Hanna Instruments Marine Instruments Turbidity and Free/Total Chlorine Meter User Manual

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HI 93414 is a high accuracy, combined meter that benefits from Hanna’s years of experience as
manufacturer of analytical instruments.
The HI 93414 successfully combines turbidity and colorimetric measurements to meet the needs of
measuring the most important parameters of drinking water: turbidity and free/total chlorine. The
meter is especially designed for water quality measurements, providing reliable and accurate
readings on low turbidity and chlorine values. The HI 93414 meets and exceeds the requirements of
USEPA and Standard Methods both for turbidity and colorimetric measurements.
The instrument is based on a state-of-the-art optical system which guarantees accurate results. The
optical system, consisting in a tungsten filament lamp, three detectors (scattered,transmitted for
turbidimeter range and one for colorimeter range), and a narrow band interference filter @ 525 nm
assures long term stability and minimizes stray light and color interferences. It also compensates for
variations in intensity of the lamp, making no need for frequent calibration.
The 25 mm round cuvets made from special optical glass guarantee the repeatability and consistency
of the measurements.
Turbidity measurements can be made in the 0.00 to 1000 NTU (Nephelometric Turbidity Units)
range. The instrument has an EPA compliance reading mode which rounds the reading to meet EPA
reporting requirements.
Depending on the measured sample and needed accuracy, normal measurement, continuous
measurement or signal averaging measurement can be selected.
Free or Total Chlorine measurements can be made in the 0.00 to 5.00 mg/L (ppm) range.
With the powerful CAL CHECK™ function, the good performance of the instrument can be validated
at any moment by using the exclusive Hanna ready-made, NIST traceable standards.
Calibration can be performed at any time for turbidity and for colorimetric range.
For turbidity, a two, three or four-point calibration is available using the supplied (<0.1, 15, 100
and 750 NTU adjustable calibration points) or user prepared standards. For colorimeter, a one-point
calibration can be performed.
HI 93414 has complete G.L.P. (Good Laboratory Practice) functions that allows traceability of the
calibration conditions. The last calibration points, time and date can be checked by a single key
touch. HI 93414 has a user-friendly interface with an easy to read, large Liquid Cristal Display.
Displayed codes guide the user step by step with routine operation and through calibration. Confirmation
and error acoustic signals help the user during instrument operation.
The HI 93414 combined meter is a truly portable instrument. It is supplied with a rigid carrying
suitcase that offer protection for harsh environments. The instrument is also splash proof.
One battery set is enough for at least 1500 measurements. The battery charging percentage and low
battery condition is displayed on the LCD to avoid unexpected battery failure. In addition, the
instrument has an auto shut-off feature and turns off after 15 minutes of non-use to save batteries life.
The instrument is equipped with backlight and the current time is displayed continuously on the LCD.
GENERAL DESCRIPTION
GENERAL DESCRIPTION

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