YSI pHotoFlex pH Handheld Colorimeter - Manual (Page 87)

pHotoFlex
®
pH Technical data
87 ba76123e01 02/2013
7.2 Photometry
Optical measuring prin-
ciple
LED photometer with filter
Interference filter 436 nm, 517 nm, 557 nm, 594 nm, 610 nm, 690 nm
Accuracy: ± 2 nm
Photometric
reproducibility
0.005 or better
Photometric resolution 0.001
Warm-up time none
Measuring time approx. 2s
Measured parameters Concentration (method dependent, selectable display form),
absorbance, transmission
Measuring range Absorbance: -0.200 ... +2.000
Transmission: 1 ... 150 %
User-defined programs 100
Resolution
Transmission
1.00 ... 9.99 0,01 %
10.0 ... 150 ± 0.1