User manual HANNA INSTRUMENTS HI 83141

[. . . ] This instrument is in compliance with the directives. FUNCTIONAL DESCRIPTION Range SPECIFICATIONS 0. 00 to 14. 00 pH ±1999 mV 0. 0 to 100. 0°C Resolution 0. 01 pH / 1 mV / 0. 1°C Accuracy (@20°C/68°F) ±0. 01 pH / ±1 mV ±0. 4°C Typical EMC Deviation ±0. 07 pH / ±5 mV / ±1°C pH Calibration Manual, at 2 points through offset and slope trimmers Offset Calibration ±1 pH Slope Calibration from 85 to 105% ORP Calibration Factory calibrated Temperature Calibration Factory calibrated Temperature Compensation Automatic, from 0 to 70°C Probes (included) HI 1230B pH-electrode HI 7669AW temperature probe Battery Type 1 x 9V alkaline Battery Life 100 hours of continuous use Environment 0 to 50°C (32 to 122°F); max 95% RH non-condensing Dimensions 164 x 76 x 45 mm (6. 5 x 3. 0 x 1. 8") Weight 180 g (6. 3 oz. ) PRELIMINARY EXAMINATION Remove the instrument from the packing material and examine it carefully to make sure that no damage has occurred during shipment. The meter is supplied complete with · HI 1230B plastic-body, double-junction, gel, combination pH electrode with BNC and 1 m cable · HI 7669AW temperature probe with 1 m cable · 1 x 9V battery, screwdriver and instructions. Note: Conserve all packing material until the instrument has been observed to function correctly. [. . . ] To maintain the EMC performance of equipment, the recommended cables noted in the user's manual must be used. Any variation introduced by the user to the supplied equipment may degrade the instruments' EMC performance. To avoid electrical shock, do not use these instruments when voltages at the measurement surface exceed 24Vac or 60Vdc. To avoid damage or burns, do not perform any measurement in microwave ovens. Hanna Instruments reserves the right to modify the design, construction and appearance of its products without advance notice. OPERATIONAL GUIDE The meter is supplied complete with a 9V battery. Remove the battery compartment cover on the back of the meter, install the battery while paying attention to its polarity. Always remove the electrode protective cap before taking any measurements. If the electrode has been left dry, soak the tip in HI 70300 Storage Solution for half an hour to reactivate it. Connect the pH electrode and the temperature probe to the proper connectors on the top of the instrument. Turn the meter ON by pressing the ON/OFF key. CALIBRATION The ORP (mV) and temperature ranges are factory calibrated. Contact the nearest Hanna Service Center for recalibration, if needed. For greatest accuracy, frequent pH calibration of the instrument is recommended. The instrument should be recalibrated for pH: a) Whenever the pH electrode is replaced. · Rinse and immerse the pH electrode in pH4. 01 or pH10. 01 buffer (2nd calibration point) and stir gently. · Wait a couple of minutes and adjust the SLOPE trimmer on the lower right of the front panel until the LCD shows the pH value at the noted temperature. pH BATTERY REPLACEMENT When the battery becomes weak, the meter displays a blinking additional decimal point on the left side of the LCD. When the low battery indicator appears only a few hours of battery life is remaining. Replacement must only take place in a non-hazardous area using an alkaline 9V battery. To take pH measurements simply submerge the pH electrode (at least 4cm/1½") and the temperature probe (as close as possible to the electrode) into the sample to be tested. The temperature probe can be used independently to take temperature measurements, or it can be used in conjunction with the pH electrode to utilize the meter's ATC capability. Shake briefly and wait a couple of minutes for the reading to stabilize. [. . . ] · Remove the protective cap, rinse the tips of pH electrode and temperature probe with some pH7. 01 solution. Immerse them into a pH7. 01 buffer solution, stir gently and wait a couple of minutes for stable reading. Note: The electrode should be submerged approximately 4 cm (1½") into the solution and the temperature probe should be located as close as possible to the electrode. [. . . ]