Siemens FIDAMAT 5E User manual

FIDAMAT 5E gas analyzer
for Measurement of Total Hydrocarbon Content
7MB1420
Instruction Manual
Order no. C79000-B5276-C106-04

Contents Page
1 Introduction 4
1.1 General 4
1.2 Staff Qualifications 4
2 Application 5
3 Design 6
4 Mode of Operation 7
5 Technical Data 8
6 Installation 12
6.1 Mounting 12
6.2 Gas Supply 12
6.3 Electric Connections 13
7 Startup, Calibration 19
7.1 Startup 19
7.1.1 FIDAMAT5E-E,5E-A 19
7.1.2 FIDAMAT5E-I 19
7.1.3 FIDAMAT5E-AS 20
7.2 Calibration 20
7.3 Automatic Calibration 20
8 Operation 23
8.1 Description of Control Panel 23
8.2 Input Example 24
8.3 Coding and Organization of Operating Function Groups 25
8.4 Organization of Data Storage 26
9 Maintenance, Warnings and Error Messages 27
9.1 Maintenance 27
9.2 Warnings and Error Messages 28
9.2.1 Warnings 28
9.2.2 Faults 30
10 Spare Parts and Accessories 33
11 Appendix A-1
11.1 Gas Flow Diagrams A-1
11.2 Layout Diagrams of Important Electronic Components A-5
11.3 Summary of Operating Functions A-6
11.4 Special Sheet for Storage of Current Coding A-35
2

Note
Your attention is drawn to the fact that the contents of this Instruction Manual are not part of a
previous or existing agreement, commitment or statutory right and do not change these. All
commitments on the part of Siemens are contained in the respective sales contract which also
contains the complete and solely applicable warranty conditions. These warranty conditions in the
contract are neither extended nor limited by the contents of this Instruction Manual.
Also notethat forclarity reasonsthis InstructionManual cannotdescribe everypossible problem in
conjunction with the use in systems. Should you require further information, or should particular
problems occur which are not handled in sufficient depth in this Manual, help can be requested
through your local Siemens office or representative.
TermswiththefollowingmeaningsareusedinthisInstructionManualandinthewarninginformation
on the product:
Danger in the sense of this Manual and the warning information on the product itself means that
death, severe personal injury and/or substantial damage to property will occur if the appropriate
safety precautions are not observed.
Warningin the sense of this Manual and the warning information on the product itself means that
death, severe personal injury and/or substantial damage to property can occur if the appropriate
safety precautions are not observed.
Caution in the sense of this Manual and the warning information on the product itself means that
slight personal injury and/or damage to property can occur if the appropriate safety precautions
are not observed.
A notein the sense of this Manual is important information on the product or the respective part of
the Manual to which particular attention should be paid.
3

1 Introduction
1.1 General
Warning! Certainpartsinthiselectricaldevicecontaindangerousvoltagesduring
operation.
Failure to observe the warnings could therefore result in severe personal
injuryand/ordamage toproperty.
Onlysuitablyqualifiedstaffshouldworkonthisdeviceorinitsvicinity.These
shouldbe thoroughly familiar with allwarnings and maintenance measures
accordingto this Manual.
Correct and safe operation of this device is dependent on proper handling,
installation,operationandmaintenance.
This device has left the factory in a perfect condition as regards safety. The notes and warnings in
thisManualmustbeobservedbytheuserifthisstateistobemaintainedandhazard-freeoperation
of the device assured.
1.2 StaffQualifications
A qualified person in the sense of this Instruction Manual and the warning information is one who
isfamiliarwiththeinstallation,constructionandoperationofthedeviceandwhohastheappropriate
qualifications,e.g.:
– is trained and authorized to energize, de-energize, ground and tag circuits and devices in
accordance with established safety practices;
– is trained in the proper care and use of protective equipment in accordance with established
safetypractices;
– is trained in first aid.
4

2 Application
The FIDAMAT 5E is an analyzer for measuring total hydrocarbons. It operates according to the
principle of flame ionization.
The analyzer is suitable for measuring all gaseous hydrocarbons. A heated line must be used for
the connection to prevent condensation and adsorption in the gas line.
Warning! Explosivegasmixturesmust not bemeasuredusingtheFIDAMAT.The ana-
lyzermustnotbeusedinpotentiallyexplosiveatmospheres.
Order No. Analyzertype
7MB1420-1 FIDAMAT 5 rack-mounted unit and bench-top unit for emission measurements
7MB1420-0 FIDAMAT 5 rack-mounted unit and bench-top unit for ambient measurements
7MB1420-2 FIDAMAT5 rack-mounted unitfor measurements withH2/He as combustion gas
7MB1420-4 FIDAMAT5rack-mountedunitfor shedmeasurements
5

3 Design
The device is available either as a bench-top unit fitted in a housing, or without a housing for
installation in a 19-inch rack or 19-inch cabinet.
TheFIDAMATcomprisestwomainsections,theanalyzersectionandtheelectronicswithfrontpanel
controls.
Analyzersection
The analyzer section consists of the oven with sample gas filter, detector chamber and various
restrictors.The ovenis accessiblefrom thesideto enablemodifications orrepairs tobe carried out
in the installed condition without loosening the electric connections or gas piping connections.The
sample gas filter is accessible from the front when the front panel has been folded out.
The analyzer section also contains the diaphram pump with separate oven for the pump head.The
pump can be dismounted from the front without having to open the oven.
The analyzer section also contains pressure regulators, solenoid valves, pressure sensors and a
flowsensor.
Electronics
The electronics consist of the input board which is integrated into the front panel, the motherboard
with preamplifier board and the control board.
Themotherboard contains theEPROMs forthe software, theEEPROM for theparameter sets and
the switch for the write-protected area on the EEPROM.
6

4 Mode of Operation
Electrons are released when hydrocarbons are combusted in a hydrogen flame. These electrons
are collected at an electrode by means of an electric field and measured using a highly sensitive
amplifier. The current is proportional to the quantity of organically-bound C atoms in the sample
gas.
A diaphram pump draws the sample gas and generates a specific pressure. The sample gas is
passed into the measuring chamber via an obstruction-resistant fused silica restrictor.Thesample
gasismixed in themeasuring chamber withhydrogenorhydrogen/helium (4:6)and with a specific
amount of air and routed via the nozzle into the combustion chamber.
The hydrogen pressure is held constant by a pressure regulator. The balanced system of pump,
restrictors and pressure regulators ensures that the sample gas pressure is kept constant.
TheFIDAMAT operates largelyautomatically. Iftheparameters (pressures,temperatures) areset,
thedevicestartsupautomaticallywhen switched onandigniteswhenthesetpoint temperaturehas
been reached. The hydrogen and combustion air pressures are measured when switching on, and
the control panel indicates if they are incorrectly set.
1 Flame
2 Quartz nozzle
3 Combustion air
4 Sample gas
5H
2
6 Measuring electrode
7 Amplifier
Fig. 4 Principle of flame ionization detector
-200 V DC
6
7
2
3
4
5
1
7

5 Technical Data
Number of measuring ranges Max.4,freelyparameterizable
Switching ratio Optional
Autoranging Selectable
Hysteresis:
–Switchover to larger range at 90 % of span of
smallerrange
–Switchover to smaller range at 80 % of span of
smallerrange
Output signals Atterminal stripsX1, X2andX3.
A cable with a plug connector
(OrderNo.W79070-U1610-M25)canbe connected
to these terminal strips
Analog 0/2/4 to 20 mA, max. resolution 0.1 %,
max. load 750 Ω
Digital RS232serialinterfaceasV.24orTTY(20mA)
Programming facilities (for setting of
device-specific parameters using control panel) Oven and pump temperatures, limits, measuring
ranges,measured-valuestorage,timeconstant,
3-stage code for protection against unauthorized
and unintentional use etc.
Device output Floating contacts for:
–Measure/calibratesignal
–Ready/notreadysignal
–4selectable limit relays,max. 24 V/1A, freely
assignableto measuringranges
–4 contacts for range identification, max. 24 V/1 A
–Solenoid valve control, max. 24 V/1 A
Deviceinput 4 floating contacts are required for range switching,
span calibration,
zero calibration,
autocal
Measured-valuedisplay Digital concentration display (5 digits with floating
decimal point)
Resolution of digital display 0.1%of measuredvalue
Ripple of output signal <0.5 % of 10 ppm C1with5E-E
Noise <0.5 % of 10 ppm C3with5E-E
<0.5 % of 10 ppm C3with5E-Aand5E-AS
<0.5 % of 10 ppm C1with5E-I
Detection limit 0.1 ppm C1with5E-E
0.1 ppm C1with5E-Aand5E-AS
0.1 ppm C1with5E-I
8

Repeatability 0.1to 1 %of full-scalevalue, range-dependent
Characteristic Linearization error <1 % of f.s.v.
Long-term drift
Zero
5E-E <2 % of span/week with f.s.v. >10 ppm C1,
range-dependent
5E-A,5E-AS <2 % of span/week with f.s.v. >10 ppm C3,
range-dependent
5E-I < 2 % of span/day with f.s.v. 2 ppm C1, range-
dependent
Span As for zero
Responsetime(T90 time) with time
constant 0 s, set using function 13 <1 s without filter
2 to 3 s with filter
Warm-uptime Approx. 2 to 3 hours
Analyzerchambertemperature 110to200˚C,freely-selectable
Permissiblestoragetemperature –30 to +70 ˚C
Permissibleambienttemperature (operation) 5 to 45 ˚C
Inlet pressure for hydrogen, combustion air,
zero gas and calibration gas(es) 3 bar (45 psig) above atmospheric pressure
Position of use Front panel vertical
Change in display through influencing variables
Mains voltage variations (+10, -15 %) <1 % of measured value
Ambienttemperaturevariations <1 % of measured value/10 K
Atmosphericpressurevariations <1 % of measured value /50 mbar
Frequencyvariations <1 % of measured value for the permissible
frequency range
Influence of position <1 % of measured value with inclination <15˚
Power supply
Mains connection AC110,120,220,230,240V,48to63Hz
Power consumption Approx. 350 VA in start-up phase,
approx. 150 VA during operation
Degree of protection
Rack-mountedunit IP20to DIN40050
Bench-top unit IP21to DIN40050
Dimensions Seedimensionaldrawing
Weight 28 kg
Material of parts in contact with sample gas PTFE,quartz(nozzle,fusedsilica),graphite
(gaskets),stainlesssteel1.4571(316SS)
9

Gas consumption data
5E-E
Combustion gas Approx. 350 ml/min (approx. 21 l/h)
Hydrogen Approx. 20 ml/min (approx. 1.2 l/h)
Samplegas Approx. 1 l/min (approx. 60 l/h)
Zero gas/calibration gas Approx. 2 l/min (approx. 120 l/h)
5E-A(samplegas atstandardpressure)
Combustion gas Approx. 350 ml/min (approx. 21 l/h)
Hydrogen/helium Approx. 110 ml/min (approx. 6.6 l/h)
Samplegas Approx. 1 l/min (approx. 60 l/h)
Zero gas/calibration gas Approx. 2 l/min (approx. 120 l/h)
5E-AS
Combustion gas Approx. 350 ml/min (approx. 21 l/h)
Hydrogen/helium Approx. 110 ml/min (approx. 6.6 l/h)
Samplegas Approx. 1 l/min (approx. 60 l/h)
Zero gas/calibration gas Approx. 2 l/min (approx. 120 l/h)
5E-I
Combustion air: None
Hydrogen Approx. 30 ml/min (approx. 1.8 l/h)
Samplegas Approx. 1 l/min (approx. 60 l/h)
Zero gas/calibration gas Approx. 2 l/min (approx. 120 l/h)
Oxygencross-sensitivity 5E-E: Approx. 30 ppm C1
Length Max. 30 m
Temperature 140to200˚C,freely-selectable
Power consumption (operation) Approx.150VA
Power consumption (startup) Approx.350VA
10

FIDAMAT5Erack-mountedunit
FIDAMAT5Ebench-topunit
Fig. 5.1 Dimension drawings
465
146 222
483
360
4
442
430
Caution: Only mount FIDAMAT 5E on sliding
rails or angled rails
Sample gas connection:
6 mm screw connection or
8 mm screw connection or
1/4" screw connection
Sample gas outlet:
8 mm PVDF screw connection
Auxiliarygasconnections:
6 mm screw connection or
1/4" NPT or
1/4" screw connection
All measures are in mm!
493 430
334
11

6 Installation
6.1 Mounting
The FIDAMAT 5E should be installed or mounted in a vibration-free location.
Warning! Thedevicemustnotbeusedtomeasureexplosivegases.Operationinpoten-
tiallyexplosiveatmospheresisnotpermitted.Thepermissibleambienttem-
perature(Section5, Technical Data) must be observedduringoperation.
The FIDAMAT 5E must only be mounted on sliding rails or angled rails.
See Section 5 for dimensional drawings.
6.2 Gas Supply
Warning! Whenmeasuringtoxicgases,theexhaustgasmustberoutedsuchthatthere
isnodangertotheenvironment.Gaseswhichmayleadtoexplosivemixtures
mustnot be measuredusing the FIDAMAT.
A gas-tight hose or steel piping can be used for the sample gas inlet and outlet depending on the
application, and must be connected leak-free to the gas connection.
The sample gas is drawn in by the diaphram pump (approx. 1 l/min) and should be available at
atmospheric pressure if at all possible. The device can also be operated with a constant pressure
above or below atmospheric of up to 100 mbar.
Note! The useful life of the pump diaphram may be significantly reduced if the
sample gas line is closed and the pump generates a vacuum.
The minimum input pressure down to which a measurement is still possible is approx. 850 mbar
abs.fortheFIDAMAT5E-Eand5E-Iand600mbarabs.fortheFIDAMAT5E-A.
TheexhaustlinefromtheFIDAMAT5Emustalwaysberoutedwithadownwardgradientsincewater
condensesin it. Theinternal diameter shouldnot be lessthan 8 mm(the connection isprovided for
a hose 8 x 1 (10 mm external diameter)).
In order to measure emissions it may be necessary to use a sample gas probe, sampling line and
an additional filter (see accessories in Section 10). The FIDAMAT 5E contains two control circuits
to heat these components. The heaters of these accessories must be powered externally (see
Section6.3).
12

The supply gases (hydrogen, combustion air, zero gas and calibration gas(es)) must be available
with an inlet pressure of 3 bar above atmospheric. A higher zero gas and calibration gas pressure
leads to an increased consumption, a lower pressure may lead to an incorrect measurement since
additional sample gas may be drawn in.
Fig. 6.1 RearpanelofFIDAMAT 5E
6.3 Electric Connections
Warning! Thefollowingmustbeobservedfortheelectricconnections:
VDE 0100 “Regulations for the installation of power systems with mains
voltagesbelow1000V”.
A mains disconnection device must be provided in the building installation
(seerating plate for loadingcapacity).
–Check that the local power supply agrees with that specified on the rating plate on the device.
–The required signal cables must be connected to the 25-pin trapezoidal plugs X1, X2 and X3
and the 5-pin round plugs X4, X5 and X6 according to the pin assignment diagram.
X2
X3
X4
X6
X1
Calibration
gas 3
Mains
Calibr. gas 4
Calibr. gas 1
Zero gas
Combustion
air
H2/HeCalibration
gas 2
X5
13

PinassignmentdiagramFIDAMAT5E-E
X3
25
RXD–
24
10
9
TXD–
TXD+
RXD+
2
7
3
1
TXD
GND
V24
Screen
TTY
RXD
Calibrate span (funct. 8)
Limit 2
Measure
Calibrate
Limit 3
Limit 4 Status
signal
Calibrate zero (funct. 5)
Vacant
Analog current –
MR3
Ready
Not Ready
Measuring range identification
Contact closed = MR active
Status
signal
13
12
13
25
24
23
15
22
21
20
19
17
16
14
Limit 1
Analog current –
MR4
11
10
9
8
2
7
6
5
4
18
3
1
Connection sideDevice side
Pin
Connection sideDevice side
Pin
Analog current +
MR2
MR4
MR1
X1
Contact open =
limit triggered
X2
12
Limit 3
E2
11
10
9
13
Connection side
Device side
Pin
Valve for hydrogen
E1 closed triggers a single
autocalibration
E2 closed = E1 is activated
Valve for calibration gas 3
13
25
24
23
15
22
21
20
19
18
16
14
No warning
Connection side
Device side
Pin
Warning
17
Valve for calibration gas 4
Valve for calibration gas 2
Valve for zero gas
Valve for calibration gas 1
E1
Signal contact “Calibrate”(closed =
calibration being carried out
Ground
Vacant
Limit 4
Limit 1
Limit 2 Contact closed =
limit triggered
8
2
7
6
5
4
3
1
Contact
open =
valve off
(closed)
14

Pinassignment diagram FIDAMAT 5E-I
X3
25
RXD–
24
10
9
TXD–
TXD+
RXD+
2
7
3
1
TXD
GND
V24
Screen
TTY
RXD
Calibrate span (funct. 8)
Limit 2
Measure
Calibrate
Limit 3
Limit 4 Status
signal
Calibrate zero (funct. 5)
Vacant
Analog current –
MR3
Ready
Not Ready
Measuring range identification
Contact closed = MR active
Status
signal
13
12
13
25
24
23
15
22
21
20
19
17
16
14
Limit 1
Analog current –
MR4
11
10
9
8
2
7
6
5
4
18
3
1
Connection sideDevice side
Pin
Connection sideDevice side
Pin
Analog current +
MR2
MR4
MR1
X1
Contact open =
limit triggered
X2
12
Limit 3
E2
11
10
9
13
Connection side
Device side
Pin
Valve for hydrogen
E1 closed triggers a single
autocalibration
E2 closed = E1 is activated 13
25
24
23
15
22
21
20
19
18
16
14
No warning
Connection side
Device side
Pin
Warning
17
Valve for zero gas
Valve for calibration gas
E1
Signal contact “Calibrate”(closed =
calibration being carried out
Ground
Vacant
Limit 4
Limit 1
Limit 2
Contact closed =
stripper faulty
8
2
7
6
5
4
3
1
Contact closed =
limit triggered
Contact
open =
valve off
(closed)
15

PinassignmentdiagramFIDAMAT5E-A
X3
25
RXD–
24
10
9
TXD–
TXD+
RXD+
2
7
3
1
TXD
GND
V24
Screen
TTY
RXD
Calibrate span (funct. 8)
Measure
Calibrate Status
signal
Calibrate zero (funct. 5)
Vacant
Analog current –
MR3
Ready
Not Ready
Measuring range identification
Contact closed = MR active
Status
signal
13
12
13
25
24
23
15
22
21
20
19
17
16
14
Analog current –
MR4
11
10
9
8
2
7
6
5
4
18
3
1
Connection sideDevice side
Pin
Connection sideDevice side
Pin
Analog current +
MR2
MR4
MR1
X1
X2
12 E2
11
10
9
13
Connection side
Device side
Pin
Valve for hydrogen/helium
E1 closed triggers a single
autocalibration
E2 closed = E1 is activated
Valve for calibration gas 3
13
25
24
23
15
22
21
20
19
18
16
14
No warning
Connection side
Device side
Pin
Warning
17
Valve for calibration gas 4
Valve for calibration gas 2
Valve for zero gas
Valve for calibration gas 1
E1
Signal contact “Calibrate”(closed =
calibration being carried out
Ground
Vacant
8
2
7
6
5
4
3
1
Contact
open =
valve off
(closed)
16

PinassignmentdiagramFIDAMAT5E-AS
X3
25
RXD–
24
10
9
TXD–
TXD+
RXD+
2
7
3
1
TXD
GND
V24
Screen
TTY
RXD
Calibrate span (funct. 8)
Measure
Calibrate Status
signal
Calibrate zero (funct. 5)
Vacant
Analog current –
MR3
Ready
Not Ready
Measuring range identification
Contact closed = MR active
Status
signal
13
12
13
25
24
23
15
22
21
20
19
17
16
14
Analog current –
MR4
11
10
9
8
2
7
6
5
4
18
3
1
Connection sideDevice side
Pin
Connection sideDevice side
Pin
Analog current +
MR2
MR4
MR1
X1
X2
12 E2
11
10
9
13
Connection side
Device side
Pin
Valve for hydrogen
E1 closed triggers a single
autocalibration
E2 closed = E1 is activated
Valve for sample gas
13
25
24
23
15
22
21
20
19
18
16
14
No warning
Connection side
Device side
Pin
Warning
17
Bypassvalve
Valve for zero gas
Valve for calibration gas 1
E1
Signal contact “Calibrate”(closed =
calibration being carried out
Ground
Vacant
8
2
7
6
5
4
3
1
Contact
open =
valve off
(closed)
17

Pinassignmentdiagram
X4
1 Pt100 for heater of sample gas line
2 Pt100 for heater of sample gas line
3 Control output for heater of sample gas line +24 V
4 Control output for heater of sample gas line
5 Vacant
X5
1 Pt100 for heater of sampling probe
2 Pt100 for heater of sampling probe
3 Control output for heater of sampling probe +24 V
4 Control output for heater of sampling probe
X6
1 Control output for external pump +24 V
2 Control output for external pump
3 Vacant
2
3
1
5
2
3
4
1
4
23
1
18

7 Startup,Calibration
7.1 Startup
You should be acquainted with the operation of the FIDAMAT 5 (Section 8)!
Note! Theservicelifeofthepumpdiaphragmmaybeconsiderablyshortenedifthe
sample gas line is closed and the pump generates a vacuum!
A prerequisite for correct start-up is the presence of hydrogen and combustion air with the
appropriate inlet pressures (3 bar above atmospheric).
The response time of the analyzer differs depending on its previous use. It is two to three hours in
the case of run-in analyzers, and longer when starting up for the first time or if the analyzer is
contaminated.
The analyzer displays the current software version when the power supply is connected. “Start”
subsequently appears in the display. The analyzer is in the status “Not ready”.
Note! Ifthedisplayedmeasuredvaluestartsflashingduringthestart-upphase,the
analyzermust be recalibrated using functions5 and/or 8.
7.1.1 FIDAMAT5E-E, 5E-A
The gas pressures for hydrogen and sample gas/combustion air are checked immediately at the
start and following attainment of the oven temperatures. If the analyzer has already been used
correctly,thestartupisusuallycarriedwithoutadjustingthepressureregulators (adjustablescrews
on front panel or - with the FIDAMAT 5E-E (TÜV) - behind the front panel).
If the message “H2" appears on the display, the hydrogen pressure must be set to 1000 mbar (980
to 1020) overpressure using function 35 and the adjustable screw on the front panel. The analyzer
automatically returns to ”Start" following termination of function 35.
If the message “Air”appears on the display, the sample gas pressure (combustion air pressure)
must be set to 380 to 390 mbar using function 36 and the adjustable screw on the front panel. The
analyzer automatically returns to “Start”following termination of function 36. The sample gas
pressure should be checked again in the status “Measure”; it should be 500 mbar with the pump
running. When restarting, the pressure without the pump may be higher than 390 mbar; it should
not be adjusted in this case, otherwise 500 mbar will not be achieved in the status “Measure”.
The restart is carried out automatically. The analyzer automatically ignites the flame once the
operating temperatures have been reached and remains in the status “Standby”, i.e. the pump is
switched off and no sample gas can enter the FIDAMAT. Function 65 can then be used to set the
analyzer to the status “Measure”. The hydrogen pressure should be checked again in this status: it
should be 1000 mbar. The pressures need not be reset following a restart.
7.1.2 FIDAMAT5E-I
With the FIDAMAT 5E-I, the sample gas pressure (approx. 550 mbar) is set automatically. The
hydrogen pressure is set or corrected in the same manner as with the FIDAMAT 5E-E and 5E-A.
19

7.1.3 FIDAMAT5E-AS
With the FIDAMAT 5E-AS, the excess sample air is output from the analyzer via the bypass. In
calibrationmode, theexcesscalibrationgas isoutputviathe gasoutlet.Only onezero gasand one
calibrationgas are available for theanalyzer.
7.2 Calibration
The calibration should be carried out using gases whose composition is very close to the sample
gas. If it is necessary to measure methane in nitrogen, a calibration gas containing methane in
nitrogen should also be used. If, for example, propane in synthetic air were used as the calibration
gas in this case, the result would be falsified by the response factor of methane compaired to
propane and by the oxygen error.
The calibration can be carried out in two manners:
–Via the gas connections on the rear of the analyzer. The inlet pressure must be 3 bar above
atmospheric in this case
–Viathe sample gas line, where the excess gas flowsvia a T-piece outsidethe analyzer.
In both cases, the setpoint for the span (function 7) must be entered prior to the calibration.This
value can be checked using function 6 - a value must always be entered with function 7. Ensure
beforeentering thevalue that thecorrect concentrationunithas beenselected,e.g. ppm C3(funct-
ion 94).
The zero and span can then be adjusted using functions 5 and 8 (identifier 1 for all measuring
ranges). Excess calibration gas flows via the sample gas line in both cases.
WiththeFIDAMAT5E-AS,theexcesscalibrationgasflowsviatheexhaustlineduringthecalibration
process.Anexternalvalve(shedvalve)canbeconnectedtopreventthecalibrationgasfrom flowing
back via the sample gas line (see connection diagram for FIDAMAT 5E-AS). To prevent an
overpressure from being generated in the analyzer, ensure that the excess calibration gas can be
discharged at atmospheric pressure.
7.3 AutomaticCalibration
Calibrations with zero and calibration gases can also be carried out automatically. The automatic
calibrationprocedure isactivated usingfunction 22.Further parametersettings canbe madeusing
functions 40 to 48.
Fig. 7.1 shows the timing of the automatic calibration procedure.
20