Ametek 303B moisture analyzer

Ametek 303B moisture Analyzer Series

Based on Faraday’s Laws of Electrolysis, the Ametek 303B Process Moisture Analyzer Series absorbs and electrolyzes moisture down to fractional parts per million (ppm) and is linear to its 2000 parts per million by volume (ppmv) maximum reading.
Ametek 303B Process Moisture Analyzer Series

Based on Faraday’s Laws of Electrolysis, the Ametek 303B absorbs and electrolyzes moisture down to fractional parts per million (ppm) and is linear to its 2000 parts per million by volume (ppmv) maximum reading. An electrolytic cell does not require calibration and is virtually specific to water, so it can be used to monitor the moisture content in nearly any background gas.


The unit is compact, lightweight, and suitable for both portable use and permanent installation. The Ametek 303B is available with a choice of power sources covering AC, external DC, and internal battery operation.

the Future of Ametek 303B for Industrial Process Analytics: The MicroView online hygrometer

At ASaP, we’re dedicated to pioneering and delivering the latest in industrial process analytics. This commitment has led us to adopt the MicroView Mini Online Hygrometer from Moisture Control & Measurement Ltd. (MCM) as our new benchmark, moving beyond the previous Ametek 303B gas analyzer. We are confident that the MicroView online hygrometer, with its cutting-edge technology and durable construction, is the future of industrial process analytics, perfectly aligning with our values of innovation and excellence. Integrating this hygrometer into your operations signifies a leap into the next era of industrial analysis.

The MCM MicroView Mini Online Hygrometer Process Moisture Analyzer. A great alternative to the Ametek 3050 moisture analyzer.

Why the MicroView Mini online Hygrometer instead of the Ametek 303B ?

The MicroView mini online hygrometers from MCM are preferred over the Ametek 303B due to their advanced technology, compact and robust design suitable for explosive environments, and its ability to provide precise and reliable moisture measurements. This makes it a fitting choice for industries requiring high accuracy in moisture analysis under stringent safety standards.

Maintaining our commitment to Ametek service

Adopting new technology doesn’t mean sacrificing service for the Ametek 303B. Our commitment is to uphold exceptional service standards for your existing systems, with our experts ensuring a seamless transition and ongoing support to keep your operations smooth. Each industrial setting is unique, and we’re here to discuss how the MicroView mini online hygrometers can fit into your specific processes, offering customized solutions to meet your needs.

Fast, accurate measurement

The Ametek 303B can be situated close to the sample tap, eliminating long tubing runs and reducing the sample transport time of the process gas which improves the overall measurement response time. The Ametek 303B transmits the moisture level to a recorder or control center via its 4-to-20 mA output.

Built-in bypass flowmeter

A built-in bypass flowmeter increases total sample flow to reduce response time. This bypass feature is valuable when the Ametek 303B is in portable service – for example, rapidly analyzing moisture in gas cylinders, where it is essential to purge valves, regulators, and tubing of atmospheric moisture prior to taking measurements.

Ametek 303B Key benefits

  • Digital moisture indicating meter
  • Solid state electronics
  • Rugged moisture cell
  • Highly accurate, adjustable flow control system
  • Portable, with optional carrying bag
  • Powered by internal battery, DC/AC

Ametek 303B Applications

  • Natural gas pipelines and gas treatment processes
  • Air humidity in dry boxes
  • Atmospheres in simulated space chambers
  • Sensing elements in humidity control systems
  • Inert protective atmospheres in brazing or sintering furnaces
  • Moisture in fluorocarbon gases
  • Batch and continuous driers
  • Anhydrous batch chemical processes at start-up
  • Quality control of transistor and diode backfill gas
  • Instrument air systems
  • Cryogenic processes
  • Radar wave guides
  • Other moisture analysis applications

Ametek 303B Markets

  • Natural gas
  • Petrochemical
  • Chemical
  • Other moisture analysis markets

Is the MicroView online Hygrometer suitable for your process?

Contact our Ametek 303B specialist directly

You can contact us is you have a question about Ametek 303B when it suits you. See our specialist’s contact information below.

Hans-Peter Visser - ASaP - Address and contact persons





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Ametek 303B practical solutions

With Ametek 303B ASaP offers practical total solutions. The well-established and complementary ASaP analytical package of services and products is an important contribution to the right solutions for your analytical needs. Moreover, the team spirit and the cooperation with specific partners give us the opportunity to design, build, locally install and commission tailor made sample probes, analyzer systems and shelters for you. All these products and systems can be built according to the latest industry guidelines and certifications.

ASaP is the reputable provider of analytical solutions; We can provide you with a full-service package for including engineering, manufacturing, software development, offshore service, gas analyzers, system integration, and cutting-edge bio-LNG or LNG Custody Transfer Systems (CTMS), LNG Probe-Vaporizers, advanced LNG Sampling Systems, and precise natural gas analysis systems. You are kindly invited to consult our team about Ametek 303B or any analytical challenge!

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