Metrohm 844 UV/VIS Compact IC - Manual (Page 104)

Table of contents
5 Appendix
5.1 Technical data
Unless otherwise specified, the published data
comprises typical values for the 844 UV/VIS Compact IC
at an ambient temperature of 25 °C.
5.1.1 UV/VIS Detector
Measuring range
Absorption -2.0 ... 2.0 AU
Number of channels 3 absorption channels + 1 ratio channel
Resolution 2.5 * 10-7 AU
Noise 2.5 * 10-5 AU (data rate 1/s))
Drift
at reference conditions 5 * 10-4 AU/h
Wavelength range
Wavelength range λ 190...900 nm
Bunching Δλ 1...limit nm (limit is 2 times the difference bet-
ween the wavelength of the measuring channel
and the nearer wavelength border (190 resp. 900
nm). Δλ is always odd.)
Accuracy absolute +/- 3 nm
Stability +/- 1 nm
Optical resolution 5 nm
Measuring interval
Data rate for each channel 0.5 ... 20 samples/sec
Analog output
Voltage range -1.0 ... 1.0 V
Resolution 30 μV
Noise <30 μV
Lamps
UV lamp
Type
Power
consumption
Lifetime
D
2 (Deuterium)
approx. 20 ... 30 W
approx. 1000 h
VIS lamp
Type
Power
consumption
Lifetime
Halogen
approx. 5 W
approx. 10'000 h