NewLab 226 Low Temperature Flow Test
Standards
ASTM D4539
CE marked
Subject
This test method covers estimating the filterability of diesel fuels in some automotive equipment at low temperatures. The Low Temperature Flow Test results are indicative of the low temperature flow performance of the test fuel in some diesel vehicles. The test method is especially useful for the evaluation of fuels containing flow improver additives in a range of +10°C … -30°C.
Measuring LTFT principle
Up to 6 300 ml test vessels are cooled at a specified rate of 1°C/h and,at every °C of cooling, a vacuum of 20 kPa is applied to a filter assembly immersed in the first sample. If the sample recovered in a graduated receiver vessel reaches the 180 ml in 60 sec. the analysis continues to the further 1°C test temperature (passed). When the sample doesn’t reach the 180 ml within the 60 sec. the test is failed. The temperature of the last passing result test has to be recorded as minimum LTFT pass temperature.
The instrument is a six places floor model
Equipped with a built in cooling system with motor compressor CFC free for temperatures up to -45°C. Fully automatic, controlled by dedicated panel pc with touch screen and a large display. All the parameters and the current status of the analysis are shown in real time.
Measuring LTFT devices
Aspiration pipette
Filter assembly
Light barrier
Measuring temperature probe
Platinum resistance PT100 class A
Vacuum system
Micropump 350 kPa
Electronic control for vacuum regulation 20 kPa
Vacuum stabilizer
Measuring Parameters
Temperatures: in °C
Measuring range: +80°C…-80°C
Resolution: 0.06 °C
Accuracy: ± 0.1 °C
Repeatability / reproducibility as per standards methods or better
Software Features
User friendly interface
All analytical parameters recorded
Customisable analysis parameters and methods
Customizable results report
Printable graphs and results
The software includes:
Analysis Menu
Standard method as per ASTM D4539
Optional methods:
- T-sample, T-bath (Delta T constant)
- selectable cooling rate °C / h
- selectable bath steps temperature
- fast bath with selectable temperature
Audible alarm and displayed messages at the end of the analysis and in case of errors and/or malfunctions
The parameters displayed and updated in real time are:
- sample temperature
- bath temperature
- vacuum pressure
- level light value
- aspiration time
Thanks to an istogram (graph) that shows the aspiration times it is possible to observe the behaviour of the sample during its cooling phase
This feature is an excellent tools for the observation and evaluation of the additivations actions and behaviour
Diagnostic Menu
Direct access to all analog, digital, inputs and outputs
Selectable value displaying: °C / °F / Volt
Vacuum data displayed in mBars
Calibration Menu
Automatic calibration of each temperature probe
Automatic calibration of vacuum sensor
Last calibration date referred to each single probe displayed and relative data printable
Display of calibration diagram
Insertion of offset values
Standard and advanced calibration modes
Data Utilities
- Fields for
introduction of operator and product name - Archive viewer for files recall
- All analysis stored in Excel® compatible format
- Storage capacity for more than 60’000 analysis
- LIMS compatible
Integrated Touch Screen Panel PC
TFT/LCD 12"
Resolution 1024 × 768, 16.2 M colours
2 USB ports for connection to an external printer and/or external PC
Storage capacity for more than 60'000 analysis
Cooling System
Integrated gas CFC free motor compressors single stage (for temperatures up to -45°C)
Safety Devices
Pressure controller for 1st stage motor compressor
Thermo-switch for cooling / heating jacket
Motor compressors with internal overload devices
Electrical Supply
220V ± 15% / 50 to 60 Hz
115V ± 15% / 60 Hz
Cord Cable
3 conductors flexible cable 2 m (7 feet) length with PVC sheath oil and heat resistant as per CENELEC directives
Ambient Temperature
max 32 °C
H.R. 80%
Dimensions (cm)
widht 98
depht 60
height 130
Weight
80 kg
Spare Parts
LAB-220/005-03: heather + auto adhesive + insulation
LAB-220/005-04: thermo switch
LAB-220/005-06: PT100 bath
LAB-220/008-12: PT100 sample
LAB-220/007-02: static relay
LAB-220/007-04: PCB fuse 1 AT (box of 10 pcs)
LAB-220/006-01: cooling fluid valve + fitting
LAB-220/002-02: vacuum valve + fitting
LAB-220/007-01: main electronic board LTFT
LAB-220/008-04: 300 ml glass specimen vessel
LAB-220/008-05: 400 ml glass receiver vessel
LAB-220/009-07: rubber stopper for receiver
LAB-220/009-08: lid for specimen vessel
LAB-220/008-13: glass aspiration tubing "s"
LAB-220/008-14: glass receiver tubing "l"
LAB-220/008-15: glass vacuum tubing "xs"
LAB-220/008-18: joints vinyl tubes (pack of 12 pcs.)
LAB-220/013-01: filter assembly
LAB-220/013-02: filter
LAB-220/013-021: o-ring for filter
Calibration Tools
OilLab 80: calibration decade box PT100 simulator
OilLab 81: set of connectors and cables for cold range
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