- Home
- Companies
- Mesa Laboratories, Inc.
- Products
- Defender - Portable Primary Calibrators
Defender - Portable Primary Calibrators
High accuracy. Calibrators in Mesa’s DefenderTM Series are backed by Proven DryCal® technology and have a reading uncertainty of less than 1%. Durability. All DryCal calibrators are field-proven and have provided IH professionals with reliable performance for decades. Real-time flow data. Calibrator flow data is captured in real-time with our DryCal Pro software, directly uploaded to a PC, and exported to a Microsoft environment. Convenient mail-in factory calibration. An annual NIST-traceable calibration by Mesa’s ISO-accredited facility provides a defensible audit trail and full refurbishment. Trusted accreditation. Mesa Labs is a fully accredited ISO-17025 facility with a 0.08% Scope of Accreditation for gas flow by NVLAP of NIST. "NVLAP Lab Code 200661-0"
- 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
All Defender series products offer single, continuous, and burst reading options. The series is highlighted as a calibration method in the OSHA Technical Manual.
By connecting your computer to the Defenders RS-232 port, you’ll get real-time flow and data capture using DryCal Pro Software. Check out our product line:
Defender 510 • Volumetric Primary Flow Standard
The Defender 510 is the base model of the Defender series. This model is primarily used for
- Personal Sampling Pump Calibration
- Volumetric Flow Calibration
Defender 520 • Enhanced Volumetric Primary Flow Standard
The Defender 520 is the intermediate model of the Defender Series. This model provides:
- Flow Calibration where you want to know Temperature/Pressure
- A more affordable option
Defender 530+ • Standardized Primary Flow Standard
The Defender 530+ is the most enhanced model of the Defender Series. This model provides:
- Standardized (Mass Flow) Readings
- Ambient Air and Industrial Flow Standard Applications
- Options to use Standardized or Volumetric Flow Applications