XMTC User’s Manual 61
Appendix B. Typical Applications
B.1.4 Permanent Installation
Continuous monitoring of the furnace atmosphere H
2
content using the XMTC assures a high degree of quality control
in the manufacturing process.
B.1.5 Specifications
Typical Ranges:
0 to 10% H
2
in N
2
0 to 25% H
2
in N
2
0 to 100% H
2
in N
2
Operating Conditions:
Pressure: Ambient
Temperature: +540 to +1370
o
C (+1000 to +2500
o
F)
B.1.6 Detailed Operating Procedure
The following procedure details the start-up, operation, and calibration of the 2-port (Sealed Reference Gas) XMTC
sample system for heat treat furnace applications shown in Figure 56 on page 59.
Needle valves N1 through N4 on the sample system drawing have the following functions:
• N1 – selects/isolates the process sample gas
• N2 – selects/isolates the calibration zero gas
• N3 – selects/isolates the calibration span gas
• N4 – controls the flow of the selected gas