Ludlum Measurements 3100, Manual

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1-1
CHAPTER 1
GENERAL INFORMATION AND SAFETY PRECAUTIONS
1.1 SAFETY CONSIDERATIONS.
There are certain things to consider in order to safely operate the Model
3100 and avoid damaging the instrument and/or causing personal injury. See Safety Summary before the Table of
Contents for some general warnings and instructions.
1.1.1 Baseline Conditions.
a
.
Indoor or outdoor use.
b. Temperature range of 32°F to 122°F (0°C to 50°C).
c. Relative humidity (RH) of 40% to 90%.
d. Pollution Degree 3 (Defined by IEC 644. See Table 1-1.), typical of industrial and construction sites.
1.1.2 Avoid Contact With Hazardous Live Parts.
Normal operation of the instrument should always be
performed with the instrument front panel attached to the instrument can assembly. The operator is warned to take
the following precautions to avoid contact with internal hazardous live parts, should it be determined that the chassis
needs to be separated from the instrument case.
a. Turn the instrument power OFF, disconnect the power cord, and remove the batteries.
b. Allow the instrument to sit for one minute before accessing internal components.
1.1.3 Keep Out of Water.
This instrument meets the standards as specified by MIL-STD-810G Method 506
procedures I & III for moisture exposure, but it is not waterproof and should never be immersed in or used in
standing water. See Table 1-1 for specifics.
It is recommended that after operating in a wet or humid environment and the instrument has persistent readings
above zero, the instrument be run in SAMPLE or PURGE mode (with AC power) with the desiccant switch set to
in-line to ensure the air in the system is dry.
1.2 INTRODUCTION .
This Technical Manual is applicable only to the Model 3100 (Figures 1-1 and 1-2),
including the case (see Figures 1-3 and 1-4) and related accessories. This Technical manual contains specifications,
descriptions of instrument operation and use, and procedures for user maintenance.
Figure 1-1.
Model
3100