User manual EUTECH INSTRUMENTS WATERPROOF CYBERSCAN PC 10 PHCONDUCTIVITY METER

[. . . ] Instruction Manual PC 10 Waterproof Hand-held pH/Conductivity/Temperature Meter 68X230401 Rev 5 08/04 Technology Made Easy . . . Preface This manual serves to explain the use of the Waterproof PC 10 hand-held meters. It functions as a step by step guide to help you operate the meter and as a handy reference guide. It is written to cover as many anticipated applications of the Waterproof PC 10 meters as possible. If there are doubts in the use of this meter, please do not hesitate to contact the nearest Authorised Distributor. [. . . ] Immerse the probe in tap water for 10 minutes before calibrating or taking readings to hydrate the pH electrode surface and minimise drift. Alternatively, pH 4. 0 or 7. 0 calibration standards can be used for short term storage. Contaminants in the solution can affect the calibration, and eventually the accuracy of the measurements. Always remove this protective cap before calibration or measurement Always immerse the electrode beyond this band -7- Instruction Manual PC 10 4. 3. Temperature Calibration The built-in temperature sensor included in the probe is factory calibrated. Calibrate your sensor only if you suspect temperature errors may have occurred over a long period of time or if you have a replacement probe. While in pH calibration mode, press the MODE key to enter temperature calibration mode. The primary display shows the temperature reading with zero offset and the secondary display shows you what the temperature value was initially. Press the or key to set the primary display reading to the correct temperature value. the temperature of the temperature bath) See Figure 12. Figure 9: Adjust temperature value Figure 8: Initial temperature value Figure 7: Enter pH Calibration mode Allow sufficient time for the meter's temperature -8- Instruction Manual PC 10 6. Press the ENTER key to confirm temperature calibration. The CON indicator will flash to confirm calibration. See Figure 13. NOTES To exit from Temperature Calibration mode without confirming calibration, DO NOT press ENTER in step 6. Temperature calibration is restricted to ±5°C from the initial value displayed during calibration (shown in the secondary display). Since temperature readings affect the accuracy of the pH and conductivity measurements, it is strongly recommended to carry out pH and conductivity calibration after a temperature calibration is done. Figure 10: CONFIRM temperature calibration -9- Instruction Manual PC 10 4. 4. pH Calibration This instrument is capable of up to 3-point pH calibration to ensure accuracy across the entire pH range of the meter. You can perform 1, 2, or 3 point calibration with standard pH buffers of 4. 01, 7. 00 and 10. 00. We recommend that you perform at least 2-point calibration using standard buffers that covers the expected sample range. You can also perform a 1-point calibration, but make sure that the buffer value is close to the sample value you are measuring. This meter features three pre-programmed pH buffers (pH 4. 01, 7. 00 and 10. 00). These indicators also flash if the buffer used is not the same as the buffer value on the secondary display. calibration is complete, press Figure 14: Next calibration point Figure 13: CONFIRM calibration point or key to select the next buffer value you want to calibrate (pH 4. 00, 7. 00 CAL/MEAS to return to pH measurement - 11 - Instruction Manual PC 10 4. 5. Conductivity Calibration The Important Information on Conductivity Calibration Your meter has four measuring ranges. You can calibrate one point in each of the measuring ranges (up to four points). If you are measuring values in more than one range, make sure to calibrate each of the ranges you are measuring. You should calibrate each range using a solution that falls between the values in the "recommended calibration solution range" column. Conductivity Range 0. 00 to 19. 99 µS 0. 0 to 199. 9 µS 0 to 1999 µS 0. 00 to 19. 99 mS Recommended Calibration Solution Range 6. 00 to 17. 00 µS 60. 0 to 170. 0 µS 600 to 1700 µS 6. 00 to 17. 00 mS NOTE: Minimum calibration value should be 20% of full scale for the specific range. [. . . ] Faulty hardware * See "Warranty" on page 24 and "Return of Items" on page 25. If an error message appears in the primary display (the upper row of larger digits), switching off the meter and switching it on again may eliminate the error message. If error persists, or the meter shows incorrect values, return the meter. For a complete diagram of the LCD display, see Figure 2 on page 2. Figure 23: Error message on LCD - 19 - Instruction Manual PC 10 1 0 . [. . . ]