For applications requiring ultra-close, center-to-center parameters, IDI has pioneered the way toward satisfying those specifications. IDI offers the following probes for testing on or below .030 (0.76)
Penta 0 -
centers - .015" (0.38)
Quad 00 - .020" (0.51) centers with receptacle
Quad 0 - .020" (0.51) centers - .030" (0.76) with receptacle
The Penta 0 and Quad 0 are available with wire attached or may be used with the corresponding receptacle.
When using the any of the Microseries probes without a receptacle, it is recommended that the probe be ordered with a preattached wire. All Microseries probe assemblies use soderex magnet wire. Soderex magnet wire is a resistance wire with a desirable thin insulation (polyurethane base insulation enamel). It can be stripped by one of several methods: abrasion, chemical or heat.
The Quad 0 probes have a 30 gage soderex wire preattached and the Penta 0 probe has a 36 gage soderex magnet wire. If the Microseries probes are to be used with a receptacle, the probe should be ordered without wire. The Quad 0 receptacle have a 26 gage soderex magnet wire preattached and the Penta 0 has a 33 gage soderex magnet wire. Standard wire length is 36" with a 1" strip. Specialized lengths and strips are available upon request.
Microseries Fixturing - Penta 0
This method features stepped holes to retain the Penta 0 probe in the fixture and a shear plate, which forces the probes to one side, providing sufficient friction to retain the probes.
Since the Penta 0 Receptacle does not have a flange on the top of the receptacle, the stepped holes are required to retain the receptacle.
Microseries Fixturing - Quad 00 and Quad 0
The Quad 0 probes have a flange at the top of the barrel for a stop. The Quad 00 probe must be used with a receptacle. Its receptacle also has a flange for a stop, as well as the Quad 0 receptacle.
An optional shear plate may be used to force the probes and receptacles to one side, providing enough friction to retain the probes in the fixture.