MessKonzept FTC320 User manual

FTC320 Ex
Gas analysis using thermal
conductivity measurement for
zone 2 ATEX II 3G Ex nR IIC T4 Gc
Operating Manual

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About this manual
Thank you for using the Messkonzept FTC320. It has been designed and manufactured using highest
quality standards to give you trouble free and accurate measurements.
© Copyright Messkonzept GmbH 2020.
This document is protected by copyright. Neither the whole nor any part of it or the information
contained in it may be adapted or reproduced in any form except with the prior written approval of
Messkonzept.
All information of technical nature and particulars of the product and its use (including the information
in this manual) are given by Messkonzept in good faith. However, it is acknowledged that there may be
errors or omissions in this manual. Images and drawings may not be in scale. For the latest revisions
to this manual contact Messkonzept or visit www.messkonzept.de
Messkonzept welcomes comments and suggestions relating to the product and this manual.
Please Note! The design of this instrument is subject to continuous development and improvement.
Consequently, this instrument may incorporate minor changes in detail from information contained in
this manual.
Important! In correspondence concerning this instrument, please specify the type number and serial
number as given on the type label on the right side of the instrument.
All correspondence should be addressed to:
Messkonzept GmbH
Niedwiesenstr. 33
60431 Frankfurt
Germany
Tel: [phone]
Fax: [phone]
email: [e-mail]
http: www.messkonzept.de
This manual applies to: FTC320
Date of Release: March 11, 2021
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Quick Installation Guide
For quick installation of the FTC320 we recommend to read the following chapters of this manual:
• Chapter 1 "Operator Safety": Important warnings, saftey instructions and intended use.
• Chapter 3 "Assembly of the Instrument": Mounting, pneumatic and electric connection. Also see
Chapter 10 "Appendix: Dimensional Drawing"
• Section 7.1 "Calibration": Recommended calibration intervals, the calibration process and rec-
ommended test of functionallity after bringing into service.
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Contents
1 Operator Safety 5
1.1 Notes on Safety Conventions and Icons . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
1.2 Warning Notices . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
1.3 Safety Instructions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
1.4 Safety instructions for use in explosion hazard areas Zone 2 . . . . . . . . . . . . . . . . 7
1.5 Intended Use . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
2 Principle of Measurement 9
2.1 Determining Concentrations via Thermal Conductivity . . . . . . . . . . . . . . . . . . . 9
2.2 FTC320 Detector Unit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
3 Assembly of the Instrument 13
3.1 Installation of the FTC320 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
3.2 GasPorts ........................................... 14
3.3 Leakage Test . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
3.3.1 Housing Seal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
3.4 Electrical Connectors and Ground . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
3.4.1 Requirements for Electrical Connectors . . . . . . . . . . . . . . . . . . . . . . . 17
3.4.2 Ground......................................... 17
3.4.3 Data exchange via serial interface (RS-232) . . . . . . . . . . . . . . . . . . . . . 17
4 The Front Panel 19
4.1 Display............................................. 20
4.2 Keys .............................................. 20
5 Instrument display 21
5.1 Warm up Screen . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
5.2 Operation Screen . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
5.2.1 Display of one measured value . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
5.2.2 Display of several measured values . . . . . . . . . . . . . . . . . . . . . . . . . 22
6 General instrument settings 23
6.1 Top Level Main Menu . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
6.2 Diagnosis ........................................... 23
6.2.1 Parameter Menu . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
6.2.2 Errors ......................................... 24
6.3 Instrument Setup . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
6.3.1 Display Unit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
6.3.2 Response Time Setup . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
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6.4 Output Setup . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
6.5 Expert Setup . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
6.5.1 Parameter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27
6.5.2 Access Modes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28
6.5.3 Reset Functions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28
6.5.4 Test of Relays, Analog Outputs and Connections . . . . . . . . . . . . . . . . . . 29
7 Measurand related settings 31
7.1 Calibration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31
7.1.1 Set Offset Gas Concentration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33
7.1.2 Set Gain Gas Concentration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33
7.1.3 Offset Calibration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33
7.1.4 Gain Calibration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34
7.2 AlarmSetup.......................................... 34
7.2.1 Selection of alarm groups . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35
8 Appendix: System Errors 36
9 Appendix: Specifications 39
9.1 Specification of Thermal Conductivity Measurement . . . . . . . . . . . . . . . . . . . . 39
9.2 Electrical Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40
9.3 Permissible Conditions of the sample to be measured . . . . . . . . . . . . . . . . . . . 41
9.4 Environmental conditions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41
9.5 Dimensions .......................................... 41
10 Appendix: Dimensional Drawing 42
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Chapter 1
Operator Safety
This chapter provides information and warnings which must be followed to ensure safe operation and
retain the instrument in safe condition. Read this section carefully before beginning to install and use
the instrument.
1.1 Notes on Safety Conventions and Icons
This icon draws attention to application errors or actions that can lead to safety risks
including the injury to persons or malfunctions, possibly even destruction of the device.
This icon indicates an additional function or hint.
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1.2 Warning Notices
• The operator must ensure that the above classification and marking on the device is suitable for
the application.
• The cables must be connected voltage-free. Do not disconnect while energized!
• Permissible ambient temperature (when used as intended): -5 to +50 °C.
• A fixed wall mounting must be provided. The device is only to be mounted in areas with low
mechanical hazards, such as analysis rooms, in other words, rooms in which no heavy work is
performed.In areas with high mechanical hazards, such as workshops, transport routes, produc-
tion facilities for heavy equipment or construction sites, etc., additional protection against external
damage is necessary, e.g., by means of a protective cabinet.
• The device may only be used in an area with pollution degree 1 (according to DIN 60664-1).
• Avoid accumulation of dust on the device! Regular inspection of the housing and cables with
regard to mechanical damage is mandatory. In atmospheres that strongly attack plastics, the
front foil must also be checked for cracks and discoloration, especially in the area of the buttons.
If damage occurs, the device must be taken out of operation and the manufacturer must be
contacted.
• Warranty expires if the housing is opened.
• The unit and the cables must be effectively protected against damage and against UV light (pro-
tective roof for outdoor installation).
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1.3 Safety Instructions
• For safe operation of the device please pay regard to all instructions and warnings in this manual
• Only put the device into operation after it has been installed properly. A competent and authorised
person is required for installation, connection and operation of the device. This person has to read
the manual and follow all instructions. Keep this manual to look up questions that can occur later
on.
• Defective devices must be disconnected from the process! This applies for apparent damages
of the device such as physical damages but also in the case of unclarified malfunctions in the
operation. Separate the device from the process pneumatically (both gas inlet and gas outlet)
and remove the power supply from the device.
• Make sure that the electric installation protection against accidental contact agree to the applica-
ble safety regulations. The protective earth connection must be made before all other connec-
tions. Any interruption in the protective earth can cause danger.
• Pay regard to the local regulations and circumstances regarding electric installations.
• Repairs may only be done by Messkonzept.
1.4 Safety instructions for use in explosion hazard areas Zone 2
Conformity with DIN EN 60079-15 "Explosive atmospheres - Part 15: Equipment protection by type of
protection "n" : 2011-02 and 2020-03" was proven with report no. 2.12BR190104AUG2V06 "Bericht
zur Eignung des Standardgehäuses der Messgeräte FTC3xx und FTC4xx für Zone 2, Schutzart „nR“,
schwadensicheres Betriebsmittel"1. If flammable gas is fed into the analyzer at overpressure, a leak in
the gas path could result in an ignitable mixture in the analyzer housing. To prevent the formation of an
explosive atmosphere in the device itself even in the event of a leakage, the housing is internally filled
with glass beads which, due to their filling density, leave only a small free volume of about 0.15l in the
housing. Moreover, due to the small size of the glass beads, this free volume is fragmented into such
small sub-volumes that a flame cannot spread. Therefore the device may only be opened by the
manufacturer.
1.5 Intended Use
Only gases that are non-corrosive and free of condensate, dust, aerosol or oil mist may be lead in the
FTC-series gas analyzer. Flammable gases require appropriate protective measures. Explosive gases
may not be lead into the FTC. The Instrument may not be used in hazardous areas. Please contact
[e-mail] for detailed information and solutions.
1Report on the suitability of the standard housing of the FTC3xx and FTC4xx measuring instruments for Zone 2, protection
type "nR", steam-proof equipment
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Upon installation the protection class has to be considered. The ambient atmosphere may not be cor-
rosive. OEM-devices with protection class IP00 demand thermal and electric insulation, as well as
mechanical protection for operation.
FTC-series gas analyzers do not have a metrology marking in the sense of EU directive 2014/32/EU.
They may therefore not be used for example in analyzes in medical and pharmaceutical laboratories or
in the manufacture of pharmaceuticals in pharmacies based on a doctor’s prescription.
The specifications of the device and its manual have to be observed strictly. Please fill out questionnaire
(2.01.1FB180619MPL1) for registration of your measuring task, if your intended use does not comply
with intended use described above. Based on the information given in the questionnaire Messkonzept
will examine the measuring task and possibly authorize it.
Note: Please keep this manual for future use.
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Chapter 2
Principle of Measurement
2.1 Determining Concentrations via Thermal Conductivity
Thermal Conductivity Detectors (TCD) are used in the chemical industry since the 1920s as the first
process gas analyzers for the quantitative composition of gas mixtures. Every gas has a typical heat
conductivity governed by its molar mass and viscosity. The measurement is based on the principle that
the thermal conductivity of a gas mixture is dependent on the thermal conductivities of its gas compo-
nents and their fractional amounts in the mixture. Thus, the concentrations of different components can
be calculated from the thermal conductivity.
The main advantage of the TCD’s measurement principle compared with the wide spread infrared
analysis technique is, that it is not limited to gases with a permanent dipole moment. It can identify
noble gases (He, Ar, Ne, etc.) as well as homonuclear gases such as H2and N2. Furthermore, it is
robust and cost effective.
The principle of thermal conductivity measurement works best if the analyzed gas components’ thermal
conductivities vary greatly. For TC measurement based analysis, one of the following conditions must
be met:
• The mixture contains only two different gases (binary mixture), e.g. CO2in N2or H2in N2
• The thermal conductivity of two or more components is similar, e.g. measuring H2or He in a
mixture of O2and N2(quasi binary mixture)
• The mixture contains more than two gases, but all but two components’ (or component groups’)
volumetric fractions are constant over time
• The mixture contains more than two gases, of which all but two components’ concentrations
can be determined through other measurement principles (as employed in the FTC 400 through
cross-sensitivity compensation of IR- and TC-sensor information)
The thermal conductivity of gases rises with temperature and the slope of the increase
with temperature is different for different gases. On customer request it can be checked
whether the temperature of heat sink and/or source can be changed in order to improve
the sensitivity of the measurement or to avoid cross-sensitivity effects.
Cross-sensitivity is the sensitivity of the measurement on other gases than the measured
component. Perturbation-sensitivity means the sensitivity of the measurement on other
influences than the gas-composition, e.g. the gas pressure.
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Gas Out
130˚C
60˚C
Gas In
Figure 2.1: Schematic drawing of thermal conductivity measurement. The sensor is comprised in the
stainless steel block which is kept at a constant temperature.
The FTC320 contains a thermal conductivity sensor to analyze the quantitative composition of gas mix-
tures. The measurement is based on the heat transfer between a heat source and a heat sink.
The measuring gas is led through a stainless steel block that is kept at a constant temperature of
63◦C (for most applications). The block temperature is stabilized using a control loop - it serves as
a heat sink of constant temperature. A micro mechanically manufactured membrane with a thin-film
resistor serves as heat source. A control loop stabilizes the membrane temperature at 135◦C (for most
applications).
Above and below the membrane two small cavities are etched into the silicon. These cavites are filled
with measuring gas by diffusion. The surfaces opposite to the membrane are thermally connected with
the heat sink. Through maintaining a constant temperature gradient between the two opposite surfaces,
the heat flow is dependant of the gas mixture’s thermal conductivity alone. Hence the voltage needed
to keep the membrane temperature constant is a reliable measure for the thermal conductivity of the
mixture and can be used further to determine the gas mixture’s composition.
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Mea-
suring
Gas
Carrier
Gas
Basic
range Smallest range
Smallest
supressed zero
range
Multi Gas
Mode
H2N2/ air 0% - 100% 0% - 0.5% 98% - 100% Yes
H2Ar 0% - 100% 0% - 0.4% 99% - 100% Yes
H2He 20% - 100% 20% - 40% 85% - 100% On
request
H2CH40% - 100% 0% - 0.5% 98% - 100% On
request
H2CO20% - 100% 0% - 0.5% 98% - 100% On
request
He N2/ air 0% - 100% 0% - 0.8% 97% - 100% Yes
He Ar 0% - 100% 0% - 0.5% 98% - 100% Yes
CO2N2/ air 0% - 100% 0% - 3% 96% - 100% Yes
CO2Ar 0% - 60% 0% - 10% - Yes
Ar N2/ air 0% - 100% 0% - 3% 96% - 100% Yes
Ar CO240% - 100% - 80% - 100% Yes
CH4N2/ air 0% - 100% 0% - 2% 96% - 100% Yes
CH4Ar 0% - 100% 0% - 1.5% 97% - 100% Yes
O2N20% - 100% 0% - 15% 85% - 100% Yes
O2Ar 0% - 100% 0% - 2% 97% - 100% Yes
N2Ar 0% - 100% 0% - 3% 97% - 100% Yes
N2CO20% - 100% 0% - 4% 96% - 100% On
request
NH3H20% - 100% 0% - 5% 95% - 100% On
request
CO2H20% - 100% 0% - 2% 99% - 100% On
request
SF6N2/ air 0% - 100% 0% - 2% 96% - 100% On
request
Table 2.1: Measuring ranges of typical gas compositions for analysis with the FTC320.
The FTC320 must not be used with explosive gases. Flammable gases such as H2and
CH4may only be used in devices filled with glass balls. A gas mixture of a flammable
gas with an inert gas in a mixing ratio such, that it is still inflammable for any amount of
air added is called totally inertised. Totally inertised gases can also be used in devices
without glass balls.
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“Basic range“ is the largest possible measuring range and is set by default. The lineariza-
tion is performed over the basic range. The smallest measuring ranges at the beginning
and the end of the basic range are facilitated through specific calibration. The smallest
possible range between the basic range and the smallest ranges at the end beginning and
the end of the range can be estimated by linear Interpolation.
The Multi Gas Mode (MGM) is a configuration that allows for the consecutive mea-
surement of different gas pairs. The gas pair can be switched through the control panel
or via the RS232-interface. Gas pairs labeled “Yes“ in Table 2.1 are commonly used. Gas
mixtures labelled “On request“ can also be implemented upon request.
2.2 FTC320 Detector Unit
The FTC320 detector unit consists of a hermetically sealed pressure proof stainless steel block with
a gas duct, which is suited for pressures up to 20 bar. Sample gas entering through the gas inlet is
guided to the micro-mechanical thermal conductivity sensor and further downstream to the outlet port.
In particular the pneumatics are designed to minimize the influence of a changing gas flow. The oper-
ating temperature of 63◦C is stabilized by a highly accurate PI control loop.
In order to avoid electrical interference on the measuring output the high performance analog adap-
tion circuit is directly mounted on top of the stainless steel block. The piggyback-mounted processor
board digitizes the signal in a 24bit A/D converter. The micro-controller performs all calculations, as
linearization, calibrations and cross sensitivity compensation directly on the detector unit.
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Chapter 3
Assembly of the Instrument
3.1 Installation of the FTC320
The FTC320 is designed for wall fastening. The four mounting holes are shown in Figure 3.1. M4
cylinder head bolts are suitable. Please remember to keep additional space for adequate assembly of
gas hoses and cables (see Chapter 10 "Appendix: Dimensional Drawing" for more information).
6mm
52 mm
20 mm
26 mm
80 mm
65 mm
144 mm
132 mm 4.5mm
Figure 3.1: Mounting holes shown from the reverse side of the housing
If you are planning to lead flammable or toxic gases into the device, the device must be
installed in a well ventilated area. All devices undergo a leakage test during production,
nevertheless a limited release of small gas quantities is possible.
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3.2 Gas Ports
On the bottom of the FTC320 housing two tubes with 6mm outer diameter for gas connection are lo-
cated. They are labeled with “GAS IN “ and “GAS OUT“.
For low requirements regarding gas tightness and resistance to pressure the tubes can be used as
hose connector. For permanent gas and pressure tightness compression fittings are recommended
(e.g. by “Swagelok“©).
After connecting the device a leakage test should be performed (especially when working with flammable
and/or toxic gases).
3.3 Leakage Test
After connecting the gas pipes, a leakage check of the joints must be carried out, e.g. with foam-forming
agents (soap solution or leak detection spray). The test is to be carried out at an overpressure of at
least 1 bar or the pressure expected in operation (max. 3 bar abs.) if this is higher.
The internal gas path of every FTC320 for use in potentially explosive atmospheres is tested for leakage
during production at a pressure of 4 bar for a holding time of 30 minutes.
3.3.1 Housing Seal
The housing leakage test is performed as a routine test according to DIN EN 60079-15:2020-03, sec-
tion 12.2.2.1.2. The interior of the housing is filled with glass beads to minimize the internal free volume.
Therefore the device may only be opened by the manufacturer. Unauthorized opening will ren-
der the instrument unsuitable for use in zone 2. Regular replacement of the silicone seal is not
necessary, but it is recommended that the manufacturer checks the tightness of the housing every 5
years. If the unit is installed in atmospheres that are highly corrosive to plastics, it is recommended to
have the inspection carried out more frequently.
3.4 Electrical Connectors and Ground
1: Analog Input 1
2: Analog Output 2
3: Analog Reference
4: Digital Input (24V)
5: Ground pin 4
6: Analog Output 1
7: Analog Input 2
1: 0 (4) - 20mA,
isolated +
2: 0 (4) - 20mA,
isolated -
3: Ground
RS232
4: TxD
5: RxD 1: Relay 1 - A
2: Power Supply-GND
4: Power supply +24V
3: Relay 1 - B
7: Relay 3 - A
6: Relay 2 - B
5: Relay 2 - A
8: Relay 3 - B
AB C
Figure 3.2: Electrical connector pin assignments of the three connectors on the FTC320
The FTC320 has three three plug connectors as shown in Figure 3.2. Further information on the func-
tion of each contact is given in Table 3.1. The cables (712, IP67) with molded connector plug and a
length of two meters (five meters available on request) are part of the purchased parts package. The
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cables have open ends. The cross-section of the conductors in cable A and C is 0,14mm2, for cable B
0,25mm2. Cable A is shipped with devices set up for analog output.
The protection class of the device is only effective with all cables attached. In case cable
A is not used, connector plug A has to be closed with an end fitting.
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Pin No. Wire
colour Function Description
Connector
A
(7 pins)
1 white Analog Input 1 0 to 10V, 24 bit resolution
2 brown Analog Output 2 0 to 10V, 16 bit resolution
3 green GND GND for pins 1, 2, 6, 7
4 yellow Digital Input (DIN) low: <4.6V; high: >11.4V
5 grey GND GND for Pin 4
6 pink Analog Output 1 0 to 10V, 16 bit resolution
7 blue Analog Input 2 0 to 10V, 24 bit resolution
Connector
B
(5 pins)
1 white Current Loop +
0 (4) to 20mA, floating
isolated ±500V to ground,
max. 1000 Ohm burden
16 bit resolution
2 brown Current Loop -
3 black Serial Interface RS232 GND for pin 4, 5
4 blue Serial Interface RS232 TxD (transmit data)
5 grey Serial Interface RS232 RxD (receive data)
Connector
C
(8 pins)
1 white Relay 1 isolated contact; max 30V, 0.5A
2 brown Power supply - GND
3 green Relay 1 isolated contact; max. 30V, 0.5A
4 yellow Power supply + + 24V (18V to 30V), max. 700mA
5 grey Relay 2 isolated contact; max. 30V, 0.5A
6 pink Relay 2 isolated contact; max. 30V, 0.5A
7 blue Common Relay 3 isolated contact; max. 30V, 0.5A
8 red Common Relay 3 isolated contact; max. 30V, 0.5A
Table 3.1: Connecting pin assignment of connectors A, B, C
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3.4.1 Requirements for Electrical Connectors
Before using the device make sure that the power supply is in accordance with the
specifications of the device and that all electric connections correspond to the information
given in this manual.
The FTC320 is a device of protection class III. For power supply a source with PELV specification (Pro-
tective Extra Low Voltage) according to EN 60204-1 must be used. See also Section 3.4.2 "Ground".
The potential-free relay contacts must also be monitored with a power supply unit with PELV specifica-
tion.
3.4.2 Ground
ERROR
MAINT REQ
POWER
power supply
PELV complying
with EN 60204-1
+24V GND
AB C
GAS OUT GAS IN
Figure 3.3: Grounding the FTC320
To comply with EN 60204-1 and to ensure your device’s function, the device has to be installed such
that the power supply (PELV) is connected to protective earth (PE) with its ground conductor, see
Figure 3.3. The shielding of cables A, B and C should be connected to functional ground. Dependent
on the circumstances, gas inlet and gas outlet can be grounded in addition. Connections to ground
should be made with short low-resistant cables of large diameter.
3.4.3 Data exchange via serial interface (RS-232)
The serial interface, often called UART (Universal Asynchronous Receiver Transmitter), is based on the
RS-232 standard. The point-to-point data transmission is carried out via the two TxD- (Transmit Data)
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and RxD- (Receive Data) wires to be crossed with a common ground line (GND) for both devices. This
creates a bidirectional bus that allows full-duplex communication. The communication partners can
therefore send and receive data simultaneously.
Data transmission via UART is performed with a fixed data frame (UART frame). This frame must be
known to both communication partners. It consists of: A start bit, 5-9 data bits, an optional parity bit and
one or two stop bits. If a PC is connected to the analyzer, the necessary settings are typically identified
automatically. If this is not the case, the parameters can be set manually according to Table 9.2. (see
Section 9.1).
Only a few PCs are still delivered with a so-called COM port (serial RS-232 interface). In order to be
able to operate and program devices that have an RS-232 interface with computers without this, use
of converters from RS232 to USB is advised. The converters often have a 9-pin D-Sub connector as
input, but there are also converters with screw terminal connections.
The serial interface allows operation of the instrument and the display and storage of
measurement data with the SetApp program. More information and a link to download the
software can be found at www.messkonzept.de.
If you plan to develop or use your own software solutions for communication via the
RS-232 interface, you may need more detailed information on the available parameters,
etc. Please contact Messkonzept in this regard.
File name:
FTC320Ex Operating Manual_1.09KD201009MPO3V02.pdf

Page 19 of 43
Chapter 4
The Front Panel
A1 A2 Er
0.30
[%] H2/N2
ERROR
MAINT REQ
POWER
Process Alarm 2 Indicator
Process Alarm 1 Indicator
Error Indicator
Maintenance Indicator
Operation Indicator
Currently measured
gas concentration
Measurement Unit
[Vol%] or [ppm]
RIGHT / Selection Key
(Toggle MGM Mode) UP / Selection Key ENTER / Terminate Key
(Gas Selection in MGM-Mode)
Figure 4.1: Front view schematic of the FTC320 front panel
File name:
FTC320Ex Operating Manual_1.09KD201009MPO3V02.pdf