"pH meters, pH probes, pH controllers and much more"
C 781-334-2600 (Office) sales@mbhes.com
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"pH meters, pH probes, pH controllers and much more" C 781-334-2600 (Office) sales@mbhes.com
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Chlorine Analyzers: HI 96762, HI 96761 and more
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Send questions or comments to webmaster@mbhes.com© MBH Engineering Systems
2008
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Almost
identical to the HI 96761 and HI 96762 meters, this analyzer has a broader
range and will allow the user to measure total as well as free chlorine.
Total chlorine is given by the sum of free chlorine plus combined chlorine,
where free chlorine combines with nitrogen to produce chloramines.
Chloramines is harmful to aquatic life and damages water treatment plants
that use membranes for water purification (e.g. reverse osmosis). Thus it is
important to monitor levels of both free and total chlorine. Chloramines
concentration in water depends on pH, temperature, the initial ratio of
chlorine and amines, chlorine demand and total time of exposure. Both forms
of chlorine (free and combined) can exist at the same time, though they need
to be measured separately. HI 96724 is an auto-diagnostic portable
photometer for accurately measuring free and total chlorine. The
advanced optical system employs a specialized tungsten lamp and a narrow
band interference filter, assuring accurate readings between 0.00 to 5.00
mg/L. This instrument is equipped with Cal Check® validation
function and standards to validate good performance at any time. Taking just
a few short steps, the validation procedure is user-friendly and ensures
that the meter is properly calibrated wherever you go. Hanna photometers use
the exclusive ready-made, NIST traceable standards to verify the performance
of the instrument and recalibrate if necessary. Cuvets are constructed from
specialized optical glass to ensure the best and most consistent results.
The positive locking system ensures that the cuvet is in the same position
every time it is placed into the measuring cell. Our sample cell is designed
to fit a cuvet with a wide neck to make it easier to add both sample and
reagents. All instruments are factory calibrated and the
electronic and optical design minimizes the need for frequent calibration.
Ideal for field applications, these meters are splash-proof and the lamp and
filter units are protected from dust or dirt by a transparent barrier.
Display messages aid the user during routine operation. The auto-off feature
will disengage the meter after 10 minutes of non-use in measuring mode or 1
hour while in calibration mode. HI 96724 utilizes an adaptation of the USEPA
Method 330.5 and Standard Method 4500-Cl G. The reaction between chlorine
and the reagents causes a pink tint in the sample. Like all of meters,
it is available with calibration standards, reagents and accessories in a
case.
