EDS3-61H Datasheet, PDF (1/4 Pages) Fuji Electric – THERMAL CONDUCTIVITY GAS ANALYZER THERMOMAT

THERMAL CONDUCTIVITY GAS ANALYZER THERMOMAT
DATA SHEET
ZAF
In modern industries, it is indispensable to analyze
components and measure concentrations of mixture gases
and combustion gases for strict quality control and to file data
for establishing production schedules which will allow proper
management of industrial processes.
Of the various analytical methods and measuring prin-
ciples available for analyzing process gases, this gas analyzer
utilizes the fact that electric resistance of a heated platinum
wire changes depending on kind and concentration of gas.
Kind of Gas
Sulfurdioxide SO2
Carbondioxide CO2
Argon Ar
Carbon monoxide CO
Water vapor(100°C)H2O
Air
Nitrogen N2
Oxygen O2
Methane CH4
Hydrogen H2
Relative thermal conductivity
(at 0°C)expressed taking that
of air(5.572 × 10^-5cal/cm.sec.
deg.)as 1
FEATURES
1. Continuous measurement possible.
2. Quick response.
3. Integral unit incorporating detector, current regulator and
indicator.
4. Simple and robust mechanism assuring high maintainabil-
ity.
5. Minimum influence due to external and operating condi-
tions.
6. Stable accuracy.
SPECIFICATIONS
Measuring principle:
Measurement of thermal conductivity
Measuring component:
Two-component gases (from viewpoint of
thermal conductivity)
such as CO2, H2, Ar, CH4, He, SF6
Measuring mode:
1 range or 2 ranges (for measuring the same
sample gas components with the same
measuring system)
Measuring range:
CO2
0 to 10 ....100
100 to 90 .... 0
H2
0 to 3 ....100
100 to 95 .... 0
Ar
0 to 10 ....100
100 to 90 .... 0
CH4
0 to 20 ....100
100 to 80 .... 0
He
0 to 5 ....100
100 to 90 .... 0
Output signal: DC 4 to 20 mA
(load resistance less
than 400Ω)
DC 0 to 10mV
} Simultaneously
available
(output resistance 100Ω)
[ ] 0 to 100µA (load resistance 100Ω) is
further available for special specification.
Repeatability:
Drift:
± 1% of F.S.
Within zero point ± 2.5% of full scale/week
Within span ± 2% of full scale/week
EDS3-61h
Date Jun. 27, 2002