Product category:
Machine Building Components
News Release from: Tecstream OMG | Subject: Metering/dosing systems
Edited by the Engineeringtalk Editorial
Team on 07 September 2000
Dosing systems repeatability better than
+/-0.1%
Tecstream OMG is supplying metering/dosing systems for single or multiple product additives to achieve a wide range of chemical properties where final product quality and consistency is important
Precision dosing, where measured liquid volumes are added to batch or in-line processing operations is the speciality of Tecstream OMG Ltd They design and supply metering/dosing systems for single or multiple product additives to achieve a wide range of chemical properties for many modern production plants where final product quality and consistency is of paramount importance
This article was originally published on Engineeringtalk on 3 Jul 2001 at 8.00am (UK)
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Typical applications include dosing of performance/protective additives into chemical and petrochemical products; chemicals into water and effluent treatment plants; flavouring and colours into food and confectionery and dehydrates and corrosion inhibitors into gas transmission lines, etc.
High accuracy and control, even down to ppm proportional values can be achieved, whether additives are being added to larger volumes held in mixing or holding tanks, or injected into pipelines subject to continuous flow conditions.
Dose repeatability of better than +/- 0.1% is claimed, with controllability and adjustment being either manual or automatic without the need to shut-down the processing operation.
Pumphead capacities range from as little as 100cc/hour up to 40,000 litres/hour with maximum discharge pressures of 1000 barG.
Pumphead designs include hydraulically activated diaphragm with a double diaphragm version generally used for pumping hazardous and harmful chemicals where inter diaphragm leak detection is provided.
A plunger type pump is specified for general duties and includes a double acting position type for high capacities.
A mechanically operated inlet/outlet valve type is also available for pumping solids in suspension as would typically occur with fruit solids in syrup.
Automatic control and capacity variation is by pneumatic or electrical positioner each providing closed loop feedback, while automatic setting from plant plc and personnel computers enables positive totalisation of pumped volumes.
Pumphead construction materials range from 316 stainless steel as standard with hastolloy, PVC, PTFE and ceramics also being used, providing excellent chemical compatibility for a wide range of products.
Up to twenty pumpheads per machine with groupable multiplex units incorporating different series pumps can be supplied to cover the most demanding application requirements.
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