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Campbell CS525 Instruction Manual

Manual is about: ISFET pH Probe

Summary of CS525

  • Page 1

    Cs525 isfet ph probe revision: 10/11 c o p y r i g h t © 2 0 0 9 - 2 0 1 1 c a m p b e l l s c i e n t i f i c , i n c ..

  • Page 3: Warranty

    Warranty the cs525 isfet ph probe is warranted for a period of 6 months subject to the provisions of the following general warranty. “products manufactured by campbell scientific, inc. Are warranted by campbell scientific, inc. (“campbell”) to be free from defects in materials and workmanship under ...

  • Page 4: Assistance

    Assistance products may not be returned without prior authorization. The following contact information is for us and international customers residing in countries served by campbell scientific, inc. Directly. Affiliate companies handle repairs for customers within their territories. Please visit www...

  • Page 5: Cs525 Table of Contents

    Cs525 table of contents pdf viewers: these page numbers refer to the printed version of this document. Use the pdf reader bookmarks tab for links to specific sections. 1. Introduction..................................................................1 1.1 initial inspection and handling guidelines .....

  • Page 7: Cs525 Isfet Ph Probe

    Cs525 isfet ph probe the cs525 probe is designed for general ph measurements in aqueous or semi-solid solutions. It provides a 0 to 5 vdc output that represents a 0 to 14 ph range. The cs525-l isfet ph sensor is highly susceptible to ground looping and galvanic conditions. In many cases this can be ...

  • Page 8: 2.  Specifications

    Cs525 isfet ph probe connected in the correct way to the datalogger. Any other combinations might cause a loss of performance and irreversible damage to both probe and/or datalogger. 1.1 initial inspection and handling guidelines upon receipt of the cs525, inspect the packaging for any signs of ship...

  • Page 9: 3.  Installation and Wiring

    Cs525 isfet ph probe 3. Installation and wiring campbell scientific only offered the 0 to 5000 mv output range for cs525 probes ordered before january 2010. These probes had four wires instead of five. Wire colors were red (signal), black (power), white (signal reference), and clear (shield). Note 3...

  • Page 10: 4.  Programming

    Cs525 isfet ph probe table 3-2. Cr200(x) series wiring wire color wire label/function vdiv2:1* cr200(x) series red power 5 vdc ex black signal reference g white signal h se clear shield g *when using the vdiv2:1 with the cr200(x)-series datalogger, the l peg of the vdiv2:1 is not used and can be rem...

  • Page 11

    Cs525 isfet ph probe ‘cr200(x) series ‘declare the variable for the ph measurement public phmv ‘read sensor every 60 seconds beginprog scan(60,sec) ‘turn power on, delay for 30000 microseconds, then measure sensor exdelse(phmv,1,1,ex1,mv5000,30000,1,0.0) nextscan endprog 4.2.1.2 cr800, cr850, cr1000...

  • Page 12: 5.  Calibration

    Cs525 isfet ph probe below is an example program for cr800, cr850, cr1000, and cr3000 dataloggers when the sensor has a ±400 mv output (see note below). ‘cr1000 series datalogger ‘declare the variable for the ph measurement public phmv ‘read sensor every 60 seconds beginprog scan(60,sec,1,0) ‘code f...

  • Page 13

    Cs525 isfet ph probe the cs525 has no user-serviceable parts. Cable can be damaged by abrasion, rodents, sharp objects, twisting, crimping or crushing and pulling. Take care during installation and use to avoid cable damage. 6.1 cleaning it is possible that contamination on the diaphragm will block ...

  • Page 14: 7.  Troubleshooting

    Cs525 isfet ph probe 8 7. Troubleshooting the most common causes for erroneous ph data include: • poor sensor connections to the datalogger • damaged cables • scratched chip problem: output signal is at its maximum value. Possible reason: • probe is not in fluid. • chip is polluted. • diaphragm is p...

  • Page 15: Appendix A.  Calibration

    Appendix a. Calibration this calibration process uses a 7 ph and 4 ph buffer solution (csi part number). After downloading the following example program onto the datalogger, and insuring that the cs525 is properly wired to the datalogger, the operator would use the numeric display found in the softw...

  • Page 16

    Appendix a. Calibration a-2 battery (batt_volt) voltse (phmv,1,mv5000,1,false,0,_60hz,1,0) if ph4record = -1 then ph4mv = phmv ph4record = 0 endif if ph7record = -1 then ph7mv = phmv ph7record = 0 endif if phcal = -1 then phmult = 3/(ph7mv - ph4mv) phoffset = 7 - phmult * ph7mv phcal = 0 endif ph = ...

  • Page 18

    Campbell scientific companies campbell scientific, inc. (csi) 815 west 1800 north logan, utah 84321 united states www.Campbellsci.Com • info@campbellsci.Com campbell scientific africa pty. Ltd. (csaf) po box 2450 somerset west 7129 south africa www.Csafrica.Co.Za • cleroux@csafrica.Co.Za campbell sc...