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HYDROLYTIC STABILITY OF HYDRAULIC FLUIDS
SHEAR STABILITY TEST USING EUROPEAN DIESEL INJECTOR APPARATUS FOR POLYMER CONTAINING OILS – ASTM D-7109 / ASTM D 6278 / DIN 51382
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Model Code:SEWSS01 as per ASTM D 6278
SEWSS02 as per ASTM D 7109
The polymer containing fluid is passed through a diesel injector nozzle at a shear rate that causes the less shear stable polymer molecules to degrade. The resultant degradation reduces the kinematics viscosity of the fluid under test.
The permanent reduction in kinematics viscosity i.e. viscosity loss is a measure of the shear stability of the polymer containing fluid.
APPARATUS CONSIST OF :
| Fluid glass container /reservoir | Capacity of about 250 cm³ and is calibrated in 25 cm³ intervals. |
| Double-Plunger Injection Pump | 2-plunger pump is MICO-BOSCH make equivalent to PE2A 90C 300/3S 2266. |
| Electric Motor | 1.5kW output rated at 925 ± 25 rpm. |
| Atomization chamber | Spray chamber with tubing, pressure device, nozzle DN8S2-type with holder. |
| Control Panel | Digital temperature Indicator, Pre-settable Stroke Counter six digit display. Cabinet Sound absorbent powder coated cabinet. |
| Recommended Spares | Jet tester device consist of reciprocating pump, special jigs and fixtures. Atomization nozzles, Secondary sound absorbent cabinet. |