User manual HANNA INSTRUMENTS HI 98309

[. . . ] UPW HI98309 Ultra Pure Water Tester OPERATION: · Remove the protective cap. [. . . ] Distilled/Deionized Water Resistance (MegaOhm) 1 2 5 10 15 20 50 Equivalent UPW read-out (µS/cm) 1. 000 0. 500 0. 200 0. 100 0. 067 0. 050 0. 020 display shows "1. 500". BEPS AND BATTERY REPLACEMENT: UPW is supplied with BEPS (Battery Error Preventing System) which avoids any erroneous reading due to low batteries level, by switching the meter off. To replace the batteries, slide off the battery compartment cover and replace all four 1. 5V batteries while paying attention to their polarity. Batteries should only be replaced in a nonhazardous area using the battery type specified in this instruction sheet. ONE YEAR WARRANTY AND SERVICEABLE: Covered by one year warranty against defects in workmanship and materials, this tester is now completely serviceable. The UPW is in compliance with the CE directives. CALIBRATION: All UPW testers are factory-calibrated with freshly prepared low-conductivity solutions. Infact , due to their high instability, calibration solutions in the UPW range (below 2 µS/cm) can not be supplied with the meter. However, if your meter needs to be recalibrated, use a 1. 500 µS/cm solution prepared by a qualified laboratory and keep it airtight. · Rinse the electrode with some of the calibration solution. Manufacturers since 1978 · Allow the reading to stabilize and with a small screwdriver turn the calibration trimmer until the Visit our Internet Home Page: http://www. hannainst. com ELECTRODE REPLACEMENT: UPW HI98309 Ultra Pure Water Tester SPECIFICATIONS: RANGE 0. 000 1. 999 µS/cm RESOLUTION 0. 001 µS/cm ACCURACY (@20°C/68°F) ±2% f. s. ENVIRONMENT 0 to 50 C (32 to 122 F); 95% RH not condensing BATTERY TYPE 4 x 1. 5V alkaline (included) BATTERY LIFE approx. 120 hours of continuous use DIMENSIONS 175 x 41 x 23 mm (7. 9 x 1. 8 x 1") WEIGHT 78 g (2. 7 oz. ) Internal circuit: The electrode is built-in inside the plastic casing and can be easily replaced in the following way: · Slide off the battery cover. [. . . ] In case of any problem, reslide and reinsert it. · Reinsert the battery compartment cover. IS98309-R4 07/01 [. . . ]