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LS-1866
Cosmo LS-1866 User Manual
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7 BA
SIC OPERA
TION
S
41
7.4.2
Settin
g test p
ressure
limit
s
The
in
itial sett
ing of t
he pre
ssure gau
ge
allow
s
pro
gram
m
ing
th
e comm
on
upper
and lower lim
its
for
a
ll
the
channels.
1)
Setting pr
ocedure
2)
Pressur
e limit s
et mode
Upper/lo
wer lim
it set in RU
N mode. D
isplay the
setting
condition
・
value in
Sub di
splay.
42
44
Table of Contents
Default Chapter
3
Table of Contents
3
Introduction
7
Safety Hints
7
Notes
8
General Information and Specifications
9
General Information
9
Features
9
Specifications
9
General Specifications
11
Test Pressure Gauge
11
Timer Setting
12
Leak Rate Limit
12
Model Classifications
12
Leak Testing Overview
13
Theory of Leak Test
13
Stage Summary
13
Internal Pressure Changes of the Tested Part and Master
14
Leak Rate Theory and Equations
14
Estimating the Test Timer
16
Feature Summaries
17
Master-Preset
17
Theory of Master-Preset
17
Master-Preset Operation
17
When to Execute a Master-Preset Process
18
Leak Calibration (Patented)
18
Two-Level Limit Setting and Noise Reduction (NR) Mode
19
Air-Operated Valve Performance and DPS Sensitivity Checks
19
Sensor Protection
20
Cleaning Pneumatic Circuit by Exhaust Air Blow (DL3)
20
External Exhaust Valve-Ready
20
CAL Ports
20
Clamp Output
21
Exhaust Interference Prevention
21
Installation
23
Installing the Unit
23
Using Quick Mounting Brackets (Standard)
23
Electrical Connection
25
Pneumatic Connection
26
Connection Ports
26
Pressure Sources
26
Notes on Source Air
27
Connecting Master and Tested Part
27
Notes on Designing a Sealing Fixture
27
Master Installation
29
Choosing Proper Connection to the Tested Part and the Master
30
Leak Tester Installation Environment
31
Procedure for Installation and Adjustment
32
Parts Identification and Functions
35
External Appearance
35
Indicators
36
Keyboard
37
Characters Appearing on the Digital Indicator
38
Leak Test Stages
39
Settings and LED Indications
40
Basic Operations
41
Turning on Power
41
Setting a Test Pressure
41
Test Pressure Gauge Upper and Lower Limit Setting
41
Names of Test Pressure Gauge Components (Low · Medium / Vacuum Pressure)
42
Output Mode
42
Setting Test Pressure Limits
43
Locking the Key of the Test Pressure Gauge
44
Zero Reset of the Test Pressure Gauge
44
Test Pressure Gauge Error Display
44
Names of Test Pressure Gauge Components (High Pressure)
45
Output Mode
45
Setting Test Pressure Limits
46
Locking the Key of the Test Pressure Gauge
47
Zero Reset of the Test Pressure Gauge
47
Unlocking the Keyboard
48
Switching Remote To/From Manual
48
Start and Stop
48
Switching Channels
48
Switching Modes
49
Measurement Mode
49
Viewing Differential Pressure Sensor (DPS) Offset
49
Viewing Raw Output of Detected Differential Pressure
50
Viewing
50
Entry
50
Limit Setting
51
Viewing
51
Entry
51
Limit Setting with NR (Noise Reduction) Is Activated
51
Two-Level Limit Setting
51
Unit Selection
52
Charge Hold
52
Compensation Mode (Master-Preset)
53
Sampling Master-Preset Value
53
Preparation
53
Sampling by Manual Operation
54
Sampling Externally through Control I/O Port
55
Error Message During Master-Preset Sampling
55
Calibration (Cal) Mode
57
Leak Calibration
57
Preparation
57
Sampling Drift Value
57
Leak Calibration Using a Leak Master
58
Leak Calibration Using a Volumetric-Variable Leak Calibrator
58
Go/No Go Judgement During Leak Calibration
59
DPS Span Inspection
60
Connecting a Pressure Calibrator
60
Changing Gain Coefficients
60
Leak Test
61
Leak Test under Atmospheric Pressure
61
Original (Org) Mode
63
ROM Version Information (P-1)
63
Memory Switch Settings (P-2)
63
How to Move to Memory Switch to be Set
63
How to Change Settings
63
Memory Switch Table
64
Initialization (P-3)
67
Channel Copy (P-4)
67
Manufacturer's Settings
67
Noise Reduction (NR) (P-5)
68
Serial Number Setting
68
1 Interface
69
Control I/O Port
69
Channel Selection
72
Stage Number Output
72
External Signal Timing Charts
73
Serial Communications Interface
74
Interface Specifications
74
Output Formats
79
Data Format
80
Checksum
82
2 Maintenance and Troubleshooting
83
Daily Items to Check and Maintain
83
Monthly Items to Check and Maintain
83
Annual or Semiannual Inspection Items
83
Error Messages
84
Errors and Treatment
84
E-3: Excessive Differential Pressure Sensor Zero-Point Shift
84
Improper Test Pressure
85
E-5: Air-Operated Valve Inactive
85
Pressurization Valve Error
85
Leak Test Troubleshooting
86
When No-Go Judgements Occur Consecutively
86
Locating Leaks in Places Other than the Leak Tester
87
3 Appendix
89
External Appearance
89
Pneumatic Circuit
90
Intelligent I Air Circuit Ls-1866
90
Pressure Unit Conversion Table
91
Flow Unit Conversion Table
91
CE Marking
91
Information to Users (FCC Rules)
92
4
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Cosmo LS-1866 Specifications
General
Brand
Cosmo
Model
LS-1866
Category
Test Equipment
Language
English
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