A Step-By-Step Guide to Field Calibration

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A Step-By-Step Guide to Field Calibration

• for Gilian Air Sampling Pump

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Items required

• Sampling Pump
• Collection Media
• Gilibrator Calibrator

3
Field Calibration

• A Field Calibration Consists of Two Parts
• The Pre-Calibration (Pre-Cal) is done before the
  sample is taken
• The Post-Calibration (Post Cal) is done after the
  sample is taken

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The Pre-Cal

• The Pre-Cal is used to set the desired sample
  flow rate, and to verify it on an air flow
  calibrator.

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Conducting the Pre-Calibration
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The Pre-Cal

• Set the Flow Rate
• Observe the Flow Rate
• Record the Flow Rate
• An average of 6 to 10 Gilibrator readings is
  recommended

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Run The Sample

• Pump is placed on the belt
• Sample media is placed on the lapel (Breathing
  Zone) and pointed downward
• Record the Start Time
• Record the End Time

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The Post-Cal

• The Post-Cal is used to obtain the final flow
  rate and to verify that the flow rate stayed
  within /- 5 of the set flow.

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The Post-Cal

• Observe the Final Flow Rate
• Record the Final Flow Rate
• An average of 6 to 10 Gilibrator readings is
  recommended

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Average Flow Rate

• The Pre-Cal flow rate and the Post-Cal flow rate
  may be averaged to obtain an average flow rate
  for the sample.

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Determining the Average Flow Rate

• Pre-Cal Flow Rate Post Cal Flow Rate Avg Flow
  Rate 2

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Cyclone Calibration

• The Gilian 10mm nylon cyclone has only an exit
  fitting and must be placed inside a calibration
  jar to accept the Gilibrator.

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Low Flow Modules

• Calibrating with low flow modules

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Constant Flow Modules

• Set pump flow to 1500cc/min
• Turn module switch on
• Connect sample tubing to pump
• Adjust desired flow rate at module
• Read flow rate at Gilibrator

15
Multi-Flow Modules

• Set pump to 1500 cc/min
• Turn module switch on
• Connect sample tubing to pump
• Adjust flow rate at holder
• Adjust each tube twice
• Read the flow rates

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Further Information

• For detailed information on any of the Gilian
  products, please consult the product operation
  manuals.
• Manuals may be accessed through our web site at
  www.Sensidyne.com

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Thank You

• Sensidyne, LP.
• Clearwater, FL, USA
• www.Sensidyne.com
• Fax [phone]
• Phone [phone]