The Tinker & Rasor Model AP/W
Holiday Detector supplies a range of output voltages suitable
for the inspection of almost all protective coatings including thin film
epoxies, vinyls, polyethylenes, etc. and thicker coatings such as hot
applied coal tar, asphalt and heavy mastic materials. It is adaptable
for use on both large and small diameter pipe as well as flat surfaces
when such surfaces are coated with a high electrical resistant material
and the surface beneath the coating is electrically conductive. It
operates well on damp surfaces, so is desirable where humid conditions
prevail.
Interchangeable PowerPak plug-in pulse transformers each
develop six fixed output voltages, which are selected through externally
mounted switch. The PowerPaks becomes an integral part of the wand
assembly and can be interchanged in a matter of seconds.
Power to the instrument is furnished
by a sealed, rechargeable, nickel cadmium battery which requires NO
maintenance other than recharging. A single charge is suitable for a
full day's work.
Weighing only eight pounds, the
detector can be comfortably belt-mounted or carried by the handle. When
faults or foreign particles in the protective coating are encountered by
the inspection electrode, a distinctive audible signal heard.
Typical applications are checking
coatings on pipelines (internal & external), tanks, concrete, sewers,
and manholes.
Description
Full Circle Spring Electrode for any one pipe
diameter between 2" and 36"
