 The Tinker & Rasor Model CPV-4 Cathodic Protection Voltmeter is
a revolutionary instrument for measuring DC structure to earth potentials of various
buried or submerged metallic objects. Powered by an ordinary 9-volt battery, the Model
CPV-4 gives an immediate reading in large ˝ inch (12.7mm.) liquid crystal display
numerals.
The large scale integrated circuit has a built-in filter to
reject AC interference. Input resistance of 11 megohms (11 million ohms) yields
potentiometer quality voltage readings, and digital readout eliminates interpolation of
voltages. This small, lightweight instrument needs no warm-up time, is insensitive to
temperature, and can be read in direct sunlight. Low current CMOS circuitry assures long
battery life, and the die-cast metal case makes the CPV- 4 a durable instrument for the
field.
Study the features and specs and see how they combine to
make the Tinker & Rasor CPV- 4 the most accurate and reliable cathodic protection
voltmeter ever afforded. |
