PC BASED OPTI-CHROMIC READER SYSTEM
Model FWT-200S Opti-Chromic Reader System offers a state of the
art performance for both high and low volume users of Opti-Chromic
Dosimeters. This reader is fast, accurate and above all easy to
The system consists of a reader head, ISA interface card that plugs
into the inside of your PC and assorted programs. The interface
card and cable are the same as used with the Model FWT-100 Radiachromic
Reader Head, but each system uses different software.
The addition of the computer to the measurement cycle reduces the
complexity of the system. The computer does all the calculations
necessary not only to take a reading but also to reduce the data
and store it for later reference or reporting. It assists the user
by performing the following tasks:
The computer will set the zero at the users request.
Data reduction: The computer will accept the user calibration data
and report the calculated dose using all necessary parameters.
Beginning with version 2.0 the software is compatible with Win 95/98/ME/2000/XP.
The windows version of the software is a dynamic data exchange (DDE)
server. It provides information on the absorbance readings for both
the 600 nm and the 656 nm analysis wavelengths to DDE client programs
such as Microsoft Excel or Access. A sample Excel spreadsheet is
included to illustrate how data may be accessed by Excel's DDE functions.
Due to the critical timing needed to measure absorbance it is best
if the DDE server and client are the only programs running on the
The Opti-Chromic head has a holder located under a cover. Place
the dosimeter in the holder and close the lid. The computer will
signal when the reading is complete.
0.001 to 2.60.
Select: 600 nm or 656 nm.
Wavelength: 750 nm
Warm Up Time:
Precision: ±0.003 OD @ 0.000 to 1.000 OD; ±1% of reading
@ 1.000 to 1.999 OD;± 2% of reading @ 2.00 to 3.00 OD
600 nm: 10.1 nm ± 1.5 nm; 656 nm: 11.5 nm ± 1.5 nm,
750 nm: 13.4 nm ± 1.5 nm
W x 18 D x 8 H cm (8 x 7 x 3.2 in)
Model FWT-200 Head, Model FWT-300 ISA Interface Card, Cable and
Neutral Density Filter Set: FWT-160 (Certified) Other wavelengths
Radiachromic Head to convert system to FWT-100S.
consult the factory for other changes or modifications.