KLA-5 Automatic Freezing Point System

Test Method
Determines the temperature below which solid hydrocarbon crystals form in aviation fuels. The sample is cooled with continuous stirring in a Dewar-type sample tube until crystals appear.

Features and Benefits
• Conforms to ASTM D2386 and related specifications

• Direct cooling system eliminates the need for solvent cooling baths

• One-stage cooling system provides temperatures as low as –35°C and a two-stage cooling system down to –70°C

• Single start/stop push button makes system simple to use

• Minimal installation required to set-up software and instrumentation




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KLA-5 Automatic Freezing Point System
Freezing Point Detection–The freezing point detection system provides automated sample testing with the accuracy and repeatability in accordance with ASTM D2386 and related international test methods. The sample is cooled in the test chamber with constantly stirring. The sophisticated dynamic measurement system emits a light pulse every 0.5°C from a coaxial fiber optic cable positioned above the test sample. The light pulse is then reflected off the silvered-bottom test jar to an optical sensor. The advanced software package analyzes the response of the light pulse. The initial appearance of crystallization is monitored by light scattering. The sample is then warmed up, and the temperature at which the hydrocarbon crystals disappear is recorded as the freezing point. All clear and transparent fuels are readily measured by the detection system, regardless of sample color.

Advanced Software Package–The Windows®-based software package can control either a stand-alone system or provides multiple analyzer networking with a single network control station. All analytical parameters are graphed and displayed in real-time as well as recorded in Microsoft® Excel file format. The software monitors the operation and performance of all the analyzer components for proper data measurement, including the solenoid valves, cooling system, other moving parts, as well as the Pt-100 temperature probes and the pressure sensors. The calibration curves for each probes and sensors are displayed individually and saved to the hard disk with date and time of test.

Cooling System–For various user applications, the automated freezing point system is available with either one-stage cooling for temperatures as low as –35°C or two-stage cooling for temperatures as low as –70°C. The direct cooling system requires no solvent cooling bath and thus eliminates operator exposure to solvents used in standard cooling systems. The direct system is capable of rapid cooling, approaching –70°C bath temperatures in approximately 15 minutes, and utilizes less electricity than in standard cooling systems. The rapid cooling feature combined with a consistent cooling profile system provides repeatable results with high test reproducibility.

Multiple Configuration System–These automated sample cooling and physical property measurement systems can be configured with up to six test positions with one of five possible test heads at each position: cloud point, pour point, cloud & pour point, freezing point, and cold filter plugging point. Standard and customized multiple configuration systems are readily available. Please inquire with Koehler Customer Service about product specifications and ordering information.

PC Configuration– Operation of the software package requires the use of a PC, which should be ordered separately. Please inquire with Koehler Customer Service if assistance is needed in procuring a PC. The PC should have the following minimum requirements: Pentium III 800 MHz processor, 128 MB RAM, 2 GB hard drive, CD-ROM, Windows® 95/98 operating system, Microsoft® Excel, Windows® keyboard, monitor, mouse, graphic and video cards.

Specifications
Conforms to the freezing point specifications of:
ASTM D2386; IP 16; ISO 3013

Included Accessories
Internal built-in direct refrigeration system
One- or two-stage cooling system
Interface Cells
Operating Software
Acquisition Board
Cord Cable without plug
Interface Cables
Test Jars

Electrical Requirements
115V 60Hz, Single Phase
220V 50Hz, Single Phase

Dimensions lxwxh,in.(cm)
(for the KLA-5 system)
26x24x31.5 (66x60x80)
Net Weight: 132 lbs (60kg)

Ordering Information
Catalog
Number
Product Description
KLA-5
Automatic Freezing Point System (one-head unit)
Single stage (to -35
°C)
KLA-5/2
Automatic Freezing Point System (one-head unit)
Double stage (to -80
°C)
Please specify voltage and cooling requirements when ordering.

You may order a multiple configuration system (any combination
of freezing point, cloud and cloud/pour point, and cold filter plugging
point) with up to six heads. Please specify each measurement
head with its associated catalog number using the sequential
number combination. A two-headed freezing point system would
be KLA-55, a two-head cloud point and cloud/pour point system
would be a KLA-13, and a three-head cloud point, pour point and
freezing point system would be KLA-125.


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