Teledyne 402REU - Hydrocarbon analyzer - Manual (Page 5)

v Teledyne Analytical Instruments
Total Hydrocarbon Analyzer Table of Contents
4.5 Activating the Support Gases ...................................... 4-4
4.5.1 Air ..................................................................... 4-4
4.5.2 Zero Gas .......................................................... 4-4
4.5.3 Span Gas ......................................................... 4-5
4.5.4 Fuel .................................................................. 4-6
4.6 Flame Ignition ............................................................. 4-6
4.6.1 Verification of the Flame Guard Circuit ............ 4-6
4.6.2 Ignition and/or Flame Guard Circuit Failure ..... 4-7
4.7 Calibration ................................................................... 4-7
4.8 Stabilization Period ..................................................... 4-8
4.9 Sampling ..................................................................... 4-8
4.10 Routine Operation ....................................................... 4-9
4.10.1 Verification of Calibration ................................. 4-9
4.10.2 Supporting Gases ........................................... 4-10
5 Maintenance & Troubleshooting
5.1 Measuring Circuit Electrical Checks ............................ 5-2
5.1.1 Loss of Zero Control ......................................... 5-3
5.1.2 Anode Voltage Check ....................................... 5-3
5.1.3 Electronic Stability ............................................ 5-4
5.1.4 Printed Circuit Board Replacement .................. 5-4
5.1.5 Collector Cable ................................................. 5-5
5.2 Temperature Control Electronic Check ...................... 5-5
5.3 Ignition and/or Flame Guard Circuit Checks ............... 5-8
5.3.1 Flame Guard Circuit Calibration ....................... 5-9
5.4 Sampling System ...................................................... 5-10
5.5 Printed Circuit Board Descriptions ............................ 5-10
5.5.1 Flame Guard and Anode Power Supply
Printed Circuit Board ...................................... 5-11
5.5.2 Regulated Differential Power Supply
Printed Circuit Board ...................................... 5-12
5.5.3 Proportional Temperature Controller
Printed Circuit Board ...................................... 5-13
5.5.4 Electrometer-Amplifier PC Board ................... 5-15
5.5.5 Comparator Alarm Printed Circuit Board ........ 5-17
Appendix
Specifications ...................................................................... A-1
Application Data .................................................................. A-2
Recommended Spare Parts List ......................................... A-3
Drawing List ........................................................................ A-4