Hanna-instruments HI 96750 Instrukcja Użytkownika Pobierz pdf (Strona 5)

SPECIFICATIONS

PRECISION AND ACCURACY

Range 0.0 to 10.0 mg/L LR

10 to 100 mg/L MR

Resolution 0.1 mg/L LR

1 mg/L MR

Accuracy LR: ±1.5 mg/L ±7% of reading @ 25°C

MR: ±15 mg/L ±7% of reading @ 25°C

(excluding dilution error)

Typical EMC Deviation ±0.1 mg/L LR

±1 mg/L MR

Light Source Light Emitting Diode

Light Detector Silicon Photocell with narrow band interference filter @ 466nm

Method Tetraphenylborate Method. The reaction between potassium and re-

agents causes turbidity 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 104 x 69 mm (7.6 x 4.1 x 2.7”)

Weight 360 g (12.7 oz.).

REQUIRED REAGENTS

Code Description Quantity/test

HI 93750A-0 Potassium Reagent 6 drops

HI 93750B-0 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 2.00

mg/L potassium and a representative lot of

reagent, an operator obtained with a single

instrument a standard deviation of 0.06 mg/L.

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

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