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Instruction Manual

HI 9142

Portable Waterproof

Dissolved Oxygen Meter

This instrument is in Compliance with the CE Directives

http://www.hannainst.com

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Summary of Contents for HI 9142

Page 1: ...Instruction Manual HI 9142 Portable Waterproof Dissolved Oxygen Meter This instrument is in Compliance with the CE Directives http www hannainst com ...

Page 2: ...s per million ppm mg l Four1 5VAAbatteriesprovidepowerandmake theinstrumentcompletelyportable Themeterishousedinaruggedwater resistant caseformaximumprotectioninthefieldaswell as in the laboratory The dissolved oxygen probe has a membrane coveringthepolarographicsensorsandabuilt 1 DearCustomer Thank you for choosing a Hanna Instruments Product Please read this instruction manual carefully before u...

Page 3: ...or elements from the testing solution but allows oxygen to enter When a voltage is applied across the sensor oxygenthathaspassedthroughthemembrane reacts causing current to flow allowing the determinationofoxygen 1 D O Probe 2 ProtectiveCap 3 Water tight Shielded Cable 4 Polypropylene Probe Body 5 TemperatureSensor 6 O RingSeal 7 Silver Chloride Anode 8 Platinum Cathode sensor 9 OxygenPermeablePTF...

Page 4: ...aging the mem brane do not tap the membrane directly on the bottom 5 Place rubber O Ring properly inside the membrane cap 6 With the sensor facing down screw the cap clockwise Some electrolyte will overflow When not in use and during polar ization place the protective cap supplied in the kit with the meter Shipping cap black red THEN SCREW BACK ON THEN TAP FILL FIRST 5 HI9142 Range 0 0 to 19 9 mg ...

Page 5: ...t is recommended to perform this procedure every week CAL 7 CALIBRATION PROCEDURE PROBE POLARIZATION The probe is under polarization with a fixed voltage of approximately 800 mV Probe polarization is essential for stable mea surements with the same recurring degree of accuracy With the probe properly polarized oxygen is continually consumed bypassingthroughthe sensitivediaphragmanddissolvinginthee...

Page 6: ...5 9 5 8 Altitude Meters above Sea Level This gives an idea of the error that can be introducedatdifferentaltitudesandallowsyou to calculate the quantity to be subtracted to correct your reading F 32 0 35 6 39 2 42 8 46 4 50 0 53 6 57 2 60 8 64 4 68 0 71 6 75 2 78 8 82 4 86 0 89 6 93 2 96 8 100 4 104 4 9 TAKING MEASUREMENTS Makesurethemeterhasbeen calibrated and the protective cap has been removed ...

Page 7: ...esidesofthe membrane with your fin ger tip to ensure that no air bubbles remain trapped Do no directly tap the bottom with your fingerasthiswilldamage themembrane TWIST AND PULL fig 1 UNSCREW fig 2 11 SALINITY COMPENSATION The table below shows the influence of salt in the measurement of oxygen In HI 9142 all the readouts are referred to 0 g l of salinity value In fact salinity affects D O concent...

Page 8: ...ription at page 4 should always be bright and untarnished If it is tarnished or stained which could be due to contact with certain gasesorextendedusewithalooseordamaged membrane thecathodeshouldbecleaned You canuseacleanlint freecardboardorcloth Rub the cathode very gently side to side 4 5 times This will be enough to polish and remove any stainswithoutdamagingtheplatinumtip After wards rinsethepr...

Page 9: ...nedtoHannaInstruments obtainaReturn Goods Authorization from the Customer Ser vice Department first and then send it with shipment cost prepaid When shipping any instrument make sure it is properly packaged for complete protection Tovalidateyourwarranty filloutandreturnthe enclosedwarrantycardwithin14daysfromthe date of purchase All rights are reserved Reproduction in whole or in part is prohibite...

Page 10: ...vens In particular cases the meter could turn off In these cases it can be turned on by pressing the ON OFF key 17 CALIBRATION AND MAINTENANCE SOLUTIONS CHEMICAL TEST KITS CHLORINE METERS CONDUCTIVITY TDS METERS DISSOLVED OXYGEN METERS HYGROMETERS ION SPECIFIC METERS Colorimeters MAGNETIC STIRRERS pH Na NaCl METERS pH ORP Na ELECTRODES PROBES DO µS cm RH T TDS PUMPS REAGENTS SOFTWARE THERMOMETERS ...

Page 11: ...MAN9142R1 12 95 PRINTED IN PORTUGAL h t t p w w w h a n n a i n s t c o m ...

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