PureAire Monitoring Systems, Inc.
10/25/07
2
Table of Contents
1: Introduction........................................................................................................ 4
1.1 Component Identification .......................................................................... 5
1.1.1 Front Panel ....................................................................................... 6
1.1.2 Overall ............................................................................................. 6
1.1.3 Gas Sensor ....................................................................................... 6
2: Specifications ..................................................................................................... 7
2.1 Performance Specifications ....................................................................... 7
2.2 Gas Detection Systems .............................................................................. 7
2.3 Signal Outputs ........................................................................................... 7
2.4 Electrical Requirements ............................................................................. 7
2.5 Physical Characteristics ............................................................................. 7
2.6 Safety Characteristics ................................................................................ 8
3: Installation ......................................................................................................... 9
3.1 Mounting.................................................................................................... 9
3.2 Electrical .................................................................................................... 9
3.3 Optional Outputs ...................................................................................... 10
3.3.1 Isolated 4-20 mA ........................................................................... 10
3.3.2 Modbus RS-485 Serial ................................................................... 11
3.3.3 Alarm Relays ................................................................................. 12
4: Normal Operation ............................................................................................ 13
4.1 Power Up Delay ....................................................................................... 13
4.1.1 Sensor Poisoning..................................................................... 13
4.2 Concentration Display ............................................................................. 13
4.3 Analog Output ......................................................................................... 13
4.4 Fault Alarm .............................................................................................. 13
4.5 Concentration Alarms .............................................................................. 13
4.6 Alarm Reset ............................................................................................. 14
4.7 Loss of Power Indication ......................................................................... 14
4.8 Routine Maintenance Schedule ............................................................... 15
4.8.1 Routine Visual Checks .................................................................. 15
4.8.2 Recommended Routine Maintenance Schedule ............................ 15
5: Maintenance & Calibration .............................................................................. 16
5.1 Sensor Calibration ................................................................................... 16
5.1.1 Optional Calibration Equipment .................................................... 16
5.1.2 Entering the Calibration Mode ...................................................... 16
5.1.3 Zero Calibration ............................................................................. 16
5.1.4 Span Calibration direct from cylinder gas .................................... 17
5.1.5 Displaying Zero/Gain Settings ...................................................... 18
6: Diagrams & Schematics .................................................................................. 19
6.1 Dimensional Drawing .............................................................................. 19
