Máy đo DO/áp suất khí quyển/nhiệt độ HANNA HI 4421 (0.00 to 90.00 ppm; 0.0 to 600.0 % saturation; 450 to 850 mmHg; 560 to 1133 mBar)
THÔNG SỐ KỸ THUẬT:
Model: HI 4421
Hãng sản xuất: HANNA - USA
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.)
