Dear Customer, PRELIMINARY EXAMINATION Thank you for choosing a Hanna Instruments Remove the instrument from the packing material Product. and examine it to make sure that no damage Please read this instruction manual carefully has occurred during shipping. If there is any before using the instrument.
The probe included with the meter is supplied METER FUNCTIONAL DESCRIPTION with a 4 m (13') cable that allows measurements to be taken even in even hard to reach places. For applications that require longer probe cables, the HI 76407/10 and HI 76407/20 probes with a 10 m (33') or 20 m (67') cable are available.
SPECIFICATIONS PROBE INITIAL PREPARATION Probe Preparation All D.O. probes from Hanna Instrument are Range 0.0 to 19.9 mg/L (ppm) shipped dry. To hydrate the probe and pre- pare it for use, connect it to the meter and Resolution 0.1 mg/L proceed as follows.
ZERO CALIBRATION CALIBRATION PROCEDURE • Dip the probe into HI 7040 zero oxygen solution and stir gen- tly for 2-3 minutes. PROBE POLARIZATION • Allow 2 minutes for the LCD The probe is under polarization with a fixed readout to stabilize. voltage of approximately 800 mV.
TAKING MEASUREMENTS ALTITUDE & SALINITY COMPENSATION Make sure the meter has been If the sample contains salts or if you are calibrated and the protective performing the measurements at a different cap has been removed. Im- altitude than sea level, the readout values must merse the tip of the probe in the be corrected, taking into account the lower sample to be tested.
SALINITY COMPENSATION PROBE & MEMBRANE MAINTENANCE The table below shows the influence of salt in the measurement of oxygen. The oxygen probe body is made of reinforced plastic for maximum durability. In HI 9142 all the readouts are referred to 0 g/l A thermistor temperature sensor provides tem- of salinity value.
• With the sensor facing down, screw the BATTERY REPLACEMENT membrane cap clock-wise. Some electro- lyte will overflow. When the battery level is low, The Platinum cathode (#8 in the Functional "V" is displayed on the LCD Description at page 4) should always be bright to warn the user that the bat- tery needs to be replaced.
If the instrument is to be re- turned to Hanna Instruments, obtain a Return Goods Authorization from the Customer Ser- vice Department first and then send it with shipment cost prepaid.
CE DECLARATION OF CONFORMITY Recommendations for Users Before using this product, make sure that it is entirely suitable for the environment in which it is used. Operation of this instrument in residential area could cause unacceptable interfer- ences to radio and TV equipments, requiring the operator to take all necessary steps to correct interferences.
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