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The term “viscosity” is a parameter that describes a fluids resistance to flow. This resistance is a measure of the friction and the forces of interaction between the layers of a fluid. This friction is apparent when one layer of fluid is made to move against another The greater the friction, the greater the amount of force required to cause the movement – known as “shear”.
The process of flow through an orifice can often be used as a relative measurement and classification of viscosity. This measured kinematic viscosity is generally expressed in seconds of flow time which can be converted into centistokes (cSt) using a viscosity calculator.
Manufactured from high grade aluminium alloy with stainless steel orifices (where indicated), the Rhopoint Flow Cups are available with a range of UKAS / ISO 17025 certified standard oils to confirm the flow cup is measuring within specification.
| Instrument Information | ||
|---|---|---|
| Material | High grade aluminium alloy, stainless steel orifice | |
| Commodity Code | 9027 8091 | |
| Weight | 200 - 300g (depending on model) | |
| Product | Order code | Orifice diameter | Viscosity range | Flow times | |||||
|---|---|---|---|---|---|---|---|---|---|
| Flow Cups to BS EN ISO 2431, ASTM D5125 | RL-A-FC-ISO3 | 3mm (0.12”) | 7 - 42cSt | 30s - 100s | ||||
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| Flow Cups to BS EN ISO 2431, ASTM D5125 | RL-A-FC-ISO4 | 4mm (0.16”) | 35 - 135cSt | 30s - 100s | ||||
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| Flow Cups to BS EN ISO 2431, ASTM D5125 | RL-A-FC-ISO5 | 5mm (0.20”) | 91 - 325cSt | 30s - 100s | ||||
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| Flow Cups to BS EN ISO 2431, ASTM D5125 | RL-A-FC-ISO6 | 6mm (0.24”) | 188 - 684cSt | 30s - 100s | ||||
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| Flow Cups to BS EN ISO 2431, ASTM D5125 | RL-A-FC-ISO8 | 8mm (0.31”) | 600 - 2000cSt | 30s - 100s | ||||
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| The orifices are manufactured from stainless steel. | ||||||||
Selecting the correct angle for the application will optimise measurement accuracy. Three types of instruments are available on the market: 60° single angle instruments, a
The diagram above shows the same coating applied to two panels, the first has orange peel/waviness present due to the incorrect application setting on the
Please note, this is NOT a quotation, just a confirmation of the price when purchased in the UK exclusive of VAT/duties
