Hanna-instruments HI 96718 Manual do Utilizador descarregar pdf (Página 5)

SPECIFICATIONS

PRECISION AND ACCURACY

Range 0.0 to 12.5 mg/L

Resolution 0.1 mg/L

Accuracy ±0.1 mg/L ±5% of reading @ 25°C

Typical EMC Deviation ±0.1 mg/L

Light Source Tungsten lamp

Light Detector Silicon Photocell with narrow band interference filter @ 525nm

Method Adaptation of the Standard Methods for the Examination of Water and

Wastewater, 18

edition, DPD method. The reaction between iodine

and the reagent causes a pink tint in the sample.

Environment 0 to 50°C (32 to 122°F); max 95% RH non-condensing

Battery Type 1 x 9 volt

Auto-Shut off After 10' of non-use in

measurement mode

;

after 1 hour of non-use in

calibration mode

;

with last reading reminder.

Dimensions 192 x 102 x 67 mm (7.6 x 4 x 2.6")

Weight 290 g (10 oz.).

REQUIRED REAGENTS

Code Description Quantity/test

HI 93718-0 DPD Powder Reagent 1 packet

PrecisionPrecision

Precision is how closely repeated measurements

agree with each other. Precision is usually

expressed as standard deviation (SD).

AccuracyAccuracy

Accuracy is defined as the nearness of a test

result to the true value.

Although good precision suggests good accuracy,

precise results can be inaccurate. The figure

explains these definitions.

In a laboratory using a standard solution of 2.5

mg/L iodine and a representative lot of reagent,

an operator obtained with a single instrument a

standard deviation of 0.1 mg/L.

1 2 3 4 5 6 7 8 9 10 ... 23 24

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Hanna-instruments HI 96718 Manual do Utilizador Página 5