Chapter 4 - Probe Installation; Sensor Descriptions - Hanna Instruments HI 9829 Instruction Manual

Multiparameter meter with available gps, logging probe, turbidity and ion measurements

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Chapter 4 - PROBE INSTALLATION

HI 7609829 and HI 7629829 multisensor probes are used for the m e a -

surements of pH, ORP, conductivity, turbidity, dissolved oxygen, chloride, nitrate-

nitrogen, ammonium-nitrogen and temperature. Each probe can utilize 3 sen-

sors. A description of each sensor follows.

HI 7609829-0 Combination pH sensor features a glass

pH sensitive bulb and a silver/silver chloride double junc-

tion reference with gelled electrolyte.

HI 7609829-1 Combination pH/ORP sensor features a

glass sensitive bulb for pH readings, a platinum sensor for

redox measurements and a silver/silver chloride double junc-

tion reference with gelled electrolyte.

Note See section 4.2.1 for pH preparation.

See section 4.2.2 for ORP activation.

HI 7609829-2 Galvanic dissolved oxygen (D.O.)

sensor. The thin gas permeable membrane isolates the

sensor elements from the testing solution but allows oxygen

to pass through. The oxygen that passes through the mem-

brane is reduced at the cathode and causes a current, from

which the oxygen concentration is determined. The D.O. sen-

sor conforms to Standard Methods 4500-AG, EPA 360.1.

Note The D.O. sensor needs to be activated before

installation. See section 4.2.3 for details.

HI 7609829-3 4-electrode conductivity sensor. The sensor

is immune to polarization or surface coatings.

The HI 7609829-4 Combination EC/Turbidity sensor. It

includes a 4-electrode conductivity sensor and a turbidity

sensor that conforms to ISO 7027 standards in a single

sensor body. The turbidity sensor uses an optical technique

to measure suspended particles in water.

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