Dear Customer, PRELIMINARY EXAMINATION Thank you for choosing a Hanna Instruments Product. Remove the instrument from the packing Please read this instruction manual carefully material and examine it carefully to make before using the instrument. sure that no damage has occurred during shipment.
working temperature. If not, adjust the pH CALIBRATION pH meter to read the correct value. HI 8427: Note: The °C knob is not effective during pH 7 calibration, since pH 7 is used • Connect the simulator to as reference. the pH meter using the HI 7858/1 cable provided.
• Make sure that the the two additional mV (ORP) CALIBRATION decimal points are not displayed. If they are displayed, change the battery of the HI 8427: simulator before performing the calibra- • Connect the simulator to tion. the mV (ORP) meter us- •...
pH VALUES AT VARIOUS CABLE HIGH IMPEDANCE TEST TEMPERATURE HI 8427 only: Temperature has an effect on pH. The cali- bration buffer solutions are effected by tem- • Connect the simulator to perature changes to a lesser degree than the cable (e.g.HI 7855). normal solutions (see table below).
ACCESSORIES BATTERY REPLACEMENT HI 710001 Soft carrying case for HI 931001, dimensions 230 x 100 x 50 mm The instruments use a 9 volt battery that lasts for approximately 100 hours or 500 hours of HI 7858/1 Extension cable with 3 mm di- continuous use with HI 8427 and HI 931001 ameter (0.12"), 1m (3.3') long respectively.
TV equipments, requiring the operator to take all necessary steps to correct interferences. Hanna Instruments reserves the right to modify Any variation introduced by the user to the supplied equipment may degrade the the design, construction and appearance of its instruments' EMC performance.
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