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Manual abstract: user guide HANNA INSTRUMENTS HI 9143M
Detailed instructions for use are in the User's Guide.
[. . . ] Instruction Manual
HI 9143, HI 9143M HI 9145
Portable Waterproof Microprocessor Dissolved Oxygen Meters
SAM
PLE
ppm
°C
ON/O
FF
HI 91 Micro 43 Auto processo r Diss Cal o Oxyg lved en M eter
CAL
RAN
GE
HOL
D
FAC TOR
http://www. hannainst. com
These Instruments are in Compliance with the CE Directives
Dear Customer, Thank you for choosing a Hanna Product. Please read this instruction manual carefully before using the instrument. This manual will provide you with the necessary information for a correct use of the instrument, as well as a precise idea of its versatility. The instrument is in compliance with tives EN 50081-1 and 50082-1. [. . . ] With the probe properly polarized, oxygen is continually "consumed" by passing through the sensitive diaphragm and dissolving in the electrolyte solution contained inside the probe. If this operation is interrupted, the electrolyte solution continues to be enriched with oxygen until it reaches an equilibrium with the surrounding solution. Whenever measurements are taken with a non-polarized probe, the oxygen level indicated is that of the test solution as well as any oxygen present in the electrolyte solution. The Hanna oxygen meter shown here automatically polarize the probe when they are switched on. Calibration is simple and is recommended every time the meter is switched on. · Make sure the probe is ready for measurement (see page 5), i. e. the membrane is filled with electrolyte and probe is connected to the meter and properly polarized. · "COND" appears on the ON/OFF display to inform you that the probe is in auto-conditioning (automatic polarization) mode. · Once "COND" disappears the probe is polarized and instrument can be calibrated.
6
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For an accurate calibration, it is recommended to wait an additional 5 or 10 minutes to ensure optimum conditioning of the probe. Remove the protective cap.
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Press CAL. "----" appears on the larger LCD together with "CAL" to indicate that the instrument is in calibration mode. The instrument will automatically standardize itself to the actual saturation value. 1 minute it will show "100%" on the LCD and a small "SAMPLE" to indicate that the calibration is complete.
CAL
CAL
SAMPLE
%
°C
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HI 9143 only: press FACTOR and ensure F1 and F2 are set to the appropriate altitude and salinity values (pages 10-11).
Notes:· The instrument must be calibrated whenever the probe, membrane or the electrolyte is changed. · To exit the calibration mode during calibration, press CAL. · The display may be switched from readCAL ings in % saturation to mg/L without recalibration, by simply pressing RANGE.
RANGE
7
MEASUREMENT Make sure the meter has been calibrated and the protective cap has been removed. Immerse the tip of the probe in the sample to be tested and ensure that the temperature sensor is also immersed. To display values in % saturation, press RANGE.
RANGE
For accurate dissolved oxygen measurements, a water movement of at least 30 cm (12")/sec is required. This is to ensure that oxygen depleted on the membrane surface is constantly replenished. A moving stream will provide adequate circulation. During field measurements, this condition may be obtained by manually stirring the probe. Accurate readings are not possible while the liquid is statinary. During laboratory measurements, the use of a magnetic stirrer to ensure a certain agitation of the fluid is recommended. [. . . ] A 12VDC power source can also be used to power the unit (see accessories). Simply unscrew the protective cap on the top of the instrument (#10 page 3) and plug the power supply into the socket. Note: The instrument uses the following configuration.
+
14
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Use only the Hanna voltage adapters (such as HI 710005 or HI 710006 - see below) with proper polarity configuration.
HI 9143 and HI 9145 can however also run on other adapters. In this case, check the correct polarity of your adapter before connecting it to the meter.
ACCESSORIES HI 740027 HI 7041S HI 76407/10 HI 76407/20 HI 76407A/P HI 710005 HI 710006 HI 710012 HI 710013 HI 710014 1. 5V AA battery (4 pieces) Refilling Electrolyte Solution, 30 mL Spare probe with 10 meters (33') cable Spare probe with 20 meters (66') cable 5 spare membranes 115 VAC to 12 VDC, US plug 230 VAC to 12 VDC, European plug 240 VAC to 12 VDC, UK plug 230 VAC to 12 VDC, S. [. . . ]
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