Prostat PRF-930, Руководство пользователя

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I. Introduction & Description
The PRF-930 Powder Resistance Fixture measures the
bulk resistance of powder and granulated materials.
Test material is placed in the cavity between the mea-
surement plates. Once a measurement has been made
in ohms, a fixture calculation, or correction factor, con-
verts the resistance measurement to volume resistivity
in ohm-cm. The PRF-930 provides the most accurate
measurements when used with a precision wide range
resistance instrument, such as the Prostat PRS-801
Resistance System, or equivalent laboratory system.
For guarded plate measurements use an instrument
ground reference.
The PRF-930 Powder Fixture meets requirements of “Technical Recommendations of National Institute
of Occupational Safety and Health JNIOSH-TR-No. 42 (2007) Recommendations for Requirements for
Avoiding Electrostatic Hazards in Industry 2007”
II. Fixture Component Descriptions
A. Acrylic Frame
An electrically insulative acrylic frame provides structural support and precise positioning of the
two measurement plates.
MATERIAL TEST CAVITY
POWER PLATE
(Test Voltage)
MEASUREMENT PLATE
(Current Sensing)
ACRYLIC FRAME
Figure 20: Prostat PRF-930 Powder Resistance Fix-
ture Set
5
Rev. A / January 2010
PRF-930 Advanced Powder Fixture