User manual HANNA INSTRUMENTS HI 121

[. . . ] Instruction Manual HI 121 & HI 123 pH/mV/ISE/Temperature Bench Meters with Calibration Check ON OFF HI 123 pH / mV / ISE Meter CAL CFM CHANNEL LOG Calibration Check 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. [. . . ] CFM 23 · The calibrated value will be displayed on the primary LCD and the second expected standard solution on the secondary LCD. Note: The instrument will automatically skip the standard used for the first point. · After the first calibration point is confirmed, immerse the ISE electrode approximately 4 cm (1½") into the second standard solution. · If necessary, press the ARROW keys to select a different standard solution. · The " " tag will blink on the LCD until the reading is stable. · When the reading is stable and close to the selected standard, the "CFM" tag blinks. · Press CFM to confirm calibration. · The instrument stores the calibration value and CFM returns to normal measurement mode. Note: · If the mV value is out of mV range (±2000), "WRONG" "BUFFER" tags will blink. In this case check if the correct standard has been used, or refresh the electrode by following the maintenance procedure (see page 51). If necessary, change the standard or the electrode. · Slope window is between ±20 mV and ±105 mV if ion charge is not specified (undF selected in SETUP menu) or between 50% and 120% of default slope for the corresponding ion charge. Default slope value (mV/decade): ­59. 16 (monovalent anion) - ion charge is ­1 59. 16 (monovalent cation) - ion charge is 1 ­29. 58 (divalent anion) - ion charge is ­2 29. 58 (divalent cation) - ion charge is 2 100 - ion charge is "undF" · Press CLR or 2nd then CLR key during calibration if you want to clear calibration parameters and set to default. The instrument will display "CLR" message and will return to measurement mode. · Press MODE to display the temperature reading on the LCD during calibration. ONE-POINT CALIBRATION · Press CAL after the first calibration point was confirmed. The instrument memorizes the one-point calibration parameters and returns to measurement mode. 24 CAL GOOD LABORATORY PRACTICE (GLP) GLP is a set of functions that allows storage and retrival of data regarding the maintenance and status of the electrode. All data regarding pH, Rel mV and ISE calibration is stored for the user to review when necessary. CALIBRATION ALARM TIME OUT For pH calibration, all the instruments allow the user to set the number of days before the next required pH calibration. The instrument checks if the time-out has expired. If the time elapsed, "CAL DUE" tags will blink as a reminder. Note: If the instrument was not calibrated or all calibration parameters were cleared, "CAL" "DUE" tags will be displayed even if the feature is disabled in SETUP menu. [. . . ] OTHER ACCESSORIES HI 710005 Voltage adapter from 115 VAC to 12 VDC (USA plug) HI 710006 Voltage adapter from 230 VAC to 12 VDC (European plug) HI 710012 Voltage adapter from 240 VAC to 12 VDC (UK plug) HI 710013 Voltage adapter from 230 VAC to 12 VDC (South African plug) HI 710014 Voltage adapter from 230 VAC to 12 VDC (Australian plug) HI 8427 pH and ORP electrode simulator with 1 m (3. 3') coaxial cable ending in female BNC connectors HI 931001 pH and ORP electrode simulator with LCD and 1 m (3. 3') coaxial cable ending in female BNC connectors HI 7662-T Temperature probe with 1 m (3. 3') cable HI 710032 Pack of 10 plain paper spare rolls (HI 123) HI 710033 Replacement ink cartridge (HI 123) HI 740157 Plastic electrode refilling pipet (20 pcs) HI 92000 Windows® compatible software HI 920010 9 to 9-pin RS232 cable 58 RECOMMENDATIONS FOR USERS Before using these products, make sure they are entirely suitable for the environment in which they are used. Operation of these instruments in residential areas could cause unacceptable interferences to radio and TV equipment, requiring the operator to follow all necessary steps to correct interferences. The glass bulb at the end of the pH electrode is sensitive to electrostatic discharges. Avoid touching this glass bulb at all times. [. . . ]