Hanna Instruments hi 93741 用户手册

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The HI 93744 meter measures the pH, the Magnesium (Mg), Calcium

(Ca) and Total Hardness and the Iron (Fe) content in water and

wastewater.

SPECIFICATIONS

Range

pH 5.9 to 8.5

Fe 0 to 400 µg/L

Mg Hardness 0.00 to 2.00 mg/L

Ca Hardness 0.00 to 2.70 mg/L

Total Hardness 0.00 to 4.70 mg/L

Resolution

pH 0.1

Fe 1 µg/L

Hardness 0.01 mg/L

Accuracy

pH ±0.1

Fe ±10 µg/L ±8% of reading

Hardness ±0.11 mg/L ±5% of reading

Typical EMC pH ±0.2

Deviation

Fe ±1 µg/L

Hardness ±0.02 mg/L

Light Source

Light Emitting Diode @ 555 nm

Method

For pH, Phenol red method. The reaction be-

tween pH and the reagent causes a red tint in

the sample.

For Iron, Adaptation of the TPTZ Method. The

reaction between iron and the reagent causes a

blue tint in the sample.

For Hardness, adaptation of the Standard Meth-

HI 93744

Hardness/Iron LR/pH

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• Fill the cuvet up to the mark with 10 mL of

unreacted sample and replace the cap.

• Place the cuvet into the holder and

ensure that the notch on the cap is
positioned securely into the groove.

• Press ZERO and "SIP" will appear on the display.

• Wait for a few seconds and the display will

show "-0.0-". Now the meter is zeroed and
ready for measurement.

• Remove the cuvet and add the

content of one packet of HI 93716
reagent. Replace the cap and shake
gently.

• Reinsert the cuvet into the instrument.

• Wait for 2 minutes and 30 seconds and press READ. "SIP" will

appear during measurement.

• The instrument directly displays concentration in mg/L of bromine

on the Liquid Crystal Display.

ZERO

Bromine