31 August 2011
Torque wrenches are used by factory staff, installers and field based personnel working on the cable connections and sub assemblies around the magnet when it is energised. They are also used around the top of the magnet on the refrigeration sub assemblies, valves and seals. In both cases the magnet is at full field. Norbar’s Philip Brodey explains: "These magnets can be 'switched off' by removing the permanent current flowing in the coils but this is costly, time consuming and dangerous. Sometimes this action can trigger a spontaneous quench, instantaneously boiling off 75% of the liquid helium present, which can cost anything up to £10,000 to recover from. Working with non-magnetic tools is essential for anyone working on 'live' systems, especially at the critical and risky 'ramping up' and 'ramping down' process when you bring a magnet to field." The new Norbar TruTorque™ 50 N.m Non-magnetic wrench is acceptable for the majority of MRI scanners in use today and has further applications across a range of industries where tools also have to be used in the presence of a strong magnetic field, such as:Clean RoomsRadar Transmission CentresPrecision Magnetic EquipmentPermanent Magnetic GeneratorsNuclear productsMine SweepersNorbar TruTorque™ Non-magnetic Torque Wrenches are manufactured using carefully selected and tested non-ferrous materials. Accuracy of reading is +/- 3%, exceeding international standards. For further information about Norbar products and services, contact:Norbar Torque Tools Ltd, Beaumont Road, Banbury, Oxfordshire OX16 1XJT01295 270333 http://sales@norbar.com
Torque wrenches are used by factory staff, installers and field based personnel working on the cable connections and sub assemblies around the magnet when it is energised. They are also used around the top of the magnet on the refrigeration sub assemblies, valves and seals. In both cases the magnet is at full field.
Norbar’s Philip Brodey explains: "These magnets can be 'switched off' by removing the permanent current flowing in the coils but this is costly, time consuming and dangerous. Sometimes this action can trigger a spontaneous quench, instantaneously boiling off 75% of the liquid helium present, which can cost anything up to £10,000 to recover from. Working with non-magnetic tools is essential for anyone working on 'live' systems, especially at the critical and risky 'ramping up' and 'ramping down' process when you bring a magnet to field."
The new Norbar TruTorque™ 50 N.m Non-magnetic wrench is acceptable for the majority of MRI scanners in use today and has further applications across a range of industries where tools also have to be used in the presence of a strong magnetic field, such as:
Norbar TruTorque™ Non-magnetic Torque Wrenches are manufactured using carefully selected and tested non-ferrous materials. Accuracy of reading is +/- 3%, exceeding international standards.
For further information about Norbar products and services, contact:
Norbar Torque Tools Ltd, Beaumont Road, Banbury, Oxfordshire OX16 1XJ
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