Trolex – At Trolex, we save lives. 60 years of our pioneering safety technology has helped keep workers protected in even the most challenging environments.
User Manual for TROLEX models including: TX6400, TX6400 Sentrum Monitoring System, Sentrum Monitoring System, Monitoring System, TX6363, TX6373, P5557.13, P5557.11, TX9042
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DocumentDocument TX6400 User Manual
TX6400 Sentrum Contents
1. Principle of Operation
4
2. Application
5
2.1 System Overview
5
2.1.1 Gas Detection
6
2.1.2 Flow Monitoring
7
2.1.3 Control and Data Collection 7
2.1.4 Sentrum System Block Diagram 8
3. Technical Details
9
3.1 TX6400 Sentrum Methane
Recovery Monitoring System 9
3.1.1 Monitors
9
3.1.2 Specification
9
3.2 TX6363 Infrared Methane
Sensor
11
3.2.1 Features
11
3.2.2 Specification
11
3.3 TX6363 Infrared Carbon Dioxide
Sensor
12
3.3.1 Features
12
3.3.2 Specification
12
3.4 TX6373 Oxygen Sensor
12
3.4.1 Features
12
3.4.2 Specification
12
3.5 P5557.13 Mass Flow System 13
3.5.1 Features
13
3.5.2 Specification
13
3.6 P5557.11 Dual Pump Controller 13
3.6.1 Features
13
3.6.2 Certification and Conformity
4. Installation
14
4.1 Main Enclosure
14
4.2 Transport Pipe Preparation 15
4.3 Gas Monitoring System
16
4.4 Flow Monitoring System
17
4.5 Power Supply
17
5. Commissioning
18
5.1 The TX9042 Programmable
Sensor Controller
20
5.1.1 TX9042 Signal Display
20
5.2 TX9042 Main Methane
Drainage Monitor Setup
21
5.3 Resetting the Accumulated
Mass Totals
22
5.4 Taking a Gas Sample for
Analysis
22
5.5 Updating the Analysis Values 23
5.6 Mass Flow Setup
23
5.7 Flow Monitoring
25
5.8 Gas Monitoring
25
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TX6400 Sentrum Contents
6. Operation and Maintenance 26
6.1 Monitoring Accuracy
26
6.2 Water Filter
26
6.3 Pump Maintenance
27
7. Modbus Address Registers 28
8. TX9042 Display Formats 31
Disclaimers
33
Trademarks
33
Contact Details
33
Document History
33
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1. Principle of Operation
TX6400 User Manual
RS485 Modbus output signal to transmit live data and interface with TX6400 surface control room SCADA system.
The Trolex TX6400 Sentrum Monitoring System is designed to provide the complete solution for Methane Recovery Monitoring applications. Using proven technology, the TX6400 was developed to measure methane at source and at strategic points throughout the methane pipe network.
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Complex algorithms are used to correct for the effects of non-methane hydrocarbon cross sensitivity, together with mass flow calculations, providing all the required information in one package to monitor the efficiency of the methane recovery system allowing purity problems to be resolved quickly, thus improving safety and methane capture.
Simple plug-in connections for monitoring allow for easy installation and maintenance. Using RS485 Modbus communication protocol, live data can be transmitted to the surface control room SCADA for continuous real time monitoring and data logging.
2. Application
· Coal Mine Methane Extraction · Coal Bed Methane Extraction · Abandoned Mine Methane Extraction · Gas to Energy Projects · Clean Development Mechanism (CDM) Projects · Methane Purity Monitoring · Underground monitoring at coal face boreholes · Underground monitoring at strategic points along the methane pipe network · Monitoring the methane purity and gas flow either before or after the surface
methane extraction pump
Group 1: TX6400
Supply Voltage: 12 V dc
2.1 System Overview
The system will monitor the quality and quantity of methane being extracted. A Gas Chromatograph Analysis of the gas to be monitored will be required before commissioning. The results from the Gas Chromatograph Analysis are entered in the TX9042 Programmable Sensor Controller. These values can be adjusted as gas concentrations change over time. Regular Gas Chromatograph Analysis will be required to verify system accuracy and enable gas composition adjustment. Sensor recalibration will be required on a six monthly basis. Refer to the individual sensor User Manuals and Product Data Sheets for specific information on the sensors.
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2.1.1 Gas Detection
Gas travelling along a transport pipe prior to being used, destroyed or stored will be sampled using infrared gas sensing equipment. Using mathematical algorithms, the methane purity will be calculated and displayed on the TX9042 Programmable Sensor Controller. The values displayed will be corrected for the effects of nonmethane hydrocarbons (ethane, propane and butane).
The gas will pass through a drying process to remove moisture prior to being sampled. Pressure and flow regulating equipment in conjunction with a sampling pump, will be used to ensure a constant sample is applied to the sensors. The gas sensors will also compensate for fluctuations in pressure and temperature.
The system is designed to calculate the methane concentration from hydrocarbon gas mixtures. Various algorithms are incorporated to extract the methane concentration from a hydrocarbon mixture by monitoring the infrared signature of the mixture, the temperature, the pressure and the oxygen concentration. The infrared signature from the Trolex TX6363 head is compensated for temperature and pressure and the compensated signature level is sent to the controller system, where it is treated mathematically to extract the methane content of the mixture.
The system uses an initial analysis of the gas mixture to extract the known amount of methane in that analysis. It then tracks the infrared signature of the mixture to continue monitoring the methane content. Under normal conditions, a complex ratio metric algorithm is used to extract the methane content.
Infrared sensors are molar sensors and so respond both to changes in the gas mixture composition and changes in the overall gas concentration. The system is tolerant to such changes in extracting the overall methane content.
In addition to monitoring methane gas the Sentrum system has options for monitoring the concentrations of both oxygen and carbon dioxide. These should be requested at the time of specifying and ordering your Sentrum system.
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2.1.2 Flow Monitoring
The velocity of gas travelling in the pipe network is monitored using a differential pressure sensor mounted via an orifice plate. In some applications it may be possible to use a Vortex type flow sensor but this dependent upon the moisture levels in the pipe network. The system will also monitor the temperature of the gas and the process pressure. The parameters methane purity, mass and volume will be calculated and displayed by the TX9042 Programmable Sensor Controller.
2.1.3 Control and Data Collection
The TX9042 has an RS485 Modbus communications port that can be connected to a suitable master terminal (PC with SCADA). Details of the Modbus structure are to be found in section 7 of this document. Most input and output parameters for the TX9042 can be viewed and adjusted via this link.
The TX9042 can also be set to locally data-log the various inputs. This information is stored locally in the TX9042 and can be accessed via the RS485 communications link. The TX9042 has a logging capacity of 22000 readings per channel.
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2.1.4 Sentrum Block Diagram
Example of a typical system.
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3. Technical Details
3.1 TX6400 Sentrum Methane Recovery Monitoring System
3.1.1 Monitors:
· Methane · Oxygen - optional · Carbon dioxide - optional · Gas velocity · Gas pressure · Gas temperature · System methane leakage
3.1.2 Specification:
Gas temperature limits for gas sensing:
Gas temperature limits for flow monitoring:
Pressure limits for gas sensing: Pressure limits for flow monitoring:
Data communications:
-10°C to 44°C
Up to 50°C
400 mbar (abs.) to 1200 mbar (abs.) 400 mbar (abs.) to 5 bar RS485 Modbus
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Example of a typical Sentrum system.
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3.2 TX6363 Infrared Methane Sensor
3.2.1 Features
· Poison resistant infrared sensor · Pre-calibrated plug-in sensing module for convenient replacement and servicing · Calibrated to allow over range conditions caused by non-methane hydrocarbons
(NMHCs) · Intrinsically safe for use in Group I and Group II hazardous areas
3.2.2 Specification
Sensing range: Ambient temperature limits:
Maximum drift: Repeatability: Response time (T90): Sensing element life:
0 to 100% vol methane -10°C to 44°C
±0.05% /month ±0.1% 20 secs 2 years
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3.3 TX6363 Infrared Carbon Dioxide Sensor
3.3.1 Features
· Poison resistant infrared sensor · Pre-calibrated plug-in sensing module for convenient replacement and servicing · Integral sensors for improved temperature and pressure compensation · Intrinsically safe for use in Group I and Group II hazardous areas
3.3.2 Specification
Sensing range: Ambient temperature limits:
Maximum drift: Repeatability: Response time (T90): Sensing element life:
0 to 100% vol carbon dioxide -10°C to 44°C ±0.01%/month ±0.1% 20 secs >2 years
3.4 TX6373 Oxygen Sensor
3.4.1 Features
· High Accuracy electrochemical sensing elements · Pre-calibrated plug-in gas sensing module for convenient replacement and
servicing · Convenient push button calibration of ZERO and SPAN · Intrinsically safe for use in Group I and Group II hazardous areas
3.4.2 Specification
Sensing range: Ambient temperature limits:
Repeatability: Response time (T63): Sensing element life:
0 to 25% vol oxygen -10°C to 50°C ±2% 5 secs >1 year
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3.5 P5557.13 Mass Flow System
3.5.1 Features
· Differential pressure to monitor flow · Pressure and temperature sensors · Installed using an orifice plate between pipe flanges for convenient installation
and servicing · Intrinsically safe for use in Group I and II hazardous areas
3.5.2 Specification
Measuring range:
Operating temperature:
Dependent upon calibration of orifice plate
Up to 50°C
3.6 P5557.11.xx Dual Pump Controller
3.6.1 Features
The TX6400 Methane Recovery Monitoring System is equipped with two intrinsically safe pumps located within the gas monitoring chamber to ensure a constant flow of gas is applied to the gas sensors. These pumps should only be powered by the P5557.11.xx Dual Pump Controller where `xx' refers to the region of certification -see product codes in section 3.6.2.
LED Off: LED Green:
LED Red:
Pump switched Off Pump running and healthy
Pump fail
3.6.2 Certification and Conformity
(N.B. This information only relates to the P5557.11.xx Dual Pump Controller. For certification and conformity information about the other components of the TX6400 Sentrum, please refer to their specific user manuals.)
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3.6.2.1
European Union and International Certification
ATEX (European Union) certification for use in underground mines
Standards: EN 60079-0:2009 EN 60079-11:2007 EN 50303:2000
IECEx (International) certification for use in underground mines
Standards: IEC 60079-0:2007-10 Edition 5 IEC 60079-11:2006 Edition 5
a.
Underground mines
Product Code: P5557.11.19
Ex Certificate Number:
Baseefa 10ATEX0029X IECEx BAS 10.0011X
Ex Certification Code:
I M1 Ex ia I Ma -20 °C Ta +40 °C
b.
The following Special Conditions for Safe Use apply to the above
ATEX and IECEx Certificates:
The pump controller and pump must be mounted inside an enclosure that offers a degree of ingress protection of at least IP54 according to IEC 60529 and be suitable for a mining environment.
3.6.2.2 Australia and New Zealand
IECEx (International) certification for use in underground mines and surface industry with explosive gas atmospheres in Australia (including Queensland) and New Zealand.
Standards: IEC 60079-0:2011 Edition 6.0 IEC 60079-11:2011 Edition 6.0
a.
Underground mines and Surface industry with explosive gas
atmosphere
Product Code: P5557.11.23
Ex Certificate Number: IECEx TSA 11.0029X
Ex Certification Code:
Ex ia I Ma -20 °C Ta +60 °C
Ex ia II T1 Ga -20 °C Ta +60 °C
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b) The following Conditions of Certification apply to the above IECEx Certificate:
i. It is a condition of safe use that the pump controller and pump must be mounted inside an enclosure that offers a degree of ingress protection of at least IP54 according to IEC 60529 and be suitable for Group I and Group IIA.
ii. It is a condition of safe use that the following parameters shall be taken into account during installation:
Input: Power Connections: T5 w.r.t T6 (0V) Ui Ci Li
For Group I For Group IIA
14.4 V 0 µF 0 µH
12.6 V 0 µF 0 µH
Output: Pump Motor 1 Connections: T7 w.r.t T8 (0V) Uo lo Po Ci Li Pump Motor 2 Connections: T11 w.r.t T12 (0V) Uo lo Po Ci Li
For Group I
14.4 V 615 mA 2.22 W 10.34 µF
0 µH
14.4 V 615 mA 2.22 W 10.34 µF
0 µH
For Group IIA
12.6 V 549 mA 1.73 W 10.34 µF
0 µH
12.6 V 549 m 1.73 W 10.34 µF 0 µH
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3.6.2.3 South Africa
MASC certification for use in underground mines
Standards: SANS (IEC) 60079-0:2009 SANS (IEC) 60079-11:2007
a.
Underground mines
Product Code:
Ex Certificate Number:
P5557.11.05
M/11-221X
Ex Certification Code:
Ex ia I Ma -20 °C Ta +40 °C
b) The following Special Conditions for Safe Use apply: The pump controller and pump must be mounted inside an enclosure that offers a degree of ingress protection of at least IP54 according to IEC 60529 and be suitable for a mining environment.
3.6.2.3 Eurasian Customs Union
Certification for use in underground mines
Standards: OCT 30852.0-2002 ( 60079-0:1998) OCT 30852.10-2002 ( 60079-11:1999)
a.
Underground mines
Product Code:
P5557.11.14
Ex Certificate Number: TC RU C-GB.05..01161
Ex Certification Code:
PO Ex ia I Ma X -20 °C Ta +40 °C
b) The following Special Conditions for Safe Use apply:
The pump controller and pump must be mounted inside an enclosure that offers a degree of ingress protection of at least IP54 according to IEC 60529 and be suitable for a mining environment.
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4. Installation
4.1 Main Enclosure
The Methane Monitoring System and Gas Flow System are located in the main enclosure. However, they will be interfaced with the methane drainage transport pipe independently of each other. The main enclosure houses the TX9042 Programmable Sensor Controller and Gas Sample Flow Regulator. The main enclosure is designed to be frame or wall mounted to eliminate vibration and movement which may affect the accuracy of the differential (pressure) flow sensor. It should be located within two metres of the gas connection points.
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4.2 Transport Pipe Preparation
1. Separate the two pipe flanges where the orifice plate is to be installed. Insert the orifice plate and bolt the two flanges and orifice plate together. Tighten as necessary.
2. Install the 2 x ¼" BSP threaded boss for methane sampling and fit one ¼" supplied tap.
3. Staple lock banjo fitting into each boss. 4. Ensure the tap is closed upon completion.
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4.3 Gas Monitoring System
1. Connect two of the supplied hoses from the staple lock fittings on the side of the main enclosure marked Gas Sample In and Gas Sample Out, to the staple lock fittings on the transport pipe and secure using the supplied staples.
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4.4 Flow Monitoring System
1. Connect the supplied hoses to the two orifice plate fittings taking note of which is connected to Hi and which is connected to Lo.
2. Connect the free end of the hoses to the corresponding staple lock fitting on the side of the main enclosure. Hi to FLOW Hi and Lo to FLOW Lo.
3. Connect the temperature probe cables to the appropriate terminals in the main enclosure as indicated on the supplied system drawings.
4.5 Power Supply
1. Remove the fuse from terminal F1 and connect a 12 V dc intrinsically safe power supply to terminals F1 and L1.
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5. Commissioning
This procedure assumes that the methane extraction process is running and methane is being transported through the methane pipe network.
Before fuse F1 is fitted, ensure that: 1. All electrical connections are secure. 2. All pneumatic connections are secure. 3. The cover on the gas sample chamber is secure. 4. The valve on the flow regulator is fully open. 5. Both switches on the dual pump controller are set to off. 6. The tap on the water filter is closed.
Please note that the differential pressure sensor has been factory configured to the information available at the time of manufacture. If the conditions have changed, then it will be necessary to reconfigure the differential pressure sensor. To do that a Hart communicator will be required. To use this: 1. Disconnect the wire marked "SIG FLOW" from terminal A6 on the TX9042
Programmable Sensor Controller. 2. Connect one wire of a Hart Protocol Communicator to Terminal A6. 3. Connect the other wire of a Hart Protocol Communicator to the wire marked
"SIG FLOW". 4. Fit fuse F1 and the Sentrum Methane Monitoring System will energise. 5. After the TX9042 Programmable Sensor Controller has initialised, it will go
to the main screen where all eight channels can be read. LED R4 on the Programmable Sensor Controller will remain lit. 6. Open both taps on the gas sample hose connection. The pressure gauge located on the gas sample chamber will indicate the expected pressure within the transport pipe. 7. Using the Dual Pump Controller, switch Pump 2 on. Ensure the LED for pump 2 is green and the R4 LED on the Programmable Sensor Controller has extinguished. On the flow regulator, note the volume of gas flowing to the gas sampling chamber. This volume should be >1 lpm and <3 lpm when pump 1 is running. 8. Adjust the flow using the potentiometer on the dual pump controller to obtain a flow between 1 lpm and 3 lpm.
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Checkpoint Never use the valve on the flow regulator to regulate flow when the system is using the intrinsically safe pumps to provide flow.
9. Switch pump 2 off and note that R4 LED on the Programmable Sensor Controller is lit.
10. Switch pump 1 on. Ensure the LED for pump 1 is green, the R4 LED on the Programmable Sensor Controller has extinguished and the volume flow is between 1 lpm and 3 lpm. The system is now pumping gas across the gas sensors.
11. To let the sensors stabilise it is recommended that the system be allowed to settle for 2 hours.
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5.1 The TX9042 Programmable Sensor Controller
The information below is in addition to the information found in the TX9042 Installation and Operating Data (IOD).
5.1.1 TX9042 Signal Display
The Main Signal display screen, replaces the standard signal display described in section 9.2 of the TX9042 IOD. This screen displays the following information:
Channel 1
Channel 2 Channel 3 Channel 4 Channel 5 Channel 6
Channel 7
Channel 8
Corrected methane concentration (%v/v)
Gas volume flow (l/s)
Methane volume flow (l/s)
Methane mass flow (kg/s)
Oxygen (%v/v)
Normalised gas volume flow (l/s)
Normalised methane volume flow (l/s)
Accumulated total gas mass (tonnes)
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Use the Cursor to select a channel number, press the Confirm key and the display will change to show the following detailed information:
Channel 1
Channel 2 Channel 3 Channel 4 Channel 5 Channel 6 Channel 7 Channel 8
Uncorrected methane concentration (%v/v)
Gas velocity (l/s) Gas temperature (°C) Line pressure (kpa)
Oxygen (%v/v) Carbon dioxide (v/v) Methane leakage (%v/v) Flow switch status
To return to the Signal Display Screen pressing the Escape key.
5.2 TX9042 Main Methane Drainage Monitor Setup
The configuration setting for the Methane Drainage Monitor (MDM) functions of the TX9042 are accessible from the "MDM Setup" menu.
1. Using the navigation keys on the TX9042, navigate to the main menu and scroll down to the bottom of this menu to the "MDM Setup".
2. Press the Confirm key to enter MDM Setup. The following functions are available from this menu:
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5.3 Resetting the Accumulated Mass Totals
Selecting and confirming the Reset option will reset the accumulated mass totals displayed on the main signal display screen.
5.4 Taking a Gas Sample for Analysis
For Sentrum to accurately track the fluctuating methane concentration in the gas transport pipe, it needs to acquire knowledge about the "Gas Signature" of the installation. This information is derived from gas chromatograph analysis of a gas sample collected from the installation.
To collect a sample of gas for analysis the following procedure must be followed: 1. Physically extract the sample of gas from
the main line extraction point. 2. Then enter the MDM Setup menu and
confirm that the sample has been taken. 3. Selecting and confirming the Sample
Taken option will save the uncorrected methane sensor output with the corresponding time and date. This information is used by the controller to calibrate the correction factors once the results of the analysis are available. 4. Information about the last sample taken can be viewed by selecting the View Sample option.
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5.5 Updating the Analysis Values
Once the results from the sample are available then the gas analysis values held in the controller should be updated.
1. From the MDM Setup menu select Enter Analysis.
2. The user is offered the option to change the sample reading, but this is not normally required and should be skipped. The methane concentration from the analysis results should be entered into the "Anlys" option. The controller will then correct the internal algorithm.
3. Entering this methane analysis will also update the original entry for Methane in the MDM Setup menu.
4. It is not necessary to adjust the values of the other hydrocarbons, these are not used by the algorithm in this configuration.
5. The date of the next scheduled gas analysis can be manually entered in the MDM Setup menu.
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5.6 Mass Flow Setup
The following parameters are calculated and displayed: · Methane Volume Flow (l/s) · Methane Mass Flow (kg/s) · Normalised Gas Volume Flow (l/s) · Normalised Methane Volume Flow (l/s) · Accumulative Total Gas Mass (tonnes)
To ensure their accuracy it is important that the TX9042 is configured with the correct system parameters: 1. Enter the system pipe diameter. 2. The gas parameter is the molecular
weight of the target gas. This is defaulted to methane at 16.04 g/mol. 3. The balance gas molecular weight is entered in most gases this will be Air at 28.96 g/mol. 4. The units parameter allows the user to select imperial or metric units. 5. The Methane correction can be enabled or disabled via the correction parameter. This can be useful during commissioning but should normally be set to On. 6. The Calib CH1 parameter allows the user to calibrate channel 1. This is an advanced function used during commissioning and should not be adjusted by the user. 7. Head Output is used during commissioning only.
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5.7 Flow Monitoring
When the system is securely mounted, checks need to be made to ensure the flow monitoring system is at zero when there is no flow in the transport pipe. 1. Switch on the previously installed Hart
Protocol Communicator (see section 5). 2. Temporarily disconnect the FLOW Hi
and FLOW Lo pneumatic hoses from the enclosure staple lock fittings. 3. Using the Hart Protocol Communicator, adjust the analogue output of the differential pressure sensor to 4 mA if required. Note that the output needs to be 4.00 mA to ensure flow monitoring accuracy. 4. When the 4.00 mA has been achieved, save this data to the DP sensor, disconnect the Hart Protocol Communicator and reconnect the pneumatic hoses. 5. Channels 2, 3, 5 and 6 will now be displaying expected values.
5.8 Gas Monitoring
The TX6373 oxygen sensor and TX6363 carbon dioxide sensors will be factory calibrated and will not require any initial setting-up on site.
The oxygen sensor will require periodic calibration and will require cell replacement after approximately one year. Refer to the TX6373 Installation and Operating Data manual for further information.
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6. Operation and Maintenance
6.1 Monitoring Accuracy
To ensure the Methane Monitor is accurate, the system will require regular Gas Chromatograph Analysis for comparison. The frequency of the Gas Chromatograph Analysis is determined by the stability of the gas composition. Adjusting the hydrocarbon parameters as described in section 5.1 will ensure system accuracy.
6.2 Water Filter
The water filter will remove water from the gas as it flows to the gas sample chamber. The rate at which the filter bowl will start to fill with water depends on how wet the gas is. The bowl will need emptying before it is full to stop water entering the flow regulator. 1. Switch the sample pump off. 2. Close the flow regulator valve fully. 3. Close the tap connected to the Sample
Gas In pipe. 4. Remove the pipe from the tap. 5. The vacuum in the water filter will now
reduce to atmospheric pressure and the tap on the water filter can be opened to let the water drain. 6. When the bowl is empty, close the tap. 7. Reconnect the Gas Sample In pipe and open the tap. 8. Fully open the Flow Regulator Valve. 9. Switch sample pump on.
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Checkpoint There may be a small drop in methane purity readings due to the process of draining the filter. This is temporary and will clear in a few moments.
6.3 Pump Maintenance
There are two pumps in the sampling system. Under normal use only one pump is required to draw a sufficient sample for analysis. The pumps should run under normal load for approximately 10 to 12 months. The second pump is intended as a standby pump in case of primary pump failure. It is recommended that pumps should be replaced prior to the 10 months life expectancy.
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7. Modbus Address Registers
Modbus Address:
Data:
00005 Write 1 Reset Accumulators
00006 Write 1 Initiates Methane Calibration Screen
00007 Write 1 indicates Sample Taken
00008 Write 0 for PD847 Sensor. Write 1 for PD857 Sensor
00029 Write 0 for 32 bit FP. Write 1 for 16 bit integer
00030 1 = Analysis Due
00035 1 = Display Volume Flow in Imperial Units
30001 Methane (uncorrected)
30002 Gas Velocity
30003 Gas Temperature
30004 Line Pressure
30005 Oxygen
30006 Carbon Dioxide
30007 Carbon Monoxide
30008 Flow Switch
30031..32 Corrected Methane
30033..34 Volume Flow
30035..36 Methane Mass Kg/s
30037..38 Total Mass Kg/s
30039..40 Accumulated Methane Mass
30041..42 Accumulated Total Gas Mass
30043..44 Uncorrected Methane
30045..46 NTP Total Gas Volume Flow (Channel 6 display)
30047..48 NTP CH4 Volume Flow (Channel 7 Display)
Data Type:
int int int int int int int int float float float float float float float float float
Unit:
%v/v m/sec
°C kpa %v/v %v/v ppm
%v/v See Note 1 kg/sec kg/sec tonnes tonnes %v/v See Note 1 See Note 1
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Modbus Address:
Data:
30053..50 Total Gas Volume Flow (Channel 2 Display)
30053..52 Gas Velocity m/s
30053..54 Head absorbance (0.5 = PD847 - 1.0 = PD857)
30055..56 Oxygen Level
30057..58 Normalisation Ratio
30059..60 Normal Transformation
30061..62 Actual Total Gas Volume Flow (Channel 3 Display)
30063..64 Corrected Methane at Analysis
40209 Pipe diameter
40210 Molecular weight of target gas
40211 Molecular weight of balance
40212 Atmospheric pressure
40213..14 C1 analysis
40215..16 C2 analysis
40217..18 C3 analysis
40219..20 C4 analysis
40221..22 C5 analysis
40223..24 C1 exponent
40223..26 C1 power
40227..28 C1 span
40229..30 Methane Analysis Absorbance
40233..34 Analysed_head_absorbance
40237..38 Transformation_coefficient
40261..62 Stored Transmitted C1 (U/C methane at analysis time)
40263 Analysis Interval
40264 Volume Flow Units
40265..66 Standard Temperature K
Data Type: float
Unit: See Note 1
float
m/sec
float
-
float
%v/v
float
-
float
%v/v
float
See Note 1
float word word word word float float float float float float float float float float float float
%v/v mm g/mol g/mol mbar %v/v %v/v %v/v %v/v %v/v
%v/v
word word float
months K
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Modbus Address: 40267..68
Note 1
Data:
Standard pressure
Modbus address 40264 sets the units: 0 = l/sec 1 = m3/hr 2 = m3/min 3 = m3/sec 4 = CFM (imperial)
Data Type: float
Unit: kpa
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8. TX9042 Display Formats
Channel Inputs
Channel:
Description:
Channel 1 Methane (uncorrected)
Channel 2 Gas velocity
Channel 3 Gas temperature
Channel 4 Line pressure
Channel 5 Oxygen
Channel 6 Carbon dioxide
Channel 7 Methane leakage
Channel 8 Flow switch
Units: 0 to 100% v/v 0 to 20 m/sec -20 to +80°C 0 to 200 kpa abs. 0 to 25% v/v 0 to 10% v/v 0 to 100% v/v Flow/No flow
Hardware: 4 to 20 mA or 0.4 to 2 V
4 to 20 mA PT100
4 to 20 mA or 0.4 to 2 V 4 to 20 mA or 0.4 to 2 V 4 to 20 mA or 0.4 to 2 V 4 to 20 mA or 0.4 to 2 V
Digital (Input 1)
Channel Displays
Channel:
Value:
Channel 1 Methane (corrected)
Channel 2 Actual volume flow
Channel 3 Actual pure methane flow
Channel 4 Instantaneous methane mass flow
Channel 5 Oxygen Channel 6 Normalised Volume
Flow
Channel 7 Normalised Pure Methane Flow
Channel 8 Accumulative Methane Mass Flow
Units: 0 to 100% v/v
0 to 99999 l/sec
0 to 99999 l/sec 0.00 Kg/s sec 0 to 25% v/v
0 to 99999 l/sec
0 to 99999 l/sec
0 to 99999 tonnes
Derived From:
Result of Methane correction algorithm (%vol methane)
Channel 2 input plus (user configurable pipe diameter)
Channel 1 display and Channel 2 Display
Output from Mass Flow Algorithm
As per Standard TX9042
Channel 2 display plus (Normalising Calculations)
Channel 3 display plus (Normalising Calculations)
Output from Mass Flow Algorithm
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TX6400-UM-EN Rev A 35
Individual Channel Displays - (from the front screen press right navigation key)
Channel:
Value:
Units:
Derived From:
Channel 1 Methane (uncorrected) 0 to 100% v/v
Channel 1 Input
Channel 2 Gas velocity
0 to 20 m/sec
Channel 2 Input
Channel 3 Gas temperature
-20 to +80°C
Channel 3 Input
Channel 4 Line pressure
0 to 200 kpa abs.
Channel 4 Input
Channel 5 Oxygen
0 to 25% v/v
Channel 5 Input
Channel 6 Carbon dioxide
0 to 10% v/v
Channel 6 Input
Channel 7 Methane leakage
0 to 100% v/v
Channel 7 Input
Channel 8 Flow switch
Flow/No flow
Channel 8 Input
Information that is Data Logged
Description:
1
Methane (uncorrected)
2
Gas velocity
3
Gas temperature
4
Line pressure
5
Oxygen
6
Carbon dioxide
7
Pure methane
Units: 0 to 100% v/v 0 to 20 m/sec -20 to +80°C 0 to 200 kpa abs. 0 to 25% v/v 0 to 10% v/v 0 to 100% v/v
8
Flow switch
Flow/No flow
Hardware: Channel 1 Input Channel 2 Input Channel 3 Input Channel 4 Input Channel 5 Input Channel 6 Input Result of methane correction algorithm (% vol methane) Channel 8 Input
36
TX6400-UM-EN Rev A
www.trolex.com
TX6400 User Manual
Disclaimers
The information provided in this document contains general descriptions and technical characteristics of the performance of the product. It is not intended as a substitute for and is not to be used for determining suitability or reliability of this product for specific user applications. It is the duty of any user or installer to perform the appropriate and complete risk analysis, evaluation and testing of the products with respect to the relevant specific application or use. Trolex shall not be responsible or liable for misuse of the information contained herein. If you have any suggestions for improvements or amendments, or find errors in this publication, please notify us at marketing@trolex.com.
No part of this document may be reproduced in any form or by any means, electronic or mechanical, including photocopying, without express written permission of Trolex. All pertinent state, regional, and local safety regulations must be observed when installing and using this product. For reasons of safety and to help ensure compliance with documented system data, only Trolex or its affiliates should perform repairs to components.
When devices are used for applications with technical safety requirements, the relevant instructions must be followed.
Trademarks
© 2013 Trolex® Limited. Trolex is a registered trademark of Trolex Limited. The use of all trademarks in this document is acknowledged.
Document History
Version Issue 01 Issue 02 Rev A
Date 9 July 2013 11 June 2018 14 Sept 2018
ECR Original publication 4460 4769
Contact Details
Trolex Ltd, Newby Road, Hazel Grove, Stockport, Cheshire, SK7 5DY, UK +44 (0) 161 483 1435 sales@trolex.com
www.trolex.com
TX6400-UM-EN Rev A 37