The Defender Series flow calibrators are made to calibrate primary flows in industrial settings with great accuracy.
510, 520, 530+
- Highly accurate: Mesa's Defender™ Series calibrators feature a reading uncertainty of less than 1% and are supported by proven DryCal® technology.
- Durable: For many years, IH professionals have relied on DryCal calibrators for dependable performance since they are all field-proven.
- Flow data in real time: The DryCal Pro software records calibrator flow data in real time, uploads it to a PC, and exports it to a Microsoft environment.
- Easy factory calibration via mail: A defensible audit record and complete refurbishment are provided by Mesa's ISO-accredited facility's yearly NIST-traceable calibration.
- Trusted accreditation: Mesa Labs has a 0.08% scope of accreditation for gas flow from NIST's NVLAP, making it a fully accredited ISO 17025 facility: "NVLAP Lab Code 200661-0"
Technical Specifications
Defender Series
- Approximate time per reading: 1–15 seconds
- Flow modes: Pressure or suction
- Gas compatibility: Non-corrosive, non-condensing, less than 70% humidity
- Reading styles (with averaging function user selectable from 1 to 100 measurements): single (manual), continuous, or burst
- Measurement cell style: Integrated
- Pressure and suction fittings: 1/4” ID Swagelok® compression fittings, 3/8” fittings on high model
- AC adapter/charger: 12 V DC, >250 ma, 2.5 mm center positive
- Battery system: 6 V rechargeable, sealed lead-acid, 6–8 hours typical operation
- Battery operational time (five cycles/minute): three hours with backlight on, eight hours with backlight off
- Warranty: one year; battery: sx months
- Display: Backlit graphical LCD
- Storage temperature: 0–70 °C
- Ambient humidity: 0–70%, non-condensing
- Operating pressure (absolute): Atmospheric, 15 PSI maximum
- Protective case: Pelican case available
- Data cable (for PC interface): 1 meter (Defender data port to PC included)
- Data port (for PC interface): Serial (RS-232)
- Weight: 29 oz/820 g
- Dimensions (H x W x D): 5.5” x 6” x 3”/140 x 150 x 75 mm
Source: Mesa Labs, Inc.
| Model |
Defender 510 |
Defender 520 |
Defender 530+ |
| Flow Ranges |
Low: 5–500 ccm
Medium: 50–5000 ccm
High: 300–30,000 ccm
|
Low: 5–500 ccm
Medium: 50–5000 ccm
High: 300–30,000 ccm |
Low: 5–500 ccm
Medium: 50–5000 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 (maximum) |
± 3.5 mmHg (typical)
±7.0 mm (maximum) |
| Temperature Accuracy |
N/A |
± 0.8 °C (typical)
± 1.3 °C (maximum) |
± 0.8 °C (typical)
± 1.3 °C (maximum) |
| 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 devices provide single, continuous, and burst reading modes. The OSHA Technical Manual highlights the series as a calibrating technique.
Users can use DryCal Pro Software to obtain real-time flow and data recording by linking their computer to the Defender's RS-232 connection. The product line includes:
Defender 510: Volumetric Primary Flow Standard
The Defender 510 serves as the series' base model. The main purposes of this model are:
- Calibration of personal sampling pump
- Calibration of volumetric flow
Defender 520: Enhanced Volumetric Primary Flow Standard
The Defender 520 is the Defender Series' intermediate model. This model offers:
- Flow calibration to determine pressure and temperature
- A less expensive choice
Defender 530+: Standardized Primary Flow Standard
The Defender 530+ is the Defender Series' most advanced model. This model delivers:
- Standardized readings (mass flow)
- Standard applications for industrial flow and ambient air
- Choices for volumetric or standardized flow applications