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Summary of Contents for Hanna Instruments HI 504920
- Page 1 Instruction Manual HI 504920 Remote User Interface pH Meter w w w . h a n n a i n s t . c o m...
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Page 2: Table Of Contents
• Hanna HI 504910 interface cable (HI 7920) • pH 4.01 buffer solution, 20 mL sachet All Hanna Instruments meters are warranted for two years against defects in • pH 7.01 buffer solution, 20 mL sachet workmanship and materials when used for their intended purpose and maintained •... -
Page 3: Functional Description
through a password protection method. FUNCTIONAL DESCRIPTION The Battery Error Preventing System (BEPS) detects when the batter- ies level becomes weak. When the batteries are getting low, a clear indication is displayed on LCD to warn the user of this condition. However, the meter continues to measure correctly even when the low battery indication is dis- played. -
Page 4: Specifications
SPECIFICATIONS INITIAL PREPARATION Range pH -4.00 to 19.99 pH Each meter is supplied complete with batteries and 12 VDC adapter. mV ±600.0 mV ; ±2000 mV autoranging To power the instrument with batteries, remove the back cover, Temp. -20 to 120 °C unwrap the batteries and install them while paying attention to the Resolution pH 0.01 pH... -
Page 5: Calibration
9. If everything is satisfactory the LCD will CALIBRATION display "Stor" and then the expected value for the second buffer (two-point pH CALIBRATION calibration). If a wrong solution or elec- For greatest accuracy, it is recommended to frequently calibrate the trode has been used or if the buffer is instrument. -
Page 6: Temperature Calibration Procedure
mV CALIBRATION USE AS REFERENCE pH METER Contact your nearest Hanna Service Center for periodic mV calibration. It is recommended to have the meter recalibrated for mV reading at HI 504910 QUICK pH CALIBRATION least every two years. HI 504910 can be calibrated frequently through HI 504920 without interrupting the normal measurement. - Page 7 Note: At point 5, if the probe offset is HI 504910 pH READING CHECK outside the allowed limits, if HI The check of the HI 504910 pH reading against the HI 504920 pH 504910 is configured to measure ORP, reading is possible at any time. or if some other error occurs, the LCD Perform the following steps: shows a blinking "bAd"...
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Page 8: Setup Mode
PARAMETER SETTINGS SETUP MODE • Once the parameter code (and password if needed) has been entered, the current value of the selected parameter will be Setup can be used to view data regarding instrument status (e.g. displayed on the primary LCD and the battery charge) or to change the meter parameters (e.g. -
Page 9: Taking Measurements
The meter automatically checks for entered time/date accuracy as follows: TAKING MEASUREMENTS 0 hh 23; 0 mm 59; 01 dd 28/29/30/31; 1 MM 12; 1998 YYYY 2097. To change the password, the correct code must be entered first. If the password has been forgotten, the password protected features are no longer accessible;... -
Page 10: Good Laboratory Practice (Glp)
ORP MEASUREMENTS GOOD LABORATORY PRACTICE (GLP) Connect the ORP electrode to the meter and press the ON/OFF key. GLP is a set of functions that allows the storage or retrieval (when The meter automatically sets the mV range. necessary) of data regarding the maintenance and status of the If the electrode is not connected the LCD will display the "no probe"... -
Page 11: Battery Replacement
• The LCD will then display the last pH calibration date. BATTERY REPLACEMENT • Press DISPLAY to scan remaining data, in the following order: last calibration time; When the batteries are inserted and no power adapter is connected, electrode offset value in mV ("OFF" appears on the secondary LCD); the meter can recognize two different batteries charge levels. -
Page 12: Temperature-Resistance Correlation For Hanna Ph Sensitive Glass
TEMPERATURE-RESISTANCE CORRELATION FOR ELECTRODE CONDITIONING HANNA pH SENSITIVE GLASS AND MAINTENANCE The resistance of glass electrodes partially depends on the temperature. Note: To prevent damage to the electrode, remove the pH electrode The lower the temperature, the higher the resistance. It takes longer time from the sample before turning the meter off. -
Page 13: Accessories
Replace the solution in the protective cap with a few drops of HI • Dry Membrane/Junction: Soak in Storage Solution HI 70300 70300 Storage Solution. Follow the Preparation Procedure above for at least 1 hour. before taking measurements. • Drifting: Soak the electrode tip in warm Hanna Solution HI 7082 for 1 hour, then flush tip with distilled water. -
Page 14: Ce Declaration Of Conformity
Any variation introduced by the user to the supplied equipment may degrade the instrument's EMC performance. Hanna Instruments reserves the right to modify the design, construc- To avoid electrical shock, do not use these instruments when voltages at the measurement surface exceed tion and appearance of its products without advance notice. - Page 15 SALES AND TECHNICAL SERVICE CONTACTS Australia: Tel. (03) 9769.0666 • Fax (03) 9769.0699 China: Tel. (10) 88570068 • Fax (10) 88570060 Egypt: Tel. & Fax (02) 2758.683 Germany: Tel. (07851) 9129-0 • Fax (07851) 9129-99 Greece: Tel. (210) 823.5192 • Fax (210) 884.0210 Indonesia: Tel.
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