HACH DR3900 可见分光光度计（±3.0 Abs，范围320-1100nm）

Operating Mode: Transmittance (%), Absorbance, Concentration, Scanning
Source Lamp: Gas-filled Tungsten (visible)
Wavelength Range: 320 to 1100 nm
Wavelength Accuracy: ± 1 .5 nm (wavelength range 340 to 900 nm)
Wavelength Selection: Automatic, based on method selection
Wavelength Reproducibility: ± 0.1 nm
Wavelength Calibration: Automatic
Spectral bandwidth: 5 nm
Photometric Measuring Range: ± 3.0 Abs (wavelength range 340 to 900 nm)
Photometric Accuracy : 5 mAbs at 0.0 to 0.5 Abs, 1 % at 0.50 to 2.0 Abs
Photometric Linearity: < 0.5 % to 2 Abs; ≤ 0.01 % at >2 Abs with neutral glass at 546 nm
Stray Light : < 0.1 %T at 340 nm with NaNO2
Display Graphical display: 7 TFT WVGA (800 pix x 480 pix)
Data Logger: 2000 measured values (Result, Date, Time, Sample ID, User ID)
Preprogrammed Methods: > 240
User Programs: 100
Sample Cell Compatibility: 1 3 mm round, 1 6 mm round, 1 cm & 5 cm rectangular, 1 round, 1 square
Dimensions (H x W x D): 5.9 in x 1 3.8 in x 1 0 in (151 mm x 350 mm x 255 mm)
Weight : 9.26 lbs. (4.2 kg)
Operating Conditions:  10 to 40 °C (50 - 104 °F)
Storage Conditions -30 to 60 °C (-22 to 140 °F)
Enclosure Rating: IP30
Power Supply Benchtop Power Supply
Power Requirements (Voltage): 110 - 240 V AC
Power Requirements (Hz): 50/60 Hz
Interfaces:  USB type A (2), USB type B, Ethernet, RFID module