HOW TO BUMP TEST A GMI LEAKSURVEYOR (BUMP TESTING)

BUMP TESTING YOUR GMI LEAKSURVEYOR

IMPORTANT NOTE: Your Leaksurveyor is a “PUMPED” gas detector and so you should be using a DEMAND FLOW REGULATOR.

The objective of a Bump Test is to challenge the gas detector on a regular basis so you can see that it reads a gas presence and it alarms appropriately (either an audible alarm or a flashing light or both) when gas is present. Bump testing also confirms that after gas is removed the machine returns to 0.0% LEL.

Preparing your gas detector for bump testing …

Turn your gas detector ON
Check that your battery is full. This information is displayed in start-up
Check the calibration due date has not passed
Wait until your GMI unit settles on 0.0% LEL

Preparing your gas for bump testing …

Check the gas bottle contents are the correct mixture. DO NOT USE the wrong gas mix. Contact us if you are not sure – we are happy to help
Check the gas bottle contents are in date (there will be an expiry date on the bottle)
Check the bottle has gas in it
Attach the regulator and hose to the gas bottle and turn on

You are now ready to start the bump test …

Attach the hose from your gas bottle to your GMI Leaksurveyor
Wait for your GMI to settle
Take the reading
Turn the gas bottle off and remove the hose from the GMI
Wait for the GMI to settle
Check that the GMI returns to 0.0%

BUMP TEST RESULTS – WHAT DO THEY MEAN???

If your GMI Leaksurveyor bump test result reads below 45% LEL or above 55% LEL when using the correct gas mixture of 2.5% CH4 (50% LEL), then your GMI is out of calibration and must be calibrated. You can book your GMI Leaksurveyor in for calibration on our website (click here). If you need to rent a GMI Leaksurveyor whilst you send yours for calibration click here to contact us, we can help.

If your GMI Leaksurveyor bump test result reads above 45% LEL and below 55% LEL when using the correct gas mixture of 2.5% CH4 (50% LEL), then your GMI has responded appropriately to the bump test.

GET A FREE HEALTH CHECK

If you don’t have the facilities to complete your own bump testing or perhaps you would like a more complete examination of the health of your unit you can access that service at anytime for ZERO$ through Heath Pipeline Services (www.gasandoil.com.au). Click here to book your GMI in for a free health check.