
5
Rev. 2 / 3-18-2019
PRF-922B Miniature Two-Point Probe Set
A. Use of Measurement Power Supply
1. The PRF-922B is a high performance micro probed designed for use with a maximum input
voltage of 100 volts. As such, it is capable of delivering an annoying shock to any person touch-
ing the spring-loaded contacts when they are energized.
a. If used with the Prostat PRS-801 Resistance System, the current capability of the micro
probe instrument combinaon is limited to a very low, typically harmless level. However, a
disnct hazard exists in the operator’s reacon to a possible shock.
b. To avoid shock, operang personnel should not touch the electrodes, or any exposed me-
tallic parts of the PRF-922B fixture or cable assembly when power is applied to the probe.
CAUTION
To avoid electrical shock, Do Not Touch the fixture test electrodes, test bed, or exposed
metal BNC connecons when power is being applied to the probe.
c. The designed operang voltage limit for normal auding and laboratory measurements is
100 volts. Exceeding 100 volts greatly increases the risk of personnel shock hazards.
WARNING
Never exceed the maximum applied operang test voltage of 100 volts
d. Only qualified instrument repair and test personnel should exceed the 100-volt opera-
on limit, and then do so only under controlled condiƟons using maximum precauƟons
against personnel shock.
e. Never, under any condions, exceed 500 volts during fixture test or repair.
B. Other Operaonal Precauons
1. Do Not Use the PRF-922B Micro Probe if it fails to funcon during its connuity inspecon test.
2. Do Not Use the PRF-922B Micro Probe if it becomes damaged in any way
3. Only Prostat Corporaon authorized, qualified repair personnel may open PRF-922B or PRV-
913B housing, terminal assemblies, or perform product repair. Unauthorized opening of fixture
or instrument housings, device tampering, or aempted repair will absolutely void product
warranty and completely absolve Prostat Corporaon, its employees, suppliers and representa-
ves of any responsibility, liability, or other, whatsoever.
WARNING
Unauthorized opening of fixture or instrument housings, device tampering, or aempted re-
pair will absolutely void product warranty and completely absolve Prostat Corporaon of any
responsibility, liability, or other, whatsoever.
4. Do Not Touch Electrode Surfaces. Electrodes will become contaminated with skin oils and
salts, and may become damaged or rendered inaccurate.