Trolex Sentro 1 TX6351 User manual
P5536.1600 rev D 1
TX6351 • TX6352
Sentro 1 Universal Gas Detector
Leading safety technology
User Manual
TX6351 • TX6352 User Manual
P5536.1600 rev D 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
2.1 Newer Sentro 1 Models with Red
Labels (designated .35) 18
2.2 Older Sentro 1 Models with
Yellow Labels (not designated
.35) 20
3. Installation 23
3.1 Safety Precautions 20
3.2 Tools and Test
Equipment Required 24
3.3 Siting Recommendations 25
3.4 Connections 26
3.4.1 0.4 to 2 V / 2 to 10 V Analogue
Output Signal 26
3.4.2 4 to 20 mA Analogue
Output Signal 27
3.4.4 Contact Output Signal 28
3.4.5 RS485 Data Output Signal 29
3.5 Connecting in Hazardous
Areas 30
4. Setup and Calibration 31
4.1 Controls and Indicators 31
4.2 Main Display 33
4.3 Security Code Access 34
4.4 Main Menu 35
4.4.1 Calibrate 36
4.4.2 Sentro 1 Setup 39
4.4.3 Output Setup 41
4.4.4 Modbus 44
4.4.5 Module Setup 44
4.4.6 Support 47
5. Diagnostics and
Maintenance 48
5.1 Diagnostic Messages 48
5.2 Maintenance 49
5.3 Maintenance and
Calibration Log 52
5.4 Disposal 53
Disclaimers 53
Trademarks 54
Contact Details 54
Document History 54
4 P5536.1600 rev D
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
• LCD readout and visual LED alarm indicators
• Choice of output signal format
• Heavy duty housing to IP65
• EMC compliant
• STEL and TWA monitoring for selected gases
TX6351 • TX6352 User Manual
P5536.1600 rev D 5
1.2 Application
Fixed point gas detection for safety monitoring in hazardous areas and general purpose
applications.
Underground Mining and Tunnelling
Ex ia I Ma
TX6351.01i
TX6352.01i
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
Mining Ex ia
Certification Certification
Four-wire connection
(older models with yellow
labels)
(newer models with red
labels)
TX6351.01i
0.4 - 2.0 V dc .11 .35.05
4 - 20 mA .12 .35.19
Dual Relay NC .14
Dual Relay NO .17
IECEx (AUS) GrpI EAC GrpI ATEX/IECEx GrpI MASC GrpI
.06 MASC/IECEx GrpI
.14 ATEX/IECEx/UKEX GrpI .19
.05RS-485 .15
TX6352.01i Two-wire line powered
4 - 20 mA loop .12
General Purpose
Four-wire connection Button configuration
TX6351.03.00
4-20mA .12 Internal buttons .01
Dual Relay NC .14 External buttons .02
Dual Relay NO .17
RS-485 .15
2-10Vdc .16
TX6352.03.00 Two-wire line powered
4 - 20 mA .12
6 P5536.1600 rev D
1.4 Dimensions
TX6351 • TX6352 User Manual
P5536.1600 rev D 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 15 % to 90 % non-condensing
Protection classification Dust and waterproof to IP65. Gas Port: IP54.
Housing material Reinforced polymer with static charge dissipation
Nett weight 530 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 (IEC 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.
8 P5536.1600 rev D
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 and TWA Automatic setting 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 / 2 to 10 V
4 to 20 mA
Dual relay contacts. NO or NC to specification
RS485 Modbus datacomms
TX6351 • TX6352 User Manual
P5536.1600 rev D 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 Ω 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 NC/NO
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 Ω
Type of Sensor: Toxic only
TX6351 3/4 wire. Remote powered
2 to 10 V analogue output
Supply voltage: 14 to 28 V
Minimum line load: 10 KΩ
Type of sensor: Toxic Flammable Infrared
Supply current @ 24 V: 20 mA 60 mA 80 mA
10 P5536.1600 rev D
Mining and Tunnelling
TX6351 3/4 wire. Remote powered
4 to 20 mA analogue output
Supply voltage: 10 to 14 V
Max. line load: 220 Ω 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 NC/NO
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 KΩ
Type of sensor: Toxic Flammable Infrared
Supply current @ 12 V: 20 mA 60 mA 80 mA
TX6352 2 wire. Line powered
4 to 20 mA analogue output
Supply voltage: 10 to 14 V
Max. line load: 90 Ω
Type of sensor: Toxic only
This manual suits for next models
1
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