This product appears in the ERE Air Catalogue 2025
Rolls-Royce
Bureau Veritas
Renouveau La Fontaine
Englobe
National Defence
Government of QuébecOverview
Defender 510
Volumetric Primary Flow Standard
Defender 520
Enhanced Volumetric Primary Flow Standard
Defender 530+
Standardized & Volumetric Primary Flow Standard
Instantly calibrate your air samplers using Quick Start - there is no preparation involved, no messy soap bubble solutions. Alternatively, set your Defender to take hands-free, continuous measurements while you quickly set the flow rate on your pumps. Defender’s many user-selectable options makes customizing your calibrations easy, giving you exactly what you need in the format you prefer. All you have to do is choose between the 510, the 520 or the 530.
Compare models
Your selection is highlighted. Select a row to switch.| Defender 510 | Defender 520 | Defender 530+ | ||
| Model and Flow Ranges | BIO-200-510L: 5 - 500 cc/min BIO-200-510M: 50 - 5,000 cc/min BIO-200-510H: 300 - 30,000 cc/min | BIO-200-520L: 5 - 500 cc/min BIO-200-520M: 50 - 5,000 cc/min BIO-200-520H: 300 - 30,000 cc/min | BIO-200-530L: 5 - 500 cc/min BIO-200-530M: 50 - 5,000 cc/min BIO-200-530H: 300 - 30,000 cc/min | |
| Volumetric Accuracy | 1% | 1% | 1% | |
| Standardized Accuracy | N/A | N/A | 1.2% | |
| User Selectable Measurement Units | Volumetric Standardized Temperature Pressure | ml/min, L/min, cc/min, cf/min N/A N/A N/A | ml/min, L/min, cc/min, cf/min N/A °C °F mmHg, PSI, kPa | ml/min, L/min, cc/min, cf/min smL/min, sL/min, scc/min,scf/min C °F mmHg, PSI, kPa |
| Temperature and Pressure Sensor | No | Yes, in flow steam | Yes, in flow steam | |
| Pressure Accuracy | N/A | 3.5 mmHg (typical) 7.0 mm (max) | 3.5 mmHg (typical) 7.0 mm (max) | |
| Temperature Accuracy | N/A | 0.8°C (typical) 1.3°C (max) | 0.8°C (typical) 1.3°C (max) | |
Calibration and repair
Send it to our Montreal service team. We evaluate the instrument and send a detailed quote before any work starts.
Questions, answered
How fast will I get a price?
Send the quote request and a specialist replies within 4 business hours, Monday to Friday, 8:00 to 4:30 ET.
Can we pay on account or by purchase order?
Yes. With established credit, terms are Net 30 days, and you can send your purchase order with the quote request. We also accept Visa, Mastercard and American Express.
How is shipping charged?
On quotes and account orders, freight is F.O.B. Montréal: the carrier charge is worked out at shipment from the packed weight and dimensions, and added to your invoice. In-stock items can also be picked up the same day in Montréal (8605 rue du Champ-d'Eau).
Can I return it?
Yes, within 30 days of purchase, with a return authorization number from customer service first. A 25% restocking fee applies, unless it is a defect covered by the warranty. Special orders, hazardous materials, flammable liquids and gases can't be returned. Return policy
Can ERE calibrate or repair it?
Yes. Our Montréal service shop calibrates and repairs it in-house. Request service
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