User guide
               DM-534C Oxygen Sensor Assembly 
DM-534C O2 Sensor Instruction Manual          iii 
Table of Contents 
1.0
  DESCRIPTION........................................................................................................................................ 1 
1.1  Sensor Technology............................................................................................................................... 1 
1.2  Base Connector Board.......................................................................................................................... 2 
1.3  Explosion Proof Enclosure................................................................................................................... 2 
2.0  PRINCIPLE OF OPERATION.............................................................................................................. 3 
3.0  APPLICATION ....................................................................................................................................... 3 
3.1  Sensor Placement/Mounting................................................................................................................. 3 
3.2  Interference Data .................................................................................................................................. 4 
4.0  SPECIFICATIONS ................................................................................................................................. 4 
5.0  OPERATING SOFTWARE ................................................................................................................... 4 
5.1  Normal Operation................................................................................................................................. 5 
5.2  Calibration Mode.................................................................................................................................. 5 
5.3  Program Mode...................................................................................................................................... 5 
5.3.1  Program Status............................................................................................................................. 5 
5.3.2  Calibration Level Adjustment....................................................................................................... 5 
6.0  INSTALLATION..................................................................................................................................... 5 
6.1  Field Wiring Table (4-20 mA output) .................................................................................................. 5 
6.2  Sensor Location.................................................................................................................................... 6 
6.3  Local Electrical Codes.......................................................................................................................... 7 
6.4  Accessibility......................................................................................................................................... 7 
6.5  Installation Procedure........................................................................................................................... 7 
6.6  Remote Mounting Applications ........................................................................................................... 8 
7.0  START UP................................................................................................................................................ 9 
8.0  CALIBRATION..................................................................................................................................... 10 
8.1  Calibration Procedure - Span ............................................................................................................. 11 
8.2  Additional Notes................................................................................................................................. 12 
8.3  Calibration Frequency ........................................................................................................................ 12 
8.4  Calibration Gas Level......................................................................................................................... 12 
8.5  Status of Programming and Sensor Life............................................................................................. 13 
8.6  Program Features................................................................................................................................ 13 
8.7  Display Contrast Adjust ..................................................................................................................... 14 
9.0  TROUBLE SHOOTING....................................................................................................................... 15 
10.0  SPARE PARTS LIST............................................................................................................................ 16 
11.0  WARRANTY ......................................................................................................................................... 17 
12.0  SERVICE POLICY............................................................................................................................... 17 
Appendix C ....................................................................................................................................................... 18 
Revision History............................................................................................................................................. 18 
Table of Figures 
Figure 1 Construction of Galvanic Cell ............................................................................................................1 
Figure 2 Microprocessor Control Circuit ..........................................................................................................1 
Figure 3 Base connector board.......................................................................................................................... 2 










