Firma:              Macherey u. Nagel

Modell:            Nanocolor 300D

Kommentar:   Dokumente engl.

Filter photometer NANOCOLOR® 300 D

The NANOCOLOR® 300 D is not only a high-performance filter photometer, it also features versatile software capabilities. With its arge reserves of light at all wave­lengths, the user can perform precise measurements, even at high extinctions.

Storage of all NANOCOLOR® analytical methods and multilingual user guidance facilitate measurement. Additional programmes such as measurement of extinction, kinetics, data networks, etc. expand the applicability beyond the NANOCOLOR® analytical system as an instrument which can be used in all types of application in the laboratory.

Additional features are: processing of non-linear curves, storage of measurement results, warning for values outside the measuring range, possibility of programming the user's own analytical procedures, etc.

Technical data

Single beam filter photometer for a wavelength range from 340 to 860 nm Silicon photo-element

Automatic zero adjustment

Display: 2 lines of 16 characters each, 8 mm high

Foil-covered keys with input verification

Cuvettes: rectangular cuvettes 10, 20 and 50 mm

round glass tubes 14 mm ID

Photometric accuracy: ± 1%

Long-term stability: < 0.002 E/h

Power requirements: 9 V, max. 0.7 A

Power consumption: 4 VA

Data interfaces: bidirectional RS 232 C interface

Centronics interface for a printer Dimensions: 210 x 260 x 95 mm

Weight:2.1 kg

1 display of method number

2 2-line display

3 20-part keyboard

4 plug-in slot for magnetic cards

5 cuvette slot with automatic cuvette identification

6 socket for connection of mains adaptor

7 plug-in slot for the PROM card

8 RS232 C interface

9 Centronics parallel interface

10 reset key

Digital display

An alphanumeric display serves for user guidance and results. lt contains two lines with 16 characters each. Height of characters is 8 mm.

Optical construction

light source      cuvette             filter      photo cell         Computer        display

Light source:   lamp, which emits light in the wavelength range 340 — 860 nm

Cuvette:           measurement vessel with the analysis sample

Interference     absorbs the entire spectrum of light except for the wavelength

filter:                 required for the analysis and reflects dispersed light and thermal radiation

Photo cell:        converts the light transmitted through the test sample into electric current

Computer:       converts the electric Signal into a digital reading using the charac­teristic data for the respective test

Display:            user guidance and display of results

Filters and filter wheel

As the tungsten lamp generates light within the spectral range of 340 - 860 nm, fil­ters are used which only transmit light of the wavelength, which is absorbed by the analysis sample. Light which is practically monochromatic can be attained with the interference filters used in the NANOCOLOR® 300 D. This quality of light ensures a high level of sensitivity and a greater accuracy in the analytical results. The increase in extinction per rise in concentration is also near the maximum value possible.

There are 10 filters fitted in a filter wheel with 12 slots. All of the NANOCOLOR® methods can be evaluated using these filters. The wheel also features two spare fil­ter slots in case the user needs to fit additional filters. Once the method is called up, the filter wheel automatically turns the required filter into the path of the beam.

If new methods are adopted, or if existing methods are modified, other filters can be incorporated into the measurement programme at any time.

Interference filters are heat-sensitive and are metal-coated towards the light source.

When the photometer NANOCOLOR® 300 D is switched on, it automatically per­forms a filter test. If a deviation is found, the programme asks for a new calibration. Filters which have left the confidence interval, are displayed as <error: filter> (filter change is necessary). In order to prevent wrong measurements, further evaluation of tests which require the defective filter is blocked.

^a Interference filters: ± 2 nm; ^b HW = band width at half transmission

^c coloured glass filter

Other interference filters are available on request.