wtw PhotoLab Spektral, Operating Instructions Manual

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19 Technical data
Optical measuring principle Single beam spectrophotometer;
Simultaneous recording of all wavelengths
Light source Tungsten halogen lamp, premounted
Operational lifetime: typical 500 operating hours
Dispersion element Aberration-corrected concave lattice
Receiver 256 x photo diode array
Wavelength
-range 330 nm to 850 nm
-accuracy
±
0.3 nm
-resolution 10 nm
-reproducibility
±
0.1 nm at an ambient temperature of
±
5 °C
Photometric
-reproducibility 0.001 A at 1.000 A
-resolution 0.001 A
Warm-up time Standard operation: 15 minutes
Kinetic measuring: 120 minutes recommended
Types of measurement Concentration (method dependent, selectable display form),
absorbance, transmission, color according to EN ISO 7880
Cell filling height minimum 20 mm
Measuring range of absorbance -0.300 A to 3.200 A
Balancing Permanently stored
Drift correction Automatic on each SelfCheck
Rest drift without drift correction typical 2 mA/h at 525 nm (without AutoCheck, constant am-
bient temperature, after 120 min warm-up time)
Retrofitting of new methods Via Internet or MemoChip
User-defined methods Max. 99
Calibration line Determination in user-defined methods
Kinetics Automatic measurement repetition with selectable interval
Spectrum Scaling automatic or freely selectable
Barcode recognition Automatic selection of the method
Automatic recognition of the reagents lot
Cell recognition automatic
SelfCheck Test:
Memory, optics, electronic measured value recording, bar-
code recognition, cell recognition
Automatic calibration:
Electronic measured value recording, barcode recognition,
rectangular cell recognition
Time/Date Real-time clock in the photometer
Dimensions H: 150 mm, D: 275 mm, W: 375 mm
Weight approx. 2.7 kg
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