User manual HANNA INSTRUMENTS HI 84185

[. . . ] Instruction Manual ISE Ammonia Nitrogen Meter HI 84185 w w w. c o m 1 Dear Customer, Thank you for choosing a Hanna product. This manual will provide you with the necessary information for the correct use of the instrument. Please read it carefully before using the meter. [. . . ] Press CFM to delete the record or ESC to return to the previous screen without deleting. Deleting a record will reorganize the list of records. Press Delete All to erase all the stored records. After pressing Delete All the instrument will ask for confirmation. Press CFM to delete all the records or ESC to return to the previous screen without deleting. If the log is empty the message "No Records!" will be displayed. 15 TIPS FOR AN ACCURATE MEASUREMENT The instructions listed bellow should be carefully followed during analysis to ensure best accuracy. · Rinse the electrode with distilled or deionized water between samples, and blot dry taking care not to touch de membrane. · Select the adequate stability criteria. · Analyse the wine sample at room temperature. MEASUREMENT PROCEDURE · Fill the beaker up to the 50 mL mark with sample, place the stir bar into the beaker and then place the beaker in the appropriate place on the instrument top. · Place the electrode holder on the top of the beaker and secure it by turning clockwise. Close all unused holes of the beaker holder. · Immerse HI 61101 ammonia electrode and the HI 7662-T temperature probe approximately 2 cm (0. 8") into the sample to be tested paying attention to not touch the stir bar, and press Start. · Use the 1000 µL automatic pipette to add exactly 1 mL HI 84185-0 ISA and immediately close the stopper. · Wait until the reading is stable, CFM key displayed, if the "Reading confirm" option is selected, and then press CFM. If the "Reading confirm" option is disabled the instrument automatically memorizes the reading when this is stable and waits to add standard. Until the standard addition is detected the instrument will beep if beeper is enabled in Setup. 16 · Use the 1000 µL automatic pipette to add exactly 1 mL of HI 84185-1 Standard and immediatly close the stopper. · Wait until the reading is stable, CFM key displayed, if the "Reading confirm" option is selected, and then press CFM. If the "Reading confirm" option is disabled the instrument automatically memorizes the reading when this is stable and waits to add standard. Until the standard addition is detected the instrument will beep if beeper is enabled in Setup. · Use the 1000 µL automatic pipette to add exactly 1 mL of HI 84185-2 Standard and immediatly close the stopper. · Wait until the reading is stable, CFM key displayed, if the "Reading confirm" option is selected, and then press CFM. If the "Reading confirm" option is disabled the instrument automatically memorizes the reading when this is stable and computes result. · At the end of the measurement procedure the result is displayed as mg/L (ppm) N-NH3. Notes: · If the reading is out of range, the upper range value is displayed blinking. [. . . ] If under warranty, report the model number, date of purchase, serial number and the nature of the failure. If the repair is not covered by the warranty, you will be notified of the charges incurred. 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 shipment costs prepaid. When shipping any instrument, make sure it is properly packaged for complete protection. [. . . ]