User manual HANNA INSTRUMENTS HI 983304

[. . . ] If you need additional technical information, do not hesitate to e-mail us at tech@hannainst. com. These instruments are in compliance with the directives. FUNCTIONAL DESCRIPTION On-line, Waterproof EC-TDS meters with Alarm PRELIMINARY EXAMINATION Remove the instrument from the packing material and examine it carefully. If any damage has occurred during shipment, immediately notify your Dealer or the nearest Hanna Customer Service Center. The meters are supplied with: · Conductivity probe (fixed): HI 7631/2 for HI 983304 HI 7632/2 for HI 983307 and HI 983308 HI 7634/2 for HI 983303 and HI 983306 · Calibration screwdriver · 12 Vdc power adapter and instructions Note: Conserve all packing material until the instrument has been observed to function correctly. [. . . ] The probe is easy to clean and requires little maintenance. You can even select your own setpoint and be alerted of an abnormal situation with a flashing LED alarm. Measurements are highly accurate and the meters can be calibrated at one point. You no longer need to worry about battery changes either: the unit runs without interruption on 12 VDC power supply. Range Resolution Setpoint Hysteresis Alarm Probe Range Resolution Setpoint Hysteresis Alarm Probe SPECIFICATIONS HI 983303 0 to 1990 µS/cm 10 µS/cm 200 to 1600 µS/cm +100 µS/cm over setpoint LED blinks when the EC value is 100 µS/cm higher than setpoint HI 7634/2 (fixed) HI 983304 0. 00 to 19. 99 µS/cm 0. 01 µS/cm 1. 00 to 5. 00 µS/cm +1. 00 µS/cm over setpoint LED blinks when the EC value is 1. 00 µS/cm higher than setpoint HI 7631/2 (fixed) All rights are reserved. Reproduction in whole or in part is prohibited without the written consent of the copyright owner. Hanna Instruments reserves the right to modify the design, construction and appearance of its products without advance notice. HI 983306 0 to 1990 ppm 0 ppm 0. 5 200 to 1600 ppm ±100 ppm around setpoint LED blinks when the TDS value is outside hysteresis range Probe HI 7634/2 (fixed) HI 983307 Range 0. 00 to 9. 99 mS/cm Resolution 0. 01 mS/cm Setpoint 0. 70 to 3. 50 mS/cm Hysteresis ±0. 20 mS/cm around setpoint Alarm LED blinks when the EC value is outside hysteresis range Probe HI7632/2 (fixed) HI 983308 Range 0. 00 to 9. 99 ppt Resolution 0. 01 ppt TDS Facto 0. 5 Setpoint 0. 70 to 3. 50 ppt Hysteresis ±0. 20 around setpoint Alarm LED blinks when the EC value is outside hysteresis range Probe HI 7632/2 (fixed) COMMON SPECIFICATIONS Accuracy (@ 25°C/77°F) ±2% f. s. Temperature Automatic, 5 to 50°C (41 to 122°F) Compensation with ß=2. 4% (HI 983304) or ß=2% (HI 983303/6/7/8) Calibration Manual with one trimmer Casing IP54 Power Supply 12 Vdc adapter (included) Dimensions 86 x 110 x 43 mm (3. 4 x 4. 3 x 1. 7'') Weight 215 g (7. 6 oz. ) Range Resolution TDS Factor Setpoint Hysteresis Alarm OPERATIONAL GUIDE TAKING MEASUREMENTS · Turn the meter on by connecting the 12 Vdc power adapter to the meter and to the mains. · Immerse the probe in the solution, making sure that the metal pins are completely submerged. · The LCD will show the EC or TDS value. Any initial variation may be due to temperature compensation and the fact that the probe is adjusting itself to the new sample. Allow the reading to stabilize and the meter will start continuous monitoring. · Whenever the reading varies from the setpoint more than the hysteresis specified for your model, the red alarm LED will blink. · With the supplied screwdriver, adjust the calibration trimmer until the display shows the calibration solution value: 1410 µS (HI 983303), 1380 ppm (HI 983306), 5. 00 mS (HI 983307) or 6. 44 ppt (HI 983308). · The calibration is now complete and the instrument is ready for use. The instrument should be recalibrated at least once a month and after performing probe cleaning procedure. Note: HI 983304 is supposed to be used for pure water applications and, therefore, does not need calibration. CE DECLARATION OF CONFORMITY 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. · If a more thorough cleaning is required, brush the metal pins with very fine sandpaper. · After cleaning or when not in use, rinse the probe with tap water. Note: HI 983304 is supposed to be used for pure water applications and, therefore, probe cleaning is not required. ACCESSORIES HI 7631/2* Flow-thru conductivity probe with ½" NPT thread, ATC & 2 m (6. 6') cable (HI 983304) HI 7632/2* Flow-thru conductivity probe with ½" NPT thread, ATC & 2 m (6. 6') cable (HI 983307/8) HI 7634/2* Flow-thru conductivity probe with ½" NPT thread, ATC & 2 m (6. 6') cable (HI 983303/6) ADJUSTING THE SETPOINT These meters allow you to select the desired setpoint value and be alerted by a visual alarm (red LED) when an abnormal situation arises. · To access the MEASURE/SET switch, unscrew and remove the rear panel and gasket. [. . . ] Avoid touching this metal band at all times. During operation, ESD wrist straps should be worn to avoid possible damage to the probe by electrostatic discharges. Any variation introduced by the user to the supplied equipment may degrade the instrument's EMC performance. To avoid electrical shock, do not use these instruments when voltages at the measurement surface exceed 24 Vac or 60 Vdc. [. . . ]