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375
Ludlum Measurements 375 User Manual
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LUDLUM MODELS 375 (INCLUDING SERIES ONE),
375/1, 375/2
AND 375/4
DIGIT
AL
W
ALL-MOUNT
AREA
MONIT
ORS
May 2017
Serial Number 278020 and Succeeding
Serial Numbers
2
Table of Contents
Default Chapter
4
Statement of Warranty
4
Table of Contents
6
Introduction
8
Models 375 (Including Series One), 375/1, 375/2 &
8
Getting Started
9
External Detector (Option)
9
Power up
9
Radiation Units
10
Checking Parameters
10
Model 375 Series One
11
Setting Alarm Points
11
Operational Check
12
Return for Repair and Calibration
13
Specifications
14
Operator Controls and Setup
17
Calibration Controls
17
Dipswitch (under Calibration Cover)
18
RS-232 Output
19
9-Pin Remote Data Connector
19
9-Pin Relays Connector
20
Typical Internal Detector Setups
20
Common Options and Modifications
22
Relay Options
22
Ethernet Interface Option
26
Time and Date Stamp Option
26
Printer DIP Switch Settings
27
Sigma Alarm Modification Option
28
To 20 Ma Isolated Output Driver Option
29
Safety Considerations
31
Environmental Conditions for Normal Use
31
Cleaning Instructions and Precautions
31
Warning Markings and Symbols
32
Electrical Safety Precautions
33
Replacement of Main Fuse
34
Models 375 (Including Series One), 375/1, 375/2 & 375/4
34
Detector Connector
34
Battery Replacement
34
Calibration
35
High Voltage
35
Calibration Parameters
35
Analog Output
36
Discriminator
36
Battery Charge
36
Recycling
37
Parts List
38
Model 375/2 Series One
38
Model 375/4 Series One
38
Wiring Diagram, Drawing 558 X 136
43
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Ludlum Measurements 375 Specifications
General
Brand
Ludlum Measurements
Model
375
Category
Measuring Instruments
Language
English
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