MesaLabs Defender Series are the industry standard for accurate, reliable and portable Primary calibrators
3 models for 3 flow standards:
• 1% Accuracy Volumetric
• Low: 5-500ccm
• Medium: 50-5,000ccm
• High: 300-30,000ccm
Defender 510 and Defender 520
- Volumetric accuracy: ± 1% of reading
- Three flow ranges: Low: 5 – 500 ccm; Medium: 50 – 50,000 ccm; High: 300 – 30,000 ccm
- Defender 510 volumetric primary flow standard
- Defender 520 enhanced volumetric primary flow standard
- Documents temperature and pressure for enhanced audit trail.
Defender 530+
- Three flow ranges: Low: 5 – 500 ccm; Medium: 50 – 50,000 ccm; High: 300 – 30,000 ccm
- Volumetric accuracy: ± 0.75% of reading
- Primary flow standard
- Standardised accuracy: ± 1% of reading
- Swagelok fittings
Technical Specifications
- Approximate Time per Reading: 1-15 seconds
- Reading Styles (with averaging function userselectable from 1 to 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 backlight off
- Pressure and Suction Fittings: 1/4” ID Swagelok® compression fittings, 3/8” fittings on High Model
- Warranty: 1 year; battery 6 months
- 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 |
