HANNA HI97771 微电脑余氯-超高浓度总氯防水光度测定仪 (Free Clo: 0-5 mg/L, Total Clo: 0- 500 mg/L)

Free Chlorine Range: 0.00 to 5.00 mg/L (as Cl2)

Free Chlorine Resolution: 0.01 mg/L

Free Chlorine Accuracy: ±0.03 mg/L ±3% of reading

Total Chlorine Range: 0 to 500 mg/L (as Cl2)

Total Chlorine Resolution: 1 mg/L

Total Chlorine Accuracy: ±3 mg/L ±3% of reading

Chlorine Method: free chlorine: adaptation of the EPA 330.5 DPD method total chlorine: adaptation of the Standard Methods for Examination of Water and Wastewater, 20th edition, 4500-Cl.

Photometer/Colorimeter Light Source: Light emitting diode

Photometer/Colorimeter Light Detector: silicon photocell with narrow band interference filter @ 525 nm

Bandpass Filter Bandwidth: 8 nm

Bandpass Filter Wavelength Accuracy: ±1.0 nm

Cuvette Type: round, 24.6 mm diameter (22 mm inside)

GLP: date, time of last calibration

Display: 128 x 64 pixel B/W LCD with backlight

Logging Type: automatic logging

Logging Memory: 50 measurement

Battery Type/Life: 1.5V AA battery (3 pcs.) / > 800 measurements (without backlight)

Automatic Shut-Off: After 15 minutes of inactivity (30 minutes before a READ measurement)

Environment: 0 to 50°C (32 to 122°F); relative humidity: 100% (IP67)

Weight: 380 g (13.4 oz.) with batteries

Dimensions: 142.5 x 102.5 x 50.5 mm (5.6 x 4.0 x 2.0")

Ordering Information: HI97771 is supplied with cuvettes (2), caps (2), plastic inserts for cuvettes (2), 1.5V AA batteries (3), instruction manual, and instrument quality certificate HI97771C is supplied with CAL-Check standards, cuvettes (2), caps (2), plastic inserts for cuvettes (2), scissors, cuvette cleaning cloth, 1.5V AA batteries (3), instruction manual, and instrument quality certificate.

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