Borderline Pumping Temperature Tester – ASTM D4684 Engine Oil Low-Temperature Flow Analyzer

Borderline pumping temperature tester compliant with ASTM D4684 for evaluating low-temperature flow properties of engine oils under simulated winter conditions.

This instrument is used to measure the boundary pumping temperature, (low temperature) yield stress and apparent viscosity of motor vehicle engine oil. The test temperature control range is wide from 80 to -40 ℃ . The test process is all controlled automatically by computer.

Technical Parameter

1.  Applicable standards: ASTM D3829, ASTM D4684

2.  Refrigeration method: compressor refrigeration

3.  Working temperature: 80～-40℃

4.  Temperature control accuracy: ±0.02℃

5.  Temperature control method: program temperature control

6.  Heating method: electric heating tube heating

7.  Detection method: photocell detection

8.  Control method: computer automatic control

9.  Work unit: 5 units

10.  Power of the whole machine: 1200KW

11.  Net weight: 20KG

12.  Size: 470*320*420mm

Borderline Pumping Temperature Testers (ASTM D4684) must replicate MRV protocol with ±0.1°C thermal control and real-time viscosity monitoring. Used by lubricant formulators to ensure engine oils remain pumpable below –30°C. Choose suppliers providing NIST-traceable calibration, software for yield stress calculation, and compliance with latest ASTM revisions. Avoid outdated simulators lacking automated cooling ramps—manual methods introduce significant error. Essential for R&D labs supporting automotive or heavy-duty engine approvals. (for reference only)

Due to market conditions, product updates, and policy changes, please contact the supplier for the latest information.