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Oldham iTrans User Manual
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iTrans Fixed Point Single/Dual Gas Monitor
Hardware Overview
(P/N: 77023554-1)
iTrans User Manua
l
2-1
H
ARDW
ARE
O
VE
RVIEW
C
h
a
p
t
e
r
2
2.1.
Main Electron
ics Unit (Housing)
The
body is
a
cast
aluminum housing
that
contains
the electronics
of the
gas monitor. D
et
ails of a s
ingle
-gas housing are s
hown in
Figure
2-
1.
NOTE: Dimensions are in inches.
Figure 2-1. Deta
ils of a Sin
g
le-Gas
Gas Monitor
14
16
Table of Contents
Default Chapter
1
Analog Outputs
1
Table of Contents
5
Chapter 1: Introduction
7
Overview of the Gas Monitor
7
Specifications
7
Agency Approvals - CSA
9
Special Instructions for Safe Use (EU)
12
Chapter 2: Hardware Overview
15
Main Electronics Unit (Housing)
15
Sensor
16
Display
17
Inputs - Intrusive and Non-Intrusive
17
Electronics Modules
18
Chapter 3: Installation
21
Introduction
21
Installation Considerations
21
Wall Mounting
21
Column Mounting
21
Chapter 4: System Wiring
23
Introduction
23
Wiring Preparation
23
Alarm Relay Wiring (J1, J5, and J6)
24
Power and Output Wiring (J1)
25
Sensor Wiring (J3)
26
Digital Modbus RTU Interface Wiring (J1)
32
Modbus Interface Wiring Overview
32
Setting the Modbus Address on the
32
Setting the Modbus Address for Stand-Alone Sensors
33
Wiring Conclusion
35
Chapter 5: Operation
37
Initial Start-Up
37
Warm-Up Period
37
Normal Operating Mode
38
Programming Mode Overview
39
Programming Mode - Non-Intrusive Operation
40
Introduction
40
Sensor Type
41
Zeroing
41
Calibration
42
Changing Span Gas Concentration
43
Sensor Span Reserve
44
Programming Mode - Push Button Operation
44
Introduction
44
Entering Programming Mode and Selecting a Channel
45
Set Low Alarm
45
Set High Alarm
46
Ma Analog Output Range
46
Set System Time - Minute
47
Set System Time - Hour
48
Set System Time - Date
48
Set System Time - Month
49
Set System Time - Year
49
Zeroing
49
Calibration
50
Changing Span Gas Concentration
51
Sensor Span Reserve
52
Special Notes on Using Broadband Infrared (BBIR) Sensors
52
Chapter 6: Modbus Interface
55
Introduction
55
Sample Gas Reading Via Modbus Network
55
Modbus Register List
56
Modbus Resources
60
Termination
61
Chapter 7: Maintenance
63
Introduction
63
Sensor Replacement
64
Zero and Calibration
64
Chapter 8: Troubleshooting
65
Introduction
65
Diagnosing Common Problems
65
Fault Codes
66
Function Codes
67
Chapter 9: Warranty
69
Warranty
69
Limitation of Liability
69
Appendix A: Acronyms and Abbreviations
71
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Oldham iTrans Specifications
General
Brand
Oldham
Model
iTrans
Category
Measuring Instruments
Language
English
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