: Maintain a room temperature between 15°C and 35°C, with humidity below 85%. Electrical Safety Always use a grounded, three-pronged power outlet.
Choose Photometric Mode (Absorbance or Transmittance). Set Wavelength: Set the desired wavelength (λ).
Secure the data cable connection. Verify device manager port assignments. Where to Download the Free PDF Manual hitachi+u+2800+spectrophotometer+user+manual+free
Press the or Auto-Zero button to set the reference baseline to 0.000 Abs (100% T).
Restart the instrument. If the error persists, contact factory service to realign the drive gears. Tungsten lamp is aging, burning out, or misaligned. : Maintain a room temperature between 15°C and
Ensure the sample compartment is empty and the cover is closed before powering on. The system performs a self-diagnostic and wavelength calibration upon startup. Calibration & Baseline:
The Hitachi U-2800 utilizes a double-beam optical system that splits light into a sample beam and a reference beam. This design compensates for light source fluctuations, ensuring high baseline stability and precise measurements across a wavelength range of 190 nm to 1100 nm. Key Specifications : Double-beam ratio recording system Wavelength Range : 190 to 1100 nm Spectral Bandwidth : 1.5 nm Stray Light : Less than 0.05% (at 220 nm and 340 nm) Wavelength Accuracy : ±0.3 nm Set Wavelength: Set the desired wavelength (λ)
: Use the keypad or connected PC software to select your desired mode (e.g., Photometry, Wavelength Scan, or Time Scan).
Silicon photodiode, delivering sensitive and linear electronic responses. 2. Main Measurement Modes
This comprehensive guide serves as a practical reference manual, covering installation, core operations, maintenance protocols, and troubleshooting steps for the Hitachi U-2800 system. Introduction to the Hitachi U-2800 Spectrophotometer