The Defender™ Series
The occupational health and safety market has relied on Bios for dry, reliable true primary standards since 1991. We’re thankful for that, which is why we’ve taken everything we learned since our original DC-1 and DC-Lite and wrapped it up into one ultra-slick, durable package. The result is the most advanced gas flow measurement standard ever designed for industrial hygiene applications: The Defender™ Series.
Backed by Proven DryCal® Technology for fast, ±1% of reading calibrations of personal sampling pumps, this exciting line features the Defender 510 and the enhanced Defender 520, giving you the flexibility to do as much as you need while you work to defend lives. The Defender Series has it all:
- a broad dynamic flow range
- choice of single, hands-free continuous, or user-specified “Burst” measurements
- the temperature and pressure conditions of the calibration process (520 model)
- time intervals between measurements for checking personal sampling pump stability over a typical sampling period
- a field-friendly, rugged and lightweight design featuring a large, illuminated liquid crystal display and intuitive menu navigation
- RoHS- and CE-compliance
Click the below application note for more information
| Flow Ranges | Low (L) 5mL - 500mL/min Medium (M) 50 mL - 5,000 mL/min High (H) 300 mL - 30,000 mL/min |
| Accuracy | 1% Volumetric |
| Size | Small enough to fit easily in your hand; slim enough to slide into a briefcase or tote |
| Weight | 29 oz / 820 g |
| Dimensions (H x W x D) | 5.5 x 6 x 3 in / 140 x 75 mm |
| User-Selectable Measurement Units | |
|---|---|
| Volumetric Flow | mL/min L/min cc/min cf/min |
| Pressure (Defender 520 only) | mmHg PSI kPa |
| Temperature | ºC ºF |
| Defender 500 Series Specifications | |
|---|---|
| Approximate Time Per Reading: | 1-15 seconds |
| Gas Compatibility: | Use with non-corrosive, non-condensing, non-combustible gases, less than 70% humidity |
| Flow Modes: | Suction or Pressure |
| Measurement Cell Style: | Integrated |
| Temperature and Pressure Sensors: | In the flow stream Press.: 3.5 mmHg (typical), 7.0 mm (max); Temp.: 0.8° C (typical), 1.3° C (max) |
| Reading Styles: | Single (manual), Continuous or Burst, with averaging function user-selectable from 1 to 100 measurements |
| 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: | ¼" ID Hose Barb |
| Warranty: | 1 year; battery 6 months |
| Storage Temperature: | 0–70° C |
| Ambient Humidity: | 0–70%, non-condensing |
| Operating Pressure (Absolute): | 15 PSI |
| Display: | Backlit graphical LCD |
| Data Port (for use with Optimizer software): | Serial (RS-232) |
| Data Cable (for use with Optimizer software): | 1 meter (Defender Data Port to PC serial port) |
| Protective Case: | Soft side or Pelican case available | RoHS- and CE-compliant |