Crowcon Tetra MO7237 User Manual Download | Manualshive

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Tetra

Personal Multigas

Monitor

User Manual

M07237

May 2010
Issue 10

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Summary of Contents for Tetra MO7237

Page 1: ...Tetra Personal Multigas Monitor User Manual M07237 May 2010 Issue 10...

Page 2: ...on performance standards EN50054 EN50057 EN61779 1 EN61779 4 EN50104 and EN50270 has been certified by Lloyd s Register 5 Repair of this equipment and gas sensor replace ment shall be carried out by t...

Page 3: ...8 III Batteries 12 IV Alarm indications 14 V Fixing accessories 15 VI Flow sampling 16 VII Maintenance and calibration 21 VIII PC interface and software 23 IX i module replacement 24 X Specification...

Page 4: ......

Page 5: ...and aspirator bulb Optional spare battery pack for non rechargeable units Battery check The Tetra Personal Multigas Monitor has two battery options Li ion recharge able or alkaline non rechargeable b...

Page 6: ...le steps to get your unit ready for use 1 Ensure the unit is in clean air 2 Switch on Press and hold the operator button until the red LED flashes The operator display screen will light up and the uni...

Page 7: ...single click to confirm auto zero If the operator button is not pressed within the 10 second time out Tetra will proceed directly to Run mode without performing zero Tetra Quickstart guide LEDs Alarm...

Page 8: ...any gas being monitored Tetra will activate the alarm signals Alarm signals The red and blue alarm LEDs will flash the sounder will emit a loud fast series of beeps the internal vibrator alarm will a...

Page 9: ...tored in a safe non hazardous area 0 30 C 10 90 RH 4 Additional information For battery recharging information go to section III For fixing accessories go to section V For sampling section go to secti...

Page 10: ...a single operator button and an intelligent user friendly display with automatic backlight Gas levels are continuously monitored provid ing normal gas readings peak readings and time weighted average...

Page 11: ...ust tight to IP65 and with a non slip grip The internal structure has been carefully designed to make servicing easy and at the same time very rugged If the unit is dropped there will be no disruption...

Page 12: ...B If auto zero fails a warning message will be displayed and an X will appear against the sensor that has failed Switch off To switch off the unit press and hold the operator button for 5 seconds A sh...

Page 13: ...the icon is revolving 2 3 Display symbol guide Battery A full battery is represented by a battery icon showing a full six bars A low battery charge will show 1 to 2 bars When zero bars are shown the...

Page 14: ...n the shaft rather than just a sampling tube Deselecting Peak mode clears stored peak information TWA display Shows the 15 minute or 8 hour time weighted average TWA for toxic gases monitored since la...

Page 15: ...cessed using the IR communications link with Portables PC software See section VIII It can record data each minute for 50 hours up to a limit of 1500 events Tetra records the time and date for a numbe...

Page 16: ...nsert the lead into the socket Switch on the power The unit would normally be left switched off for charging and will display a battery icon on the display sweeping from empty to full When charging is...

Page 17: ...itable for the non rechargeable ver sion Energizer type LR6 MN1500 Gold Peak type 15A LR6 Duracell type MN1500 LR6 Varta type 4006 Alkaline batteries will typically last 11 hours To replace the batter...

Page 18: ...rs are set to falling for deficiency monitoring Alarm latching Alarms can be set to be latched or unlatched Latched alarms will require the operator button to be pushed in order to clear the alarm Thi...

Page 19: ...belt clip at the back of your Tetra unit The plate will lock automatically into place Create a chest harness by attaching one strap to the top connectors to go around the neck and the other to link ar...

Page 20: ...onto the gas outlet nozzle 4 To remove the flow adaptor plate unscrew the thumbscrew and lift the plate away from the instrument 16 Gas in Gas out Flow adaptor The sampling tube supplied is normally...

Page 21: ...ly stop Tetra will emit a rapid series of beeps and display a warning message To restart the pump clear the blockage and press the operator button Diffusion instruments When using the manual aspirator...

Page 22: ...in any way nor additional tubing length used The Gas Test Accessory Kit is supplied in a convenient carry case and comprises a gas cylinder containing the quad gas mix a Trigger regulator with interc...

Page 23: ...to confirm Calibration If the button confirmation for calibration is not made within 10 seconds then the process will revert to gas test as in 6 2 3 Apply calibration gas following step 4 in 6 2 Tetr...

Page 24: ...se blocked or kinked Ensure no restriction to flow Tetra fails gas test Gas cylinder empty Check gauge replace cylinder as needed Gas cylinder out of date Check date and replace as needed Hose blocked...

Page 25: ...ds as a minimum a monthly gas test to confirm sensor operation A test gas of known composition needs to be applied to verify sen sor response and alarm function Instrument calibration of all sensors s...

Page 26: ...flow rate It is important that the flow rate is set correctly as otherwise pressure effects may distort calibration values and prevent the gas detector from working cor rectly To calibrate Crowcon po...

Page 27: ...with access to reconfigure alarm levels opera tion run calibrations print reports and to access the event log Set up 1 Install Portables PC software on PC and install infrared adaptor Warning The infr...

Page 28: ...screws as shown by point 6 Ease the top away from the body point 7 Press down lightly on the rubber seal protecting the sensor housing and slide forward to clear the internal chassis from the sensor...

Page 29: ...mly and the sensor is still tightly located on the module board Replace the retaining ring on the clips 3 Attach the ribbon connector by squeezing the two retaining lugs on the module board toward eac...

Page 30: ...r oxygen Repeatability 2 FSD 6 months Explosion protection Intrinsically Safe ATEX Essential Health and Safety Requirement clause 15 9 Safety certificate no BASEEFA03ATEX0193 Approval codes Europe ATE...

Page 31: ...ure for Gas Test Accessory Kit 34 litre bottle 50 LEL methane 100ppm carbon monoxide 15ppm hydrogen sulphide 18 oxygen balance nitrogen Calibration gas contact Crowcon required gases depend on sensor...

Page 32: ...irator hose please specify length in feet C03141 6 m Drop line C01245 Water trap Carrying and wearing C01842 Universal harness plate C01843 Shoulder strap C01844 Chest harness strap kit C01845 Carry c...

Page 33: ...ea immediately Return instrument for recalibration or sensor replacement Autozero failed Zeroing in Switch off and restart in contaminated clean air atmosphere Cannot autozero due to Zeroing in Switch...

Page 34: ...ted when the unit is exposed to an over range gas concentration there is a risk of damage to the pellistor sensor Restart should be carried out in a known fresh air environment Depleted oxygen levels...

Page 35: ......

Page 36: ...l 31 10 421 1232 Fax 31 10 421 0542 Email eu crowcon com Web site www crowcon com USA Office Crowcon Detection Instruments Ltd 21 Kenton Lands Road Erlanger Kentucky 41018 1845 USA Tel 1 859 957 1039...

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