User manual HANNA INSTRUMENTS HI 98116

[. . . ] AGRITESTTM pH and EC Meter pH and TDS Meter AGRITESTTM 1 OPERATION · Turn the meter on and select the measurement mode: pH or EC/TDS. · Dip the probe in the sample to be measured. [. . . ] · Wait for a couple of minutes for the display to stabilize and, if necessary, correct the reading (to "1. 41" for AGRITEST TM or "1 5 0 0 " for AGRITESTTM 1) by slowly turning the ppm/mS Calibration Trimmer with a small screwdriver provided. MAINTENANCE If the probe remains dry for a long time, it is necessary to reactivate it by immersing it in an HI 70300 storage solution for 4 hours before use. The probe should also be rinsed clean with plenty of water after use. If you need to replace the electrode, use an hexagon key to remove the screw on the side of the probe before detaching it from the meter. BATTERY REPLACEMENT When the unit cannot be switched on or the display segments fade, it is necessary to replace all 3 x 1. 4V batteries. Batteries should only be replaced in a safe area using the battery type specified in this instruction manual. Loosen the upper screw and slide off the cover on the back of the meter. Replace all three batteries while paying attention to their polarity. Reinsert the cover and tighten the screw. It is recommended to recalibrate the instrument whenever the batteries are replaced. RECOMMENDATIONS FOR USERS Before using these products, ensure that they are entirely suitable for the environment in which they are used. Operation of these instruments in residential area could cause unacceptable interference to radio and TV equipments, requiring the operator to take all necessary steps to correct interferences. Any variation introduced by the user to the supplied equipment may degrade the instrument's EMC performance. [. . . ] DEVIATION pH CALIBRATION Single point EC/TDS CALIBRATION Single point TEMPERATURE Automatic from COMPENSATION 5 to 50ºC (41 to 122ºF) with a of 2% per degree °C PROBE HI 1282 (included) BATTERY TYPE 3 x 1. 4V (Duracell MP675H or equivalent) LIFE approx. 290 hours ENVIRONMENT 0 to 50ºC (32 to 122ºF) max 95% RH non-condensing DIMENSIONS 194x29x15 (7. 6x1. 2x0. 6") WEIGHT 70 g (2. 5 oz. ) ACCESSORIES HI 771P pH 7. 0 and 1. 41 mS/cm calibration solutions (20 mL each) and screwdriver (AGRITESTTM) AGRITEST HI 772P pH 7. 0 and 1500 mg/L calibration solutions (20 mL each) and screwdriver (AGRITESTTM 1 AGRITEST 1) HI 70300M Storage solution, 230mL HI 1282 pH and EC/TDS replacement probe AGRITESTTM is a Trademark of "Hanna Instruments" Visit our Internet Home Page: http://www. hannainst. com Authorized Dealer ISTRAGRIR2 07/97 [. . . ]