YSI pHotoFlex STD Colorimeter - Manual (Page 68)

Technical data pHotoFlex
®
STD
68 ba76122e01 02/2013
7.2 Photometry
Applicable directives
and standards
EMC EC directive 89/336/EEC
EN 61326-1/A3:2003
FCC Class A
Meter safety EEC directive 73/23/EEC
EN 61010-1 :2001
UL3101-1
CAN/CSA-C22.2 No. 1010.1-92
Climatic class VDI/VDE 3540
IP protection class EN 60529:1991
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 reproduc-
ibility
0.005 or better
Photometric resolution 0.001
Warm-up time none
Measuring time approx. 2s
Measured parameters Concentration (method dependent, selectable display type), absor-
bance, transmission
Measuring range Absorbance: -0.200 ... +2.000
Transmission: 1 ... 150 %
User-defined programs 100
Resolution Transmis-
sion
1.00 ... 9.99 0.01 %
10.0 ... 150 0.1 %