User manual EUTECH INSTRUMENTS STANDARD TDSCAN 1 TDS TESTER

[. . . ] Setup pH & mV. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10 Sample ID . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10 Buffer (Group Selection). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10 Cal Points. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11 Resolution. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11 Alarm . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11 Cal Due . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11 5. 10. pH Calibration (with preset buffer group) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12 pH Calibration (with custom buffers) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14 Millivolt (mV) Calibration (Offset Adjustment). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16 Temperature Setup . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17 Temperature Calibration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18 Conductivity, TDS, Salinity, & Resistivity Setup . . . . . . . . . . . . . . . . . . . . . . . . . . 19 Sample ID . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19 Cal Points. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20 Pure Water Coefficient. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20 Temperature Coefficient (linear) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20 Normalization Temperature (°C) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21 Cell Constant . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21 Alarm . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22 Cal Due . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22 11. Conductivity Calibration (automatic). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23 12. Conductivity, TDS, Salinity, & Resistivity Calibration (manual adjustment) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25 13. [. . . ] 1) Turn meter on, press MODE if needed for conductivity measurement mode. Rinse the electrode with clean water then submerse into your conductivity standard-- either 84 µS, 1413 µS, 12. 88 mS, or 111. 8 mS. 3) Use the up/down arrows to adjust the cell constant manually or press NEXT to keep the nominal cell constant value and proceed with a typical automatic calibration (recommended). If adjusting the cell constant manually, press ENTER after `Stable' appears to confirm the adjustment. Before and after a manual calibration constant adjustment 4) Wait for the meter to lock on the calibration standard and press ENTER after `Stable' appears to confirm the calibration point. The calibrated value, Range (R) that was calibrated and the calculated cell constant are now shown. Before and after a one-point automatic conductivity calibration with 1. 413 mS 23 5) For multi-point calibration repeat steps 2 & 3 with additional standards. Press ESC to save the calibration, or press NEXT to view the calibration report. Additional automatic conductivity calibration notes: A maximum of one calibration point per range can be performed. If multiple calibration points are used in the same range, the most recent one will replace the previous one. When the electrode is replaced, it is best to clear the calibration to the factory default values. Rinse or immerse the probe before calibration and between samples with clean water (deionized water is ideal). To protect from erroneous calibrations, the allowable tolerance is ±40% of the factory default value. Incorporating a sample ID to identify one or more data points is useful to distinguish data that is saved into memory or sent to a PC or printer. Use the up/down arrow keys to adjust the values and left/right arrow keys to move the cursor. Measure Unit Select ppm, molar, or mg/L ion concentration units. Alarm The 2700 offers a visual and audible alarm to alert you when the High or Low values that have been set from this menu are exceeded. "High Alarm" or "Low Alarm" will blink on the display if the values are exceeded while simultaneously, a loud, intermittent beeping sound is heard. The alarms will continue until the conditions are no longer met, and will only be active during measurement mode. 27 Cal Due When enabled, the "Cal Due" indicator blinks if the number of days since the last calibration has been exceeded. Set the number of days from 1 to 31. Refer to your Ion Selective Electrode instruction manual for details on conditioning, storage, maintenance, calibration standard preparation, Ionic Strength Adjustment, troubleshooting, etc. Each ISE is unique and requires care and operation that is specific to the electrode and ion of interest. 28 14. Ion Calibration The ION 2700 can measure ion concentration such as ammonia or fluoride when using an ion selective electrode (ISE) for the specific ion of interest. Ion calibration is required with at least two standards from (8) available values; 0. 001, 0. 01, 0. 1, 1. 0, 10, 100, 1000, and 10000. The primary display will show "- - - -" when ion calibration is required for ion measurement. Prepare ion calibration standards that bracket your measurement range. Follow the ion selective electrode instruction manual for the appropriate ionic strength adjustment and sample preparation. For best results always begin with your lowest calibration standard value, followed by the next lowest, and so on. 1) 2) Connect the ISE and press MODE as needed for concentration mode. Rinse the ISE with clean water then dIp into your lowest calibration standard and stir. [. . . ] . 44 23. pH Troubleshooting Cause Won't accept 1st calibration point Cal points are too close Reading is 7. 00 and won't change Slope error Calibration error / Parameter Solution New calibrations must begin neutral standard (7. 00 or 6. 86) with pH Custom pH buffer calibration values must be at least 1. 0 pH unit apart. or pH pH or Ion Calibration values are too far apart, or too far from ideal values. Electrode may require filling solution, conditioning, or complete replacement. 2-point Ion calibration is required; no calibration is stored in memory. [. . . ]