Data Sheet:
Defender 500 Series

The Mesa Laboratory Defender 500 series are dry portable gas flow calibrators ideal for industrial hygiene applications to verify sampling pumps or other gas flow instruments.  The Defender 500 is offered in three models Defender 510 (volumetric flow only) and Defender 520 (volumetric flow with temperature and pressure readings).  Each model is then available in three flow ranges:  300 – 30 000 ccm, 50 – 5 000 ccm and 5 – 500 ccm.  The calibrators can be used in pressure or suction mode and can interface with a PC using the free downloadable software.  Standard process connections are hose barb.