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Defender 530+ M – Medium Flow
Flow range: 50-5,000 sccm
Volumetric accuracy: 0.75%
Standardized accuracy: 1%
User-selectable measurement units
Volumetric flow: mL/min, L/min, cc/min, L/d, cfm
Standardized flow: smL/min, sL/min, scc/min, scf/min
Temperature: °C, °F
Pressure: mmHg, PSI, kPa
Measurement accuracy
Pressure: ± 3.5 mmHg (typical), ± 7.0 mm (max)
Temperature: ± 0.8 °C (typical), ± 1.3 °C (max)
Approximate time per reading: 1 – 15 seconds
Reading modes (with averaging function, user-selectable from 1–100 measurements): Single (manual), continuous or burst
Gas compatibility: Non-corrosive, non-condensing, humidity < 70%
Flow modes: Pressure or suction
Measurement cell style: Integrated
Power supply / charger: 12 VDC, >250 mA, 2.5 mm center positive
Battery: 6V rechargeable sealed lead-acid, typical operation time 6–8 hours
Battery operational time (5 cycles/min): 3 hours (backlight on), 8 hours (backlight off)
Pressure and suction fittings: 1/4” ID Swagelok® compression fittings; 3/8” fittings for High version
Storage temperature: 0 – 70°C
Ambient humidity: 0 – 70% RH, non-condensing
Operating pressure (absolute): Atmospheric, 15 PSI max
Display: Backlit graphical LCD
Data port (PC interface): Serial (RS-232)
Data cable: 1 meter (included)
Protective case: Pelican case available
Dimensions (H × W × D): 140 × 150 × 75 mm
Weight: 820 g
