User manual EUTECH INSTRUMENTS STANDARD PHSCAN 1 PH TESTER

[. . . ] 2 LCD Annunciators . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 Meter Connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . CALIBRATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 3. 1 3. 2 3. 3 3. 4 pH Calibration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [. . . ] Without temperature compensation, pH accuracy will worsen as samples deviate from 25ºC and pH 7. 1) Press as needed to select pH. 2) Dip the pH and ATC electrodes into pH buffer and press . The secondary display will lock on the appropriate buffer value. When the READY indicator appears, press to accept. The primary reading will flash briefly before the secondary display begins scrolling the remaining available buffers. 3) Rinse the pH and ATC electrodes then dip into the next pH buffer. The secondary display will lock on the appropriate buffer value. The primary reading READY indicator appears, press will flash briefly then display the percent efficiency (slope) before the secondary display begins scrolling the remaining available buffers. 4 4) To calibrate another buffer repeat step 3) or press to return to the measurement mode. Note: The meter will automatically return to measurement mode upon successful completion of the number of specified calibration points. To specify a different number of pH calibration points see Section 5. 6. Additional notes: A single point (offset) calibration is only allowed with pH 7. 00 or pH 6. 86 buffers. 2) Dip the ISE into your lowest standard solution value and stir. Press when the secondary reading is stable. or to match the primary display to your corresponding 3) Press ion calibration value (0. 10, 1. 0, 10, etc). The primary display will show the next highest calibration standard value. 5) Rinse the ISE then dip into the corresponding calibration standard and stir. The mV/decade slope value will be displayed briefly if the calibration is successful. "SLP Err" indicates that the calibration for the current point was not successful. This occurs when the slope (mV difference between two consecutive points) is lower than 15mV/decade or higher than 90mV/decade. 7) Revert to step 3) to calibrate additional points or press as needed to return to measurement mode at any time. Note: The meter will automatically return to measurement mode upon successful completion of the number of specified calibration points. To change the number of ion calibration points see Section 5. 6. 4. [. . . ] c) External `noises' or induction (e. g. electrical `noise' caused by a nearby motor). Slow response Meter not responding to key press a) Dirty electrode. b) Re-insert AC Adapter & press . a) Fill electrode with reference electrolyte. b) Replace electrode. [. . . ]