
Sentinel C X T
Sentinel CXT Instruction Manual Rev. 1.7 iii
Table ofC ontents
1. Introduction............................................................................................................................................1
1.1 Features ..........................................................................................................................................................1
1.2 Optional Components.....................................................................................................................................3
1.3 Alarms and Fault Condition ...........................................................................................................................3
1.4 Power Supply-Internal Rechargeable Battery and Charging Accessory ........................................................4
1.5 LCD Main Display Function.......................................................................................................................... 5
1.6 Radio Module.................................................................................................................................................6
1.7 Sensor Inputs..................................................................................................................................................6
1.8 Alarm Outputs................................................................................................................................................8
1.9 Power Switch................................................................................................................................................ 11
1.10 Power Connector.......................................................................................................................................... 11
1.11 External Modbus Connector......................................................................................................................... 11
1.12 Data Logging SD Card................................................................................................................................. 12
1.13 Remote Alarm Reset/Acknowledge Switch .................................................................................................12
1.14 Remote I/O Cabling Accessory and Safe Use.............................................................................................. 12
2. Safety G uidelinesforSafe U se............................................................................................................13
3. Installation............................................................................................................................................15
3.1 Initial Setup ..................................................................................................................................................15
4. R echarging the Internal Battery Pack ...............................................................................................21
4.1 Non-Hazardous and Indoor Location........................................................................................................... 21
4.2 Connecting to Mains Supply........................................................................................................................ 21
5. System C onfiguration..........................................................................................................................21
5.1 System Operation ......................................................................................................................................... 21
5.2 Operator Interface.........................................................................................................................................21
5.2.1 Magnetic Programming Tool.................................................................................................21
5.2.2 Front Panel User Interface....................................................................................................22
5.3 Main Display Functions ............................................................................................................................... 23
5.3.1 Sensor Group.........................................................................................................................23
5.3.2 Transceiver Group.................................................................................................................23
5.3.3 YYY% - represents the link quality of the transceiver. Relay Module...................................23
5.3.4
ALM TEST = CXT Controller is in Alarm Test modeWireless Alarm Station/BM25.........23
5.4 Menu Mode .................................................................................................................................................. 24
5.4.1 Auto Configure System...........................................................................................................25
5.4.2 Set Channel Data...................................................................................................................26
5.4.3 Set Channel Alarms ...............................................................................................................28
5.4.4 Set Relay (Alarm) Functions..................................................................................................29
5.4.5 Inhibit and Alarm Test Mode.................................................................................................30
5.4.6 System Diagnostics................................................................................................................30
5.4.7 Time and Date........................................................................................................................31
5.4.8 View TWA and Peak ..............................................................................................................32
5.5 BM25 Portable Gas Monitor Configuration.................................................................................................32
5.6 Wireless Sensor Configuration.....................................................................................................................33
5.7 Four-Strobe Alarm Bar Configuration ......................................................................................................... 33
6. M aintenance and Service Personnel A ctivities..................................................................................34
6.1 Removal of SD Card ....................................................................................................................................34
6.2 Installation of SD Card.................................................................................................................................34
6.3 Replacement of Condensation Prevention Packet ........................................................................................ 35
6.4 Replacement of Lithium Ion Battery Pack (and Coin Cell)..........................................................................35
6.5 Proper Cleaning Procedure........................................................................................................................... 35
6.6 Servicing Risks and Verification of Safe State after Servicing.................................................................... 35
7. M odbus™Slave C om m unicationsPort.............................................................................................36