Trolex Sentro 1, User Manual

Page 1: ...www trolex com TX6351 TX6352 Sentro 1 Universal Gas Detector...

Page 2: ...Output Signal 26 3 4 2 4 to 20 mA Analogue Output Signal 27 3 4 3 5 to 15 Hz Output Signal 28 3 4 4 Contact Output Signal 28 3 4 5 RS485 Data Output Signal 29 3 5 Connecting in Hazardous Areas 30 4 S...

Page 3: ...and TWA monitoring for selected gases 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 T...

Page 4: ...imum 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 s2 acceleration peak Impact limits 20...

Page 5: ...ts RS485 Modbus datacomms 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 Fl...

Page 6: ...2 V 20 mA 60 mA 80 mA 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...

Page 7: ...ne powered version of Sentro Checkpoint The pellistor is automatically protected against exposure to excessively high concentrations of gas Section 4 4 5 Toxic gases Electrochemical cells Selected tox...

Page 8: ...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 hum...

Page 9: ...be calibrated for low gas concentrations and high concentrations up to 100 by volume TX6350 243 245 242 278 2 278 279 Methane CH4 Methane CH4 Methane CH4 Carbon Dioxide CO2 Carbon Dioxide CO2 Carbon...

Page 10: ...ection 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 eMo...

Page 11: ...51 01i 11 and TX9081 01i 11 5 WRT 6 1 WRT 2 or 3 14 4 V 40 mA 135 mW 4 292 mH TX6351 01i 12 and TX9081 01i 12 5 WRT 6 1 WRT 2 or 3 14 4 V 477 mA 1 72 W 4 2 1 mH TX6351 01i 15 and TX9081 01i 15 5 WRT 6...

Page 12: ...can be affected by other interfering gases which may displace the subject gas being monitored Steam laden atmospheres and condensation can also reduce the sensitivity Flammable Be aware that some toxi...

Page 13: ...anual to maintain safety reliability and to preserve safety integrity where applicable It is important that sensors are located in positions determined in consultation with those who have specialised...

Page 14: ...unacceptable voltage error onto the signal This effect can be reduced on long distance connections by increasing the size of the cable cores or even better by running a separate 0 V conductor to power...

Page 15: ...patible for use with other intrinsically safe circuits emanating from different IS power sources Section 4 4 3 3 4 5 RS485 Data Output Signal RS485 serial data output with analogue signal intelligence...

Page 16: ...d with approved monitoring apparatus Power for the sensor must be derived from an approved 12 V dc power supply e g TX6642 Intrinsically Safe Power Supply or approved apparatus The installation must b...

Page 17: ...rev B P5536 1600 rev B 33 4 2 Main Display Power On NEXT FUNCTION SELECT CHANGE Checkpoint Next Function is the Left hand key Left hand key Left L and Select Change is the Right hand key Right hand ke...

Page 18: ...nu Prompt Bar Calibrate Sentro 1 Setup Output Setup Modbus Setup Module Setup Checkpoint Sentro will automatically return to the Main Display if no commands are given within 1 minute The time limit is...

Page 19: ...alibrate Zero Follow the prompt bar and screen instructions Go to Span Follow the prompt bar Section 5 2 Calibrate Span using a Test Gas of EXPECTED value Follow the prompt bar and screen instructions...

Page 20: ...ntinue with the normal span calibration previous page Follow the prompt bar 4 4 2 Sentro 1 Setup The basic functional characteristics of the sensor can be setup or reviewed from a choice of parameters...

Page 21: ...tup to preferred values Output Information This is the factory setting of the output signal Confirm acceptance Trim Output Zero The level of the transmitted output signal when the sensor is measuring...

Page 22: ...elay can be independently setup Checkpoint The general relay function will be reversed when monitoring oxygen deficiency i e the relay will de energise when the measured gas concentration recedes from...

Page 23: ...Change Setpoint 2 The Sentro Module provides two adjustable setpoint output signals When setpoint 1 General is activated the LED alarm indicators in the display window flash simultaneously at a rate o...

Page 24: ...If the visual alarm has been enabled then this will also activate at level 1 when a STEL or TWA limit is exceeded For a contact output version the STEL and TWA alert will also initiate the Activate c...

Page 25: ...e by removing it for 2 seconds The gas sensing concentration Module Not Fitted The eModule has been removed and is out for more than 10 seconds Checkpoint Under range output signal will be transmitted...

Page 26: ...s 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 shoul...

Page 27: ...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...

Page 28: ...trademarks in this document is acknowledged Document History Revision Date ECN 08 20 11 2014 N A 09 20 01 2015 N A A 11 12 2015 4262 B 25 04 2016 4340 P5536 1600 rev A 25 04 2017 4483 P5536 1600 rev...

Page 29: ...www trolex com Trolex Ltd Newby Road Hazel Grove Stockport Cheshire SK7 5DY UK t 44 0 161 483 1435 e Sales trolex com www trolex com...