HI4421

$100.00

HANNA – HI 4421

Extended DO range up to 90 ppm (mg/L) and 600%
Measures DO, atmospheric pressure and temperature
DO direct, DO direct/autohold, BOD: Biological Oxygen Demand, OUR: Oxygen Uptake Rate, SOUR: Specific Oxygen Uptake Rate
Temperature and atmospheric pressure automatic compensation
Manual salinity compensation
Fully customizable
Large log memory using different logging methods
Polarographic probe with built-in temperature sensor

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Range	Dissolved Oxygen	0.00 to 90.00 ppm; 0.0 to 600.0 % saturation
	Barometric Pressure	450 to 850 mmHg; 560 to 1133 mBar
	Temperature	-20.0 to 120.0°C; -4.0 to 248°F; 253.1 to 393.1 K
Resolution	Dissolved Oxygen	0.01 ppm; 0.1% saturation
	Barometric Pressure	1 mm Hg
	Temperature	0.1°C/°F/K
Accuracy	Dissolved Oxygen	±1.5% of reading ±1 digit
	Barometric Pressure	±3 mm Hg + 1 least significant digit
Measurement Modes		direct DO; BOD (biochemical oxygen demand); OUR (oxygen uptake rate); SOUR (specific oxygen uptake rate)
Calibration	Dissolved Oxygen	automatic/user standard, one or two points
	Barometric Pressure	single point
Temperature Compensation		0.0 to 50.0°C; 32.0 to 122.0°F; 237.1 to 323.1 K
Salinity Compensation		0 to 45 g/L (ppt)
Probe		thin body, polarographic dissolved oxygen probe with internal temperature sensor and 1 m (3.3’) cable (included)
Logging	Record Samples	up to 100 lots; 10,000 samples/lot for automatic logging; 5000 samples/lot for manual logging
	Logging Interval	from one second and up
	Type	manual, automatic
GLP Features		yes (last calibration data, calibration info)
Alarm (DO, BOD, OUR, SOUR)		inside and outside limits
PC Connection		opto-isolated USB and RS232
Display		graphic color LCD with on-screen help, graphing, language selection and custom configuration
Power Supply		12 VDC adapter (included)
Dimensions		160 x 231 x 94 mm (6.3 x 9.1 x 3.7”)
Weight		1.2 Kg (2.6 lbs.)