Products Catalog

Specification

Basic model configured by condensing a great variety of measurement functions into a compact and simple-to-operate design.

Spectrophotometer U-1900 answering a broad range of measurement needs.
Measured data excellent in accuracy and reliability is assured by stable basic performance.

Features
Adoption of ratio beam optics
Ratio beam is a scheme in which part of the beam is branched with a half mirror and its light quantity is detected with a detector to obtain a signal reference.

Thanks to the ratio beam scheme, an energy change in the light source, a temporal change of optical elements, etc. can be compensated.
Therefore, highly stable photometric values are obtainable.
This always ensures reliable results even in long-time measurement.
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Incorporation of stigmatic concave diffraction grating
The optics of this instrument adopts the Seya-Namioka monochromator widespread as a representative concave diffraction grating monochromator.
Because a concave diffraction grating has both beam condensing and dispersing functions, an optical system can be configured with fewer mirrors. In a spectrophotometer, use of fewer mirrors signifies a shorter optical path, thus giving rise to an aberration-free bright optics.

For elimination of the aberrations which were essentially unavoidable in the past, a stigmatic concave diffraction grating has been developed by applying Hitachi’s original technology. As a result, a higher resolution has been realized.

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Large LCD and user-friendly keypad
Display characters are larger than those of the preceding instrument (U-1800).
Spectrum and working curve are easier to see.
In addition, a keypad featuring an easy-to-use key layout has been employed, so condition setting and measurement can be completed with the briefest possible key operation.
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Measurement methods savable
A maximum of 5 measurement methods can be saved.
This ensures exact and easy re-measurement.
*: Because selection is allowed among plural methods, an analyst’s burden can be reduced and necessary time can be shortened substantially.

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Personal computer-based instrumentcontrol and data processing
High-level data processing can be carried out by controlling the ModelU-1900 from a PC when the optional UV Solutions program is installed.
Also, report generation will be supported through data pasting, transfer,etc. to another application program.
For connection with a PC, an RS-232C communication cable is required.