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Table of Contents
Chapter 1
Model 120HD Hydrogen Analyzer
General Description ...........................................................................................1-1
Function ........................................................................................................1-1
Inspect Shipping Contents ...............................................................................1-2
Technical Support ...............................................................................................1-3
Installation ...........................................................................................................1-4
Mechanical Installation ...............................................................................1-4
Initial Attachment of Swagelok Sample Line Fittings .............................
1-4
Re-tightening Sample Line Connections .................................................
1-4
Repositioning the Gas Inlet/Outlet Connections ....................................
1-5
Checking for Leaks ......................................................................................1-5
Electrical Installation ...................................................................................1-6
Installing the Battery ..............................................................................
1-
6
Electrical Circuit ...........................................................................................1-8
Power Supplies ........................................................................................
1-8
Hydrogen Sensor .....................................................................................
1-8
Hydrogen Sensor Circuit ........................................................................
1-8
Digital Display ........................................................................................
1-8
Chapter 2
Specification
s
Operating Range .........................................................................................2-1
Accuracy ........................................................................................................2-1
Response Time .............................................................................................2-1
Repeatability .................................................................................................2-1
Environment ................................................................................................2-1
Sample Gas Flow Rate ................................................................................2-1
Sample Pressure ...........................................................................................2-1
Power Supply ...............................................................................................2-2
Battery Life (Approximate) ........................................................................2-2
Power Drain ..................................................................................................2-2
Weight ............................................................................................................2-2
Chapter 3
Operation
Initial Start-Up ....................................................................................................3-1
Current Adjustment ....................................................................................3-1
Low Battery Warning ..................................................................................3-1
Electrical Zero Adjustment .........................................................................3-2
Analyzing a Gas Sample ...................................................................................3-3
Taking a Reading .........................................................................................3-3
Recalibration .......................................................................................................3-4
Maintenance ........................................................................................................3-6
Battery ...........................................................................................................3-6
Repairs ...........................................................................................................3-6
