Hanna Instruments HI 91 45 - Manuals

FUNCTIONAL DESCRIPTION 1) Battery Compartment 2) Probe Connector 3) Liquid Crystal Display 4) ON/OFF Button 5) CAL Button (to enter or exit calibration mode) 6) FACTOR button (to select altitude F1and salinity F2)* 7) UP and DOWN arrow keys (to select F1and F2 levels)* 8) HOLD key (to freeze display...

PROBE PREPARATION All probes are shipped dry by Hanna Instru-ments. To hydrate the probe and prepare itfor use, connect it to the meter and proceedas follows.1 Remove the red and black plastic cap which is for shipping purposesand can be discarded. 2 Wet the sensor by soaking the bottom 2½ cm (1"...

CALIBRATION PROBE POLARIZATION The probe is under polarization with a fixedvoltage of approximately 800 mV.Probe polarization is essential for stable mea-surements with the same recurring degree ofaccuracy.With the probe properly polarized, oxygen iscontinually "consumed" by passing throught...

MEASUREMENT Make sure the meter has beencalibrated and the protectivecap has been removed. Im-merse the tip of the probe inthe sample to be tested andensure that the temperaturesensor is also immersed. To display values in % satura-tion, press RANGE. For accurate dissolved oxygen measure-ments, a wa...

ALTITUDE COMPENSATION HI 9143 Press FACTOR and “F1” willbe displayed. Use the UP andthe DOWN keys to set thealtitude from 0 and 1900 m, insteps of 100 m. (With HI 9143Mthe altitude can be set from 0.0to 4.0 Km, in steps of 0.1 Km). HI 9145 With HI 9145 , all the D.O. readouts are referenced to sea l...

35 g/L 9.08.68.38.07.67.47.16.96.66.4 30 g/L 9.38.98.68.27.97.67.37.16.86.6 °C 10121416182022242628 0 g/L 11.310.810.3 9.99.59.18.78.48.17.8 10 g/L 10.610.1 9.79.38.98.58.27.97.67.4 20 g/L 9.99.59.18.78.48.07.87.57.27.0 Salinity (g/L) at Sea Level °F 50.053.657.260.864.468.071.675.278.882.4 The tabl...

PROBE & MEMBRANE MAINTENANCE The oxygen probe body is made of reinforcedpolypropylene for maximum durability.A thermistor sensor measures temperature ofthe sample. It is recommended that the protec-tive cap be always kept on the probe when theprobe is not in use. To replace the membrane or refil...

• Make sure that the rubber O-ring is seatedproperly inside the membrane cap. • With the sensor facing down, screw themembrane cap clockwise. Some electro-lyte will overflow. The Platinum cathode sensor (#8 in the Func-tional Description on page 2) should always bebright and untarnished. If it is ta...

BATTERY REPLACEMENT When the batteries are rundown "LOBAT" is displayedon the Liquid Crystal Dis-play.This is to inform the user that the display willbe shut-off after about 4 hours of use toprevent erroneous measurements due to lowvoltage. Battery replacement must only take place in anon-ha...

Use only the Hanna voltage adapters (such asHI 710005 or HI 710006 - see below) withproper polarity configuration. HI 9143 and HI 9145 can however also run on other adapters. In this case, check the correctpolarity of your adapter before connecting it tothe meter. ACCESSORIES HI 740027 1.5V AA batte...

WARRANTY All Hanna meters are warranted for two years against defects in workmanship and materials when used for their intended pur-pose and maintained according to the instruc-tions. The probes are warranted for a period of six months . This warranty is limited to repair or replace-ment free of cha...

CE DECLARATION OF CONFORMITY Recommendations for Users Before using these products, make sure that they are entirely suitable for the environmentin which they are used. Operation of this instrument in residential area could cause unacceptable interference toradio and TV equipment, requiring the oper...

MANDOWPR2 01/00 PRINTED IN PORTUGAL h t t p : / / w w w . h a n n a i n s t . c o m Hanna publishes a wide range of catalogs and hand-books for an equally wide range of applications.The reference literature currently covers areas suchas: • Water Treatment• Process• Swimming Pools• Agriculture• Food•...