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MessKonzept FTC400, Operating Manual

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MessKonzept FTC400 Operating Manual Download Page 35

Page 34 of 49

8.3.1

Current Loop

In the “Current Loop“ menu the range of the current output and the behavior of the current loop
during calibration and in case of an error are defined. Press <RIGHT> to scroll through the list
of the different modes. Select “OK“ and confirm with <ENTER> to confirm the selection of the
mode.

Current loop output modes:

• “I/O Mode,4-20mA“ The loop current ranges from 4mA to 20mA. 4mA correspond to the

starting point of the measuring range as defined in “IoutMin“, 20mA correspond to the
starting point of the measuring range as defined in “IoutMax“.

• “I/O Mode, 4-20mA (Err)“ This mode works in the analogous manner as the previously

described mode. In case of an error the current output is set to the value specified in the
submenu “I-Out Error“.

• “I/O Mode, 0-20mA“ The loop current ranges from 0mA to 20mA. 0mA correspond to the

starting point of the measuring range as defined in “IoutMin“, 20mA correspond to the
starting point of the measuring range as defined in “IoutMax“.

File name: Manual_FTC400_1.09KD181129CWI1V01.pdf

Summary of Contents for FTC400

Page 1: ...FTC400 Fast Thermal Conductivity Analyzer Operating Manual Messkonzept GmbH Analytical Technology ...

Page 2: ...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 ...

Page 3: ...h 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 File name Manual_FTC400_1 09KD181129CWI1V01 pdf ...

Page 4: ...tors 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 Infor...

Page 5: ...lay 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 M...

Page 6: ...on 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 File name Manual_FTC400_1 09KD181129CWI1V01 pdf ...

Page 7: ...ide 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 sa...

Page 8: ...ctric 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...

Page 9: ...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 CO2 in N2 or H2 in N2 The mixture contains more than two components but only the concentration of two com ponents vary The thermal conductivity of two or more co...

Page 10: ...ed 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 begin...

Page 11: ... 5 95 100 On request CO H2 0 100 0 2 99 100 On request SF6 N2 or 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 wavelen...

Page 12: ... 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 ...

Page 13: ...y 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 direc...

Page 14: ...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...

Page 15: ...A 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 ...

Page 16: ...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 co...

Page 17: ...cation 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...

Page 18: ...ration 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 File name Manual_FTC400_1 09KD181129CWI1V01 pdf ...

Page 19: ...e 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 it...

Page 20: ...nt 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 t...

Page 21: ... the parameter menu Press the UP key to get access to the top level main menu 5 3 Top Level Main Menu The main menu is the origin of the menu tree that gives access to the submenus see Appendix E Selecting Operation as shown above and pressing ENTER or UP returns to the Operation screen To access the submenus select the desired submenu and press ENTER The menu paths given in the following chapters...

Page 22: ...measurement regarding pressure or gas flow changes in case an extreme change in ambient temperature occurs For devices operated in safety mode the operator code is required to access the calibration menu By default the operator code is set to 111 000 The goal of the calibration is that the measured concentration is in agreement with the given test gas concentration To obtain this two calibration p...

Page 23: ...RIGHT three times to select the first line of the display Then press ENTER to select the signal to calibrate THEN check if the offset and gain gas concentrations for calibration in lines three and four are correct Next select Calibrate to start the calibration and follow the instuction given below 6 3 Set Offset Gas Concentration Before performing a calibration the concentration of the used test g...

Page 24: ...ration is not in in agreement with the test gas concentration By selecting ESC and pressing ENTER the offset calibration is repeated With OK the calibrations is confirmed as correct and the new offset value saved The following menu offers the option to proceed with the gain calibration Choosing NO quits the calibration routine with the note to apply process gas again Choosing YES leads to the gain...

Page 25: ... parameters This may help an experienced user to diagnose malfunction caused by wrong settings The parameter menu gives enables to scroll through the entire parameter list Contact Messkonzept for detailed information on the parameter The first line contains the name of the parameter the last line its number To move forward in the list press ENTER to move backwards press Up To leave the parameter m...

Page 26: ...play In the default setting in this case also the status relay signalizes the error externally The menu Errors gives access to the list of current errors No Errors indicates that no error is pending for pending errors the name of the error according to Appendix A is written Pressing ENTER proceeds to the next pending error and UP to the previous error To leave the parameter menu press RIGHT and EN...

Page 27: ...l channels are set The Expert Setup gives write access to the parameters reset functions access modes and codes and test signals for subsequent connected equipment The Setup menu contains four submenus The Instrument Setup selects the measured gas pair the units and the T90 response time of the exponential filter The Relay Setup defines the conditions to trigger the relays In the Output Setup the ...

Page 28: ...alues via the RS 232 interface will always give the numbers in ppm with 1ppm resolution 8 1 1 Measuring Gas Setup In the second line in the Instrument Setup indicates the currently measured binary gas mixture For devices with Multi Gas Mode MGM pressing ENTER changes to the next binary gas mixture included in the device Up to 16 binary gas mixtures can be included For every binary gas mixture the ...

Page 29: ... influenced by the gas exchange time which depends on the pneumatic installation and flow rate of measuring gas A gas flow of 80l h leads to a gas exchange time of under 0 5s measured from the gas inlet of the device 8 1 3 Multi Gas Mode List useful with Option MGM only Devices supporting the Multi Gas Mode MGM can measure in succession up to 16 different binary gas mixtures that are selected afte...

Page 30: ...Relay 1 Relay2 and the status alarm relay Common Relay The thresholds and hysteresis for Relay 1 and Relay 2 can be set The status relay indicates a malfunction of the device but can also indicate the threshold alarms Each relay may be configured as failsafe or not failsafe The threshold relays are indicated by A1 respectively A2 in the first display line The common relay is indicated by Er in the...

Page 31: ...ove the threshold plus the hysteresis given in R1 Hysteresis The hysteresis is specified in percent of threshold R 1Mode OFF Relay 1 is not used 8 2 2 Relay 1 Threshold In the R1 Threshold menu the threshold value is set The value is denotes in the currently used measuring unit ppm in this case Confirm with OK The threshold is independent from the measuring range 8 2 3 Relay 1 Hysteresis In the R1...

Page 32: ...essing RIGHT three times to mark OK and confirm with ENTER 8 2 5 Relay 1 active frozen during Calibration The relay can be configured as Calibration active or Calibration frozen With Calibration frozen the relay does not respond to any changes of the measured concentration during the calibration procedure and stays in the state it was in when the calibration began With Calibration active the relay...

Page 33: ...enu Aux 8 2 7 Common Relay In the Common Relay menu based on the following errors is defined threshold alarms from relay 1 und 2 external error internal errors see Appendix A for a detailed description The menu Alarm matrix opens the list of errors that can be included in the common relay Scroll forward through the list with ENTER and backwards with UP The third display line indicates File name Ma...

Page 34: ...s included in the Alarm matrix by C Alarm YES are pending the common relay triggers In the factory settings all internal errors described in Appendix A are included in the common relay 8 3 Analog Output Setup The FTC400is equipped with three analog outputs Current Loop is an isolated current out put Analog Out 1 and Analog Out 2 are not DC isolated outputs with an output range from 0 to 10 V File ...

Page 35: ...nd to the starting point of the measuring range as defined in IoutMin 20mA correspond to the starting point of the measuring range as defined in IoutMax I O Mode 4 20mA Err This mode works in the analogous manner as the previously described mode In case of an error the current output is set to the value specified in the submenu I Out Error I O Mode 0 20mA The loop current ranges from 0mA to 20mA 0...

Page 36: ...rent loop is constant current specified in the submenu I Out Const Set the value to 0 0mA if the current loop is not used The current specified for signalling errors should be outside the measuring range By default the error current is set to 3 0mA values up to 22 0mA can be set When choosing the Cal active option the currently measured value is shown at the current output during the calibration W...

Page 37: ...pound raw Linearized raw signal in ppm 3 P2 Norm signal Normalized measuring signal 4 P3 TC average Thermal Conductivity in mV 5 P53 Block Temp Block Temperature 6 P133 Aux ppm Linearized and calibrated signal in ppm 7 P134 Aux norm Normalized signal 8 P67 IOut Current Loop AOut1 Offset and AOut Gai allow to scale the analog output according to a linear equation Output AOut1 Gain signal AOut1Offse...

Page 38: ...Page 37 of 49 8 3 3 Analog Output 2 All Analog Out 2 settings are made as described for Analog Out 1 8 3 4 Adjust Loop File name Manual_FTC400_1 09KD181129CWI1V01 pdf ...

Page 39: ... only be used by an advanced user or expert set parameters reset to factory settings changing Operator Code and Expert Code swap between Normal Mode and Safety Mode simulation of alarm and voltage outputs This level is for advanced users or experts and should not be entered by normal operators It is in the responsibility of experts to set the parameters properly The default expert code is 222 000 ...

Page 40: ...to improper values can cause physical destruction of the device The failure persisits even after the parameters is changend back to the prior value 8 4 2 Access Modes This menu allows to change codes for the Operator Code and the Expert Code Further the device can be switched between Safety Mode and Operation Mode The operation mode is used with the setting 1 00000 in the menu Mode Set and 3 00000...

Page 41: ...alibration Saves the parameters relevant to calibration They can be retrieved by Factory Set If a rest to Factory Settings was performing without saving the calibration parameters beforehand a new calibration might be necessary When the device is reset to Default Setting the param eters relevant for the proper operation are overwritten by default values With these values the device will not work T...

Page 42: ...ty to set the following properties to a defined status in order to test subsequent connected equipment Relay 1 Rel 1 open closed Relay 2 Rel 2 open closed Common Relay Rel 3 open closed Current of current loop Voltage for Analog Out 1 Voltage for Analog Out 2 File name Manual_FTC400_1 09KD181129CWI1V01 pdf ...

Page 43: ...The analog outputs 1 and 2 can be set to supply a voltage between 0V and 10V Note All test signals are permanently on until leaving the I O Test menu It is the responsibility of the expert to assure that the I O test does not interfere with the subsequent connected systems and processes in an unintended way File name Manual_FTC400_1 09KD181129CWI1V01 pdf ...

Page 44: ... points when sending the device Close gas ports to keep gas duct clean Preferably use black rubber caps that came with delivery Put the device in a suitable shockproof packing material Preferably use foam box that came with delivery Please attach a short note with a description of the problem or refer to prior mail correspon dece on this subject with Messkonzept Never open the housing of the FTC40...

Page 45: ...Check if the used test gas con centration accords with the set concentration Repeat proce dure If the error persists send the device to Messkonzept with description of error CAL DEV ER Calibration devi ation exceeding max allowed range 50000 ppm Check if the used test gas con centration accords with the set concentration Repeat proce dure If the error persists send the device to Messkonzept with d...

Page 46: ...for a couple of min utes The device is used out side the specified ambient tem perature or gas temperature range Consider the specifica tions If the error persists send the device to Messkonzept with description of error BU MIN ER Bridge voltage below specified range 1V Send the device to Messkonzept with descrip tion of error BU MAX ER Bridge voltage above specified range 11V Send the device to M...

Page 47: ... h or user selected Noise 1 of smallest range Drift at zero point 2 of smallest range per week Repeatability 1 of range Error due to change of ambient temper ature 1 of smallest range per 10 C Error due to change of flow at 80l h 1 of smallest range per 10l h Gas pressure Max 2000kPa 20 bar Error due to change of pres sure 800hPa 1 of smallest range per 10hPa Table 10 1 Specification of TC measure...

Page 48: ...Page 47 of 49 10 2 Specification IR Measurement Coming soon Please contact us for details info messkonzept de File name Manual_FTC400_1 09KD181129CWI1V01 pdf ...

Page 49: ...to ground max Load 800 Ohm max Resolution 16 bit Analog Output 1 2 Non isolated Voltage range 0 to 10V Load 1000 Ohm min Resolution 16 bit Relay 1 2 3 Isolated contact Maximum Voltage 36V Maximum Power 10W Typ Number of Switches 107 Power Supply Voltage range 18V to 36V DC Max Current 1A Typical Current 300mA Interface RS 232 Baud rate 19 2 kbaud Data 8 bit Parity None Stop 1 Flow control None Tab...

Page 50: ...25 C to 70 C 15 F to 160 F not condensing Vibration 10 to 150Hz 2g peak Protection class IP 65 only with cable or protective cape on all plugs Table 10 3 Environmental conditions 10 5 Dimensions Dimensions Depth 85mm Width 145mm Height 80mm without connectors Weight Max 1800g Mounting Wall mounting Table 10 4 Dimensions File name Manual_FTC400_1 09KD181129CWI1V01 pdf ...

Page 51: ...Chapter 11 Appendix Dimension Drawing File name Manual_FTC400_1 09KD181129CWI1V01 pdf ...

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