Used Wentworth MP 926

Manual Probe Station

Price depends upon objectives, probes, etc.

The Wentworth MP-926 is a manual probe station that accepts wafers up to 6 inches in diameter. It features a rugged and stable cast aluminum base. It also has a generous platen work area for mounting manipulators. It is a "chuck above platen" probe station design. The MP 926 will be sold with either a Mitutoyo FS-60 or FS-70 Microscope.

The Mitutoyo FS-60 and FS-70 Series are microscope units designed to be installed in defect analysis probes and have the following features:

Mitutoyo Specifications

TMC Isolation Table

The MP 926 is set up on a Technical Manufacturing Corp (TMC) Micro-g 63-500 Series high-performance lab table. These provide an excellent vibration-free working surface for loads up to 350 lbs (160 kg). Now with modular construction, these tables are recommended for use in such diverse applications as: electrophysiology, cell injection, ultramicrotomy, photomicroscopy, scanning tunnel microscopy and confocal laser scanning microscopy.

TMC Gimbal Piston Isolators

Our Patented Gimbal Piston isolator has been proven by independent tests to consistently outperform the competition. It achieves both horizontal and vertical isolation down to very low input levels.

Thin-Wall Rolling Diaphragms

An integral part of the Gimbal Piston, the thin-wall, dacron-reinforced, rolling diaphragm air seals are only 0.020 in. (0.5 mm) thick, and extremely flexible. They do not stiffen the spring as thicker rubber diaphragms do.

All-Brass Height Control Valves

All systems are equipped with rugged all-brass height control valves. Virtually unbreakable, they are finger adjustable with no need for tools. The Standard Model maintains height to ± 0.050 in. (±1 mm); the Precision Model, to ±0.005 in. (±0.1 mm).

Internal Piston Travel Restraint

Unique in the industry, TMC provides husky, tamper proof, built-in piston travel restraints. The restraints are completely independent of the table valves, and have been ram-tested at forces above those produced by the pistons operating at full pressure. They cannot be decoupled accidentally and do not interfere with setting up and using the table, but simply protect against overtravel, without the use of external bars that create hazardous pinch points. Heavy loads, including the top plate, can be safely removed from a table in full operation.

Tie bar Gussets

Exclusive TMC tie bar gussets increase table frame rigidity. They compensate for the elimination of the front tie bar in order to provide knee well space.

Rugged Built-in Leveling Feet

Table legs include built-in fine-thread 3 in. (75 mm) diameter screw jack levelers with 1/2 in. (13 mm) travel, provision for external adjustment and a handy adjustment wrench. The base is a solid, slightly domed shape to assure solid, wobble-free contact with sloping or irregular floors.

Superior Table Tops

Our standard laminated tops provide an attractive stainless steel ferromagnetic working surface with highly damped, high stiffness construction at low cost. For applications requiring the ultimate stiffness and damping, or mounting holes, specify our patented CleanTop II honeycomb top.

Table Specifications

• Isolator natural frequency:
  High Input Specifications
  Vertical natural frequency 1.0 Hz
  Horizontal natural frequency 1.2 Hz
  Low Input Specifications
  Vertical natural frequency 1.5-1.9 Hz
  Horizontal natural frequency 1.7-2.2
• Isolation efficiency @ 5 Hz: Vertical: 60 - 95%
  Horizontal: 30 - 80%
• Isolation efficiency @ 10 Hz : Vertical: 80 - 97%
  Horizontal: 60 - 94%
• Gross load Capacity: 1,400 lbs. (640kg)
  Net load Capacity: 350 lbs. (160kg)
• Finish: Medium texture black powder coat frame; stainless steel top.
  Facilities required: 80 psi nitrogen or air