Both the Canadian Freeness Tester and the Schopper-Riegler Tester are used to determine the rate of drainage of a diluted pulp suspension, the rate of drainage being related to the work done on the fibre during beating or refining. Refining of pulps is one of the most important stages in the paper production process and it strongly influences sheet forming and its physical properties.
Canadian Freeness Tester
This instrument consists of a drainage chamber, equipped with a calibrated screen-plate, and measuring funnel that has two orifices separated by a specified distance. The orifice at the base of the funnel governs the rate of discharge and the run-off water, which is captured and measured with the measuring cylinder to determine the freeness value.The CSF also comprises an aluminium frame for wall mounting, a nickel-plated bronze drainage chamber, a funnel, spreader cone and sealing cone. It is supplied with two graduated measuring cups. |
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Schopper-Riegler Tester
This instrument is essentially the same as the CSF except for the used pulp samples, which have a lower concentration. The scale is reversed in comparison with the amount of water collected.The Schopper Riegler is a stainless steel structure, steel base, large precision circular level, leveling feet, chrome plated bronze drainage chamber, funnel, spreader cone and sealing cone, plexiglass safety guard and a handle for the drainage chamber. The pneumatic components are ISO standard and there is a hook spanner and fixing base for easy exchange of the phosphor bronze screen.
Optional Accessories:
- Digital Drainage Device for instant and accurate readings
- Quick Drain Device enables quick and complete removal of the fibre layer from the drainage chamber
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Features
- Applicable to all kinds of pulps in aqueous suspension
- Reliable robustness and precision instruments
- Non-corrosive components
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Canadian Freeness Tester |
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Schopper-Riegler Tester |
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| Physical specifications |
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Dimensions 25 x 27.5 x 60 cm (W x D x H)
Net weight 33 kg |
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Dimensions 33 x 47 x 1440 cm (W x D x H)
Net weight 25 kg |
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| Options |
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• Spare standard 1000 ml measuring cup, graduated in both Schopper-Riegler and ml scales
• Supporting structure for table mounting |
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• Spare standard 1000 ml measuring cup, graduated in both Schopper-Riegler and ml scales
• Spare standard measuring phosphor bronze wire screen
• Wall mounting compressed air regulator and filter |
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| Performance data |
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• Flow of calibrated bottom orifice 530 ± 5 ml/min
• Calibrated bottom orifice 74.7 ± 0.7 s for 1l of H2O
• Drainage chamber volume 1000 ml
• Drainage area 100 cm2
• Manual operation |
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• Speed of the sealing cone: 100 ± 10 mm/s
• Calibrated bottom orifice: 149.0 ± 1.0 s for 1l of H2O
• Drainage chamber volume: 1000 ml
• Drainage area: 100 cm2
• Pneumatic drive: 2.0 kgf/cm2
• Measuring scales: 0 to 100 SR units/1000 to 0 ml
• Resolution: 1 °SR
• Air supply: 2 kgf/cm2, instrument quality
• Air consumption: 0.1 m3/h |
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| Standards |
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ISO 5267/1, ZM V/7/61, SCAN C19 M3 |
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ISO 5267/1 |
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| Consumables |
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Click here for details
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For more information, please contact our Sales Team on 01223 492081 or via sales@tendringpacific.com
