User manual HANNA INSTRUMENTS HI 8510

[. . . ] Instruction Manual HI 8510 - HI 8512 HI 8710 - HI 8711 HI 8720 - HI 931500 HI 931501 - HI 932500 Panel - Mounted ORP - pH Indicators and Controllers ORP HI 8720E mV DOSAGE OXID. REDUC. SLOPE AL MEA SURE SET COARSE SET FINE AL 0 mV TEST 500 mV TEST These Instruments are in Compliance with the CE Directives http://www. hannainst. com 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 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. [. . . ] When oxidants are dosed, the OXID LED will be lighted, and when reductants are being dosed, the REDUC LED will be lighted (HI 8720, HI 932500 only). DOSAGE SLOPE ACID BASE AL MEA SURE SET COARSE SET FINE DOSAGE OXID. REDUC. SLOPE AL MEA SURE SET COARSE SET FINE 41 pH CALIBRATION Make sure you are in the measurement mode (MEASURE LED light is on) and not in the set mode before proceeding the calibration (not for HI 8510). Note the temperature of the buffer with a ChecktempC or a glass thermometer. MEA SURE COARSE SET FINE °C Remove the protective cap from the electrode, rinse it with some pH 7. 01 solution (HI 7007), then dip in pH 7. 01 buffer. Note: the electrode should be submerged approximately 4 cm (1½") into the solution. The thermometer should be located as close to the pH electrode as possible. HI 7007 Shake briefly and wait one minute before adjusting the O trimmer to display pH 7. 01 on the LCD if the temperature of the buffer solution is at 25°C (77°F). DOSAGE SLOPE O 4 cm (1½") ACID BASE MEA SURE SET COARSE pH SET FINE If the temperature of the buffer solution is not 25°C (77°F), refer to the chart on page 43 for the appropriate buffer value to adjust to the noted temperature. °C Rinse the electrode and temperature sensor thoroughly in water and immerse them in pH4. 01 (HI 7004) or pH 10. 01 (HI 7010) buffer solution. 42 4 cm (1½") HI 7004 Note: to get accurate readings, use pH 4. 01 if you are going to measure acid samples or pH 10. 01 for alkaline measurements. Shake briefly and wait one minute before adjusting the slope trimmer to display pH 4. 01 (or 10. 01) on the LCD if the temperature of the buffer solution is at 25°C, if not refer to the chart on page 43 for appropriate buffer value for the corresponding temperature. DOSAGE SLOPE O ACID BASE MEA SURE SET COARSE pH SET FINE The calibration is now complete and the instrument is ready for use. Note: If the meter is used in conjunction with a PT 100 temperature sensor, immerse it into the buffers during the calibration procedure. 43 pH VALUES AT VARIOUS TEMPERATURE Temperature has an effect on pH. The calibration buffer solutions are effected by temperature changes to a lesser degree than normal solutions. Please refer to the following chart to perform the pH calibration: TEMP °C °F 0 5 10 15 20 25 30 35 40 45 50 55 60 65 70 32 41 50 59 68 77 86 95 104 113 122 131 140 149 158 4. 01 4. 01 4. 00 4. 00 4. 00 4. 00 4. 01 4. 02 4. 03 4. 04 4. 05 4. 06 4. 07 4. 09 4. 11 4. 12 6. 86 6. 98 6. 95 6. 92 6. 90 6. 88 6. 86 6. 85 6. 84 6. 84 6. 83 6. 83 6. 84 6. 84 6. 85 6. 85 pH VALUES 7. 01 9. 18 7. 13 7. 10 7. 07 7. 04 7. 03 7. 01 7. 00 6. 99 6. 98 6. 98 6. 98 6. 98 6. 98 6. 99 6. 99 9. 46 9. 39 9. 33 9. 27 9. 22 9. 18 9. 14 9. 10 9. 07 9. 04 9. 01 8. 99 8. 97 8. 95 8. 93 10. 01 10. 32 10. 24 10. 18 10. 12 10. 06 10. 01 9. 96 9. 92 9. 88 9. 85 9. 82 9. 79 9. 77 9. 76 9. 75 For instance, if the buffer's temperature is 25°C (77°F), calibrate to read 4. 01 or 7. 01 or 10. 01 on the display. If the buffer's temperature is 20°C, calibrate to read 4. 00/7. 03/10. 06 on the display. If the buffer's temperature is 50°C, calibrate to read 4. 06/6. 98/9. 82 on the display. 44 pH DIAGNOSTIC TESTS The HI 8510, HI 8710 and HI 8711 are the only pH controllers with built-in autodiagnostic functions to enable the user to check and troubleshoot any malfunctions. The functions are made via front panel keys to isolate the cause of malfunction whether it is due to pH electrode contamination, internal offset circuit or the amplifier circuit. Follow the procedure describe below if you detect any malfunctioning of the instrument or electrode. Press the "MEASURE" button before pressing any of the following keys. MEA SURE COARSE SET FINE A) Sensor Test Immerse the electrode in pH 7. 01 buffer solution (HI 7007), press the "SENSOR TEST" key and the display shows the mV response of the electrode. 4 cm (1½") HI 7007 SENSOR TEST mV If the electrode is in good working condition, the value should be within ±30 mV. A value between 30 mV and 60 mV or between -60 and -30 mV indicates some contamination of the electrode. If the value is higher than 60 mV or lower than -60 mV the contamination is too high and the electrode should be replaced. 45 B) Internal Offset Circuit Test Press the "pH7 TEST" key and the display should show a value between 7 pH ±1 pH. This will verify the internal circuit of the meter in terms of the offset compensation. pH 7 TEST pH C) Amplifier Circuit Test Press the "pH4 TEST" key and the display should show a value between 3. 30 pH and 4. 30 pH. This will verify the amplifier circuit of the meter. pH 4 TEST pH 46 ORP DIAGNOSTIC TESTS The HI 8512 and HI 8720 are the only ORP controllers with built-in autodiagnostic functions to enable the user to check and troubleshoot any malfunctions. The functions are made via front panel keys to isolate the cause of malfunction. Press the "MEASURE" key before proceeding with the following tests (HI 8720 only). MEA SURE COARSE SET FINE A) 0 mV Test Press the "0 mV TEST" key and the display should show a value of 0 mV ±10 mV. This will verify instrument calibration at point 0. mV 0 mV TEST 500 mV TEST B) 500 mV Test Press the "500 mV TEST" key and the display should show a value of 500 mV ±20 mV. This will verify the slope at point 500 mV. mV 0 mV TEST 500 mV TEST 47 LED INDICATION The LEDs above all keys are designed to indicate the state of each function, whether it is active or the display is indicating the mode. [. . . ] Since the introduction of AmpHel® these distances are no longer a problem. You are now able to connect your meter directly to an AmpHel® electrode, saving the cost of a transmitter or costly coaxial cable. The standard cable length of the AmpHel® electrode is 5 m (16. 5'). Additional lengths of regular cable up to 50 m (165'), can be 57 installed without special connectors. MAXIMUM 50 METERS WET ENVIRONMENT RELATIVE HUMIDITY UP TO 100% pH-ORP METER pH METER WITH AN AmpHel ® ELECTRODE MEASUREMENTS CAN BE TAKEN FROM DISTANCES UP TO 50 METERS (165 FEET) AmpHel® electrodes have a micro-amplifier in the electrode cap to boost the signal, drastically reducing susceptibility to noise and drift. [. . . ]