 55 18 644 9 45 9 17 8 90 8 64 77 0 778 7 57 7 36 8 09 7 87 7 65 744 7 23 7 95 7433 t51 T2321 7 10 7 18 6 98 nw co 744 6 94 878 741 7 21 7 02 6 83 6 65 132 89 6 7 29 7 09 6 90 6 72 6 54 33 34 93 2 7 6 86 6 33 35 es o 6 93 6 75 6 58 640 6 24 36 96 8 6 82 6 65 6 14 37 986 6 05 9 62 8 82 16 58 0 1007 977 947 99 8 47 8 07 7 83 7 38 7 17 7 69 75 2 840 8 16 7 93 7 49 7 28 6 87 6 68
12. e medium in which it is placed The sensor consists of two parts an upper part with cathode anode and cable and a lower part comprising a screw on membrane cap with fitted membrane The cap is filled with electrolyte and simply screwed onto the top component The sensor is self polarizing and requires no external power source There are two wires to connect Because the sensor s output is linear it is possible to connect it directly to a data acquisition system capable of handling the small millivolt signal The sensor s robust construction and simple design make maintenance and servicing it straightforward There is no need to send the sensor back to the factory for servicing It utilizes a strong easy to clean and easy to change membrane in a screw on membrane cap Regular servicing is not required When necessary the sensor can be fully overhauled in five minutes Figure 1 1 CS512 2 Specifications Principle of Measurement Output Signal Repeatability Output Impedance Response Time Materials of Construction Sensor body O rings Membrane Dimensions and Weight Cable Operating Conditions Temperature Pressure Minimum Submersion Depth Minimum Water Flow Calibration Temperature Compensation Range of Dissolved Oxygen Ships with Campbell Scientific CS512 Oxyguard Type Ill Dissolved Oxygen Sensor Membrane covered galvanic oxygen sensor 2 5 to 5 mV per mg I Better than 0 2 mg l calib
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14. et Port 1 Low 48 End P95 In the CR200 series dataloggers use the Portset instruction EXAMPLE 9 Sample Program using Portset Portset 1 1 Delay 500 msec Portset 1 0 In the CR1000 CR800 CR850 and CR3000 dataloggers use the Portset instruction EXAMPLE 10 Sample Program using Portset Portset 1 1 Delay 1 500 msec Portset 1 0 The above example is not as power efficient as possible and would require AC power to maintain a sufficient battery charge If it is necessary to operate an agitator without AC power available write the program so that the agitator is only operated for a short period of time just before the measurement is to be taken Appendix A Dissolved Oxygen Tables Table I Dissolved Oxygen in Fresh Water Solubility of dissolved oxygen mg L as a function of temperature and pressure for moist air salinity 0 0 ppt ALTITUDE Feet Metres and equivalent BAROMETRIC PRESSURE mm Hg mbar o soo 1000 1500 2000 2500 3000 3500 4000 4500 5000 5500 6000 Feet oe s2 305 asz 610 702 sw 1067 rare 1972 1524 ere 1629 Metrs Terz me ver me 721 re eu en er om oso 099 78 T e14 fmm Ho e 10s 005 076 Coro er su oo en ms v ss ws ss sie mbe Fo Tian puo last ue 1900 538 1812 289 287 12401222 1201 1130 EIE 1420 Pisos 1370 ato 122 1290 vore vane 1202 vaso too Trise Tirar 13 81 Las us i pue fizet i
15. ferential channel or one single ended channel Differential wiring is better at rejecting electrical noise and ground loop error Table 6 1 Sensor Wiring CR510 CR10X CR800 CR850 Colour Function CR23X CR1000 CR3000 CR200 Series Brown Signal Differential High Single Ended or Single Ended Channel Channel Blue Signal Differential Low or AG Ground 7 Programming 7 1 CRBasic User Manual In the CR800 CR850 CR1000 CR3000 and CR5000 the VoltDiff or VoltSE can be used to measure the CS511 In the CR200 series dataloggers only the VoltSE instruction can be used since these dataloggers do not support differential measurements Example program 1 is a CR1000 program that uses the VoltDiff instruction Example Program 2 is a CR200 program EXAMPLE 1 Sample CR1000 Program using VoltDiff This example is a CR1000 program but programming for the CR800 CR850 CR3000 and CR5000 is similar Table 7 1 shows the wiring for the example Table 7 1 Wiring for Example 1 CR1000 Connection Sensor Wire 1H Brown IL Blue Ground Clear Campbell Scientific CS512 Oxyguard Type Ill Dissolved Oxygen Sensor CR1000 Created by Short Cut 2 5 Beta Declare Variables and Units Public Batt Volt Public DOmV Public DOppm Units Batt_Volt Volts Units DOmV2mV Units DOppm ppm Define Data Tables DataTable Tablel True 1 Datalnterval 0 60 Min 10 Sample 1 DOmV FP
16. ration temperature equals measuring temperature 5 C 1 kohm After equilibration 1 minute for 95 of final value Delrin Membrane O ring Buna N Body Seal O ring Viton 0 05 mm 2 mil Teflon 5 7 cm 2 28 diameter x 5 8 cm 2 3 height 450 g 15 9 oz standard length 7 m 23 ft other lengths available upon request 2 wire 22 awg shielded PVC jacketed 0 to 40 C 32 to 122 F 0 to 29 psig 60 mm 2 in 1 cm s 39 in sec across membrane In air or in air saturated water Automatic from 4 40 C 40 104 F 0 20 mg l 0 200 Sat 5 spare membranes with O rings 50 ml electrolyte cathode cleaning pad User Manual 3 Optional Sensor Accessories 009994 PT4 Agitator for stagnant conditions 010315 DO electrolyte 1 litre 010314 Membrane kit 10 membranes 4 Optional Agitator available to special order only The PT4 Agitator is a reliable and robust agitator for use in conjunction with sensors subjected to bio fouling in ponds and stagnant water conditions O sensors require a minimum water velocity across their membranes to function properly Therefore to measure DO in stagnant water conditions 1t is necessary to move the water past the membrane to get accurate and reliable DO measurements In many instances the water also has a high bio loading and the sensors become fouled resulting in inaccurate DO measurements Figure 4 1 Preventing Bio fouling of the CS512 The
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18. sensor needs little maintenance Regular cleaning of the membrane is all that is required The membrane is very durable and can be cleaned with a cloth or soft paper Do not scratch it clean with your fingernail Agitator Control In low flow conditions less than about 5 cm sec it may be necessary to add an agitator to the CS512 sensor Campbell Scientific ships the agitator with a repeat cycle timer Using the repeat cycle timer requires no datalogger programming However some users choose to use a solid state relay and have the datalogger agitate the water on the sensor face either periodically throughout the day or just before measurement Agitating just before the measurement saves on power and causes less wear and tear on the agitator and sensor membrane The wiring for the agitator as controlled by this example program would be as follows Ground Agitator Datalogger 7321 Relay Crydom D1D07 Port C1 WHITE 12 V Battery Figure 10 1 Agitator Wiring Campbell Scientific CS512 Oxyguard Type Ill Dissolved Oxygen Sensor 10 The following instructions would trigger the agitator as discussed in the agitator manual In the CR510 CR10X and CR23X use instruction P86 and P22 EXAMPLE Sample Program using P86 and P22 Instructions 45 Do P86 1 41 Set Port 1 High 46 Excitation with Delay P22 1 Ex Channel 0 Delay W Ex units 0 01 sec 0 Delay After Ex units 0 01 sec 0 mV Excitation 47 Do P86 1 51 S
19. uld be accompanied by a purchase order Quotations for repairs can be given on request It is the policy of Campbell Scientific to protect the health of its employees and provide a safe working environment in support of this policy a Declaration of Hazardous Material and Decontamination form will be issued for completion When returning equipment the Repair Reference Number must be clearly marked on the outside of the package Complete the Declaration of Hazardous Material and Decontamination form and ensure a completed copy is returned with your goods Please note your Repair may not be processed if you do not include a copy of this form and Campbell Scientific Ltd reserves the right to return goods at the customers expense Note that goods sent air freight are subject to Customs clearance fees which Campbell Scientific will charge to customers In many cases these charges are greater than the cost of the repair x CAMPBELL SCIENTIFIC Campbell Scientific Ltd 80 Hathern Road Shepshed Loughborough LE12 9GX UK Tel 44 0 1509 601141 Fax 44 0 1509 601091 Email support campbellsci co uk www campbellsci co uk PLEASE READ FIRST About this manual Mass Please note that this manual was originally produced by Campbell Scientific Inc primarily for the North American market Some spellings weights and measures may reflect this origin Some useful conversion factors Area 1 in square inch 645 mm
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