Automatic UV Analyzers
The UVT-300 leverages the strengths of the many UV analyzers we have developed through the years, while also offering exceptional ease of use and maintenance.
- Cell washing mechanism with no drive mechanism.
- High-speed response and fully continuous measurement.
- An optical system enables high-accuracy measurement with stability over the long term.
- Direct-reading digital display.
- Easy to install, virtually anywhere.
- Reduced maintenance and management.
- A wide range of options.
Principle of Measurement
Light from a light source lamp passes through the sample cell, and is split into two directions using a half-mirror, and the amount of transmitted UV and visible light is detected by photocells. Part of the light from the lamp directly enters a photo cell on the light source side, and the amount of radiated UV and visible light are detected. By processing these four detection signals, it is possible to measure turbidity-corrected UV absorbance (UV-VIS) with automatic correction for the effects of changes in the turbidity of the sample water, and changes in the emission intensity of the light source lamp.
|Measurement range||0–0.5/0–1.0 absorbance (10 mm square cell conversion, 2 range switching)
Or 0–1.0 / 0–2.0 absorbance (10 mm square cell conversion, 2 range switching)
(VIS is guaranteed only for absorbance of 0–1.0)
|Measured quantities||Turbidity-corrected UV absorbance (UV-VIS)
UV absorbance (UV)
Visible light absorbance (VIS)
|Measured wavelengths||UV: 254 nm, Visible light: 546 nm|
|Measurement cycle||5 –99 min 59 sec|
|Measurement method||2-light path, 2-wavelength UV absorbance measurement method|
|Calibration method||Span calibration: Manual
Zero calibration: Manual
|Washing||Automatic washing with stream of washing cleaner (Continuous measurement during washing)|
|Range setting||Manual switching|
|Weight||Approx. 25 kg|
|Standard liquid||Potassium hydrogen phthalate aqueous solution|
|Repeatability||Within ±1% of full scale|
|Zero stability||Within ±2% of full scale/day|
|Span stability||Within ±2% of full scale/day|
|Ambient temperature change||Within ±2% of full scale/5°C|
|Measurement value output||AC100V±10V 50/60Hz Approx. 100VA|
|Error alarm indication||LED display, Closed contact output in case of error (AC 125 V, 1 A)|
Lamp burnt out
|Sample conditions||0.03–0.2 MPa 2–10 l/min (Must be ice-free)|
|Power||AC100V±10V 50/60Hz Approx. 100VA|
|Set up conditions||10–40°C during operation (Temperature gradient 10°C /hour or less)
45–95%RH (No condensation)
Specifications are subject to change due to product improvements.
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Shiga office: +81-77-544-6224