Official manufacturer product imageSampling & Control · Badger Meter / Analytical Technology
A21 Gas Sampler
Continuous pumped sampling from ducts and difficult-to-access locations.
The A21 draws a gas sample to a detector installed in a more accessible position. It combines a brushless-DC diaphragm pump, adjustable flow indication and loss-of-flow alarming in a NEMA 4X enclosure.
Key highlights
- Integrated continuous sample pump
- Front-panel variable flow adjustment
- Local and remote loss-of-flow alarm
- AC or 12 VDC configurations
Gas or measurement duty
Application and detector dependent
Where it fits
Remote sampling from ducts, negative-pressure systems or locations where direct detector access is impractical.
Confirm before specifying
Validate sample transport time, tubing material, gas adsorption or reaction, condensation, filtration, vacuum and loss-of-flow response.
Technical resources
Review the official documentation.
Use the manufacturer information to confirm ratings, approvals, installation details and available configurations. Quantra can help translate the application requirements into a focused selection review.