Mesa Labs Defender 510

The Mesa Labs Defender 510 Volumetric Primary Flow Standard Calibrator, base model of the Defender Series, featuring DryCal technology. Ideal for: personal sampling pump calibration and volumetric flow calibration. Available from CleanAir in Low flow range configuration (5-500 ccm). Each factory-calibrated instrument includes ISO-17025 NIST-traceable certifications.

All Defender Series products offer single, continuous, and burst reading options. Connect your computer to the Defender’s RS-232 port for real-time flow and data capture using DryCal Pro Software.

Also available in a Low flow configuration: Mesa Labs Definer 220.

Specifications

Approximate Time per Reading: 1-15 seconds
Reading Styles (with averaging function user-selectable from 1-100 measurement): Single (manual), Continuous or Burst
Gas Compatibility: Non-corrosive, non-condensing, less than 70% humidity
Flow Modes: Pressure or Suction
Measurement Cell Style: Integrated
AC Adapter/Charger: 12V DC, >250ma, 2.5 mm center positive
Battery System: 6V rechargeable, sealed lead-acid, 6-8 hrs typical operation
Battery Operational Time (5 cycles/min): 3 hrs backlight on, 8 hrs off
Pressure and Suction Fittings: 1/4” ID Swagelok® compression fittings, 3/8” fittings on High Model
Storage Temperature: 0-70°C
Ambient Humidity: 0-70%, non-condensing
Operating Pressure (Absolute): Atmospheric, 15 PSI Max
Display: Backlit graphical LCD
Data Port (for PC interface): Serial (RS-232)
Data Cable (for PC interface): 1 meter (Defender Data Port to PC included)
Protective Case: Pelican case available
Dimensions (H x W x D): 5.5” x 6” x 3” / 140 x 150 x 75 mm
Weight: 29 oz / 820 g

Model	Defender 510	Defender 520	Defender 530+
Flow Ranges	Low: 5-500 ccm Medium: 50-5,000 ccm High: 300-30,000 ccm	Low: 5-500 ccm Medium: 50-5,000 ccm High: 300-30,000 ccm	Low: 5-500 ccm Medium: 50-5,000 ccm High: 300-30,000 ccm
Volumetric Accuracy	1%	1%	0.75%
Standardized Accuracy	N/A	N/A	1%
User-Selectable Volumetric Units	mL/min, L/min, cc/min, cf/min	mL/min, L/min, cc/min, cf/min	mL/min, L/min, cc/min, cf/min
User-Selectable Standardized Units	N/A	N/A	smL/min, sL/min, scc/min, scf/ min
User-Selectable Temperature Units	N/A	°C, °F	°C, °F
User-Selectable Pressure Units	N/A	mmHg, PSI, kPa	mmHg, PSI, kPa
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)
Industry Applications	Industrial Hygiene, Air Quality	Industrial Hygiene, Air Quality	Manufacturing, Air Quality, Personal Gas Sampling
Pressure and Suction Fittings	1/4″ ID Hose Barb	1/4″ ID Hose Barb	1/4″ ID Swagelok® compression fittings, 3/8″ fittings on High Model


	Manufacturer Product Series Brochure	PDF
	Manufacturer User Manual	PDF