Trolex TX6351 User manual

TX6351 • TX6352 User Manual
P5536.1600 rev A 3
TX6351 • TX6352 Sentro 1 Universal Gas Detector
Contents
1. Product Overview 4
1.1 Operating Features 4
1.2 Application 5
1.3 Product Options 5
1.4 Dimensions 6
1.5 Technical Information 7
1.6 Electrical Details 9
1.7 Sentro eModules 11
2. Certification 18
3. Installation 20
3.1 Safety Precautions 20
3.2 Tools and Test
Equipment Required 21
3.3 Siting Recommendations 21
3.4 Connections 23
3.4.1 0.4 to 2 V Analogue
Output Signal 23
3.4.2 4 to 20 mA Analogue
Output Signal 24
3.4.3 5 to 15 Hz Output Signal 25
3.4.4 Contact Output Signal 25
3.4.5 RS485 Data Output Signal 26
3.5 Connecting in Hazardous
Areas 27
4. Setup and Calibration 28
4.1 Controls and Indicators 28
4.2 Main Display 30
4.3 Security Code Access 31
4.4 Main Menu 32
4.4.1 Calibrate 33
4.4.2 Sentro 1 Setup 36
4.4.3 Output Setup 38
4.4.4 Modbus 41
4.4.5 Module Setup 41
4.4.6 Support 44
5. Diagnostics and
Maintenance 45
5.1 Diagnostic Messages 45
5.2 Maintenance 46
5.3 Maintenance and
Calibration Log 49
5.4 Disposal 50
Disclaimers 51
Trademarks 51
Contact Details 51
Document History 51
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4 P5536.1600 rev A
1. Product Overview
TX6351 3/4 wire device with separate output signal and power lines.
Can be used with any Sentro eModule
TX6352 2-wire line powered 4 to 20 mA output signal.
Can ONLY be used with electrochemical Sentro eModules
1.1 Operating Features
• Fixed sensor for detection of Toxic Gases and Flammable Gases
• Exclusive pre-calibrated plug-in gas sensing modules for many types of gas and
climatic conditions
• LCD readout and visual LED alarm indicators
• Choice of supply voltage and output signal format
• Heavy duty housing to IP65, EMC compliant
• STEL and TWA monitoring for selected gases
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TX6351 • TX6352 User Manual
P5536.1600 rev A 5
1.2 Application
Fixed point gas detection for safety monitoring in hazardous areas and general
purpose applications.
Underground Mining andTunnelling
Ex ia I Ma
TX6351.01
TX6352.01
Supply Voltage: 12 V dc from an
approved power source
Type of protection:
Intrinsically safe. Ex ia
Category: I M1
General Purpose
TX6351.03
TX6352.03
Supply Voltage: 24 V dc
1.3 Product Options
4-wire connection Mining Ex ia General Purpose
0.4 to 2 V output TX6351.01.11 -
4 to 20 mA output TX6351.01.12 TX6351.03.12
5 to 15 Hz output TX6351.01.13 -
Contact output TX6351.01.14 TX6351.03.14
RS485 output TX6351.01.15 TX6351.03.15
*2-wire line powered Mining Ex ia General Purpose
4 to 20 mA output TX6352.01.12 TX6352.03.12
*For use with Toxic Gas Sentro eModules only
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6 P5536.1600 rev A
1.4 Dimensions
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TX6351 • TX6352 User Manual
P5536.1600 rev A 7
1.5 Technical Information
Ambient temperature limits -20 to +40°C
Storage temperature -20 to +60°C
Ambient pressure 800 to 1100 mbar
Humidity 90% non-condensing
Protection classification Dust and waterproof to IP65. Gas Port: IP54.
Housing material Reinforced polymer
Nett weight 150 g
Cable entries 2 x M20
Electrical connections 4 mm barrier/clamp terminals
Conductors A maximum of two per terminal
Conductor size A maximum of 2.5 mm²
Terminal torque 2.4 Nm maximum
Information display 128 x 64 dot graphic backlit LCD
Vibration limits Vibration limits (EN 60079-29-1):
• 10 to 30 Hz - 1.00 mm total excursion
• 31 to 150 Hz - 19.6 m/s2acceleration peak
Impact limits 20 joules (housing)
Calibration and setup Digitally controlled ZERO and SPAN pushbutton
setting
Signal fix The analogue output signal of the sensor is fixed
during calibration to prevent false alarms from
being initiated
Fault indication Under range signal transmitted and fault display
for:
• Loss of communications from the sensing
module
• Sensing module absent for more than 10
seconds
• Sensor over-range protect
Key coding Coding stops prevent insertion of a non-valid
sensing module.
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8 P5536.1600 rev A
Alarms Programmable GENERAL alarms and HIGH
alarms with an LED indicator.
The two adjustable alarm setpoints are preset
during manufacture to default values appropriate
to the type of sensor, determined by the sensing
module being used.
STEL andTWA Automatic calibration of STEL and TWA limits to
EH40 standards.
STEL: Exposure over 15-minute successive
periods
TWA: Exposure over a continuous rolling 8-hour
period
Output signals 0.4 to 2 V
4 to 20 mA
5 to 15 Hz
Dual contacts
RS485 Modbus datacomms
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TX6351 • TX6352 User Manual
P5536.1600 rev A 9
1.6 Electrical Details
General Purpose
TX6351 3/4 wire. Remote powered
4 to 20 mA analogue output
Supply voltage: 18 to 28 V
Max. line load: 500 R at 24 V
Type of sensor: Toxic Flammable Infrared
Supply current: 40 mA 40 mA 60 mA
TX6351 3/4 wire. Remote powered
Dual output contacts
Supply voltage: 20 to 28 V
Type of sensor: Toxic Flammable Infrared
Supply current: 35 mA 45 mA 60 mA
TX6351 3/4 wire. Remote powered
RS485 datacomms output
Supply voltage: 14 to 28 V
Line: Modbus protocol
Type of sensor: Toxic Flammable Infrared
Supply current: 40 mA 40 mA 60 mA
TX6352 2 wire. Line powered
4 to 20 mA analogue output
Supply voltage: 18 to 28 V
Max. Line Load: 300 R
Type of Sensor: Toxic only
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10 P5536.1600 rev A
Mining and Tunnelling
TX6351 3/4 wire. Remote powered
4 to 20 mA
Supply voltage: 10 to 14 V
Max. line load: 220 R maximum @ 12 V dc
Type of sensor: Toxic Flammable Infrared
Supply current @ 12 V: 48 mA 70 mA 91 mA
TX6351 3/4 wire. Remote powered
Dual output contacts
Supply voltage: 10 to 14 V
Type of sensor: Toxic Flammable Infrared
Supply current @ 12 V: 60 mA 85 mA 105 mA
TX6351 3/4 wire. Remote powered
RS485 datacomms output
Supply voltage: 10 to 14 V
Line: Modbus protocol
Type of sensor: Toxic Flammable Infrared
Supply current @ 12 V: 25 mA 60 mA 80 mA
TX6351 3/4 wire. Remote powered
0.4 to 2 V analogue output
Supply voltage: 10 to 14 V
Min. line load: 10 KR
Type of sensor: Toxic Flammable Infrared
Supply current @ 12 V: 20 mA 60 mA 80 mA
TX6351 3/4 wire. Remote powered
5 to 15 Hz analogue output
Supply voltage: 10 to 14 V
Max. line load: Opto isolated to 2 mA maximum
Type of sensor: Toxic Flammable Infrared
Supply current @ 12 V: 20 mA 60 mA 80 mA
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TX6351 • TX6352 User Manual
P5536.1600 rev A 11
TX6352 2 wire. Remote powered
4 to 20 mA analogue output
Supply voltage: 10 to 14 V
Max. line load: 90 R
Type of sensor: Toxic only
1.7 Sentro eModules
Plug-in pre-calibrated modules with standardised output data.
• Each module stores all the necessary data about its type identification, sensing
range and specific calibration. This data is automatically recognised by Sentro
when the module is loaded into the module bay.
• The modules are pre-calibrated so can be substituted at any time by a
replacement module – usually of the same type, but an alternative may be
inserted if required.
• Insert coding stops to prevent invalid module combinations.
• The sensing module will identify itself when plugged into the sensor housing
and auto configuration will take place.
• All Sentro Modules have two output alarm signals for GENERAL alarm and
HIGH alarm. Default values are entered during manufacture and these can be
changed to preferred values.
• The alarm signals can be set to illuminate built-in flashing LED indicators.
• The signals can operate the two GENERAL alarm and HIGH alarm relays on the
CONTACT OUTPUT version of Sentro 1.
Gas Sensor
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12 P5536.1600 rev A
Flammable gases • Poison resistant catalytic sensor
The sensor can be configured to respond to many flammable
gases and vapours. It is usual to calibrate to methane in
terms of %LEL or %volume.
TX6350 .240 .246 .244
Methane CH4Methane CH4Methane CH4
Sensing element Poison resistant pellistor with active temperature/humidity
compensation
Sensing range 0 to 100% LEL 0 to 4% v/v 0 to 5% v/v
Linearity Linear up to 3% v/v 3% to 5% ±0.25%
Max. Drift @ 25°C ±0.25% CH4 v/v per month
Response time (T63) <15 secs
Response time (T90) <20 secs
Sensing element life >5 years in clean atmosphere
Warm up time <5 mins in air or 1% v/v CH4 (to 95% of stated accuracy)
GENERAL alarm 10% LEL (.240) 1.25% (.246) 1.25% (.244)
HIGH alarm 20% LEL (.240) 2.00% (.246) 2.00% (.244)
Checkpoint
Not suitable for use with the TX6352 4 to 20 mA two wire, line powered version
of Sentro.
Checkpoint
The pellistor is automatically protected against exposure to excessively high
concentrations of gas.
Section 4.4.5
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TX6351 • TX6352 User Manual
P5536.1600 rev A 13
Toxic gases • Electrochemical cells
Selected toxic gas modules are equipped with automatic
STEL/TWA calculation in accordance with EH40.
TX6350 .250.50 .250.250 .250.300 .250.500 .251 .252
Carbon
Monoxide
CO
Carbon
Monoxide
CO
Carbon
Monoxide
CO
Carbon
Monoxide
CO
Hydrogen
Sulphide
H2S
Sulphur
Dioxide
SO2
Sensing
element Electrochemical cell
Sensing
range
0 to
50 ppm
0 to
250 ppm
0 to
300 ppm
0 to
500 ppm
0 to
50 ppm
0 to
20 ppm
Linearity ±2% FS
Drift 2% per month
Repeatability ±2%
Response
time T63% <20 secs <30 secs <20 secs
Operating life 2 years
Relative
humidity 15 to 90% non-condensing
Operating
temperature -10 to +40°C
GENERAL
alarm 15 ppm 25 ppm 25 ppm 25 ppm 5 ppm 5 ppm
HIGH alarm 30 ppm 100 ppm 100 ppm 200 ppm 10 ppm 10 ppm
STEL & TWA 200 ppm 200 ppm 200 ppm 200 ppm 10 ppm 5 ppm
30 ppm 30 ppm 30 ppm 30 ppm 5 ppm 2 ppm
Section 4.4.5
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14 P5536.1600 rev A
Toxic gases • Electrochemical cells - continued
Selected toxic gas modules are equipped with automatic
STEL/TWA calculation in accordance with EH40.
TX6350 .254 .254.10 .257 .259 .261
Nitrogen
Dioxide
NO2
Nitrogen
Dioxide
NO2
Oxygen
O2
Nitric Oxide
NO
Hydrogen
H2
Sensing element Electrochemical Cell
Sensing range 0 to 20 ppm 0 to 10 ppm 0 to 25% 0 to 50 ppm 0 to
1000 ppm
Linearity ±2% FS ±5% FS ±2% FS
Drift 2% per month 10%
per year 2% per month
Repeatability ±2%
Response time
T63% <20 secs N/A <20 secs <70 secs
Operating life 2 years 1 year 2 years
Relative
humidity 15 to 90% non-condensing
Operating
temperature -10 to +40°C
GENERAL
alarm 5 ppm 2.5 ppm 19% (under) 5 ppm 250 ppm
HIGH alarm 10 ppm 5 ppm 23% (over) 20 ppm 500 ppm
STEL & TWA 5 ppm 5 ppm N/A 10 ppm N/A
3 ppm 3 ppm N/A 3 ppm N/A
Section 4.4.5
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TX6351 • TX6352 User Manual
P5536.1600 rev A 15
Checkpoint
Toxic gas Sentro eModules have a very low power consumption, enabling 4 to 20 mA two
wire TX6352 line-powered version of Sentro to be used.
Checkpoint
All values listed are nominal and slight variations may occur depending upon operating
conditions.
• The natural level of oxygen available in the atmosphere is influenced by relative
humidity and temperature. The oxygen sensor will react to these changes.
• Sudden changes in atmospheric pressure will also cause temporary instability in
electrochemical sensors which may exceed 60 seconds.
• Long periods of use in extremely high or low humidity may affect the response of the
sensor and shorten the life of electrochemical sensors.
• Nitric oxide sensors must be continuously powered to maintain calibration stability.
If power has been absent for more than 10 minutes, it may take 24-48 hours for the
sensor to restore stability. Do not calibrate until the output signal is steady.
• The presence of high levels of carbon dioxide (over 5%) may have a minor effect on
the accuracy of the oxygen sensor.
Checkpoint
Periodic calibration of the gas sensor should be carried out whilst it is in service. For
oxygen and carbon monoxide gas sensors Trolex recommends that this is carried out
every 3 weeks. For other gas sensors Trolex recommends that this is carried out in
accordance with best practice for the industry where the gas sensor is being used, and
should take into consideration local operating conditions.
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16 P5536.1600 rev A
Carbon Dioxide/Methane Gases • Infrared sensor
The sensor is highly specific to the selected gas and exhibits
consistent sensing accuracy with superior long-term stability.
The linear response means that it can be calibrated for low gas
concentrations and high concentrations up to 100% by volume.
TX6350 .243 .245 .242 .253 .278 .279
Methane
CH
4
Methane
CH
4
Methane
CH
4
Carbon
Dioxide
CO
2
Carbon
Dioxide
CO
2
Carbon
Dioxide
CO
2
Sensing element Infrared
Sensing range
0 to
5% v/v
0 to
100% LEL
0 to
100% v/v
0 to
2% v/v
0 to
5% v/v
0 to
100% v/v
Zero drift
±0.05% v/v
per month
±1% LEL
per month
±0.5% v/v
per month
±0.05% v/v per
month
±1%
v/v per
month
Repeatability ±0.1% v/v ±2% LEL ±2% v/v ±0.05% v/v ±2% v/v
Response time
T63%
<15 secs
Response time
T90%
<30 secs
Operating life <5 years
Relative
humidity
15 to 90% non-condensing
Operating
temperature
-10 to +40°C
GENERAL
alarm
1.25% v/v 10% LEL 25% v/v 0.5% v/v 1.25% v/v 25% v/v
HIGH alarm 2.5% v/v 20% LEL 50% v/v 1 % v/v 2.5% v/v 50% v/v
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TX6351 • TX6352 User Manual
P5536.1600 rev A 17
Checkpoint - Carbon Dioxide Sensors
Normal atmosphere contains carbon dioxide which will affect the sensor signal so
nitrogen gas must be used to accurately calibrate the zero value. Power should
be applied to the sensor and the nitrogen applied for at least 5 minutes to ensure
that the sensor has stabilised.
Checkpoint
Not suitable for use with the TX6352 4 to 20 mA two wire, line powered version
of Sentro 1.
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18 P5536.1600 rev A
2. Certification
2.1 Europe (ATEX)
Ex certified for use in M1 applications:
Europe (ATEX):
TX6351.01i.xx/TX6352.01i.xx
Ex Certificate number: SIRA09ATEX2352X
Ex Certification code: I M1 Ex ia I Ma (20°C ≤ Ta ≤ +40°C)
Important – Prior to installation, it is essential that the user
refers to the relevant certificate to ensure that the termination
and cable parameters are fully complied with and are
compatible with the application. Copies of certificates
are available from www.trolex.com.
ATEX directive 94/9/EC
EMC directive 2004/108/EC
Special Conditions for Safe Use
The minimum ingress protection stated in the Ex-certificates for the Sentro
eModules are satisfied when mounted in the Sentro Gas Detector, as are the
conditions for impact protection and external fuse protection in the case of the
infrared eModule.
The Ex-certificates associated with the Sentro Modules are listed below:
eModule Flammable Group I SIRA 10ATEX2046U
eModule Toxic Group I SIRA 08ATEX2097U
eModule Infrared Group I SIRA 10ATEX2356U
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TX6351 • TX6352 User Manual
P5536.1600 rev A 19
2.2 Russia (Customs Union)
Ex Certificate number: TC RU C-GB.ГБ05.B.00616
Ex Certification code: PO Ex ia I Ma X
Conditions of Use
Prior to installation, it is essential that user refers to the above certificate for any
specific conditions of use. The user must ensure that the termination and cable
parameters are fully complied with and are compatible with the application. Copies
of certificates are available from Trolex.
2.3 South Africa (MASC)
Ex Certificate number: MASC M/11-419X
Ex Certification code: Ex ia I Ma
General Conditions for Safe Use
Prior to installation, it is essential that user refers to the above certificate to
ensure that the termination and cable parameters are fully complied with and are
compatible with the application. Copies of certificates are available from Trolex.
2.4 India (CIMFR)
Test report number: CIMFR/TC/P/H738
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20 P5536.1600 rev A
2.5 Australia (IECEx)
Ex certified for use in Ma applications:
Australia (IECEx):
TX6351.01i.xx/TX6352.01i.xx
Ex Certificate number: IECEx ITA 14.0006X
Ex Certification code: Ex ia I Ma
Conditions of Safe Use
The following safety parameters are applicable to the Sentro 1 Sensor/Transmitters:
Model Terminals Input Parameters
Ui li Ci Li Pi
TX6351.01i.11
and
TX9081.01i.11
5 WRT 6 14.4 V * 1 * 2 * 3 -
1 WRT (2 or 3) - - - - -
TX6351.01i.12
and
TX9081.01i.12
5 WRT 6 14.4 V * 1 * 2 * 3 -
1 WRT (2 or 3) - - - - -
TX6351.01i.15
and
TX9081.01i.15
5 WRT 6 14.4 V * 1 * 2 * 3 -
1 WRT 2
2 WRT 3 - - - - -
TX6351.01i.14
and
TX9081.01i.14
5 WRT 6 14.4 V * 1 * 2 * 3 -
1 WRT 2 30 V * 1 0 0 -
3 WRT 4 30 V * 1 0 0 -
TX6351.01i.13
and
TC9081.01i.13
5 WRT 6 14.4 V * 1 * 2 * 3 -
1 WRT 2 16.5 V - 0 0 2.5 W
TX6352.01i.12 1 WRT 2 14.4 V * 1 * 2 * 3 -
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