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14C
LUDLUM 14C User Manual
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Model 14C Survey Meter
Ludlum Measuremen
ts, Inc.
Page
13
July 2022
N
o
t
e
:
Nev
er
st
ore
th
e
in
strum
ent
ov
er
30
day
s
wit
hou
t
remo
ving
the
batt
eries
.
Altho
ugh
th
is
ins
trum
ent
wil
l
ope
rat
e
at
ve
ry high
ambi
ent
te
mp
erat
ures
,
batt
ery
se
al fail
ure may occur
at
temp
eratur
es as
low
as
38
°C (
100
°
F).
16
18
Table of Contents
Table of Contents
3
Introduction
5
Getting Started
6
Unpacking and Repacking
6
Battery Installation
6
Connecting a Detector to the Instrument
7
Battery Test
7
Instrument Test
7
Reading the Meter-Face Dial
7
Operational Check
10
Specifications
11
Identification of Controls and Functions
12
Safety Considerations
13
Environmental Conditions for Normal Use
13
Warning Markings and Symbols
13
Cleaning and Maintenance Precautions
14
Calibration and Maintenance
15
Calibration
15
Establishing an Operating Point
15
Setting Overload
16
Range Calibration
16
Maintenance
16
Recalibration
16
Batteries
16
Troubleshooting
18
Troubleshooting Electronics Which Utilize a GM Detector or Scintillator
18
Troubleshooting GM Detectors
20
Troubleshooting Scintillators
20
Technical Theory of Operation
21
Recycling
23
Parts List
24
Model 14C Survey Meter
24
Main Board, Drawing 464 × 454
24
HV Power Supply Board, Drawing 464 × 302
26
Wiring Diagram, Drawing 464 × 175
27
Drawings and Diagrams
29
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LUDLUM 14C Specifications
General
Brand
LUDLUM
Model
14C
Category
Measuring Instruments
Language
English
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