MERIDIAN
UNIVERSAL GAS DETECTOR
LIST OF FIGURES
ix
USE AND DISCLOSURE OF DATA
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prohibited.
List of Figures
Fig. #
Figure Title
Page #
3-1
3-4
4-1
Hard Wired Sensor Configurations - Typical
4-9
4-2
Examples of Remote Sensor Wire Length
4-11
4-3
4-13
4-4
Device Mounting Dimensions - Aluminum & Stainless Steel
4-15
4-5
Retrofit Mounting Plate Dimensions - Al
4-16
4-6
Retrofit Mounting Plate Dimensions - HDPE
4-17
4-7
4-19
4-8
Meridian Junction Box Assembly Wiring and Mounting – Aluminum
4-21
4-9
Meridian Junction Box Assembly Wiring and Mounting – Stainless Steel
4-22
4-10
Remotely Mounted Sensor with Calibration Fitting
4-23
4-11
Meridian Junction Box Assembly Spacer Usage
4-24
4-12
4-26
4-13
Attaching the Meridian Sensor to the Duct Mount Fitting
4-27
4-14
Connection for 3-Wire Sourcing
4-28
4-15
4-29
4-16
4-33
4-17
Connection for 4-Wire Sourcing with Isolated Loop Power Supply
4-35
4-18
Connection for 4-Wire Sinking with Isolated Loop Power Supply
4-36
4-19
Relay/Alarm Connection Example – Terminal/Relay/MODBUS PCB
4-38
4-20
Relays/Remote Alarm Reset Connections – Terminal/Relay/MODBUS PCB
4-38
4-21
MODBUS Connections – Terminal/Relay/MODBUS RS-485 PC
4-41
4-22
Optional Communication Expansion Card (CEC) PCB Connection
4-42
4-23
Meridian Detector Body Assembly Connection
4-44
4-24
Meridian Detector Body Assembly
4-46
5-1
Configuration Menu Structure – Sheet 1 of 2
5-3
5-2
Configuration Menu Structure – Sheet 2of 2
5-4
5-3
5-5