4. Instrument Features
40
4.4.2
Measurement Specifications
PARAMETERS
CHARACTERISTICS
Measurement time:
single wavelength
dual wavelength
< 15 seconds
< 20 seconds
Wavelength range:
Standard
400 - 750 nm
Measurement range:
400 - 750 nm
0 - 4.000 OD
Resolution:
0.0001 OD
Accuracy: 450, 492 nm
0.000 - 2.000 OD
2.000 - 3.000 OD
≤
(1.0 % + 0.010 OD)*
≤
(1.5 % + 0.010 OD)*
Precision: 450, 492 nm
0.000 - 2.000 OD
2.000 - 3.000 OD
≤
(0.5 % + 0.005 OD)*
≤
(1.0 % + 0.005 OD)*
Linearity: 450, 492 nm
0.000 - 2.000 OD
2.000 - 3.000 OD
≤
1 %
≤
1.5 %
Wavelength selection:
Standard filter
Narrow bandwidth interference
filters. Up to 8 filters can be
mounted in a filter wheel.
Filter wavelength accuracy:
Central wavelength ± 2 nm
Filter bandwidth:
At 50 % transmission
10 ± 2 nm
Light source:
LED
Computer interface:
USB port
USB 1.1 / 2.0
All connected devices must be approved and listed as per IEC 60950-1
Information Technology Equipment – Safety and equivalent local standards.
* better than or equal to x % of measurement value plus corresponding OD value.
