
iv | Model 241CE II Hydrocarbon Dewpoint Analyzer
Highest Measurable Dewpoint..................................................................................... 2-3
Environmental................................................................................................................. 2-4
Humidity.................................................................................................................... 2-4
Maximum Altitude ................................................................................................... 2-4
Cooling Capability .......................................................................................................... 2-4
Minimum Clearances ..................................................................................................... 2-4
Dry Gas Supply (Purge Air)........................................................................................... 2-5
Approvals and Certifications......................................................................................... 2-5
ATEX and IECEx Certificates and Analyzer Markings.............................................. 2-6
CSA Certificate and Analyzer Marking ..................................................................... 2-14
CHAPTER 3 INSTALLATION AND START-UP................................................................... 3-1
Safety Considerations..................................................................................................... 3-2
Pre-Installation Requirements....................................................................................... 3-2
Storage Prior to Installation .................................................................................... 3-2
Uncrating and Inspecting the Analyzer................................................................ 3-3
General Installation Information ........................................................................... 3-4
Tools, Equipment, and Supplies Required ........................................................... 3-4
Installing the Mechanical Components....................................................................... 3-6
Installing the Analyzer............................................................................................. 3-6
Location and Environment...................................................................................3-6
Installing the Heatsink/Measuring Cell Assembly ..............................................3-9
Installing the Sample System.............................................................................3-11
Sample System Prerequisites .......................................................................3-12
Installing the Sample Probe.........................................................................3-13
Installing the Sample and Vent Lines ..........................................................3-14
Installing and Connecting the Purge Gas Line..................................................3-16
Checking the Fuses ....................................................................................................... 3-17
Connecting the I/O Signals, Alarm Relay Contacts, and AC Power ..................... 3-18
Analog Input Terminals......................................................................................... 3-19
Analog Output Terminals...................................................................................... 3-20
Alarm Relay Terminals........................................................................................... 3-22
Configuring the Hardware for Digital Communication.................................. 3-23
Digital Communication Protocol .......................................................................3-25
AC Power Connections.......................................................................................... 3-26
North American Installation ..............................................................................3-27
European Installation.........................................................................................3-27
Start-Up and Verification ............................................................................................. 3-28
Powering Up the Model 241CE II Analyzer ....................................................... 3-28
Displayed Signals (RUN Menu Scroll Sequence – Quick Reference)................3-29
About the Measuring Cycle................................................................................3-30
Purging/Hold Stage .....................................................................................3-31
Cooling Stage...............................................................................................3-33
Warming Stage ............................................................................................3-35
Sample System Leak Check .................................................................................. 3-36
Adjusting the Sample Gas Flow Rate.................................................................. 3-38