User manual HANNA INSTRUMENTS HI 9913

[. . . ] Instruction Manual HI 9913 - HI 9923 HI 9935 Wall Mounted Dual Conductivity/TDS & pH Controllers pH OFFS ET SLOP E 0. 5 1. 5 0 2. 0 pH 0 PROP ORTIO SE NAL SETT CONDS 90 INGS ALAR M HI 99 1 pH ACID 5 pH 1 0 ALA FE ALAR 2 M 1 0 ON ACID 4 ALK 2. 5 5 SET mS 2 OFF ALAR M 7. 5 EC mS 1 MINU 10 TE TIMER S SET pH mS FERT ZERO CAL SLOP E CA L 2 ALA FEE SET 3 EC 0. 5 1. 5 0 ON OFF ALAR M 2. 5 1 5 SET 7. 5 2. 0 mS 0 PROP ORTIO NAL SE SETT COND 90 INGS S 1 MINU 10 TE TIMER S LINE http://www. hannainst. com These Instruments are in Compliance with the CE Directives Dear Customer, Thank you for choosing a Hanna Product. Please read this instruction manual carefully before using the instrument. This manual will provide you with the necessary information for a correct use of the instrument, as well as a more precise idea of its versatility. If you need more technical information, do not hesitate to e-mail us at tech@hannainst. com. [. . . ] The probe must be immersed in the solution above the air-vent holes on the external sleeve. The probe must be installed in such a way as to minimize presence of air bubbles (see probe installation tips at the end of the manual). Remove the protective cap if it is still on the tip of the pH electrode and ensure that the electrode is immersed in the solution (at least 4cm/1. 5"). The electrode should be installed in such a away that it permanently lies in the solution whether in a well, tank or on the discharge pipe. The controller provides for visual dosing status through two LED's (see 3 and 11 - Functional DiaFEED FERT FEED ACID gram). The LED's light up when 3 2 6 5 the controller is in the pH and/ or conductivity/TDS dosage 4 7 1 4 mode and the relays are actiSET SET vated. The actual pH and conductivity or TDS values are displayed on the two LCD's in pH and mS/cm or ppm, respectively. pH 5. 80 1. 60 19 EC mS pH CALIBRATION Make sure that the pH electrode and any ground probe have been properly connected and wired to the controller (see preceding pages) and that the meter is plugged to the mains. Calibration should be performed at a temperature similar to that of the liquid to be monitored. Remove the electrode cap if it is still on the electrode. 4 cm (1½") HI 7007 During calibration, move the electrode and the separate ground probe (if in use) together from one buffer to the next. 4 cm (1½") HI 7007 If no separate ground probe is being used, make sure that the Reference and the Matching Pin terminals are shorted (see 18 - Functional Diagram). If the electrode (such as HI 1003/3) incorporates a ground probe (matching pin) then remove the jumper. OFFSET ADJUSTMENT: · Rinse the tip of the electrode with pH 7. 01 solution (HI 7007), then dip the bottom 4 cm (1. 5") of the electrode (and ground probe) in the pH 7. 01 buffer. · Wait for the measurement to stabilize and then adjust the "OFFSET" trimmer (see 7 - Functional Diagram) to display 7. 01 on the LCD if the temperature of the buffer solution is at 25°C (77°F). HI 7007 4 cm (1½") pH OFFSET 7. 01 SLOPE ON ALARM OFF 20 · If the temperature of the buffer solution is not 25°C (77°F), refer to the chart at the end of the manual for the appropriate buffer value at a given temperature and adjust the trimmer accordingly. SLOPE ADJUSTMENT: · Rinse the electrode (and ground probe) thoroughly with water and immerse the bottom 4 cm (1. 5") in a pH 10. 01 (HI 7010) or a pH 4. 01 (HI 7004) buffer solution. · Stir the electrode and wait for the display to stabilize before adjusting the "SLOPE" trimmer (see 6 - Functional Diagram) to display pH 4. 01 (or 10. 01) on the LCD if the temperature of the buffer solution is at 25°C pH (77°F). Otherwise, refer to the chart at the end of the manual for the appropriate buffer value and adjust the trimmer accordingly. The pH calibration is now complete. HI 7004 4 cm (1½") 4. 01 SLOPE ON OFF OFFSET ALARM C OADJUSTEMENTT DOF CSETPOINT O N NDUCTIVITY/ S ALIBRATI Make sure that the probe has been properly connected and wired to the controller (see preceding pages) and that the meter is plugged to the mains. Calibration should be ideally performed at a temperature similar to that of the liquid to be monitored. ZERO ADJUSTMENT: · Leave the probe in the air and make EC mS sure that it is dry. If necessary adjust the "ZERO CAL" trimmer to display zero (see 12 - Functional Diagram) 0 SLOPE CAL ON ZERO CAL ALARM SLOPE ADJUSTMENT: · Pour sufficient amount of a known conductivity or TDS solution in a beaker. The solution should ideally be close to the sample stream to be monitored. For example, when using the HI 9913, choose HI 7031L with a 1. 41 mS/cm at 25 °C if the measure21 ments are in the 1. 2 to 2. 5 EC range. Similarly, utilize HI 7039L with a value of 5. 00 mS/cm at 25 °C if controlling your process with HI 9923 and HI 70442L with a value of 1500 ppm (mg/L) value if working with HI 9935. · Immerse the probe in the beaker ensuring that the holes on the sleeve of the probe are completely covered. · Stir the probe and tap it gently on the bottom of the beaker to ensure that any air bubbles trapped inside the sleeve escape. Best results are obtained when the probe is not too close to the walls of the beaker nor lying on the bottom. [. . . ] AmpHel electrodes have a micro-amplifier in the electrode cap to boost the signal, drastically reducing susceptibility to noise and drift. For more details about these or other specially made electrodes, consult the Hanna process and water treatment literature, or call the Hanna Office nearest to you. SUGGESTED INSTALLATIONS for EC/TDS PROBE As with any other liquid contact measurement, ensure that the probe is installed in such a way that it permanently lies in the solution whether in the tank or the discharge pipe. HI 3001D FOR IN-LINE INSTALLATION HI 3001D is suitable for this purpose due to its external 1/2" NPT thread, 6 Bar (87 psi) pressure rating and the short immersion depth of 20 mm (0. 8"). t can be installed in 1/2" pipes (with the aid of a "T"). For larger pipe sizes, HI 3001D can be mounted upside down or vertically. 1/2" Thread 31 HI 3002 FOR IN-LINE INSTALLATION The drawing illustrates the ideal installation system since the stream pressure in the pipe forces the air bubbles out automatically. [. . . ]