Labtech LT-4500 - Measurement Specifications

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.