User manual HANNA INSTRUMENTS HI 3221

[. . . ] Instruction Manual HI 3220 HI 3221 HI 3222 Calibration Check pH/mV/ISE/Temperature Bench Meters w w w. c o m 1 Dear Customer, Thank you for choosing a Hanna Instruments product. Please read this instruction manual carefully before using the instruments. This manual will provide you with the necessary information for correct use of the instruments, as well as a precise idea of their versatility. [. . . ] · The calibrated value and the fourth expected standard value will be displayed. · After the third calibration point is confirmed, immerse the ISE electrode approximately 2 cm (¾") into the fourth calibration solution. · If necessary, press the ARROW keys to select a different standard value. · The " " tag will blink on the LCD until the reading is stable. · When the reading is stable and close to the selected standard, the Confirm function key is displayed. · The calibrated value and the fifth expected standard value will be displayed. · After the fourth calibration point is confirmed, immerse the ISE electrode approximately 2 cm (¾") into the fifth calibration solution. · If necessary, press the ARROW keys to select a different standard value. · The " " tag will blink on the LCD until the reading is stable. · When the reading is stable and close to the selected standard, the Confirm function key is displayed. The instrument stores the calibration value and returns to normal measurement mode. Note: The instrument will automatically skip the standard solutions used during calibration. 27 ERROR SCREENS Wrong standard The calibration cannot be confirmed. Verify that the correct standard is selected. The message appears if mV input is out of ±2000 mV range. Verify that the correct standard is selected. Slope over accepted value (130 % default slope). Wrong old slope An inconsistency between present and previous (old) calibration is detected. Clear old calibration parameters and proceed calibration from the current point. The instrument will keep all confirmed values during current calibration. The instrument will display "----" on the primary LCD if is not calibrated or after all calibrations are cleared. If "Clear" is pressed during the first calibration point, the instrument returns to measurement mode. Notes: · Press Temp function key to select temperature value to be changed if the temperature probe is not connected; · ISE range is not temperature compensated on this meter; · Standards and samples should be at the same temperature. 28 GOOD LABORATORY PRACTICE (GLP) GLP is a set of functions that allows storage and retrieval of data regarding the maintenance and status of the electrode. All data regarding pH, Rel mV or ISE calibration is stored for the user to review when necessary. EXPIRED CALIBRATION The instrument is provided with a real time clock (RTC), in order to monitor the time elapsed since the last pH calibration. The real time clock is reset every time the instrument is calibrated and the "expired calibration" status is triggered when the instrument detects a calibration time out. [. . . ] Use: general purpose. 9. 5mm DIA 0. 37" 12 mm 0. 5" HI 1131 120 mm 4. 7" "S" VERSION HI 1330B Glass-body, semimicro, single junction, refillable, combination pH electrode. Use: laboratory, vials. 5mm DIA 0. 2" 5mm 0. 2" HI 1330 120 mm 4. 7" "S" VERSION HI 1331B Glass-body, semimicro, single junction, refillable, combination pH electrode. Use: flasks. 8 mm 0. 3" 7. 5mm DIA 0. 29" HI 1331 210 mm 8. 25" "S" VERSION HI 1230B Plastic-body (PEI), double junction, gel-filled, combination pH electrode. Use: general, field. 12 mm 0. 5" HI 1230 120 mm 4. 7" "S" VERSION HI 2031B Glass-body, semimicro, conic, refillable, combination pH electrode. [. . . ]