Trolex Sentro 8 User manual

TX9165 User Manual
TX9165-UM-EN-07 3
TX9165 Sentro 8 Sensorstation
Contents
1. Product Overview 5
1.1 Operating Features 5
1.2 Application 6
1.3 Product Options 7
1.4 Dimensions 8
1.4.1 TX9165 Sentro 8 Sensorstation
- Four Gas Ports 8
1.4.2 TX9165 Sentro 8 Sensorstation
- Eight Gas Ports 9
1.5 Technical Information 10
1.6 Electrical Details 12
1.7 Sentro Sensing Modules 13
1.7.1 Sentro eModules 14
1.7.2 Sentro rModules Remote
Sensing 19
2. Certification 20
3. Installing 24
3.1 Safety Precautions 24
3.2 Siting Recommendations 26
3.3 Connections 27
3.4 Connecting in Mining and
Tunnelling Areas 34
3.5 Sentro 8 Sensorstation
Sensing Module Positions 35
3.6 Datacomms 36
4. Setup and Calibration 37
4.1 Controls and Indicators 37
4.1.1 Navigation 39
4.2 Start-up Screen 40
4.2.1 Base Screens 40
4.2.2 Sensor Inputs Overview 42
4.2.3 Relay Outputs Overview 47
4.2.4 Audio/Visual Alarms
Overview 47
4.3 Main Setup Menu 48
4.3.1 Security 48
4.3.2 Display 49
4.3.3 Time and Date 51
4.3.4 Log 52
4.3.5 Datacomms Protocol 54
4.3.6 Reset Exposure 56
4.4 Sentro eModule Setup 58
4.4.1 Sentro eModules Calibrate 59
4.4.2 Setpoint 1 and Setpoint 2 63
4.4.3 Assign Fault 66
4.4.4 Assign Exposure Alarm 67
4.4.5 Status 68
4.5 Sentro rModule Setup 69
4.5.1 Scaling 70
4.5.2 Setpoint 1 and Setpoint 2 72
4.5.3 Assign Fault 74
4.5.4 Status 75
4.5.5 Calibrate PT100 76
4.5.6 Setup of an On/Off Input
rModule 76
4.5.7 Setup of an On/Off Diode
Input rModule 76
4.6 Output Relays Setup 78
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4 TX9165-UM-EN-07
4.6.1 Mode 78
4.6.2 Pulse Time 79
4.6.3 Assign Fault 79
4.6.4 And Function 80
4.6.5 Text 80
5. Audio/Visual Alarm
References 81
5.1 Alarm Severity Selection 81
5.2 Assign Fault 82
6. Diagnostics 83
6.1 Over Range Indication on a
Pellistor Gas Sensing
eModule 83
6.2 Absent Sensing Module
Message 84
6.3 Replacing a Sentro Sensing
Module 84
6.4 Low Supply Voltage 85
6.5 Latched Relay Message and
Relay Reset 85
7. Maintenance 86
7.1 Sentro eModules and
rModules 86
7.2 Checking the Response of
Gas Sensing eModules 86
7.3 Service Replacement
Sensing Modules 88
7.4 Replacing a Sentro Sensing
Module 88
7.5 Maintenance and
Calibration Log 91
7.6 Record Keeping 92
7.7 Protection Grid 92
7.8 Servicing and Repair 92
7.9 Disposal 93
8. Sentro 8 Battery Back-up 94
8.1 Intruduction 94
8.2 Battery Back-up 94
8.3 Battery 95
8.4 RS485 Repeater 95
8.5 Ethernet Converter 95
8.6 Battery Back-up Connections 96
8.7 Operation 96
8.7.1 Power-up 96
8.7.2 Power Down 97
8.8 Maintenance 98
8.8.1 Sentro 8 and Battery
Back-up - Check 98
8.8.2 Battery Back-up Discharge
- Test 98
8.8.3 Battery Back-up Cells
- Replace 99
8.9 Repairs 99
Disclaimers 100
Trademarks 100
Document History 100
Contact Details 100
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TX9165 User Manual
TX9165-UM-EN-07 5
1. Product Overview
TX9165 Sentro 8 Sensorstation
(four gas ports)
TX9165 Sentro 8 Sensorstation
(eight gas ports)
1.1 Operating Features
• Integrated eight channel sensing and control unit for environmental and
machine condition monitoring including
eModule
• Toxic gases
• Flammable gases
rModule
• Air flow
• Pressure
• Temperature
• Vibration
• Speed
• Rotation
• Most suitable 0.4 to 2 V and 4 to 20 mA inputs
• Pre-calibrated plug-in Sentro eModules and rModules can be user configured to
any combination of measuring parameter
• LCD screen
• Programmable built-in Audio/visual alarms
• RS485 Modbus datacomms for distributed monitoring of systems
• Four programmable output relay remote alarm warning and control functions
• Heavy duty, impact resistant housing to IP65
• EMC compliant
• STEL and TWA monitoring of selected gases
• Data logging on all channels
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6 TX9165-UM-EN-07
1.2 Application
Fixed point multisensor environmental monitoring and machine condition
monitoring for use in underground mining and general purpose applications.
General Purpose
TX9165.03
Application:
Supply voltage:
Remote sensors:
Output relay contacts:
Non-hazardous areas
24 V dc
85 to 265 V ac supply
(universal)
24 V dc supply
2 Amps, 230 V ac
Underground Mining
and Tunnelling
TX9165.01i
Application:
Supply voltage:
Remote sensors:
Output relay contacts:
Type of protection:
Category:
ATEX:
Can be installed in
underground hazardous areas
12 V dc from an approved
source
Exi approved,12 V dc supply
Suitable for, and clearance
compatible for, switching other
intrinsically safe circuits
Intrinsically safe, EX ia
M1
94/9/EC
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TX9165 User Manual
TX9165-UM-EN-07 7
1.3 Product Options
TX9165 Sentro 8 Sensorstation Mining Ex General Purpose
12 V dc TX9165.01 -
24 V dc - TX9165.03.102
85 to 265 V ac (universal) -TX9165.03.114
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8 TX9165-UM-EN-07
1.4 Dimensions
1.4.1 TX9165 Sentro 8 Sensorstation - Four Gas Ports
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TX9165 User Manual
TX9165-UM-EN-07 9
1.4.2 TX9165 Sentro 8 Sensorstation - Eight Gas Ports
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10 TX9165-UM-EN-07
1.5 Technical Information
Sensing modules: • Plug-in, pre-calibrated Sentro eModules and
rModules with standardised output data and
characterised compensation. Accommodation
for up to eight eModules and rModules
Protection classification: • Housing IP65
Operating temperature: • -10 to +40°C
Storage temperature: • -20 to +60°C
Humidity: • 0 to 95% non-condensing
Pressure: • 700 to 1300 mbar
Housing material: • Reinforced polymer, anti-static, suitable for use
in hazardous areas. EMC compliant
Weight: • 2.8 kg
Alarm indicators: • Confidence Alert flash and audible tone at 15
second intervals
• High-brightness, area warning, flashing alarm
and audible alarm
• Function configurable
Audible alarm: • High intensity audible sounder 95 dB at 300 mm
• Function configurable
• Mute function
Gas infusion: • Natural diffusion
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TX9165 User Manual
TX9165-UM-EN-07 11
Display: • 128 x 64 pixels, graphic LCD screen with
backlight illumination
• Alarm indicators for all eight sensor inputs
• TWA and STEL alarm displayed for selected
toxic gas sensing eModules
• Simultaneous readings of all sensor input levels
• Individual reading of all sensor input levels with
Min and Max data retention
• Graphic Trend display of individual sensor values
• Scrolling display of Logged data
Function programming: • Screen contrast adjustment
• Keycode security barrier
• Two independently programmable setpoint
alarm levels, selectable for Over, Under or
Window alarm functions for each sensor input
• Audio visual alarm functions
• Discrete alarms for General/High sensor signal
and Fault
• 24-hour clock and calendar
Data logging: • Automatic period logging
• 4000 readings per sensor with time, date and
alarm event report
Datacomms: • RS485 datacomms output supporting up to 32
Sentro 8 Sensorstations on a single Modbus
network in multidrop mode to a standard PC
• System reporting
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12 TX9165-UM-EN-07
1.6 Electrical Details
Description Mining Ex General Purpose
Supply voltage 12 V dc (+/- 10%) 24 V dc (+/- 10%)/
85 to 265 V ac
Supply current 200 mA (maximum loading including one pellistor eModule)
Output relays
Four independent alarms relays each programmable to any
alarm setpoint on any monitoring channel for preferred alarm
priority grouping
Relay contacts One changeover contact on each relay
Contact rating
Suitable for, and clearance
compatible for, intrinsically
safe circuits
2 Amps 230 V ac
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TX9165 User Manual
TX9165-UM-EN-07 13
1.7 Sentro Sensing Modules
Plug-in pre-calibrated eModules and rModules with standardised output data.
• Each eModule and rModule stores all the necessary data about its type,
identification, sensing range and specific calibration. This data is automatically
recognised by Sentro 8 Sensorstation when the eModule or rModule is
plugged into the module bay
• The eModule and rModule are pre-calibrated so they can be replaced at any
time with a replacement sensing module - usually of the same type, but an
alternative may be inserted if required
• User configurable coding slots at each module bay can be individually
configured using coding stops to prevent invalid sensing module combinations
• The eModule and rModule will identify itself when plugged into the module
bay, auto configuration will take place and the sensing module type will display
on the LCD screen
• All Sentro eModules and rModules 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
• There are two types of Sentro sensing module:
Sentro eModule
Integral Gas Sensor
Sentro rModule
Terminals for Connecting Remote Sensors
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14 TX9165-UM-EN-07
1.7.1 Sentro eModules
For the full range of Sentro eModules refer to the Sentro 8 Product Data Sheet
TX9165-DS-EN or contact the Trolex Sales Team: [email protected]
1.7.1.1 Flammable Gases • Poison Resistant Catalytic Sensor
The sensor will respond to most flammable gases and vapours
to varying degrees; it is normally calibrated to methane in
terms of %LEL or %volume.
TX6350 .240 .246 .244
Methane
CH4
Methane
CH4
Methane
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 to 3% v/v and 3% to 5% ±0.25% v/v
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 (0.44% v/v)
HIGH alarm 20% LEL (0.88% v/v)
Checkpoint
The pellistor is automatically protected against exposure to excessively high
concentrations of gas.
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TX9165 User Manual
TX9165-UM-EN-07 15
1.7.1.2 Toxic Gases • Electrochemical Cells
Selected toxic gas eModules are equipped with automatic
STEL/TWA calculation in accordance with COSHH.
TX6350 .250.50 .250.250 .250.500 .251 .252
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 500 ppm 0 to 50 ppm 0 to 20 ppm
Linearity ±2% FS
Drift 2% per month
Repeatability ±2%
Response
time T63% <20 secs <20 secs <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 30 ppm 30 ppm 5 ppm 5 ppm
HIGH alarm 30 ppm 100 ppm 200 ppm 10 ppm 10 ppm
STEL & TWA 200 ppm 200 ppm 200 ppm 10 ppm 5 ppm
30 ppm 30 ppm 30 ppm 5 ppm 2 ppm
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Toxic Gases • Electrochemical Cells - continued
TX6350 .254 .255 .257 .259 .261
Nitrogen
Dioxide
NO2
Chlorine
CL2
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 ±5% FS ±5% FS ±2% FS
Drift 2%
per month
2%
per month
10%
per year
2%
per month
2%
per month
Repeatability ±2%
Response
time T63% <20 secs <20 secs N/A <20 secs <70 secs
Operating life 2 years 2 years 1 year 2 years 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 N/A N/A 10 ppm N/A
3 ppm 0.5 N/A 3 ppm N/A
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TX9165 User Manual
TX9165-UM-EN-07 17
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 (TX6351.259) 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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18 TX9165-UM-EN-07
1.7.1.3 Carbon Dioxide/Methane Gases • Infrared Sensor
This 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 .278 .279
Methane
CH
4
Methane
CH
4
Methane
CH
4
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 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
±0.5% 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% condensing
Operating
temperature
-10 to +40°C
GENERAL alarm 1.25% v/v 10% LEL 25% v/v 1.25% v/v 25% v/v
HIGH alarm 2.5% v/v 20% LEL 50% v/v 2.5% v/v 50% v/v
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. The sensor should be powered-up and the nitrogen applied for at
least 5 minutes to ensure that the sensor has stabilised.
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TX9165 User Manual
TX9165-UM-EN-07 19
1.7.2 Sentro rModule Remote Sensing
Sentro rModules function in the same way as eModules and
incorporate screw terminals to accept direct input connections
of cables from remote analogue or digital sensors. A sensor
power supply source is also provided at the rModule terminals
where appropriate.
All eight positions (A to H) in the Sentro 8 Sensorstation
can be fitted with rModules in positions where no eModules are being used.
TX9160.301 4 to 20 mA Industrial standard analogue sensor
input; 2 and 3 wire options
TX9160.303 0.4 to 2 V
Voltage input signals, analogue
sensor input; 2 and 3 wire
connections
TX9160.306 PT100 Standard PT100 temperature
monitoring with line compensation
TX9160.501 ON/OFF
NAMUR proximity switch with
line-fault monitoring or conventional
contacts; pressure switches, limit
switches, etc
TX9160.502 ON/OFF & Diode
ON/OFF inputs from contacts with
series diode for open circuit and
short circuit line fault monitoring
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20 TX9165-UM-EN-07
2. Certification
Europe Certification (ATEX)
TX9165.01.i Sentro 8 Sensorstation (Group 1)
Ex Certificate Number: SIRA 09ATEX2285X
Ex Certification Code: I M1 Ex ia I Ma
General Conditions for Safe Use – Prior to installation, it is
essential that the 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 Ltd.
Cable glands used with this equipment must maintain an ingress
protection of at least IP54.
ATEX directive 94/9/EC
EMC directive 2004/108/EC
Special Conditions for Safe Use of Sentro eModules and rModules
The minimum ingress protection stated in the Ex-certificates for the Sentro
eModules and rModules are satisfied when mounted in the Sentro 8 Sensorstation,
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 eModules
and rModules are listed below:
eModule - Flammable (Group I) SIRA 10ATEX2046U
eModule - Toxic (Group I) SIRA 08ATEX2097U
eModule - Infrared (Group I) SIRA 10ATEX2356U
rModule - (Group I) SIRA 10ATEX2032U
Attention is drawn to the following conditions within the rModule Ex-certificates:
For the purpose of this certificate, a P+F inductive sensor to PTB00 ATEX 2048X to
Category II 1G Ex ia IIC T6 connected to terminals 1m and 2m of a TX9160.01i.501
NAMUR input module may be considered equivalent to Category I M1. The sensor
shall be installed in such a manner as meets the requirements of Group I e.g. the
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