TS Absolute® Coaxial Dual Plunger Micro Pump - Details 1

What is “Coaxial Dual Plunger Pump” technology ?

TS Absolute has two pump heads.
Each pump head consists of the primary and secondary pumps combined together with different internal volumes and the coaxial plunger with different diametrical rods.

Automatic removal of bubbles and dissolved gas:

The miracle is worked by the integrated “GL SEP” (Gas-Liquid Separator) and heater coils.
The fluid discharged from the primary pump outlet flows through the precision in-line filter and is heated up by heater coils to get the dissolved gas saturated.
The gas, delivered to GL SEP together with liquid, will be separated and removed there.
GL SEP eliminates both air bubbles sucked from the outside and those generated within the pump.

Fluid with lower boiling point:

TS Absolute enables stable delivery of the fluid with lower boiling point like n-pentane, which has been difficult with conventional pumps.
The flow rate of the primary pump is higher than that of the secondary.
The differential pressure between two pumps is maintained with the integrated pressure-adjusting valve. This constant pressure is applied to GL SEP and also to the secondary pump inlet.
This pressure prevents the fluid from reaching the lower boiling point and provides stable running. Moreover, the pump can be restarted promptly, as the bubbles generated at the secondary pump will be dissolved in the fluid with the pressure loaded.

Compensation of fluid loss due to compressibility:

TS Absolute is equipped with a new function to compensate the fluid loss due to its compressibility according to individual fluids and suppress pulsation before running the pump. It eliminates pulsation troubles and contributes to stable baselines, which makes the pump suitable for high sensitive analyses. The conventional pumps compensate pulsations by feedback after the detection of pressure but it cannot cover the micro flow range, resulting in troubles.

Air Purge Valve:

The air purge valve is intended to remove manually air bubbles sucked or remained in the fittings and tubing before and during the run with ease.

Flow Diagram