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TVC GFM2, Instruction Manual, Page: 3 / 20

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TVC GFM2 Instruction Manual Download Page 3

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1.0

Description

1

GFM2

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Battery charger

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Thread adaptors (

male and female; 3/8” and 1/4”

)

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Quick-fit extensions with thread adaptors (

male and female; 3/8”

and 1/4”

)

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Nozzles (

16mm, 19mm and 22mm; only one pictured above

)

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Nozzle extension hose

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GFM2 to PC USB interface lead

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GFM2 to TVC Welding Data Logger interface lead (

optional

)

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1.1

Items Supplied

The GFM2 is supplied with the following:

Summary of Contents for GFM2

Page 1: ...ww tvcalx co uk The Validation Centre TVC Limited Unit 15 Brinell Way Harfreys Industrial Estate Great Yarmouth Norfolk NR31 0LU UK sales tvcalx co uk GFM2 Gas Flow Meter 2 including Analysis Model Instruction Manual V2 0 ...

Page 2: ...ts 9 2 3 3 ii Data Logging Inline 9 2 4 Data Viewing and Reporting 9 2 5 Viewing Logged Files 10 2 6 Transferring Logged Files into MS Excel Reports 11 2 6 1 Surge File Example 11 2 7 Removing Logged Files 12 2 8 Changing Measured Units or Date and Time 12 3 0 GFM2 Analysis Edition Optional 13 3 1 Field Calibration 15 4 0 Operational Flow Charts 16 4 1 Flow Chart 1 16 4 2 Flow Chart 2 17 4 3 Flow ...

Page 3: ... 4 4 Quick fit extensions with thread adaptors male and female 3 8 and 1 4 5 Nozzles 16mm 19mm and 22mm only one pictured above 6 Nozzle extension hose 7 GFM2 to PC USB interface lead 8 GFM2 to TVC Welding Data Logger interface lead optional 3 1 1 Items Supplied The GFM2 is supplied with the following ...

Page 4: ... Connectors and Controls 1 Quick fit flow inlet 2 Quick fit flow outlet 3 Display screen 4 Reset button reset peak gas flow value 5 Log button 6 Up button 7 Down button Close up view of quick fit flow inlet and outlet 1 2 ...

Page 5: ...ses ONLY The GFM2 is designed for use with Inert Welding gases NEVER attempt to monitor Fuel gases or Oxygen with the GFM2 2 When measuring welding nozzle flow always ensure that the wire feed drive wheels are slackened off so that welding wire cannot be fed through the GFM2 3 When using on equipment with High Frequency HF Arc Starting always ensuring that the HF is turned off 4 DO NOT EXCEED THE ...

Page 6: ...0 Ar He 10 Argon Helium Mixes 10 to 30 Ar He 30 Argon Helium Mixes 30 to 50 Ar He 50 Argon Helium Mixes 50 to 70 Ar He 70 Argon Helium Mixes 0 to 100 Ar He 100 Switch the On Off button to the On position The GFM2 LCD will illuminate and the software version number together with the model type will be displayed for a few seconds the screen will then revert to the standard display layout 2 3 1 Funct...

Page 7: ...n on the arc welding set once the flow has stabilised read the flow in litres per minute LPM on the GFM2 display Once the gas stops flowing the GFM2 display will turn red and display the total gas consumed Further gas flows will be added to the gas consumed total until the Reset button is pressed The total consumed can be read off the display during gas flow on the Cons area of the screen Peak gas...

Page 8: ... on screen results Log 2 Logs gas over a set period taking a gas reading every 20 milliseconds Log 3 Logs gas at regular intervals To select an alternative mode press and hold the Reset button for three seconds to enter the Setup screen Press the Up button to enter the logging options screen Press the Log button to scroll through the three logging options Use the Up and Down buttons to change the ...

Page 9: ...CTIONS Use PTFE tape to seal if required 2 3 3 ii Data Logging Inline NB DO NOT EXCEED THE RATED MAXIMUM PRESSURE OF 8 BAR For long periods of gas flow monitoring the mains power supply can be connected to the GFM2 Use either Log 2 or Log 3 depending on the type of logging required Log 2 The GFM2 will start logging as soon as it sees the gas flow and will stop logging once the pre set time has bee...

Page 10: ...n the drive and find the GFM2 files All logged gasses are stored under folders labelled by the date day month year i e 01042014 Open one of the folders to view the logged gases for that day LOG CSV contain all gas screen prints taken whilst in Log 1 mode TXT contain logged gasses whilst in Log 2 and Log 3 modes Each TXT file is labelled using the time the gas was logged hours minutes seconds 2 5 V...

Page 11: ...se The Log File Reporter template opens the LOG files gas screen captures whilst in Log 1 mode The Surge File Reporter template is used to open TXT files 2 6 1 Surge File Example 1 Open the Surge File Reporter template 2 Once opened click the load button to open a Windows file browser 3 Locate the GFM2 drive and select one of the TXT files logged Click the open button The template will now open th...

Page 12: ...either Metric or Imperial units however should this need to be adjusted this can be done via a computer When the GFM2 is connected to your computer it will appear as a removable drive in the Windows My Computer page Double click the drive icon to open the drive and find the GFM2 files Double click on the file TVC Handheld Date Setter exe The following software window will open on your PC Follow th...

Page 13: ... up screen will be displayed and a function selection screen will be displayed For normal GFM2 use press the Up button for gas test and analysis press the Down button 3 0 GFM2 Analysis Edition Optional The unit looks slightly different to the standard GFM2 The unit has a fixed hose 1 as well as a control valve on the back 2 1 ...

Page 14: ... the analysis pod The exhaust gas is vented to atmosphere so appropriate ventilation precautions with respect to prolonged use in confined spaces should be followed The analysis pod requires a set flow rate for accurate and repeatable operation The flow rate should be adjusted using the needle valve to achieve 10lpm 1LPM The flow rate is shown on the analysis screen and switches from red to green ...

Page 15: ...nds when using the set flow rate 3 1 Field Calibration The analysis pod is factory calibrated however additional field calibration is included to maintain optimum operation To perform the field calibration an O2 and CO2 free gas e g pure Argon or pure Nitrogen should be purged through the system The purge should be run for at least five minutes before the field calibration is performed Once the pu...

Page 16: ... before use particularly if the GFM2 has not been used for a while Field calibration can be run as often as desired 4 0 Operational Flow Charts 4 1 Flow Chart 1 Power On Ensure Log 1 operation mode is selected To reset the peak flow press the Reset button Insert the welding torch nozzle into the GFM2 nozzle and purge gas The gas flow will display in LPM whilst gas is flowing The GFM2 will display ...

Page 17: ... the Reset button The main screen will be displayed Select the gas mix required on the main screen by pressing the Up Down buttons Insert the welding torch nozzle into the GFM2 nozzle and purge gas The gas flow will display in LPM whilst gas is flowing The GFM2 will display the peak flow achieved when the gas flow stops and the gas consumed To save the displayed data press the Log button Reset the...

Page 18: ...ress the Log button A green bar will appear on the top of the screen The GFM2 is now ready to record the gas surge When the gas surge data has been recorded the bar will turn red and then disappear off the screen Reset the displayed data by pressing the Reset button Insert the welding torch nozzle into the GFM2 nozzle and purge gas The gas flow will display in LPM whilst gas is flowing The GFM2 wi...

Page 19: ...should be disconnected from the battery charger once fully charged The following details the charge cycle and LED indications for the GFM2 battery charger Yellow LED Green LED Mode Off Off Mains disconnected On On Battery charging Off On Mains connected battery charged or battery disconnected 6 0 Additional Information 6 1 Specification Range 5 to 100 LPM Argon Accuracy 5 reading 1 Digit Transduce...

Page 20: ...collection point for the recycling of this product once it has reached the end of its normal working life In these circumstances please contact us for further instructions For further information on equipment calibration or disposal please contact TVC 6 3 Disposal ...

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