Telephone :
Telefax :
E-mail :
Internet :
LFE GmbH & Co.KG
Process Analytical Instrumentation
Am Germanenring 54
D-63486 Bruchköbel / Germany
+49 - (0)6181 - 49 53 02
+49 - (0)6181 - 49 38 07
[email protected]
www.lfe.de
CONTHOS 3-PMD
Paramagnetic Process Gas Analyzer
Application Questionnaire
The following questionnaire can help to define the analysis boundary conditions for the implementation of an LFE
CONTHOS for oxygen analysis.
Contact details
Company:
E-mail:
Name:
Phone:
Dept.:
Fax:
Address:
Type of sample gas / application
Biogas
Metallurgy
Chemical
other:
Gas production
Synthesis gas
Petrochemical
Installation site
Installation site
Indoor
Ambient temperature at location
Hazardous area
min.:
Outdoor
°C
norm.:
Ex zone 1
°C
max.:
Ex zone 2
°C
Ex free
Gas composition and characteristics
Please list all relevant gases. Please be sure to list O2 or air if it can also be present in the sample gas during
measuring operation.
Component
min.
(vol.%)
normal
(vol.%)
max.
(vol.%)
Analyzer range if measured component
( for potential use in dynamic
interference correction)
1.
2.
3.
4.
5.
6.
7.
8.
9.
10.
Corrosive or toxic components
(e.g. SO3, HF, Cl2, HCl, H2S, NH3 or HCN, COCl2)
min
Sample gas dew point
max
units
°C
Sample gas pressure
Sample gas temperature
LFE GmbH & Co.KG
°C
CONTHOS 3-PMD
Application Questionnaire
81916611
31.07.17
Page 2 of 3
CONTHOS analyzer version
CONTHOS 3E PMD
CONTHOS 3F PMD
Housing version
Sample gas
connectors
19” rack housing
Field housing
for tubing 6mm
for tubing 6mm
for tubing ¼"
for tubing ¼"
NPT-¼" female
for tubing 6mm
Housing purge
connectors
for tubing ¼"
Power supply
Standard: 100-240VAC, 50-60Hz
Desired CONTHOS analyzer range(s)
Begin of range
Units
(vol.% or ppm)
End of range
Range 1
to
O2
Range 2
to
O2
Range 3
to
O2
lowest range: 0 - 1% O2
largest range: 0 - 100% O2
Interface options
Digital I/O expansion
8 optically isolated digital inputs
7 floating relay contacts
Serial interface
RS485 with Modbus RTU
Note: The digital I/O module cannot be used in conjunction with the optional serial interface module.
Comments
LFE GmbH & Co.KG
CONTHOS 3-PMD
Application Questionnaire
81916611
31.07.17
Page 3 of 3
Technical prerequisites
This questionnaire assumes as a prerequisite that the sample gas and conditions presented to the CONTHOS
fulfill the following:

The customer must ensure that the sample gas is dry and free of particulates and aggressive
components before entering the analyzer. That means an adequate sample handling system is
in place.

The sample gas dew point should at minimum be 10°C below ambient temperature to avoid
condensation in the gas lines.

The sample flow rate is between 30 - 60 l/h for optimum performance (min. 3 l/h, max. 120 l/h).

The sample gas pressure does not exceed max. 300 mbar over atmospheric pressure.

The CONTHOS should not be used for measuring ignitable gas mixtures.

The customer must ensure compliance with applicable regulations when using the analyzer
with flammable or toxic gases or when installing within hazardous areas.
Measuring principle - gas composition
The CONTHOS 3-PMD uses a paramagnetic sensor. This measuring principle is highly selective for oxygen
analysis. Nonetheless it is necessary to provide as much of the following information as possible in order to
calculate potential interferences presented by the different constituents.
LFE GmbH & Co.KG
CONTHOS 3-PMD
Application Questionnaire
81916611
31.07.17