A StepByStep Guide to Field Calibration for Gilian

A Step-By-Step Guide to Field Calibration for Gilian Air Sampling Pump

Items required • Sampling Pump • Collection Media • Gilibrator Calibrator

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

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

Conducting the Pre-Calibration

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

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

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.

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

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.

Determining the Average Flow Rate • Pre-Cal Flow Rate + Post Cal Flow Rate = Avg Flow Rate 2

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

Low Flow Modules • Calibrating with low flow modules

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

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

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

Thank You Sensidyne, LP. Clearwater, FL, USA www. sensidyne. com Fax 727 -539 -0550 Phone +1 727 -530 -3602 / 800 -451 -9444