Hanna Instruments HI 9828 Instruction Manual

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Hanna Instruments HI 9828 Instruction Manual Manual pdf 11 page image

11Cigarette lighter supplyWith HI 710046 it is possible to recharge HI 9828 with a car.It is sufficient to connect the cable to the meter and to the Cigarette lighter of car.• On display the message “Battery charging in progress” appears and then thebattery icon.• For complete batteries recharging 14 hours are necessary.NOTE: It is possible to recharge batteries with the meter ON; if Auto shut-offfeature is enabled, the meter will switch off automatically when the fixedtime is expired.1.5 PROBE DESCRIPTION & INSTALLATIONHI 9828 is supplied with HI 769828DO, probe for DissolvedOxygen, Temperature and Conductivity measurents.In the probe body it is also possible to insert a pH or pH/ORP sensor; please see Appendix A for the order codes.The galvanic D.O. sensor with the built-in thermistor allowto have stable temperature compensated readings in fewseconds. The thin permeable membrane isolates the sensorelements from the testing solution, but allows oxygen to en-ter. Oxygen that passes through the membrane causes acurrent flow, from which the oxygen concentration is deter-mined.Before installing the probe, it is necessary to activate the D.O.sensor; see paragraph 1.5.1 for procedure.The concuctivity sensor is a 4 rings system that allows stableand linear readings without interferences in all the range.1.5.1 D.O. sensor activationThe D.O. probe is shipped dry. To hydrate the probe and prepare it for use pro-ceed as follows:• Remove the black & red plastic cap. This cap is used for shipping purposesonly and can be thrown away.