User manual EUTECH INSTRUMENTS EC TESTR REV 0

[. . . ] Twist off and open the battery compar tment lid (the cap with the lanyard loop). You will see two switches ­ the INC (increment) and DEC (decrement) keys. Rinse the electrode in de-ionized water and then rinse with the calibration INC Key standard. Dip the electrode to the calibration standard intended for calibration and swirl gently to create a homogenous sample. [. . . ] This manual provides a step-by-step guide to operate the testers. Figure 4: Example of a temperature mode selection INC INC After 5 sec, "CO" is displayed signifying automatic confirmation TDS Factor Setting (Only for TDS Models) The TDS models features includes the setting of the TDS factor. The upper display will be the adjustable TDS factor whereas the lower display will be the last TDS Factor setting. Use the INC or DEC key to set the correct TDS factor for your sample measurement. Wait for 5 seconds for the tester to automatically confirm the new setting by displaying "CO" and return to the measurement mode. Before you begin: Remove the electrode's protective cap. Soak the electrode for a few minutes in alcohol to remove any oil stains on the electrodes which will affect the accuracy of the tester. Rinse thoroughly with deionized water and shake off dry. DEC DEC Figure 1: Example of a calibration sequence using 2764 µS calibration standard Calibration The tester is factory calibrated. However, to ensure accuracy, you can calibrate the tester on a regular basis. Depending on the model selected, you can calibrate the Conductivity / TDS / Salt / Temperature on a one point calibration using the appropriate calibration standard. The following table lists each model allowable calibration range when selecting a calibration standard. It is best to select a standard close to the test solution value. Model Calibration Standard Range Te E C Te s t r l o w 200 to 1990 uS/cm Te E C Te s t r l o w + 200 to 1999 uS/cm Te E C Te s t r h i g h 2. 00 to 19. 90 mS/cm Te E C Te s t r h i g h + 2. 00 to 19. 99 mS/cm Te E C Te s t r p u r e + 20. 0 to 199. 9 uS/cm Measurement 1. Dip the electrode into the test solution making sure that it is fully immersed. Stir to clear any trapped air bubbles from the electrode and let the reading stabilize. For plus models, you can opt for the cup style measurement by filling the electrode cup with sample of test solution. If you do not press a button for 8. 5 minutes, the tester will automatically shut off to conserve batteries. INC INC DEC DEC After 5 sec, "CO" is displayed signifying automatic confirmation Figure 5: Example of setting the TDS Factor ON/OFF Electrode Maintenance Figure 2: Example of a Power Up Sequence Model Calibration Standard Range TDSTestr low TDSTestr low+ TDSTestrhigh TDSTestrhigh+ TDSTestr pure+ LT TDSTestr lo w TDSTestr lo w+ TDSTestrhigh TDSTestrhigh+ TDSTestr pur e+ S A L T e s t r 200 to 1990 ppm 200 to 1999 ppm 1. 00 to 10. 00 ppt 1. 00 to 10. 00 ppt 20. 0 to 199. 9 ppm 1. 00 to 10. 00 ppt Table 1 1. Rinse the electrodes with de-ionized water and wipe them dry with clean cloth before storing with its protective cap. For the plus models, remove the white plastic cup insert to thoroughly clean viscous solutions. For better performance, soak the electrode in alcohol for 10 to 15 minutes and rinse with de-ionized water before starting any measurement process. This is to remove dirt and oil stains on the electrode which may affect the accuracy of the measurements. Temperature Calibration (Only for PLUS Models) Temperature calibration need not be performed every time, unless the temperature reading differs from that of an accurate thermometer. [. . . ] Note: The tester will exit calibration mode with "Er. 0" message if the temperature is outside the 0 to 50°C range. Please refer to information under 'Self Diagnostic Messages'. Notes: The temperature calibration window is +/- 5°C (+/- 9°F) from the default temperature reading. Over range / Under range signal ATC / Or / Ur (Blinking) Error Message E r. 1 TDSTestr Specifications Large Screen TDS Tester Range Resolution Accuracy TDS Factor Calibration point Calibration Standard Range Temperature Range in °C Range in °F Resolution Accuracy Calibration point Calibration Window ATC Temp Coefficient Normalization Temp Operating Temp Power Battery Battery Life LCD Display Dimensions Weight TDSTestrlow 0 to 1990 ppm 10 ppm TDSTestrlow+ 0 to 1999 ppm 1 ppm TDSTestrhigh TDSTestrhigh+ TDSTestrpure+ 0 to 10. 00 ppt 0 to 10. 00 ppt 0 to 199. 9 ppm 0. 10 ppt 0. 01 ppt 0. 1ppm +/- 1% FS 0. 4 to 1. 0 1 point (± 50% window from factory default) 200 to 1999 1. 00 to 10. 00 ppt 20. 0 to 199. 9 ppm ppm Yes NA Yes 0. 0 to 50. 0 °C 0. 0 to 50. 0 °C 32. 0 to 122 °F 32. 0 to 122 °F 0. 1 °C (0. 1°F) 0. 1 °C (0. 1°F) ±0. 5 °C (±0. 9 °F) ±0. 5 °C (±0. 9 °F) 1 point 1 point ± 5°C (± 9°F) ± 5°C (± 9°F) from factory default from factory default 0 to 50°C 2% per °C 25. 0°C 0 to 50°C 4 X 1. 5V"A76" micro alkaline battery >150 hrs Custom Dual Display27mm(H)X21mm(W) Tester: 16. 5 cm X 3. 8 cm; 90g Boxed: 22cm X 6cmX 5cm; 170 g Applications INC INC After 5 sec, "CO" is displayed signifying automatic confirmation 200 to 1990 ppm NA Water quality testing · pools · aquaculture · hydroponics · ecology studies · water and wastewater treatment · boilers · labs and more! DEC DEC Figure 6: Example of a temperature calibration sequence Accessories Item INC Key + Eutech Instruments Order Code Oakton Instruments Order Code ECTDSWPSENNEW ECTDSWPSENPLUS OKTDSWPSENNEW OKTDSWPSENPLUS Changing Batteries 1. [. . . ]