MessKonzept FTC400 User manual

FTC400
Fast Thermal Conductivity Analyzer
Operating Manual
Messkonzept GmbH
Analytical Technology

About this manual
Thank you for using the FTC400from Messkonzept. It has been designed and manufactured us-
ing highest quality standards to give you trouble free and accurate measurements.
© Copyright Messkonzept GmbH 2014. This document is protected by copyright. Neither the
whole nor any part of it or the information contained in may be adapted or reproduced in any form
except with the prior written approval of Messkonzept.
The product described in this manual and products for use with it are subject to continuous de-
velopments and improvement. 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. For the latest
revisions to this manual contact Messkonzept or visit www.Messkonzept.de
Messkonzept welcome comments and suggestions relating to the product and this manual.
The design of this instrument is subject to continuous development and improvement. Conse-
quently, this instrument may incorporate minor changes in detail from information contained in
this manual. 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: FTC400
Date of Release: January 28, 2019
Software Version: 1.030
File name: Manual_FTC400_1.09KD181129CWI1V01.pdf

Quick Installation Guide
For quick installation of the FTC400we recommend to read the following chapters of this manual:
• Chapter 1 "Operator Safety" with warnings and saftey instuctions and intendes use.
• Chapter 3 "Assembly of instument" describes the mounting, pneumatic and electric con-
nection. Also see Appendix "Dimension Drawing"
• Chapter 6 "Calibration" for recommended calibration intervals and recommended test of
functionallity after bringing into service
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Contents
1 Operator safety 4
1.1 Notes on Safety Conventions and Icons . . . . . . . . . . . . . . . . . . . . . . . 4
1.2 Warning Notices . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
1.3 Safety Instructions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
1.4 Intended Use . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
2 Principle of Measurement 7
2.1 Determining Concentrations via Thermal Conductivity . . . . . . . . . . . . . . . 7
2.2 Determining Concentrations via Infrared Measurement . . . . . . . . . . . . . . . 8
2.3 Analysis of Complex Gas Mixtures . . . . . . . . . . . . . . . . . . . . . . . . . . 10
3 Assembly of the Instrument 11
3.1 FTC400 Detector Unit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
3.2 Installation of the FTC400 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
3.3 Gas Ports . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
3.4 Electrical Connectors and Earth . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
3.4.1 Requirements for electrical connectors . . . . . . . . . . . . . . . . . . . . 14
3.4.2 Ground . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
3.4.3 RS-232 Interface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
3.5 Particular Features of the FTC400 . . . . . . . . . . . . . . . . . . . . . . . . . . 15
4 The Front Panel 16
4.1 Display......................................... 16
4.1.1 Display Indication Infrared Signals . . . . . . . . . . . . . . . . . . . . . . 16
4.2 LED Indicators . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
4.3 Keys .......................................... 17
5 Switching on the device 18
5.1 Warm up Screen . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
5.2 Operation Screen . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
5.3 Top Level Main Menu . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
6 Calibration 20
6.1 General Information on calibration . . . . . . . . . . . . . . . . . . . . . . . . . . 20
6.2 Select Signal to Calibrate . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
6.3 Set Offset Gas Concentration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
6.4 Set Gain Gas Concentration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
6.5 Offset Calibration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
6.6 Gain Calibration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
6.6.1 Use of substitute gases . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
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7 Diagnosis 23
7.1 Parameter Menu . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
7.2 Errors ......................................... 24
8 Setup 25
8.1 The Setup Menu . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
8.1.1 Measuring Gas Setup . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
8.1.2 Response Time Setup . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27
8.1.3 Multi Gas Mode List (useful with Option MGM only) . . . . . . . . . . . . . 27
8.2 Relays ......................................... 28
8.2.1 Relay 1 Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28
8.2.2 Relay 1 Threshold . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
8.2.3 Relay 1 Hysteresis . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
8.2.4 Relay 1 Failsafe / Not failsafe . . . . . . . . . . . . . . . . . . . . . . . . . 30
8.2.5 Relay 1 active/frozen during Calibration . . . . . . . . . . . . . . . . . . . 30
8.2.6 Relay 2 Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31
8.2.7 Common Relay . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31
8.3 Analog Output Setup . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32
8.3.1 Current Loop . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33
8.3.2 Analog Output 1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34
8.3.3 Analog Output 2 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36
8.3.4 Adjust Loop . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36
8.4 Expert Setup . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37
8.4.1 Parameter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37
8.4.2 Access Modes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38
8.4.3 Reset Functions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39
8.4.4 Test of Relays, Analog Outputs and Connections . . . . . . . . . . . . . . 40
9 Appendix: System Errors 42
10 Appendix: Specifications 45
10.1 Specification of Thermal Conductivitly Measurement . . . . . . . . . . . . . . . . 45
10.2 Specification IR Measurement . . . . . . . . . . . . . . . . . . . . . . . . . . . . 46
10.3 Electrical . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 47
10.4 Environmental conditions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 48
10.5 Dimensions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 48
11 Appendix: Dimension Drawing 49
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Chapter 1
Operator safety
This section 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 manufacturer does not assume liability for inappropriate handling of the device. Mal-
functions caused by inappropriate handling may lead to hazards.
• This device is not suited for the operation in areas exposed to explosion hazards!
• Never lead explosive gases or gas mixtures into the device! Dependent on the model the
device flammable gases may be led in the device. Check item „Glass ball filling“ in the
device protocol. Flammable gases may be led in devices filled with glass balls. Here, the
inside space of the housing is densely filled with glass balls (∼0.6mm). In the unlikely
case that a leakage caused an explosive atmosphere, the small spaces between the glass
balls prevent a coincidental ignition caused by a further malfunction of the device from
propagating.
• Never open the housing of the FTC400, especially because of the loose glass balls. When
the device had been opened it may not work safely with flammable gases.
• Garanty expires if the housing is opend
• Disconnect the device from the power supply to prevent an unintended start of the device,
if a safe operation of the device is not guaranteed.
• For operation of the device in the field a rain protection is recommended.
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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 the manual to look up questions that can occur later on
• Make sure that the electric installation protection against accidental contact agree to the
applicable safety regulations. The protective earth connection must be made before all
other connections. 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 Intended Use
Only non-corrosive and condensate-,dust-, aerosol-, oil dust-free gases may be lead in the FTC-
series gas analyser. Flammable gases require appropriate protective measures. Explosive gases
may not be lead in the FTC. Upon installation the protection class has to be considered. The
ambient atmosphere may not be corrosive. OEM-device with protection class IP00 demand
thermal and electric insulation, as well as mechanical protection for operation.The specifica-
tions 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
we will examine the measuring task and possibly authorise 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) were used in the chemical industry since the 1920s as
the first process gas analyzer for the quantitative composition of gas mixtures. Each 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 mixture of gases is dependent on the thermal
conductivity of the gas components and their fractional amount in the gas mixture. Thus, the
fraction of the different components can be determined. It is one of the main advantages of the
TCD principle that, unlike the wide spread infrared technique, 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 like H2and N2. Furthermore, it is robust and cost effective. The principle of thermal con-
ductivity measurement works best, if the different gas components have clearly different thermal
conductivity and in addition one of the following conditions is met:
• The mixture contains only two components (binary mixture), e.g. CO2in N2or H2in N2
• The mixture contains more than two components, but only the concentration of two com-
ponents vary
• The thermal conductivity of two or more components is similar, e.g. when measuring H2or
He in a mixture of H2and N2(quasi binary mixture)
The thermal conductivity of gases is rising 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 means 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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Figure 2.1: Scematic drawing of thermal conductivity measurement. The sensor is comprised in
the thermally stabilized stainless steel block.
The FTC400 sensor determines the quantitative composition of gas mixtures by measuring
the thermal conductivity between a heat source and a heat sink through the gas mixture. The
measuring gas is conducted to the sensor through a stainless steel block that is kept at a constant
temperature of 63◦C. This temperature a stabilized using a control loop such that the block can be
used as heat sink. A thin membrane of micro-mechanical silicon chip serves as heat source. Two
thin film resistors are integrated into the membrane, one is used for both the membrane the other
for measuring its temperature. A second control loop stabilizes the membrane temperature at
135◦C. Above and below the membrane two small cavities are etched into the silicon, which are
filled by diffusion with the measuring gas. The surfaces opposite to the membrane are thermally
connected with the heat sink. Dependent on the thermal conductivity of the gas more or less
energy is led off the membrane. The voltage needed to keep the temperature of the membrane
constant is a measure for the thermal conductivity of the gas. Both resistors on the membrane
are protected by an inert coating in order to prevent chemical reactions with the measuring gas.
“Basic range“ is the largest possible measuring range and is set by default. The linearization
is performed over the basic range. The smallest measuring ranges at the beginning and the
end of the basic range can be deduced from 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 measurement of different gas pairs. The gas pair can be switched at via the control
panel or via the RS232-interface. Gas pairs labeled “Yes“ in the table above are commonly used.
Gas mixtures labelled “On request“ can also be implemented with little effort.
2.2 Determining Concentrations via Infrared Measurement
Selective measurement of infrared-active gases Molecules like CO2, CH4, C2H6, CO, NO, SO2
and H2O absorb infrared radiation. The range of absorption in the wavelength spectrum is a
fingerprint for the identification of the sort of molecules. The level of absorption is a measure of
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Measuring Carrier Basic Smallest Smallest suppressed Multi Gas
Gas Gas range range zero range Mode
H2N2or 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 N2or air 0% - 100% 0% - 0.8% 97% - 100% Yes
He Ar 0% - 100% 0% - 0.5% 98% - 100% Yes
CO2N2or air 0% - 100% 0% - 3% 96% - 100% Yes
CO2Ar 0% - 60% 0% - 10% - Yes
Ar N2or air 0% - 100% 0% - 3% 96% - 100% Yes
Ar CO240% - 100% - 80% - 100% Yes
CH4N2or 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
CO H20% - 100% 0% - 2% 99% - 100% On request
SF6N2or air 0% - 100% 0% - 2% 96% - 100% On request
Table 2.1: List of available gas mixtures. Other gases and ranges on request.
the concentration of the gas concerned. The selective measurement of up to three infrared-active
gases in one mixture is enabled by a detector, which tests the absorption with three interference
fi lters at three different wavelengths. The selection of the interference fi lters thus determines
which gases are analyzed. A fourth measurement channel is in a wavelength range where no
absorption of any of the gases occur. Thus the intensity of the IR radiator is determined and
serves as a reference. The combination of the IR measurement with the thermal conductivity
measurement enables the complete determination of complex gas mixtures in many cases.
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Figure 2.2: Scematic drawing if cuvette for IR measurement. Comprised in the thermally stabi-
lized stainless steel block as the sensor fior the thermal conductivity measurement
2.3 Analysis of Complex Gas Mixtures
The combination of the IR measurement with the thermal conductivity measurement enables the
complete determination of complex gas mixtures in many cases.
The FTC400 comprises both technolgies, thermal conductivity measurement and infrared mea-
surement in one housing. Thermal conductivity measurement is influenced by a disturbing quan-
tity causing a cross sensitvity measurement. Modeling of the cross sensitivity and additional
measurements with the IR sensor allow the complete determination of complex gas mixtures.
The thermal conductivity measuring method, combined with other gas-analysis methods, pro-
vides the input signals for a computational compensation process which was modeled before-
hand in an experiment. Up to now, systems with several analyzers were to determine the various
input signals. By means of the integrated IR and humidity measurement, as well as the internal
computing capacity, an integrated solution for the determination of homonuclear and noble gases
in complex gas mixtures is achieved.
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Chapter 3
Assembly of the Instrument
3.1 FTC400 Detector Unit
The FTC400 detector unit consists of a hermetically sealed pressure proofed 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 micromechanical thermal conductivity sensor and further downstream to the
outlet port. In particular the pneumatics is designed to minimize the influence of a changing gas
flow. The operating 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 adaption
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 µ-controller performs all calculations, as
linearization, calibrations and cross sensitivity compensation directly on the detector unit.
3.2 Installation of the FTC400
Figure 3.1 Mounting holes shown from the reverse side of the housing The FTC400is designed
for wall fastening. The four mounting holes are shown in the picture above. M4 cylinder head
bolts are suitable.
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3.3 Gas Ports
On the bottom of the FTC400 housing two tubes with 6mm outer diameter for gas connection are
located. They are labeled with “GAS INm “ 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“©). A
leakage test after connecting the gas ports is recommended.
3.4 Electrical Connectors and Earth
Figure 3.2 Electrical Connectors, view from top on the device The electric contacts are joined in
three plug connectors, see Figure above. For details on the function of each contact, see Table
below. The cables (712, IP67) with an extruded connector plug and a length of two meters (five
meters available on request) are part of the purchased parts package. The cables have open
ends the cross-section of the conductors in cable A and C is 0,14mm2, for cable B 0,25mm2. 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. Conductor colouring 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 send 0 (4) to 20mA, floating
isolated ±500V to ground
max. 800 Ohm burden
16 bit resolution
2 brown Current Loop return
3 black Serial Interface RS232 GND for pin4, 5
4 blue Serial Interface RS232 TxD (transmit)
5 grey Serial Interface RS232 RxD (receive)
Connector C (8 pins)
1 white Relay 1 isolated contact; 36V, max.1A
2 brown Power Supply GND
3 green Relay 1 isolated contact; 36V, max.1A
4 yellow Power Supply + + 24V (18V to 36V), max. 700mA
5 grey Relay 2 isolated contact; 36V, max.1A
6 pink Relay 2 isolated contact; 36V, max.1A
7 blue Common Relay 3 isolated contact; 36V, max.1A
8 red Common Relay 3 isolated contact; 36V, max.1A
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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 FTC400is a device with protection class III. Relay contacts and inputs should only be oper-
ated with safety extra low voltage (SELV;4kV). The power supply has to comply with the PELV
specification (protective extra low voltage) according to EN 60204-1. Unlike SELV, PELV may be
grounded at the output side.
3.4.2 Ground
Figure 3.1: Grounding the FTC400
To comply with EN 60204-1, the device has to be installed such that the power supply (PELV)
is connected to ground with only its ground conductor, see Figure above. The shielding of cable
A, B and C has to be connected to the functional ground. Dependent on the circumstances gas
inlet and gas outlet can be grounded in addition. Connections to ground should be made with
low-resistant, large diameter, short cables to one neutral point.
3.4.3 RS-232 Interface
For setting up the RS-232 interface the wires ends for RxD, TxD and GND from cable B have to
be connected to the appropriate pins of a D-sub plug. The D-sub plug can directly be connected
to the plug socket of the PC or via an USB-serial adapter to an USB port. Typically the connected
PC adopts to the requires settings of the RS232 interface. If this is not the case, see Appendix
B2-Interface and insert the parameters by hand. Finding the COM port the device is connected
to require trial and error. The RS232 interface allows to operate the device via SetApp, see
www.messkonzept.de for more information.
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3.5 Particular Features of the FTC400
• Accurate and long term stable thermal conductivity measurement
• High sensitivity (e.g. measuring range 0 Vol.% to 0.5Vol.% H2in N2)
• Fast response with a T90 time of less than 1 sec (dependent on flow rate)
• Low noise (<10ppm H2in N2)
• Precise linearization for binary gas mixtures of H2, He, CO2, CH4in N2or Ar and N2in Ar
are preset
• Additional customized linearization with polynomial up to sixth order available
• Isolated 0/4-20mA output, start and end point can be set to any concentratio
• Conventional 2-point calibration or simple one-gas calibration
• Display indication in ppm or Vol.%
• Pressure proof and vacuum leak tight stainless steel 1.4571) gas duct
• Three isolated relays for indication of alarms and instrument status
• Small and robust transmitter in powder-coated aluminum housing for field use (IP65)
• Access to all values and parameters via RS 232 interface
• Digital output with 1ppm resolution over the whole 100Vol.% range
• PC-based service program SetApp offers easy to operate calibration routines, diagram of
measured concentration vs. time and possibility to write data to a log file.
• Compensation for cross sensitivity and interfering components
• Multi Gas Mode allows sequential measurement of up to 16 binary gas mixtures
• Dimensions: Width 145mm, Height 80mm plus connectors, Depth 85mm
• Power supply 18V to 36V DC / 700mA
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Chapter 4
The Front Panel
4.1 Display
Content missing. Insert type dependent description here. Standar
4.1.1 Display Indication Infrared Signals
The top line of the display shows the concentration of one selected IR signal. If an error is pending
or an exceedance of limit value, the first line shows the error indication and the IR value in an
alternation of 3 seconds. The unit displayed is indicated in the bottom left corner of the display. It
applies to both values. When showing Vol.%, the number of digits for both values is the same.
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4.2 LED Indicators
System Alarm Indicator (red)
The flashing red LED indicates a system. Dependent on the configuration of the “Alarm matrix“,
see chapter 8.2.7 Common Relay, also other errors can be shown
System Maintenance Indicator (yellow)
The flashing yellow LED indicates that the instrument demands maintenance. It still works but
the specifications given in Appendix B1 “Performance“ may not me met anymore.
Operation Indicator (green)
The flashing green LED indicates that power is supplied and the internal processor works prop-
erly.
4.3 Keys
RIGHT / Selection Key
The <RIGHT> key enables the operator to scroll through the various menu items of
menus and submenus. The currently selected menu item is marked by black background and
is called with the <ENTER> key. In submenus requiring numerical inputs, the <RIGHT> key
scrolls to the next digit and to “ESC/OK“ at the end.
UP / Selection Key
In menus or submenus the <UP> key quits the recent menu and changes to the superior
menu and ultimately to the main menu. To quit menus with an “ESC/OK“ option, select one of
these fields with the <RIGHT> key and confirm with <ENTER>. In submenus requiring numerical
inputs, the <UP> key changes the selected digit.
ENTER / Termination Key
The <ENTER> calls the item, that is marked as selected by the black background. Menu
items are selected by the <RIGHT> key. In submenus with an “ESC/OK“ option the <ENTER>
key confirms the selection of “ESC“ or “OK“.
Optional: Devices with Multi Gas Mode (MGM) The <ENTER> gives fast access from the
measured value display to changing the gas mixture. This mode is indicated by highlighting the
currently selected gas pair. Pressing <ENTER> selects the next entry of the MGM list. Pressing
<RIGHT> again deactivates fast access mode of the mixture selection. See chapter “Multi Gas
Mode List“ for a description how to modify the MGM list.
File name: Manual_FTC400_1.09KD181129CWI1V01.pdf

Chapter 5
Switching on the device
This chapter describes switching on the device. The warm up screen, see Figure 5.0, shows
the block temperature while the block warms up. After the warm up, the device switches to the
operation screen, see Figure 5.1, from here the operation screen the main menu is opened. The
device can be run in two different modes, the safety mode and the normal mode. In the safety
mode every action has to be confirmed by the operator code (default: 111.000). In both modes
some actions require an expert code, for example changing the operator code and changing
between normal and safety mode. This manual refers to the device operated in normal mode.
5.1 Warm up Screen
The warm up screen shows the current block temperature during warm up in the center of the
screen, see Figure above. The target value of the block temperature, here 63◦C, are shown in
the bottom line of the screen. The current loop, relays and analog outputs are deactivated during
warm up. When the difference between the measured temperature and the target value is smaller
than 0.5◦C, the device switches to the operation screen. Pressing the <UP> key during warm up
switches directly to operation screen and activates the current loop. The displayed concentration
value is not precise until the block is warmed up.
5.2 Operation Screen
After the warm up of the block the operation screen is shown, see Figure above. The first line
provides the status information. Alarms are indicated by “A1“ and “A“, system errors are indicated
by “Er“, see chapter “Relays“ and Appendix A. The third line shows the unit of the measurement,
File name: Manual_FTC400_1.09KD181129CWI1V01.pdf