GE XMTC User Manual

Appendix B. Typical Applications
64 XMTC User’s Manual
B.2 H
2
Purity in H
2
-Cooled Electricity Generator
The XMTC can be used to measure the purity of hydrogen (H
2
) in hydrogen-cooled electricity generators used in the
power industry.
B.2.1 Problem
H
2
is used as a cooling medium in electricity generators because of its high thermal conductivity. If air leaks into the
H
2
, the mixture can become explosive.
B.2.2 Equipment
A typical instrumentation package includes a 4-port (Flowing Reference Gas - hydrogen), explosion-proof XMTC
transmitter with a 4-20 mA range of 80 to 100% H
2
mounted in a sample system similar to the one shown in Figure 58
below. An XDP display package is often specified.
Figure 58: Sample System (732-028)
REFERENCE
SAMPLE
OUTLET
INLET
SAMPLE
REFERENCE
GAS INLET
GAS OUTLET
ZERO GAS
INLET
N1
N2
N3
N4
9.00
(229.5)
(MIN)
TRANSMITTER

GE XMTC Specifications

General

Brand	GE
Model	XMTC
Category	Transmitter
Language	English