User manual HANNA INSTRUMENTS HI 255

[. . . ] Instruction Manual Multiparameter pH/mV/ºC EC/TDS/NaCl Bench Meter HI 255 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 instrument. This manual will provide you with the necessary information for correct use of the instrument, as well as a precise idea of its versatility. [. . . ] The instrument will display: The time. Press the ARROW key to view the next logged calibration parameters (pressing the key). The date. CAL DATE The EC calibration buffer. The cell constant. The calibration offset factor. 22 The reference temperature. The temperature coefficient. The temperature compensation mode. The instrument ID. LAST NaCl CALIBRATION DATA Last NaCl calibration data is stored automatically after a successful calibration. To view the NaCl calibration data, press GLP when the instrument is in NaCl measurement mode. The instrument will display: The time. Press the ARROW key to view the next logged calibration parameters (pressing the key). The date. CAL DATE The salinity coefficient. 23 The cell constant. The reference temperature. The temperature compensation mode. The instrument ID. Note: If notc is selected as temperature compensation mode during calibration, the temperature coefficient is not displayed in GLP. Press GLP at any moment and the instrument will return to measurement mode. If calibration has not been performed on the selected range, the instrument displays no CAL message blinking. CAL 24 Up to 200 LOG samples can be stored into memory. LOGGING THE CURRENT DATA LOGGING FUNCTION To store the current reading into memory press LOG while the instrument is in measurement mode. The instrument will display the current date (mm. dd) on the primary LCD, the record number on the secondary LCD and LOG tag will blink for a few seconds (see example below: record No. 5 dated September 14): LOG If there are less than 6 memory locations remaining, the record number and Lo message will blink to alert the user. LOG If the log space is full, FULL LOC message will be displayed and no more data will be saved. LOG When LOG is pressed, a complete set of information of the corresponding measurement range is stored. VIEW LOGGED DATA Press the ALT&RCLkeys while in measurement mode to retrieve the stored information. If no data were logged, the instrument displays: LOG If no data were logged for the current selected measurement range, one of the next messages will be displayed: On pH measurements ranges: LOG 25 On Relative mV range: LOG mV On EC range: LOG On TDS range: LOG On NaCl range: LOG Otherwise, the instrument will display the memorized data: If RCL is invoked while the instrument is in pH or mV measurement range: LOG pH Or if RCL is invoked while the instrument is in Rel mV range: Or if RCL is invoked while the instrument is in EC measurement range: Or if RCL is invoked while the instrument is in TDS measurement range: 26 Or if RCL is invoked while the instrument is in NaCl measurement range: Pressing the ARROW keys, the instrument will display the same parameter but for a different record: (example on pH range) LOG pH or LOG pH Note: The instrument will automatically skip log records from other measurement ranges. Press RANGE and the instrument will display the next logged parameter as follows: For pH/mV Range The temperature value on the primary LCD and the record number on the secondary LCD. LOG The mV value on the primary LCD and the record number on the secondary LCD. LOG mV Note: When the pH, mV or temperature is displayed, if the ALT&SET keys are pressed and hold down, the secondary LCD will display the record date. 27 The time on the primary LCD, along with TIME tag. LOG TIME The date on the primary LCD, along with DATE tag. LOG DATE The calibration offset on the primary LCD and OFS message on the secondary LCD. LOG mV The calibration slope on the primary LCD and SLP message on the secondary LCD. LOG % The temperature compensation mode on the primary LCD and tcP message on the secondary LCD. Note: When the time, date, year, offset or slope is displayed, if the ALT&SET keys are pressed and hold down, the secondary LCD will display the record number. The dEL message on the primary LCD and the selected record on the secondary LCD, with LOG tag displayed and CFM tag blinking. LOG CFM Note: If one of the ARROW keys is pressed while dEL and record number is displayed, the next/previous record number is selected. If the ALT&SET keys are pressed, the secondary LCD will display ALL message. LOG CFM 28 Pressing the ALT&SET keys again, the secondary LCD will display the record number. If dEL ALL option was selected, all records (for all ranges) are deleted and the instrument returns to measurement mode. For Relative mV Range The temperature value, the mV absolute value, the time and the date as described above. The Relative mV offset. LOG mV The dEL message as described above. For EC Range The temperature value, time and date as described on pH Range. The offset factor on the primary LCD and OFS message on the secondary LCD. The reference temperature on the primary LCD and rEF message on the secondary LCD. The temperature coefficient on the primary LCD and tc message on the secondary LCD. The temperature compensation mode as described on pH Range. The cell constant on the primary LCD and CEL message on the secondary LCD line. Note: When the EC or temperature is displayed, if the ALT&SET keys are pressed and hold down, the secondary LCD will display the record date. 29 When the information that does not display the record number is selected, pressing and keeping hold down the ALT&SET keys will display the record number on the secondary LCD line. [. . . ] Use: biotechnology, micro titration. HI 1050 12 mm 0. 5" 5 mm 0. 2" 3 mm 0. 12" 3. 0 mm DIA 0. 12" HI 1083 120 mm 4. 7" HI 1131B Glass-body, single junction, refillable, combination pH electrode. Use: general purpose. 9. 5mm DIA 0. 37" 12 mm 0. 5" HI 1131 120 mm 4. 7" "S" VERSION 50 HI 1111 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" HI 1331B Glass-body, semimicro, single junction, refillable, combination pH electrode. Use: flasks. "S" VERSION HI 1310 8 mm 0. 3" 7. 5mm DIA 0. 29" HI 1331 210 mm 8. 25" "S" VERSION HI 1230B Plastic-body (Ultem®), double junction, gel-filled, combination pH electrode. [. . . ]