User manual HANNA INSTRUMENTS HI 983301

[. . . ] These instruments are in compliance with the directives. FUNCTIONAL DESCRIPTION EC Range Resolution SPECIFICATIONS ­ HI 983302N 0. 00 to 9. 99 mS/cm (EC) 0. 01 mS/cm (EC) ±2% f. s. Automatic 5 to 50°C (41 to 122°F) Manual with one trimmer HI 7632 EC probe (included) IP54 External 12 VDC (included) 86 x 94 x 33 mm (3. 4 x 3. 7 x 1. 3") 150 g (5. 3 oz) ­ HI 983301N and HI 983301N/5 0 to 1990 mg/L (ppm) 10 mg/L (ppm) ±2% f. s. HI 983301N 0. 7 HI 983301N/5 0. 5 Automatic 5 to 50°C (41 to 122°F) Manual with one trimmer HI 7634 TDS probe (included) IP54 External 12 VDC (included) 86 x 94 x 33 mm (3. 4 x 3. 7 x 1. 3") 150 g (5. 3 oz) PRELIMINARY EXAMINATION Remove the instrument from the packing material and examine it carefully. [. . . ] To validate your warranty, fill out and return the enclosed warranty card within 14 days from the date of purchase. Reproduction in whole or in part is prohibited without the written consent of the copyright owner, Hanna Instruments Inc. , Woonsocket, Rhode Island, 02895 , USA. Hanna Instruments reserves the right to modify the design, construction and appearance of its products without advance notice. GENERAL DESCRIPTION EC and TDS are instruments specially designed to meet the needs of growers in greenhouses hydroponic applications. They are equipped with a large Liquid Crystal Display for an easy reading also from distance. You can simply hang the meter right above the sample to be tested for continuous measurement and the unit will run without interruption on 12 VDC power supply. The meters are supplied with a probe that automatically compensates for the temperature variation. Measurements are highly accurate and the meters can be calibrated at one point. In addition, the two TDS use a specially devised formula which perfectly reflects the needs of growers. In fact, the common method of measuring Total Dissolved Solids by multiplying the conductivity by a converting value is far off the mark in horticulture with high concentrations of phosphate, nitrogen, etc. In the HI 983301N model the TDS factor is 0. 7 while in the HI 983301N/5 is 0. 5. OPERATIONAL GUIDE TAKING MEASUREMENTS · Turn the meter on by connecting the 12 VDC power adapter to the meter and to the mains. · Immerse the tip (4 cm - 1½") of the EC or TDS probe in the sample. Note: in order not to affect the accuracy of measurements, it is important that the probe body does not touch nor stand close to the side walls of the vessel. Any initial variation of reading may be due to temperature compensation and to the fact that the probe is adjusting itself to the new sample. Allow the reading to stabilize and the meter will start continuous monitoring. CALIBRATION For the greatest accuracy, frequent calibration of the instrument is recommended. · Pour a small quantity of the indicated calibration solution in a beaker: 1413 µS/cm for HI 983302N, 1500 ppm for HI 983301N or 1382 ppm for HI 983301N/5. · Immerse the EC or TDS probe in the solution, making sure that metal pins are completely submerged. [. . . ] To avoid electrical shock, do not use these instruments when voltages at the measurement surface exceed 24 VAC or 60 VDC. To avoid damages or burns, do not perform any measurement in microwave ovens. CE DECLARATION OF CONFORMITY ACCESSORIES HI 7632 * EC probe with Automatic Temperature Compensation and 2m (6. 6'') cable HI 7634 * TDS probe with Automatic Temperature Compensation and 2m (6. 6'') cable HI 70031P 1413 µS/cm (EC) calibration solution, 20 mL sachet (25 pcs) HI 70442P 1500 ppm (TDS) calibration solution, 20 mL sachet (25 pcs) HI 70032P 1382 ppm (TDS) calibration solution, 20 mL sachet (25 pcs) HI 7031L 1413 µS/cm (EC) calibration solution, 460 mL bottle HI 70442L 1500 ppm (TDS) calibration solution, 460 mL bottle HI 7032L 1382 ppm (TDS) calibration solution, 460 mL bottle HI 7061L Electrode cleaning solution, 460 mL bottle HI 710005 12 VDC power adapter, US plug HI 710006 12 VDC power adapter, European plug HI 710012 12 VDC power adapter, Australian plug HI 710013 12 VDC power adapter, Southern Africa plug HI 710014 12 VDC power adapter, UK plug * To be replaced only by authorized service technicians PROBE MAINTENANCE To minimize clogging and provide longer life for the probe, it is recommended to clean it often or at least once a month. · Immerse the tip of the probe in HI 7061 cleaning solution for one hour or clean it with detergents used to wash irrigation pipelines and fertilizer vessels. [. . . ]