10/24-4.10 EN Rev. 9 EasyLine EL3000 Series Data Sheet 13
Thermal conductivity analyzer Caldos27
Dynamic response
Warm-up time
Approx. 30 minutes
90% response time
T
90
≤ 2 sec at sample gas flow of 60 l/h and electronic
T90 time (static/dynamic) = 0 / 0 sec
Calibration
Zero-point calibration
With test gas, measurement component-free process gas or
substitute gas
End-point calibration
With test gas, process gas having a known sample gas
concentration or substitute gas
Single-point calibration
A single-point calibration can be performed with standard
gas, since the zero- and end-points will not drift independ-
ently due to the sensor principle employed. This technique
leaves out safety-related measurements. Depending on the
measurement task involved, the zero- and end-points should
be verified periodically (recommendation: once a year).
Materials in contact with the sample medium
Analyzer
Sample chamber (direct connection): stainless steel 1.4305
(SAE 303); sensor: gold, silicon oxi-nitride; seal: FFKM75
(Perfluoro rubber)
Gas connectors of the solenoid valve (option in model EL3020)
PVDF
Gas inlet conditions
The analyzer must not be used for measurement of ignitable
gas/air or gas/oxygen mixtures.
Temperature
+5 to +50 °C
The sample gas dew point should be at least 5 °C below the
temperature throughout the sample gas path. Otherwise a
sample gas cooler or condensate trap is required. Water
vapor content variations cause volume errors.
Inlet pressure
p
e
= 2–100 hPa
Lower pressures require a sample gas pump and higher
pressures require a pressure reducer.
Outlet pressure
Atmospheric pressure
Flow rate
Normally 10–90 l/h, minimum 1 l/h
Pressure drop
< 2 hPa at 60 l/h N
2
Corrosive gases
Consultation with ABB Analytical is required if the sample gas
contains Cl
2
, HCl, HF, SO
2
, NH
3
, H
2
S or other corrosive
components.
Flammable gases
The analyzer is suitable for measuring flammable gases in
general purpose environment (see page 16).
Gas connec
tions
See page 25
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