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EQUIPMENT SEEN AT THE PHYSICAL SOCIETY EXHIBITION

EQUIPMENT SEEN AT THE PHYSICAL SOCIETY EXHIBITION Labgear Ltd., of Cambridge, exhibited a viscometer EQUIPMENT SEEN AT THE Timing Unit giving independent timing—in the model seen—for 8 tubes. We understand that this PHYSICAL SOCIETY EXHIBITION instrument has been developed in collaboration with the N.P.L. and is being used now for the calibration IT is understandable that the science of physics is of capillary viscometers. The time pulses are routed to-day associated in the public mind almost ex- through a control box with eight start/stop keys and clusively with its more spectacular achievements : re-set buttons. The 5-stage dekatron channels are atomic energy, space flight and the electronic 'brain'. driven from a common master (from the a.c. mains) Press, television, film and fiction have contributed to giving readings accurate to 0.01 of a second. (It is this mental attitude and, at first sight and sound, a no criticism of the instrument to mention that the visit to the 42nd Physical Society Exhibition at the greatest error in viscometry is that of temperature Royal Horticultural Hall, Westminster (March 24th— and accuracy of 0.1 sec. is normally ample). It 27th), appeared to confirm it. A little diligent search seemed obvious to your correspondent that the by your correspondent soon revealed tha t many other, apparatus could be developed to include automatic possibly more familiar, aspects were very ably pre- control and even a direct recording of viscosity and, sented. in conversation, it was learned that the provision of The Physical Society Colour Group had arranged proximity detectors on the tubes had already been for this year a number of examples demonstrating the envisaged. problems inherent in colour matching to a given Space does not permit more than the briefest men- standard. Specific materials, textiles, pigments, tion of a number of other exhibits of direct or indirect metal panels, etc., were used and many of the con- interest to manufacturers and users of lubricants. tributory factors, psychological and aesthetic, as well These include the latest De Noüy surface tension as purely physical, were illustrated in many novel balance (Cambridge Instrument Co.), a direct reading ways ; particularly that of colour memory in relation single-pan balance by J. W. Towers & Co. Ltd., a to colour matching. The exhibit recalled many power factor oil test cell by H. Tinsley & Co., and last practical problems associated with attempts to stand- but by no means least, the McArthur microscope. ardise the colour of both soaps and lubricating grease This latter instrument appeared to us to be the ulti- and the influence of texture on colour sensation. mate answer for a compact, almost automatic micro- Colour is a factor, albeit possibly a minor one, in the scope with which all normal measurements can be control of lubricant manufacture and the itinerary made with a minimum of skill and quite independently naturally included the stand of the General Electric of bench or absence of vibration. Although giving Co. Ltd., who showed a wide range of laboratory magnifications of 24X to 1500X, with automatic lamps including a newly-designed sodium lamp, and focussing even under oil immersion, its size is but the stand of the Tintometer Ltd., which besides ex- 4-in. x2½-in.x2-in. The built-in illuminator allows hibiting a new design of the well known Lovibond instantaneous exposure and the instrument was seen Schofield instrument, showed a series of industrial adapted to a small commercial camera. Your corres- colour standards for solids viewed by reflected light. pondent was shown perfect photo-micrographs which Excessive fuel dilution of the lubricating oil is un- had actually been taken on top of a London Transport doubtedly a contributory cause of wear and, there- bus as it made its shuddering and hesitant way along fore, any reliable and rapid method of test for fuel Oxford Street. Enquiries for this microscope should dilution, particularly in diesel engines, would be a be sent to Dr. John McArthur, 101 Chiltern Court, welcome addition to the equipment of the oil labor- N.W.1. E.G.E. atory. The Oil Dilution Meter developed by E . M. I . Electronics Ltd. operates on an entirely new principle. The oil sample (50 ml. in the prototype, 15 to 100 ml. being possible in future models) is electronically heated to 100°C and emulsified with low pressure steam. The more volatile components thus released (and presumably proportional to the content of fuel) are oxidised, after the steam supply is cut off, on the surface of a platinum wire. The excess heat, quanti- tatively related to the amount of material so reacted alters the electrical resistance of the wire and this, in turn, is read directly as percentage fuel dilution. An operator without any special skill can carry out tests at the rate of one every five minutes while the appar- atus is self-filling, emptying and cleaning. From the dimensions and weight (65 lb.) and the necessity of power supply, this is essentially a laboratory instru- ment and as such should be a time-saver where a large number of samples have to be tested. (Methods based purely on comparative viscosity appear to be better adapted to use on the individual vehicle and have indeed been successfully developed abroad). Scientific LUBRICATION 3 6 April, I958 http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Industrial Lubrication and Tribology Emerald Publishing

EQUIPMENT SEEN AT THE PHYSICAL SOCIETY EXHIBITION

E.G.E.,
Industrial Lubrication and Tribology , Volume 10 (4): 1 – Apr 1, 1958
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Publisher
Emerald Publishing
Copyright
Copyright © Emerald Group Publishing Limited
ISSN
0036-8792
DOI
10.1108/eb052517
Publisher site
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Abstract

Labgear Ltd., of Cambridge, exhibited a viscometer EQUIPMENT SEEN AT THE Timing Unit giving independent timing—in the model seen—for 8 tubes. We understand that this PHYSICAL SOCIETY EXHIBITION instrument has been developed in collaboration with the N.P.L. and is being used now for the calibration IT is understandable that the science of physics is of capillary viscometers. The time pulses are routed to-day associated in the public mind almost ex- through a control box with eight start/stop keys and clusively with its more spectacular achievements : re-set buttons. The 5-stage dekatron channels are atomic energy, space flight and the electronic 'brain'. driven from a common master (from the a.c. mains) Press, television, film and fiction have contributed to giving readings accurate to 0.01 of a second. (It is this mental attitude and, at first sight and sound, a no criticism of the instrument to mention that the visit to the 42nd Physical Society Exhibition at the greatest error in viscometry is that of temperature Royal Horticultural Hall, Westminster (March 24th— and accuracy of 0.1 sec. is normally ample). It 27th), appeared to confirm it. A little diligent search seemed obvious to your correspondent that the by your correspondent soon revealed tha t many other, apparatus could be developed to include automatic possibly more familiar, aspects were very ably pre- control and even a direct recording of viscosity and, sented. in conversation, it was learned that the provision of The Physical Society Colour Group had arranged proximity detectors on the tubes had already been for this year a number of examples demonstrating the envisaged. problems inherent in colour matching to a given Space does not permit more than the briefest men- standard. Specific materials, textiles, pigments, tion of a number of other exhibits of direct or indirect metal panels, etc., were used and many of the con- interest to manufacturers and users of lubricants. tributory factors, psychological and aesthetic, as well These include the latest De Noüy surface tension as purely physical, were illustrated in many novel balance (Cambridge Instrument Co.), a direct reading ways ; particularly that of colour memory in relation single-pan balance by J. W. Towers & Co. Ltd., a to colour matching. The exhibit recalled many power factor oil test cell by H. Tinsley & Co., and last practical problems associated with attempts to stand- but by no means least, the McArthur microscope. ardise the colour of both soaps and lubricating grease This latter instrument appeared to us to be the ulti- and the influence of texture on colour sensation. mate answer for a compact, almost automatic micro- Colour is a factor, albeit possibly a minor one, in the scope with which all normal measurements can be control of lubricant manufacture and the itinerary made with a minimum of skill and quite independently naturally included the stand of the General Electric of bench or absence of vibration. Although giving Co. Ltd., who showed a wide range of laboratory magnifications of 24X to 1500X, with automatic lamps including a newly-designed sodium lamp, and focussing even under oil immersion, its size is but the stand of the Tintometer Ltd., which besides ex- 4-in. x2½-in.x2-in. The built-in illuminator allows hibiting a new design of the well known Lovibond instantaneous exposure and the instrument was seen Schofield instrument, showed a series of industrial adapted to a small commercial camera. Your corres- colour standards for solids viewed by reflected light. pondent was shown perfect photo-micrographs which Excessive fuel dilution of the lubricating oil is un- had actually been taken on top of a London Transport doubtedly a contributory cause of wear and, there- bus as it made its shuddering and hesitant way along fore, any reliable and rapid method of test for fuel Oxford Street. Enquiries for this microscope should dilution, particularly in diesel engines, would be a be sent to Dr. John McArthur, 101 Chiltern Court, welcome addition to the equipment of the oil labor- N.W.1. E.G.E. atory. The Oil Dilution Meter developed by E . M. I . Electronics Ltd. operates on an entirely new principle. The oil sample (50 ml. in the prototype, 15 to 100 ml. being possible in future models) is electronically heated to 100°C and emulsified with low pressure steam. The more volatile components thus released (and presumably proportional to the content of fuel) are oxidised, after the steam supply is cut off, on the surface of a platinum wire. The excess heat, quanti- tatively related to the amount of material so reacted alters the electrical resistance of the wire and this, in turn, is read directly as percentage fuel dilution. An operator without any special skill can carry out tests at the rate of one every five minutes while the appar- atus is self-filling, emptying and cleaning. From the dimensions and weight (65 lb.) and the necessity of power supply, this is essentially a laboratory instru- ment and as such should be a time-saver where a large number of samples have to be tested. (Methods based purely on comparative viscosity appear to be better adapted to use on the individual vehicle and have indeed been successfully developed abroad). Scientific LUBRICATION 3 6 April, I958

Journal

Industrial Lubrication and Tribology – Emerald Publishing

Published: Apr 1, 1958

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