Perma Pure
DM Series – Portable Gas Dryers for Reliable Moisture Removal
When you need effective moisture removal without power, purge gas, or complex installation, the Perma Pure DM Series delivers a simple and robust solution. These compact desiccant–membrane gas dryers protect your measurements by removing only water vapor – while preserving the true composition of the gas sample.
Designed for portability and ease of use, the DM Series is ideal for field work, mobile analyzers, and temporary measurement setups.
Selective membrane drying combined with desiccant simplicity
The DM Series combines Nafion™ membrane technology with an integrated desiccant canister to achieve efficient drying in a compact format.
Your sample gas flows exclusively through Nafion tubing, which selectively transfers water vapor through the membrane wall. Instead of using a purge gas, the removed moisture is absorbed by a surrounding molecular sieve desiccant. This design ensures continuous drying without altering other gas components.
Because only water vapor is removed, measurement integrity is maintained – even for reactive or sensitive gases.
Compact design that works anywhere – no utilities required
The DM Series is built for applications where space, power, or infrastructure is limited. No electrical supply, pumps, or purge gas connections are needed.
The rugged, lightweight housing makes the dryer easy to integrate into portable instruments or temporary setups. A transparent window allows you to visually monitor the condition of the indicating desiccant, so maintenance is straightforward and predictable.
Key features that simplify portable gas conditioning
- Removes only water vapor – preserves gas composition
- No power or purge gas required – ideal for mobile use
- Continuous drying with fast response time
- Low achievable dew points, typically down to –30 °C
- Replaceable desiccant for quick recharging
- Corrosion-resistant materials for harsh gas streams
- Lightweight, compact construction for easy integration
Designed for field instruments, portable analyzers, and temporary setups
The DM Series is particularly well suited for:
- Portable gas analyzers and handheld instruments
- Mobile emissions testing and temporary monitoring
- Laboratory setups requiring simple moisture protection
- Gas sampling in remote or utility-limited locations
- Pre-conditioning of gas streams to protect sensitive sensors
Clear benefits for your measurements and equipment
By removing moisture directly at the sample point, the DM Series helps you:
- Protect analyzers from condensation and corrosion
- Improve measurement stability in changing environments
- Reduce downtime and maintenance
- Extend instrument lifetime
- Deploy reliable gas drying anywhere, without added infrastructure
These products are used within these applications
Petrochemical
Monitor complex gas streams with precision to safeguard processes, personnel, and production quality.
Biogas
Handle fluctuating gas compositions and strict quality requirements with reliable biogas analysis systems.