The Defender Series

510, 520, 530+

High accuracy. Calibrators in Mesa’s Defender^TM 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″

Features

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
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

Defender Series

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

Product Options

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: