Hanna Instruments HI 8510 Instruction Manual

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Hanna Instruments HI 8510 Instruction Manual Manual pdf 58 page image

56SUGGESTED INSTALLATIONSpH METERWITH CONVENTIONAL ELECTRODESMEASUREMENTS CAN BETAKEN FROM DISTANCES UP TO10 METERS (33 FEET)DRY ENVIRONMENTLESS THAN 80%RELATIVE HUMIDITYMAXIMUM 10 METERSSHORT DISTANCE, INDOOR INSTALLATIONDue to the low current involved, a very highgrade of insulation is required.A dry environment is needed in order to ob-tain a level of insulation not lower than 1012 Ω.This type of connection is very delicate andrequires constant attention to maintain properoperating conditions.The conventional electrodes should be usedin indoor applications only, and should notuse a cable longer than 10 m (33').MEDIUM DISTANCE,INDOOR/OUTDOOR INSTALLATIONWhen an outdoor installation is required, it isnecessary to install a transmitter to obtainaccurate readings at distances from 10 to50 m (33-165').Since the introduction of AmpHel® these dis-tances are no longer a problem. You are nowable to connect your meter directly to anAmpHel® electrode, saving the cost of a trans-mitter or costly coaxial cable.The standard cable length of the AmpHel®electrode is 5 m (16.5'). Additional lengths ofregular cable up to 50 m (165'), can bepH-ORP METER