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Summary of Contents for Campbell CS526
- Page 1 CS526 ISFET pH Probe Revision: 6/13 C o p y r i g h t © 2 0 0 9 - 2 0 1 3 C a m p b e l l S c i e n t i f i c ,...
- Page 3 Warranty The CS526 ISFET pH Probe is warranted for six (6) months subject to this limited warranty: “PRODUCTS MANUFACTURED BY CAMPBELL SCIENTIFIC, INC. are warranted by Campbell Scientific, Inc. (“Campbell”) to be free from defects in materials and workmanship under normal use and service for twelve (12) months from date of shipment unless otherwise specified in the corresponding Campbell pricelist or product manual.
- Page 4 SCIENTIFIC, INC., phone (435) 227-9000. After an applications engineer determines the nature of the problem, an RMA number will be issued. Please write this number clearly on the outside of the shipping container. Campbell Scientific's shipping address is: CAMPBELL SCIENTIFIC, INC.
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Page 5: Table Of Contents
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 2. Cautionary Statements..........1 3. Initial Inspection ............2 4. Quickstart ..............2 5. - Page 6 11.2.2 Long-Term Storage (more than 2 days) ........11 Appendix A. Calibration ...............A-1 Example Calibration Program ............A-2 Figures 11-1. Tip of the CS526 probe ..............10 Tables 7-1. CR800, CR850, CR1000, and CR3000 Wiring ........4 8-1. “Get Data” Command and Response........... 5 8-2.
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Page 7: Introduction
CS526 ISFET pH Probe Introduction The CS526 ISFET pH Probe measures pH from 1 to 14 in aqueous or semi- solid solutions. It outputs TTL serial data that is read by compatible dataloggers (see Section 6, Specifications). Before using the CS526, please study •... -
Page 8: Initial Inspection
For complete installation, programming, and calibration information, see Sections 7 through 9. The CS526 is shipped dry. Before the probe can be calibrated, it must be soaked in 7-pH buffer solution for 15 minutes. Follow the calibration procedure outlined in Appendix A, Calibration. -
Page 9: Overview
The CS526 is suitable for demanding applications in laboratory and field. The ISFET performs well in solutions with high solids, moderately aggressive chemicals, and biological materials. -
Page 10: Installation And Wiring
Installation and Wiring Preparation for Use The CS526 is shipped dry. Before the probe can be calibrated, soak it in 7-pH buffer solution for 15 minutes. Unlike many glass-bulb type pH sensors, the CS526 ISFET pH probe can be installed without regard to orientation. -
Page 11: Programming
Programming Get Data Command The datalogger needs to send a “get data” serial command to the CS526 to get the pH data. This command is sent to the CS526 via the SerialOut() CRBasic instruction (see Section 8.2.2.2, SerialOut() Instruction). TABLE 8-1 shows the “get data”... -
Page 12: Instruction Descriptions
CS526 ISFET pH Probe NOTE Probe output is “Counts”. A corrected multiplier and offset are required to provide an output in pH units (see Appendix A, Calibration). 8.2.2 Instruction Descriptions 8.2.2.1 SerialOpen() Instruction The SerialOpen() instruction has the following syntax: SerialOpen(ComPort,BaudRate,Format,TXDelay,BufferSize) ComPort —... -
Page 13: Splitstr() Instruction
SplitOption — enter 0. This splits out numeric values. 8.2.3 Example Program The following is a CR1000 program that measures the CS526. This program assumes the CS526 is connected to COM1 (C1 / TX and C2 / RX) on the CR1000. 'CR1000 Series Datalogger... -
Page 14: Calibration
/ fouling nature of the measured samples. 10. Troubleshooting NOTE If the CS526 is not operating properly and requires return to Campbell Scientific, first obtain an RMA (returned material authorization) and fill out the Declaration of Hazardous Material and Decontamination form. -
Page 15: Maintenance
Soak probe for 10 minutes in saturated KCl solution (pn 16349). Probe cannot be fixed if chip is scratched. 11. Maintenance The CS526 needs to be periodically cleaned and calibrated CAUTION to ensure accurate readings and proper operation. The CS526 has no user-serviceable parts. -
Page 16: Cleaning Procedure
Diaphragm Chip FIGURE 11-1. Tip of the CS526 probe 3. Rinse thoroughly with deionized water. 4. Revitalize the probe (Section 11.1.3, Revitalizing) 5. Calibrate the probe (Appendix A, Calibration). -
Page 17: Revitalizing
CS526 ISFET pH Probe • Proteins, fats, and oils may be removed by scrubbing in a solution of Terg- A-Zyme (Alconox company), a pepsin solution, or a similar product. Afterwards, rinse thoroughly with deionized or distilled water. • Do not use hydrofluoric acid, acetone, MEK, or similar agents to clean the probe. - Page 18 CS526 ISFET pH Probe...
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Page 19: Calibration
6. Place the CS526 in a pH-4 buffer solution (pn 25587). 7. Allow the [pHmV] reading to stabilize. 8. Change the value in [pH4record] to -1. 9. Change the value in [pHcal] to -1. 10. The CS526 is now ready to be placed in the solution to be measured. -
Page 20: Example Calibration Program
Appendix A. Calibration A.1 Example Calibration Program Following is a simple example program to facilitate the two-point calibration. Although this is a CR1000 program, the other dataloggers are programmed similarly. 'CR1000 Series Datalogger 'Define Variables Public pH, pHCount Public PTemp, batt_volt Public pH4record, pH4Count Public pH7record, pH7Count Public pHcal, pHmult1... - Page 22 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 Scientific Australia Pty. Ltd. (CSA)
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