XMTC User’s Manual
59
Appendix B. Typical Applications
Appendix B. Typical Applications
B.1 H
2
in N
2
in Heat Treat Furnace Atmospheres
The XMTC can be used to measure the concentration of hydrogen (H
2
) in nitrogen (N
2
) in a heat treat furnace
atmosphere.
B.1.1 Problem
Mixtures of H
2
and N
2
are used as controlled atmospheres in the heat treating of metals. These mixtures are
well-defined and need to be maintained in order to assure product quality and consistency. Dissociated ammonia is one
such atmosphere. Here, ammonia is broken down into free N
2
and H
2
in a 25 to 75% mixture.
B.1.2 Equipment
A typical instrumentation package includes a 2-port (Sealed Reference Gas - air) XMTC transmitter with a 4-20 mA
range of 0-25% H
2
mounted in a sample system similar to the one shown in
Figure 56
below. A display package is
often specified.
Figure 56: Sample System
INPUT
OUTLET
SAMPLE
OUTPUT
INLET
SPAN GAS
INLET
ZERO GAS
INLET
SAMPLE
N2
N1
N3
N4
Summary of Contents for XMTC
Page 1: ...GE Measurement Control Gas Analysis 910 217 Rev G October 2013 XMTC User s Manual ...
Page 2: ......
Page 4: ...ii no content intended for this page ...
Page 10: ...Contents viii XMTC User s Manual no content intended for this page ...
Page 18: ...Chapter 1 Features and Capabilities 8 XMTC User s Manual no content intended for this page ...
Page 58: ...Chapter 4 Calibration 48 XMTC User s Manual no content intended for this page ...
Page 62: ...Chapter 5 Specifications 52 XMTC User s Manual no content intended for this page ...
Page 68: ...Appendix A Supplemental Information 58 XMTC User s Manual no content intended for this page ...
Page 80: ...70 XMTC User s Manual no content intended for this page ...
Page 118: ...Index 108 XMTC User s Manual no content intended for this page ...
Page 120: ...Warranty 110 XMTC User s Manual no content intended for this page ...
Page 124: ... no content intended for this page ...
Page 125: ......