Campbell Scientific CS512 Oxyguard Type III Dissolved Oxygen Probe Revision: 12/06 C o p y r i g h t © 2 0 0 1 - 2 0 0 6 C a m p b e l l S c i e n t i f i c , I n c .
Warranty and Assistance The CS512 OXYGUARD TYPE III DISSOLVED OXYGEN PROBE is warranted by CAMPBELL SCIENTIFIC, INC. to be free from defects in materials and workmanship under normal use and service for twelve (12) months from date of shipment unless specified otherwise. Batteries have no warranty. CAMPBELL SCIENTIFIC, INC.'s obligation under this warranty is limited to repairing or replacing (at CAMPBELL SCIENTIFIC, INC.'s option) defective products.
CS512 Table of 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. 1. General Information.....................................................1 2. Specifications ..............................................................2 3. Optional Probe Accessories.......................................3 4. Optional Agitator .........................................................3 5.
CS512 Table of Contents Examples 1. Sample Program using P1 .......................................................................... 5 2. Sample Program using P2 .......................................................................... 5 3. Sample Program using VoltSE .................................................................. 5 4. Sample Program using VoltDiff ................................................................ 5 5. Sample Program using VoltSE .......................................
Campbell Scientific CS512 Oxyguard Type III Dissolved Oxygen Probe An accurate and reliable sensor is a critical element in any measurement system. The Oxyguard Stationary Probe meets these criteria for the measurement of dissolved oxygen. 1. General Information The Oxyguard Stationary Probe is a galvanic probe which produces a millivolt signal proportional to the amount of oxygen present in the measured medium.
Campbell Scientific CS512 Oxyguard Type III Dissolved Oxygen Probe 2. Specifications Principle of Measurement: Membrane covered galvanic oxygen probe Output Signal: 2.5 to 5 mV per mg 1-1 Repeatability: Better than ±0.2 mg/l calibration temperature equals measuring temperature ±5°C Output Impedance: ∼1 kohm Response Time: After equilibration, 1 minute for 95% of final value Materials of Construction: Probe body: O-rings: Membrane: 2 Delrin Membrane O-ring = Buna N Body Seal O-ring = Viton 0.
Campbell Scientific CS512 Oxyguard Type III Dissolved Oxygen Probe 3. Optional Probe Accessories PT4-L — Agitator for stagnant conditions 18026 — DO electrolyte, 1 liter 18027 — Membrane kit, 10 membranes 4. Optional Agitator The PT4 Agitator is a reliable and robust agitator for use in conjunction with probes subjected to bio-fouling in ponds and stagnant water conditions. O2 probes require a minimum water velocity across their membranes to function properly.
Campbell Scientific CS512 Oxyguard Type III Dissolved Oxygen Probe 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 6.6" x 2" diameter (170 mm X 50 mm). 5.
Campbell Scientific CS512 Oxyguard Type III Dissolved Oxygen Probe 7. Programming In the CR510, CR10X, and CR23X datalogger, Instruction P1 or P2 can be used. Example 1 uses a single-ended measurement for the CS512 probe; example 2 uses a differential measurement. 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 1.
Campbell Scientific CS512 Oxyguard Type III Dissolved Oxygen Probe 8. Calibration The multiplier is used to calibrate the CS512 probe. To calculate the multiplier: 1) Program the datalogger using a multiplier of one. 2) Place the OxyGuard probe in the air, shaded from the sun. Wait for readings to stabilize. This may take 15 minutes or more. 3) Determine the air temperature and barometric pressure.
Campbell Scientific CS512 Oxyguard Type III Dissolved Oxygen Probe 9. Maintenance The CS512 probe 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. 10. Agitator Control In low flow conditions (less than about 5 cm/sec), it may be necessary to add an agitator to the CS512 probe. Campbell Scientific ships the agitator with a repeat cycle timer.
Campbell Scientific CS512 Oxyguard Type III Dissolved Oxygen Probe EXAMPLE 8. Sample Program using P86 and P22 Instructions 45: Do (P86) 1: 41 Set Port 1 High 46: Excitation with Delay (P22) 1: 1 Ex Channel 2: 20 Delay W/Ex (units = 0.01 sec) 3: 0 Delay After Ex (units = 0.01 sec) 4: 0 mV Excitation 47: Do (P86) 1: 51 Set Port 1 Low 48: End (P95) In the CR200 series dataloggers, use the Portset instruction. EXAMPLE 9.
Appendix A.
Appendix A.
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