User manual HANNA INSTRUMENTS HI 98140

[. . . ] Instruction Manual HI 98140 - HI 98150 Portable Waterproof Microprocessor Logging GLP pH / ORP Meters www. hannainst. com These Instruments are in Compliance with the CE Directives Dear Customer, Thank you for choosing a Hanna Instruments Product. Please read this instruction manual carefully before using the instrument. This manual will provide you with all the necessary information for the correct use of the instrument, as well as a precise idea of its versatility in a wide range of applications. These instruments are in compliance with the TABLE OF CONTENTS PRELIMINARY EXAMINATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [. . . ] note: see "GLP" paragraph for more details about "old probe" and "dead probe" messages. mV CALIBRATION PROCEDURE (HI98150 ONLY) A two or three-point calibration can be performed. The first two calibration points are always 0 and +350 mV; the third point is optional at +1900 mV. Connect a mV simulator (HI8427 or HI931001 with the proper connecting cable) to the meter and set it to 0 mV. Enter the password (if different from "0000") with the arrow keys. If password is correct, the meter will display "0 mV" on the lower LCD with the "BUF 1" and "CAL" indication. When the "CFM" symbol blinks, the reading is stable and calibration can be confirmed. The meter will then display "350 mV" on the lower LCD with the "BUF 2" indication. 15 10. If only a two-point calibration is required, press CAL to leave the calibration mode. The meter will display "1900 mV" on the lower LCD with the "BUF 3" indication. Calibration is now complete, the instrument returns to normal operational mode. Note: "WRONG" message notifies the user if the selected value is wrong. TEMPERATURE CALIBRATION PROCEDURE (for technical personnel only) A two point calibration at 0. 0, 50. 0°C has to be performed in order to store the new calibration data in memory. Immerse the pH electrode with the built-in temperature sensor in the 0°C temperature bath. The meter will display "0. 0 °C" on the lower LCD with the "BUF 1" and "CAL" indication. When the reading is stable the "CFM" symbol starts to blink. LCD will then display 50. 0°C on the lower LCD with the "BUF 2" indication. Immerse the pH electrode with the built-in temperature sensor in the 50°C temperature bath. When the reading is stable the "CFM" symbol starts to blink. Press ALT and CFM to confirm and return to normal operational mode. 16 LOGGING FUNCTION To store the current reading in memory press the LOG key while in measurement mode. The LCD will display "Stor" along with the "LOG" indication and the sample number for a few seconds. By pressing the LOG key a complete set of information is memorized: date, time, pH and mV (HI98150 only) readings, temperature reading and also a message on the meter status. When the memory is full and the LOG key is pressed, the sample will not be stored and the LCD will display "FULL". In this case it is necessary to delete all the memory to proceed. TO VIEW LOGGED DATA To retrieve the memorized information press ALT and RCL. The meter displays the date (upper LCD) and the number (lower LCD) of the last logged sample. The "ZERO" indication will be displayed if no samples are stored in memory. [. . . ] combination pH electrode, glass-body, single junction, gel-filled with built-in temperature NTC sensor and EEPROM for GLP data storing. combination pH electrode, glass-body, single junction, triple ceramic, refillable with built-in temperature NTC sensor and EEPROM for GLP data storing. combination pH electrode, single junction, gel-filled with built-in temperature NTC sensor and EEPROM for GLP data storing. combination pH electrode, single junction, with built-in temperature NTC sensor and EEPROM for GLP data storing. [. . . ]