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Primary Gas Flow Calibration
Primary Gas Flow Calibration
PTC works with Mesa Laboratories on different primary gas flows calibrators with NIST traceable standard for industry, lab & environmental applications.
Mesalabs offer
- Primary Calibration Standards
- Accurate and reliable gas flow readings independent of gas species
- Fully accredited ISO-17025 calibration & manufacturing facility
- ±0.08% Scope of Accreditation for gas flow by NVLAP of NIST
Applications
- Manufacturing & Quality Control
- Occupational Health & Safety
- Environmental & Ambient Air Monitoring
- Metrology, Calibration & R&D Laboratories
- MFC/MFM Calibration
- Semiconductor Processing
Series
Defender Series | FlexCal Series | Metrology Series |
---|---|---|
![]() | ![]() | ![]() |
Laboratory & Field Ready Primary Calibrators | High Accuracy Portable Gas Flow Calibrators | Primary Flow Standards for Metrology, Calibration & R&D Laboratories |
Flow Range Up to 30 LPM | High Accuracy Portable Gas Flow Calibrators | Primary Flow Standards for Metrology, Calibration & R&D Laboratories |
0.75 – 1.0% Volumetric Accuracy | 0.5% Accuracy of Reading | 0.15% Measurement Uncertainty |
Key product lines
Defender Series
Defender 500 Series
Particulate Sampling – Urban or remote sampling using a network of samplers in a project area will determine where the worst air quality problems exist. In addition to providing data for environmental impact studies, saturation sampling is frequently used to determine the location for permanent monitoring sites, to define boundaries of air quality concerns, and to determine the extent of point source impacts.
Defender 510 • Volumetric Primary Flow Standard
Defender 520 • Enhanced Volumetric Primary Flow Standard
Defender 530+ • Standardized and Volumetrics Primary Flow Standard
Defender 510
Features
- Low: 5-500ccm
- Medium: 50-5,000ccm
- High: 300-30,000ccm
- Single, Continuous and Burst reading options
- Accuracy Volumetric (% of reading) 1%
- Volumetric Flow Readings – mL/min, L/min, cc/min, cf/min
- Data Port: Serial (RS-232)
- 1/4” Barbed Plastic Compression Fittings

Defender 520
Features
- Low: 5-500ccm
- Medium: 50-5,000ccm
- High: 300-30,000ccm
- Single, Continuous and Burst reading options
- Accuracy Volumetric (% of reading) 1%
- Temperature & Pressure Sensors in flow stream
- Temperature Readings: C°, F°
- Pressure Readings: mmHg, PSI, kPa
- Volumetric Flow Readings – mL/min, L/min, cc/min, cf/min
- Data Port: Serial (RS-232)
- 1/4” Barbed Plastic Compression Fittings

Defender 530
Features
- Includes barbed fitting adapters
- Single, Continuous and Burst reading options
- Accuracy Volumetric (% of reading) 0.75%
- Accuracy Standardized (% of Reading) 1%
- Temperature & Pressure Sensors in flow stream
- Temperature Readings: C°, F°
- Pressure Readings: mmHg, PSI, kPa
- MFC Gas Sensor Factor for Calibration of Alternate Gases other than Clean Air and N2.
- Volumetric Flow Readings – mL/min, L/min, cc/min, cf/min
- Standard Flow Readings – smL/min, sL/min, sccm, scf/min
- 1/4″ ID Swagelok® Compression Fittings, 3/8” fittings on High Model
- Data Port: Serial (RS-232)

FlexCal Series
Mesa Labs’ newest standardized and volumetric primary flow standard offers easy-to-navigate calibrations with unparalleled flow ranges, accuracy and portability.
- USB connectivity
- Flow ranges from 5 ccm to 50 LPM
- Quick start operation
- Graphical LCD display
- User-selectable flow units and time intervals
- Low: 5-500ccm
- Medium: 50– 5 LPM
- High: 0.5 – 50 LPM
- Accuracy 0.5% of reading
- User selectable measurement units Volumetric mL/min, L/min, cc/min, cf/min
- Standardized smL/min, sL/min, scc/min, scf/min
- Temperature °C °F
- Pressure mmHg, PSI, kPa
- Temperature and Pressure Sensor Yes, in flow stream

Metrology Series
DryCal 800
High-Precision Primary Flow Standards for Laboratory and Industrial Process Control Applications
The DryCal 800 positive displacement primary standards provides a cost-effective, entirely dry means of precisely measuring gas flow while maintaining defensible, direct traceability to NIST. +0.15% Accuracy Primary Flow Standard 0.5 sccm to 100 slm Primary Flow Standard The DryCal 800 enables you to perform fast, incredibly accurate flow measurements, with the confidence of Proven DryCal® technology. DryCal 800’s simple touch screen operation and instant gas flow measurements require little user training and minimize user-interpretation – which means that multiple staff members can step in and perform precise calibrations at any time.
DryCal 800
Features
- 0.5 sccm – 100 slpm Flow Range
- 0.25% Measurement Uncertainty (0.5 – 50 sccm)
- 0.15% Measurement Uncertainty (5 – 100,000 sccm)
- 5 Interchangeable Flow Cells
- 1/4″ ID Swagelok® tube compression fitting (1/8″ fittings Model 800-3) (1/2″ outlet fitting Model 800-44)
- Proven DryCal Technology – Accurate and reliable gas flow readings independent of gas species measured
- Innovative – 100:1 turndown ratio; accurately measuring flow rates as low as 0.5 sccm
- Simple touch screen operation
- Quality and Expertise — 0.08% Scope of Accreditation for gas flow by NVLAP of NIST; Over 20 years experience providing training, installations, system consulting and custom solutions
- Serial (RS-232) and USB

Primary Gas Flow Calibration
PTC works with Mesa Laboratories on different primary gas flows calibrators with NIST traceable standard for industry, lab & environmental applications.
Mesalabs offer
- Primary Calibration Standards
- Accurate and reliable gas flow readings independent of gas species
- Fully accredited ISO-17025 calibration & manufacturing facility
- ±0.08% Scope of Accreditation for gas flow by NVLAP of NIST
Applications
- Manufacturing & Quality Control
- Occupational Health & Safety
- Environmental & Ambient Air Monitoring
- Metrology, Calibration & R&D Laboratories
- MFC/MFM Calibration
- Semiconductor Processing
Series
Defender Series | FlexCal Series | Metrology Series |
---|---|---|
![]() | ![]() | ![]() |
Laboratory & Field Ready Primary Calibrators | High Accuracy Portable Gas Flow Calibrators | Primary Flow Standards for Metrology, Calibration & R&D Laboratories |
Flow Range Up to 30 LPM | High Accuracy Portable Gas Flow Calibrators | Primary Flow Standards for Metrology, Calibration & R&D Laboratories |
0.75 – 1.0% Volumetric Accuracy | 0.5% Accuracy of Reading | 0.15% Measurement Uncertainty |
Key product lines
Defender Series
Defender 500 Series
Particulate Sampling – Urban or remote sampling using a network of samplers in a project area will determine where the worst air quality problems exist. In addition to providing data for environmental impact studies, saturation sampling is frequently used to determine the location for permanent monitoring sites, to define boundaries of air quality concerns, and to determine the extent of point source impacts.
Defender 510 • Volumetric Primary Flow Standard
Defender 520 • Enhanced Volumetric Primary Flow Standard
Defender 530+ • Standardized and Volumetrics Primary Flow Standard
Defender 510
Features
- Low: 5-500ccm
- Medium: 50-5,000ccm
- High: 300-30,000ccm
- Single, Continuous and Burst reading options
- Accuracy Volumetric (% of reading) 1%
- Volumetric Flow Readings – mL/min, L/min, cc/min, cf/min
- Data Port: Serial (RS-232)
- 1/4” Barbed Plastic Compression Fittings

Defender 520
Features
- Low: 5-500ccm
- Medium: 50-5,000ccm
- High: 300-30,000ccm
- Single, Continuous and Burst reading options
- Accuracy Volumetric (% of reading) 1%
- Temperature & Pressure Sensors in flow stream
- Temperature Readings: C°, F°
- Pressure Readings: mmHg, PSI, kPa
- Volumetric Flow Readings – mL/min, L/min, cc/min, cf/min
- Data Port: Serial (RS-232)
- 1/4” Barbed Plastic Compression Fittings

Defender 530
Features
- Includes barbed fitting adapters
- Single, Continuous and Burst reading options
- Accuracy Volumetric (% of reading) 0.75%
- Accuracy Standardized (% of Reading) 1%
- Temperature & Pressure Sensors in flow stream
- Temperature Readings: C°, F°
- Pressure Readings: mmHg, PSI, kPa
- MFC Gas Sensor Factor for Calibration of Alternate Gases other than Clean Air and N2.
- Volumetric Flow Readings – mL/min, L/min, cc/min, cf/min
- Standard Flow Readings – smL/min, sL/min, sccm, scf/min
- 1/4″ ID Swagelok® Compression Fittings, 3/8” fittings on High Model
- Data Port: Serial (RS-232)

FlexCal Series
Mesa Labs’ newest standardized and volumetric primary flow standard offers easy-to-navigate calibrations with unparalleled flow ranges, accuracy and portability.
- USB connectivity
- Flow ranges from 5 ccm to 50 LPM
- Quick start operation
- Graphical LCD display
- User-selectable flow units and time intervals
- Low: 5-500ccm
- Medium: 50– 5 LPM
- High: 0.5 – 50 LPM
- Accuracy 0.5% of reading
- User selectable measurement units Volumetric mL/min, L/min, cc/min, cf/min
- Standardized smL/min, sL/min, scc/min, scf/min
- Temperature °C °F
- Pressure mmHg, PSI, kPa
- Temperature and Pressure Sensor Yes, in flow stream

Metrology Series
DryCal 800
High-Precision Primary Flow Standards for Laboratory and Industrial Process Control Applications
The DryCal 800 positive displacement primary standards provides a cost-effective, entirely dry means of precisely measuring gas flow while maintaining defensible, direct traceability to NIST. +0.15% Accuracy Primary Flow Standard 0.5 sccm to 100 slm Primary Flow Standard The DryCal 800 enables you to perform fast, incredibly accurate flow measurements, with the confidence of Proven DryCal® technology. DryCal 800’s simple touch screen operation and instant gas flow measurements require little user training and minimize user-interpretation – which means that multiple staff members can step in and perform precise calibrations at any time.
DryCal 800
Features
- 0.5 sccm – 100 slpm Flow Range
- 0.25% Measurement Uncertainty (0.5 – 50 sccm)
- 0.15% Measurement Uncertainty (5 – 100,000 sccm)
- 5 Interchangeable Flow Cells
- 1/4″ ID Swagelok® tube compression fitting (1/8″ fittings Model 800-3) (1/2″ outlet fitting Model 800-44)
- Proven DryCal Technology – Accurate and reliable gas flow readings independent of gas species measured
- Innovative – 100:1 turndown ratio; accurately measuring flow rates as low as 0.5 sccm
- Simple touch screen operation
- Quality and Expertise — 0.08% Scope of Accreditation for gas flow by NVLAP of NIST; Over 20 years experience providing training, installations, system consulting and custom solutions
- Serial (RS-232) and USB

Would like to obtain more info and learn more of its applications?