Large Bench Unit
Bespoke MPI Bench Unit
The LBU is a bespoke large bench unit for performing MPI. The LBU includes AC current flow and magnet flow (FWDC) energising modes as standard with optional HWDC and FWDC current flows modes available.
The LBU is built around a sturdy RHS frame which includes an inking hose and under unit ink reservoir to allow for ink to be reused. The variable position head-stock can be moved via a front mounted wheel and pneumatically clamp using a foot peddle to grip components between the U8 type Copper gauze contact pads - The diameter of the contact pads can be made to requirement. The LBU is supplied with heavy duty energising foot pedal(s) and fully calibrated with the relevant paperwork as standard.
Johnson & Allen MPI Bench Units are built around one of three control systems - The Manual System, Start System and the Plato II System.
The Plato II System is highly recommended for LBU builds.
|Manual System||Start System||Plato II System|
|Manual Current Regulation||✔||✔||✔|
|Automatic Current Regulation||✔||✔|
Button Press Mode Change Over
|Programmable Job Routines||✔|
UV Inspection Booth
For fluorescent MPI processes the LBU can include a bespoke UV Inspection Booth to reduce ambient light below the 20 Lux demanded by most MPI standards. UV Inspection Booths are usually free standing and fitted with both UV lights and white lights to give adequate background UV light when inspecting with the option of white light for safely loading components and maintenance.
UV Inspection Booths are built around a sturdy steel frame and panelled with either a PVC canvas or steel sheet. Most UV Inspection Booths also incorporate a number of fans to remove heat and prevent build-up of chemical vapours within the booth. Component doors are also common and can be either manual or pneumatically operated.
The LBU can be supplied with a wide range of accessories including threading bars, rigid fixed coils, headstock mounted ‘V’ brackets, mini-jigs and hand-held UV Inspection Lights to aid in inspection processes.
Quality UK Construction
Johnson & Allen pride itself on high quality design and construction which is why the power transformers and coils used in the LBU are wound, built and extensively tested in-house before they are installed. All Johnson & Allen bench units are designed and manufactured by our experienced team in Sheffield.
|Energising Modes||AC (Standard)
Mag. Flow (Standard)
|Current Flow Output||0 - 10,000A RMS AC|
|Mag. Flow Output||33,000 Amp Turns|
|Max. Component Length||Bespoke|
Talk To Our Team
As with all bespoke builds Johnson & Allen recommend customers contact our technical sales department to discuss their precise needs first. Our experienced team can recommend the most economical way to achieve customer requirements.