User manual HANNA INSTRUMENTS HI 933700

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Manual abstract: user guide HANNA INSTRUMENTS HI 933700

Detailed instructions for use are in the User's Guide.

[. . . ] The probes are warranted for a period of one year. This warranty is limited to repair or replacement free of charge. Damages due to accident, misuse, tampering or lack of prescribed maintenance are not covered. If service is required, contact the dealer from whom you purchased the instrument. [. . . ] 95 mm (3. 74") is the minimum amount of space required to install the controller with the cables connected. SPECIFICATIONS HI933700 Range 0 to 2000 µS/cm (HI 933700/1, HI933700/2); 0 to 4000 µS/cm (HI 933700/3, HI933700/4). Accuracy (@ 20°C/68°F) Setpoint Setpoint Hysteresis Alarm ±5% f. s. Red LED lit if EC value exceeds SP (/1, /3) Red LED lit if EC value is lower than SP (/2, /4) Manual with one trimmer HI 7682 EC probe (included) HANNA Power Adapter (included) 79 x 49 x 95 mm (3. 11 x 1. 93 x 3. 74") 150 g (5. 3 oz. ) II 1A max resistive load; 0. 75 A max. inductive load; 250 VAC CALIBRATION For the greatest accuracy, frequent calibration of the instrument is recommended. · Turn the meter on and connect the probe. · Pour a small quantity of HI 7031 EC calibration solution (for HI 933700/ 1 and /2) or HI 7032 calibration solution (for HI933700/3 and /4) in a beaker. If possible, use plastic beakers to minimize any EMC interference. · Immerse the EC probe in the solution, making sure that metal pins are completely submerged. Note: the probe tip should be completely submerged in the solution. Moreover, 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 beaker. The tip can lay on the bottom of the beaker. · Wait for a couple of minutes for thermal equilibrium. · Tap the probe gently on the bottom, then shake it while rotating to make sure no air bubbles have remained trapped. · Adjust the calibration trimmer with a small screwdriver until the output relay switches. · Rotate the calibration trimmer in the opposite direction until the relay switches again. · Adjust the calibration trimmer in the middle of the two relay switching points. · 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. OPERATIONAL GUIDE · Select your own set point via the front panel setting knob. [. . . ] The metal band at the end of the probe is sensitive to electrostatic discharges. 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. [. . . ]

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