K-Patents PR-23 for K-Patents - Manual (Page 20)

Document/Revision No. IM-GB-PR23-ACP: Rev. 1.0 Effective: December 15, 2011
20
Appendix to the Instructions Manual PR-23
3.2 Laboratory Test Cuvette: Static sampling
The Laboratory Test Cuvette (LTC) for static sampling has a sample chamber accommodating
a mixer. The LTC mixer has a 12 VDC geared electrical motor that rotates the PVDF mixer
paddle via a magnetic link. Magnetic drive is used for ease of cleaning and reliability. The LTC
mixer is supplied with a 100-240 VAC universal power supply equipped with a plug which has
interchangeable connecting prongs.
The LTC sample chamber consists of two main components, an inner sample chamber
and a cooling/heating jacket. Temperature regulated fluid flows through the water jacket to
circulate around the sample chamber and refractometer sensor head. This system avoids
any contamination of the sample by the temperature regulating fluid. There are machined
fins around the outside of the Sample chamber to facilitate effective thermal transfer
between the fluid in the water jacket and the liquid sample. There is also a compression
spring to keep the sample chamber tight to the sensor head.
3.3 Assembly of Laboratory Test Cuvette:
Static sampling
To assemble the test cuvette first locate the 2x2 EPDM O-ring into the groove in the top
aperture of the outer casing (Figure 3.1). Then insert the narrow top of the static sampling
chamber through the compression spring. Then insert the sample chamber and spring into
the outer casing from the bottom, inserting the top end of the sample chamber through the
top aperture of the outer casing. Finally place the 20.2x3 EPDM O-ring into the bottom of the
sample chamber ready for mounting on the Refractometer PR-23-AC Sensor.
1 2
Outer casing
Static sampling
chamber
Compression
spring
O-ring
21x2 EPDM
O-ring
20.2x3 EPDM
Temperature control
fluid - inlet
Temperature control
fluid - outlet
Grove for
O-ring
Figure 3.1 K-Patents Laboratory Cuvette LTC for Static sampling: Components and assembly of
sample chamber.