Water is one of the most damaging contaminants a hydrocarbon stream can carry, and finding it early – often at parts-per-billion levels – is the entire job of trace moisture instrumentation. This is exactly the space where the Panametrics Moisture Analyser line, now part of Baker Hughes, has earned its reputation, delivering repeatable, drift-resistant moisture readings across natural gas, hydrocarbon liquids, and industrial gas streams. As a specialist supplier, Automabuy sources genuine Panametrics analysers across the portable, fixed in-line, and TDLAS product ranges, with application-specific sizing support and transparent pricing. This guide covers how trace moisture measurement actually works, the main product configurations available, what drives pricing, and how to select the right analyser for your application.
How Trace Moisture Measurement Actually Works
A Panametrics moisture analyser measures water vapour concentration in a gas or liquid stream using one of two proven sensing principles: aluminium oxide (Al₂O₃) capacitance sensing or tunable diode laser absorption spectroscopy (TDLAS). In an aluminium oxide sensor, moisture diffuses into a thin oxide layer and changes its electrical capacitance in direct proportion to the surrounding humidity, giving a fast, stable reading even at very low concentrations. TDLAS instruments instead pass a laser tuned to a specific water-absorption wavelength through the gas sample and measure how much light is absorbed, which is highly selective and largely immune to interference from other gas components. Because neither method depends on moving parts or consumable reagents, both configurations are well suited to continuous, unattended operation in the field.
Portable vs Fixed vs TDLAS Panametrics Configurations
A Panametrics Moisture Analyser is available as a portable handheld unit for spot checks and field surveys, a fixed in-line analyser permanently mounted on a process line for continuous monitoring, or a TDLAS-based system for the highest accuracy trace measurement typically required in custody transfer. Portable units are especially valuable for troubleshooting, commissioning, and periodic verification since they require no permanent installation, while fixed and TDLAS configurations are chosen when continuous, DCS-integrated monitoring is needed to protect equipment and meet pipeline or contractual moisture specifications on an ongoing basis.
Panametrics Models & Typical Pricing Range
| Model/Type | Best Suited For | Typical Price Range (USD) |
| Portable Moisture Analyzer | Spot checks, field surveys, rental/temporary use | $4,000 – $10,000 |
| Fixed In-Line Analyzer (Al₂O₃ Sensor) | Continuous online monitoring on pipelines and process lines | $7,000 – $16,000 |
| TDLAS-Based Analyzer | High-accuracy trace moisture in natural gas custody transfer | $18,000 – $45,000 |
| Multi-Point / Panel-Integrated System | Multiple monitoring points across a plant, DCS-integrated | $25,000 – $60,000+ |
Pricing above reflects typical general-industry ranges and varies significantly based on sensor range, hazardous area certification, output/communication requirements, and installation configuration. Automabuy provides application-specific quotes rather than relying on generic price ranges for final purchasing decisions.
How to Select the Right Panametrics Moisture Analyzer
Correct selection depends on matching sensor type and configuration to actual process conditions rather than defaulting to whichever option is most familiar. Key factors to confirm before ordering include:
● Required moisture detection range for the application – trace ppb levels versus general process monitoring
● Whether portable or permanently installed monitoring better suits the process and access constraints
● Process gas or liquid composition, pressure, and temperature for correct sensor selection
● Hazardous area classification requiring ATEX, IECEx, or CSA certification
● Communication protocol requirements (4–20 mA, HART, Modbus) for integration with existing control systems
Underestimating the required detection range is one of the more consequential oversights in moisture analyser selection custody transfer and hydrate-prevention applications typically require far tighter sensitivity than general process monitoring, and specifying the wrong sensor can create compliance and reliability problems well after installation.
Key Benefits of Genuine Panametrics Moisture Analyzers
● Trace-level detection down to low parts-per-billion, suitable for the most demanding gas quality requirements
● Stable, drift-resistant sensors that reduce recalibration frequency and unplanned downtime
● Configurations for both continuous online monitoring and portable field verification
● Strong repeatability for custody transfer and regulatory reporting applications
● Compatibility with standard communication protocols for control system integration
Industries That Rely on Panametrics Moisture Measurement
Oil and gas facilities use Panametrics moisture analysers extensively for pipeline dehydration monitoring, custody transfer, and hydrate prevention across upstream, midstream, and downstream operations. LNG and petrochemical plants rely on the technology to protect cryogenic and process equipment, where even trace moisture can cause freezing or catalyst damage. Power generation facilities monitor moisture in fuel gas and instrument air systems to protect turbines and control equipment. Pharmaceutical and speciality chemical manufacturers use trace moisture analysers to verify inert gas purity and protect moisture-sensitive processes and products.
The Automabuy Sourcing Advantage
When you order a moisture analyser through Automabuy, our technical desk reviews your process conditions, required detection range, and hazardous area classification before recommending a specific configuration and providing pricing rather than defaulting to a generic catalogue selection. Every unit shipped is genuine, traceable to an authorised Panametrics channel, and accompanied by documentation, calibration certificates, and a manufacturer warranty. For clients managing multiple monitoring points across a facility, we maintain records of previously supplied configurations, making future capacity additions and replacements straightforward instead of a fresh specification exercise each time.
Frequently Asked Questions
How much does a Panametrics moisture analyser typically cost?
Pricing varies significantly by configuration, ranging from roughly $4,000 for a basic portable unit to $60,000 or more for multi-point, panel-integrated TDLAS systems – Automabuy provides application-specific quotes rather than generic pricing.
What’s the difference between aluminium oxide and TDLAS sensors?
Aluminium oxide sensors measure moisture through a capacitance change in an oxide layer and suit most general trace-moisture applications, while TDLAS uses laser absorption spectroscopy for higher selectivity and accuracy, typically justified where custody transfer precision is required.
Can a Panametrics moisture analyzer be used on both gas and liquid streams?
Yes, Panametrics offers configurations specifically designed for both gas and liquid applications, with sensor and process-connection differences optimised for each stream type.
Can Automabuy help select the right analyzer configuration for my application?
Yes. Our technical team reviews your process conditions, required detection range, and hazardous area classification to recommend the correctly configured Panametrics moisture analyzer for your specific application.
Are Panametrics moisture analyzers suitable for custody transfer applications?
Yes, select TDLAS and fixed in-line configurations meet the accuracy requirements typically needed for custody transfer and regulatory reporting applications in oil and gas service.
Conclusion
Reliable trace moisture measurement has become essential wherever hydrate formation, corrosion, or off-spec product rejection can turn a small contamination issue into a costly shutdown, and Panametrics technology delivers the sensitivity and stability that critical applications demand when correctly specified. Automabuy’s technical sourcing team is ready to help you specify, quote, and deliver the right Panametrics Moisture Analyzer configuration for your next installation or monitoring upgrade.
