Environmentally-friendly melt pressure transducers
A
Magna Projects and Instruments product story
Edited by the Engineeringtalk editorial team
Jan 8, 2002
The Series 2000 range of Melt Pressure Transducers avoids the need for the traditional transmission-liquid filling of mercury or sodium-potassium, which can lead to product contamination
The Series 2000 range of Melt Pressure Transducers is now available from Magna Projects and Instruments' On-Line Shop at www.magna-projects.com.
The patented design allows accurate pressure readings to be made in processes such as plastics extrusion and mixing, without the need for the traditional transmission-liquid filling of mercury or sodium-potassium, which can lead to product contamination if these transducers break.
As well as being suitable for general use, the Series 2000 is an attractive choice for sensitive applications such as pharmaceuticals, film, medical product production, food manufacture and for energetic materials.
They may be operated via an intrinsically safe barrier for hazardous-area use.
The wetted parts are of stainless steel, with a Di-Hard corrosion and abrasion-resistant tip on the standard transducers.
For more demanding applications, coatings of Titanium Nitride and Hastelloy are available.
Additionally, an integral Type J or Type K thermocouple can be provided.
Manufactured under licence by Terwin Instruments, Series 2000 transducers are available in four stem lengths of 92.5mm (3.6"), 152.5mm (6"), 228.6mm (9") and 305mm (12"), are supplied as standard with the industry-standard 1/2"-UNF-2A mounting thread (although others such as M18 are offered), will operate at temperatures up to 450 degrees Celsius and are supplied in pressure ranges up to 2,100 bars (30,000 psi).
Their accuracy is better than +/-0.5% and reproducibility within +/-0.1% of full scale output.
They are electrically compatible with common alternatives, combine advanced strain gauge and materials technology, and are fitted as standard with a precision calibration resistor which provides an accurate output of 80% of the full scale range when switched into circuit.
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