Bascom_turner GAS-ROVER VGA-411 Operation Manual Download

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TABLE OF CONTENTS

FEATURES

SPECIFICATIONS

PART 1. OPERATION

The Gas-Rover Detectors .......................................................................................

Essential Operating Practice ..................................................................................

Operational Description .........................................................................................

Instrument Checks..................................................................................................

Interference from Other Gases, Liquids, or RFI ....................................................

Change of Batteries ................................................................................................

Probes.....................................................................................................................

Routine Maintenance .............................................................................................

Appendix 1: Main Key Functions .......................................................................

Appendix 2: The Gas-Rover in Mobile Surveys.................................................

PART 2. SETUP AND CALIBRATION

Setup.......................................................................................................................

Further Setup Parameters .......................................................................................

Calibration..............................................................................................................

PART 3. THE USB INTERFACE

Downloads .............................................................................................................

Reports ...................................................................................................................

Maintenance ...........................................................................................................

PART 4. MAINTENANCE

Sensor and Pump Installation.................................................................................

ACCESSORIES AND SPARE PARTS

Summary of Contents for GAS-ROVER VGA-411

Page 1: ...BASCOM TURNER INSTRUMENTS GAS ROVER DETECTORS OPERATION MANUAL NATURAL GAS CARBON MONOXIDE AND OXYGEN DETECTORS Part Number OM 0717...

Page 2: ...s must be trained to recognize instrument malfunctions and to have such instruments repaired promptly Bascom Turner offers no warranty that failures will not occur only that when they occur they will...

Page 3: ...s Liquids or RFI 9 6 Change of Batteries 10 7 Probes 11 8 Routine Maintenance 12 Appendix 1 Main Key Functions 14 Appendix 2 The Gas Rover in Mobile Surveys 14 PART 2 SETUP AND CALIBRATION 1 Setup 15...

Page 4: ...after gas is pumped for a precise fixed time Automatic Data Storage Automatic storage of time and mode stamped data readings Automatic storage the last 24 calibrations Automatic generation of reports...

Page 5: ...Time 60 seconds Response Time CH4 0 6 seconds Survey 2 seconds Monitor CO 45 seconds O2 60 seconds Operating Temp 20o C to 40o C 0o F to 105o F Storage Temperature 40o C to 60o C 40o F to 140o F Data...

Page 6: ...pes and other conduits All models which detect carbon monoxide CO may be used to test for CO in ambient air flue gas and gases given off by appliances A detector alerts the user acoustically and visua...

Page 7: ...ion without this filter will eventually degrade the sensors and the pump It also voids the limited warranty It is essential that the filter be replaced monthly or sooner if it turns brown Operation wi...

Page 8: ...nt gas refer only to the calibration gas and can be relied upon only in this respect in assessing an atmosphere sampled by the detector Furthermore concentrations displayed by the detector refer to a...

Page 9: ...g off of power The next display suggests a Calibrate by a date thirty days from the date of the last calibration and an opportunity to calibrate see Part 2 Calibration If calibration is not chosen the...

Page 10: ...shows the concentration of gas in air in parts per million by volume ppm The beeper will sound if the ambient concentration of gas rises above a user selected value see Part 2 Section 1 The factory se...

Page 11: ...the front panel to Bar Hole BH The instrument automatically clears any residual gas and checks for clean air The pump is then turned off and the instrument is ready for bar holing After inserting the...

Page 12: ...ert the probe into the flue and read the concentration of CO in parts per million A flue gas check of CO should take one minute or less For every minute of flue gas sampling allow the detector a minut...

Page 13: ...tomatic Sensor Check If a gas sensor fails opens up the display shows Replace Methane Sensor Automatic Pump Check If the intake is blocked the display shows Flow Blocked and the detector beeps until t...

Page 14: ...on monoxide Models VGO 321 and VGO 322 methane and oxygen detectors use the methane sensors listed above and iv A two electrode electrochemical cell for oxygen Gases or liquids with appreciable vapor...

Page 15: ...rms and the display flashes Low Batteries between readings If battery life is over the unit displays Low Batteries and powers down the batteries must be changed to make the instrument operational agai...

Page 16: ...fitting Flue Gas Probe The flue gas probe Part No FP 110 is a telescoping metal probe screwed finger tight into the flue gas filter The other end of the filter attaches to the dust and water block fi...

Page 17: ...block filters as they will not block water or remove very fine dust and dirt If this filter gets blocked it should be replaced Water stopper The water stopper Figure 2 provides a quick way to continue...

Page 18: ...th fresh filter material up to the bottom of threads place the plastic retainer disk flat on top and screw the top finger tight Check the seal by carrying out a block test with the detector Heavy Hydr...

Page 19: ...urvey kit Part No MP 001 which can be installed in about 4 hours MODIFICATIONS OF EXISTING SAMPLING SYSTEMS The two chain and funnel assemblies that run from the front bumper should be about four feet...

Page 20: ...ted with the right Update button When a flashing parameter is OK press the left Next button to either advance to the next digit or to leave the Edit screen and display the edited parameter Alarm Limit...

Page 21: ...Typically the pump current rises by about 15 ma when a hose and probe are attached The Pump Noise test follows when the Exit key is pressed Pump Noise is meaningful only under load i e when hose probe...

Page 22: ...o choose A CAL connect pure methane or natural gas and press the left Yes button The screen displays Calibrating for about a minute and then changes to Calibration OK with a display of readings taken...

Page 23: ...ading setup parameters DATA LINK can be installed on PC s with Windows 2000 or XP Pro operating systems and equipped with a USB port Figure 3 Main Menu the initial DATA LINK screen 1 DOWNLOADS The mai...

Page 24: ...ble which helps to identify when the unit was powered on and the operational mode changed Using the data on alarm flags in the Readings Summary file a Sorted Alarm Events table can be displayed to ide...

Page 25: ...of the data is archived in the PC no matter how many times it is downloaded from the unit to the PC Downloading Readings Data It can take 5 minutes to download all the readings data from a unit to a P...

Page 26: ...story by Unit ID is a report of the date and time of each calibration with before and after calibration readings of each sensor Since the pump must work in order to calibrate a detector this is checke...

Page 27: ...y User is a list of each time when a user is assigned a new unit The Unit Assignment History by User report summarizes the assignment audit trail with a chronological list of units used by a user and...

Page 28: ...23 Readings and Exposure Report Selection Form Bar Holing reports showing peak and sustained readings...

Page 29: ...back of the case see Step 2 above removing the manifold from the bottom of the case and unscrewing the four screws which secure the pump gasket pump plate diaphragm and piston to the manifold Usually...

Page 30: ...ase and main circuit board removed CAUTION After replacing a methane or a CO sensor perform the New Filament procedure described under Part 2 Setup and Calibration and then completely calibrate the in...

Page 31: ...ter 5 pkg FF 105 Heavy Hydrocarbon Filter 5 pkg HF 005 Inlet Filter Quick Connect Air Intake 5 pkg IF 705 3 Sensors Methane Sensor for Rovers with S N less than 401000 MS 601 Methane Sensor for Rovers...

Page 32: ...27 Bascom Turner Instruments 111 Downey Street Norwood MA USA 02062 781 769 9660 800 225 3298 Fax 781 769 2099 bascomturner com...

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