User manual HANNA INSTRUMENTS HI 9828

[. . . ] Instruction Manual HI 9828 Multiparameter w w w. h a n n a i n s t . c o m 1 2 Hanna Instruments reserves the right to modify the design, construction and appearance of its products without advance notice. 3 Dear Customer, Thank you for choosing a Hanna Instruments product. Please read this instruction manual carefully before using the instrument. It will provide you with the necessary information for correct use of the instrument, as well as a precise idea of its versatility. If you need additional technical information, do not hesitate to e-mail us at tech@hannainst. com or see the back cover for our worldwide contact list. [. . . ] Also, a CLEAR softkey will appear on the right. Press CLEAR to clear old parameters and continue calibration process or ESC to leave calibration. 4. 3 DISSOLVED OXYGEN CALIBRATION If D. O. % saturation range is calibrated, D. O. concentration range will be calibrated too, and viceversa. % saturation value is the result of a comparison between the concentration of oxygen in air (100 % ) and in water, so it is suggested to calibrate the probe near the area where the measurements will be taken in order to have the best accuracy. % saturation, temperature, salinity and atmospheric pressure so it is recommended to use a standard solution or a reference D. O. meter to compare readings during calibration. % saturation calibration can be performed at 1 or 2 standard points (0 % and 100 %), or at a single custom point (50 to 500 %). concentration calibration can be performed at a single custom point (4 to 50 mg/L). calibration mode in the main calibration menu, select the type of calibration with the arrow keys and then press OK. % saturation This calibration starts by default with 100 %. · Fill the probe beaker with approximately 4 mm (5/32") distilled water and screw it on the probe. · The message NOT READY appears until the value is stabilized. · To change standard calibration point, press CAL. POINT. 34 · To insert a different calibration value, after pressing CAL. POINT, press also CUSTOM and insert the desired value with the keyboard. · When the reading is stable READY and CONFIRM appear. Press CONFIRM to accept the calibration point. · After the first calibration point is confirmed, put the probe in a D. 0% saturation standard solution and wait until the measure is stable. · Press CONFIRM to accept the calibration point. · At the end of calibration the following messages appear: "Storing data on probe, please wait. . . ", "Updating GLP data, please wait . . . " and "Calibration completed". · Press OK to return to the calibration menu. [. . . ] If the instrument is to be returned to Hanna Instruments, first obtain a Returned Goods Authorization number from the Customer Service department and then send it with shipping costs prepaid. When shipping any instrument, make sure it is properly packaged for complete protection. Recommendations for Users Before using this product, make sure that it is entirely suitable for the environment in which it is used. Operation of this instrument in residential areas could cause unacceptable interferences to radio and TV equipment, requiring the operator to take all necessary steps to correct interferences. The glass bulb at the end of the electrode is sensitive to electrostatic discharges. [. . . ]