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Moisture Analysis

Hydra2O is an analytical services that helps you predict long-term moisture ingress for your sealed enclosure and prescribes precise desiccant requirements to protect it.

Hydra₂O™ Moisture Analysis Service

Hydra₂O™ Moisture Analysis is an analytical service that helps you predict long-term moisture ingress for your sealed enclosure and prescribes precise desiccant requirements to protect it.

HYDRA2O™ BENEFITS

Many products and mechanisms require moisture protection in order to avoid corrosion, mold growth, and other harmful moisture effects. The most common and effective solutions to protect a moisture-sensitive item is to place it inside a sealed enclosure along with a desiccant to adsorb any free moisture.

Whether a sealed enclosure is housing a high-tech assembly or it’s used as the storage container for a moisture-sensitive product, our Hydra₂O™ Moisture Analysis tool can accurately calculate the amount of the desiccant required to maintain a target dryness level inside your enclosure for almost any length of time.

Hydra₂O™ Moisture Analysis tool provides long-term moisture management solutions to high-tech optical assembly and sealed system developers in the Aerospace and Defense industry. The Hydra₂O™ Moisture Analysis tool is the only moisture analysis service capable of utilizing detailed project-specific data and prescribing the necessary measures to meet the specific dryness targets demanded by engineers.

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What is moisture analysis?

Moisture analysis involves measuring the level of moisture in solids, liquids, and gasses. However, our moisture analysis service is specifically designed to help you predict long-term moisture ingress for your sealed enclosure and to prescribe the precise desiccant required to protect it.

If your project requires precise moisture level maintenance throughout its lifespan, contact us for a custom desiccant solution!

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Our Hydra₂O™ Moisture Analysis Service

Our Hydra₂O™ Moisture Analysis is essentially a very comprehensive calculator used to predict long-term moisture ingress for your sealed enclosure and prescribe precise desiccant requirements to protect it.

You will be provided with a precise amount of desiccant needed to protect your enclosure for a specified amount of time and input parameters. The Hydra₂O™ Moisture Analysis Tool can adjust these parameters (e.g. seal materials, etc), in up to three “Runs” for the specific enclosure to find out what will best help you achieve the most effective combination.

Unlike standard packing specifications that cannot specify moisture requirements beyond the general parameters (such as MIL-STD-2073-1), the Hydra₂O™ Moisture Analysis Tool takes into account the different variables that are important to each unique situation, such as the:
  • Estimate of moisture held by materials inside the enclosure when it is sealed
  • Information about the materials inside of the enclosure
  • Moisture in hygroscopic materials
  • Target dryness level and length of time moisture protection is required
  • Container wall permeability
  • Material and geometry of any non-metallic enclosure walls
  • Seal types, materials, cross-section geometry, and length
  • Leak down test data (starting and ending pressure, time, gas medium)
  • Environmental exposure conditions
  • Environmental conditions under which the enclosure is sealed if not dry gas purged
  • Length of time over which protection is required
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How To Get Started With Hydra₂O™

  1. If you're in need of a custom solution for moisture control, you can get started by contacting our engineers who will gather the required information from you for use with our Hydra tool (see information list below).

  2. Once our engineers gather the information needed they will input that data into our Hydra₂O™ tool.

  3. The calculations are performed and you’re provided with the information you need. This information will be shared with you over an email or phone call (with an accompanying email of the results). This is usually a jumping-off point for our engineers to work with you in setting you up with the right custom desiccant solution.
Do you have a difficult moisture problem? Contact our sales department about putting Hydra₂O™ to work for you.

CONTACT US

**AGM can perform a Hydra₂O™ analysis without all of the information in this list; however, the results may lose accuracy. In many cases, AGM can estimate some missing factors or uncertainty due to a lack of information. Additionally, AGM has an extensive materials library that can make up for some lack of specific knowledge. AGM will execute a non-disclosure agreement (NDA) if required for sharing of information.

Benefits Of Using Our Hydra₂O™ Moisture Analysis Tools

Our Hydra₂O™ Moisture Analysis Tool provides several extra benefits that cannot be found elsewhere including:
  • Our Hydra₂O™ Moisture Analysis Tool provides several extra benefits that cannot be found elsewhere including:
  • Quickly analyzes the effects of different materials and sealing techniques on the life of an enclosure
  • Reduces the risk of product failure
  • Maximizes opportunities to reduce enclosure costs
  • Reduces long-term maintenance and service costs
  • Reduced cost and time risk associated with product performance testing
  • Reduced cost and time risk associated with product performance testing
  • Takes into account more critical factors for measuring and managing moisture control than standard package requirements

Ready to get started?

Find the best moisture control solution for your sealed enclosure with our Hydra₂O™ Moisture Analysis Tool.

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Frequently Asked Questions


1. Can the Hydra₂O™ Moisture Analysis Tool provide me with a better, more accurate prediction of enclosure performance?

Yes, because our Hydra₂O™ Moisture Analysis Tool Hydra2O’s calculations take a wide array of factors into account in order to generate the most accurate prediction of enclosure performance possible.

Standard packaging specifications such as MIL-STD-2073-1 and IPC/JEDEC J-STD-033 provide guidance on protecting moisture-sensitive materials over the short term and for specific applications. For example, the military packaging specification MIL-STD-2073-1 recommends 1.2 units of desiccant per cubic foot of air volume for metal containers, with a few refinements to account for dunnage.

Standard packaging specifications like MIL-STD-2073-1 have proven themselves over time to be good enough for specific applications. That said, these standard specifications tend to be “blunt instruments”: they’re typically meant to be used only for short-term shipping and storage (usually one year or less), and they recommend a conservative amount of desiccant in order to make up for unknowns in the packaging or in the exposure conditions.

Unfortunately, moisture protection over the long term and for non-standard applications can be a complicated and difficult problem — too difficult for a standard specification to address fully. Errors in basic assumptions can compound over time and become dangerous in the long term. Extrapolating a short-term desiccant recommendation for a long-term scenario may lead to inadequate protection if an enclosure is more permeable or leaky than the “specification enclosure”.

On the opposite side of the coin, the simplified assumptions behind a standard packaging specification can also lead to the over-use of desiccants. For instance, what can be done for an enclosure that is extremely well sealed, and that doesn’t have enough space for the full standard desiccant recommendation? How well do the enclosure seals really need to be, and can their design be modified to improve their long-term performance? Therefore, standard packaging specifications provide inadequate guidance for addressing these questions.

2. Can the Hydra₂O™ Moisture Analysis Tool help me set and hit a specific long-term dryness target?

Yes, Hydra₂O™ can predict the moisture levels in an assembly for years into the future, so one can aim for — and hit — a target dryness level. This is because Hydra₂O™ accounts for all of the factors that affect dryness levels.

For instance, the moisture-holding capacity of desiccant varies with temperature and dryness level — as shown on the standard desiccant isotherm chart below. This information is far too complex to be taken into account with a standard packaging specification, or even hand calculations, but desiccant isotherms are included in Hydra2O’s calculations.
Different types of applications require different dryness levels. For instance, electronic assemblies typically need to limit the moisture content to no more than 5000 parts per million (ppm) in order to prevent corrosion and short circuits, but optical assemblies must hold the frost point below the lowest operating temperature so that lenses and mirrors don’t fog. A frost point requirement of -40°C, which is not unusual for an optical assembly in an aerospace application, equates to a moisture content of only 125 ppm. This is 40 times drier than the typical electronic requirement.

Therefore, a standard packaging specification like MIL-STD-2073-1 can’t provide guidance on specific dryness levels because it doesn’t even acknowledge that different targets exist. And, if a product doesn’t fit the situation for which a specification was written, the specification’s desiccant recommendation may be useless, or, even worse, dangerous.

4. How will the Hydra₂O™ Moisture Analysis Tool help me reduce my long-term maintenance and service costs?

Hydra₂O™ can reduce long-term maintenance and service costs since it can predict a container’s desiccant life with a high level of confidence, it is possible to maximize the time interval between desiccant change-outs while being confident that the enclosure contents will not be put at risk. The designer can also explore the tradeoff between the additional upfront costs of premium seals versus the long-term savings associated with reduced product maintenance.

5. How will the Hydra₂O™ Moisture Analysis Tool help me reduce my cost and time risk associated with product performance testing?

In today’s world of ever shorter product development cycles, cutting product testing times can mean the difference between a product being the first-to-market or being a “me-too” product. Unfortunately, testing for moisture ingress can be a time-consuming process because it takes a long time for the moisture to work its way into a well-sealed enclosure. Therefore, Hydra₂O™can reduce product test time because it provides the correct data for getting the design right the first time around — no repeat product testing is required!

6. How will the Hydra₂O™ Moisture Analysis Tool help me mitigate the design risk associated with input parameters?

Hydra2O can quickly determine the effects of parameter variability on the performance of an enclosure and put a boundary on their effects. For example, perhaps the exact conditions in which the product will be used or stored are unknown, or there is some uncertainty in the permeability of one of the enclosure’s seals. Perhaps the uncertainty really isn’t that important — or maybe it’s critical! Either way, the designer can focus on the aspects of the enclosure design that really matter once the criticality of each parameter is known.

EXISTING SOLUTION

Standard packaging specifications such as MIL-STD-2073-1 and IPC/JEDEC J-STD-033 provide guidance on protecting moisture-sensitive materials over the short term and for specific applications. For example, the military packaging specification MIL-STD-2073-1 recommends 1.2 units of desiccant per cubic foot of air volume for metal containers, with a few refinements to account for dunnage.

Standard packaging specifications like MIL-STD-2073-1 have proven themselves over time to be good enough for specific applications. That said, these standard specifications tend to be “blunt instruments”: they’re typically meant to be used only for short-term shipping and storage (usually one year or less), and they recommend a conservative amount of desiccant in order to make up for unknowns in the packaging or in the exposure conditions.

Unfortunately, moisture protection over the long term and for non-standard applications can be a complicated and difficult problem — too difficult for a standard specification to address fully. Errors in basic assumptions can compound over time and become dangerous in the long term. Extrapolating a short-term desiccant recommendation for a long-term scenario may lead to inadequate protection if an enclosure is more permeable or leaky than the “specification enclosure”.

On the opposite side of the coin, the simplified assumptions behind a standard packaging specification can also lead to over-use of desiccant. For instance, what can be done for an enclosure that is extremely well sealed, and that doesn’t have enough space for the full standard desiccant recommendation? How good do the enclosure seals really need to be, and can its design be modified to improve its long-term performance?

Standard packaging specifications provide inadequate guidance for addressing these questions.

THE HYDRA2O™ SOLUTION

AGM’s Hydra2O Moisture Analysis service overcomes the drawbacks of standard packaging specifications by taking into account the variables that are important to specific applications:

  • Length of time over which protection is required
  • Environmental exposure conditions
  • Seal types and materials
  • Number of seals
  • Container wall permeability
  • Moisture in hygroscopic materials

SET A DRYNESS TARGET,
AND THEN HIT IT

Different types of applications require different dryness levels. For instance, electronic assemblies typically need to limit the moisture content to no more than 5000 parts per million (ppm) in order to prevent corrosion and short circuits, but optical assemblies must hold the frost point below the lowest operating temperature so that lenses and mirrors don’t fog. A frost point requirement of -40°C, which is not unusual for an optical assembly in an aerospace application, equates to a moisture content of only 125 ppm. This is 40 times drier than the typical electronic requirement.

Unfortunately, a standard packaging specification like MIL-STD-2073-1 can’t provide guidance on specific dryness levels because it doesn’t even acknowledge that different targets exist. And, if a product doesn’t fit the situation for which a specification was written, the specification’s desiccant recommendation may be useless, or, even worse, dangerous.

By contrast, Hydra2O can predict the moisture levels in an assembly for years into the future, so one can aim for — and hit — a target dryness level. This is because Hydra2O accounts for all of the factors that affect dryness levels.

For instance, the moisture-holding capacity of desiccant varies with temperature and dryness level — as shown on the standard desiccant isotherm chart below. . This information is far too complex to be taken into account with a standard packaging specification, or even hand calculations, but desiccant isotherms are included in Hydra2O’s calculations.

REDUCE RISK & COST

Hydra2O’s flexible inputs mean that it can quickly analyze the effects of materials and sealing techniques on the life of an enclosure. Will the humidity level inside a container go out of bounds during the fourth, fifth, or even tenth year of storage? Can the cost of an optical assembly’s housing be reduced by switching to an alternate seal material? Because Hydra2O accounts for all critical factors, including seal materials, the designer can reduce the risk of product failure while at the same time exploring opportunities to reduce costs.

Hydra2O can also reduce long-term maintenance and service costs. Because Hydra2O can predict a container’s desiccant life with a high level of confidence, it is possible to maximize the time interval between desiccant change-outs while being confident that the enclosure contents will not be put at risk. The designer can also explore the tradeoff between the additional upfront costs of premium seals versus the long-term savings associated with reduced product maintenance.

In addition to reducing maintenance and service costs, Hydra2O can also reduce the cost and time risk associated with product performance testing. In today’s world of ever shorter product development cycles, cutting product testing times can mean the difference between a product being the first-to-market or being a “me-too” product. Unfortunately, testing for moisture ingress can be a time-consuming process because it takes a long time for moisture to work its way into a well-sealed enclosure. Hydra2O can reduce product test time because it provides the correct data for getting the design right the first time around — no repeat product testing is required.

Finally, Hydra2O can mitigate the design risk associated with uncertainty in input parameters. For example, perhaps the exact conditions in which the product will be used or stored are unknown, or there is some uncertainty in the permeability of one of the enclosure’s seals. Hydra2O can quickly determine the effects of parameter variability on the performance of an enclosure and put a bound on their effects. Perhaps the uncertainty really isn’t that important — or maybe it’s critical! Either way, the designer can focus on the aspects of the enclosure design that really matter once the criticality of each parameter is known.

INFORMATION WE NEED FOR MOISTURE ANALYSIS

  • Target dryness level and length of time over which protection is required
  • External conditions (AR 70-38 Hot-Humid or Variable High Humidity are default options)
  • Enclosure air volume
  • Seal materials, cross section geometry, and length
  • Material and geometry of any non-metallic enclosure walls
  • Environmental conditions under which enclosure is sealed before being put into service if enclosure is not dry gas purged
  • Leak down test data (starting and ending pressure, time, gas medium)
  • Estimate of moisture held by materials inside enclosure when it is sealed up; if this information is not available, then information about the materials inside the enclosure
*AGM can perform a Hydra2O analysis without all of the information in this list; however, the results may lose accuracy. In many cases, AGM can estimate some missing factors or the uncertainty due to lack of information. Additionally, AGM has an extensive materials library that can make up for some lack of specific knowledge. AGM will execute a non-disclosure agreement (NDA) if required for sharing of information.

HYDRA2O™

Do you have a difficult moisture problem?
 
Contact AGM’s Sales Department about putting
Hydra2O to work for you.

AGM Container Controls, Inc.
3526 E. Fort Lowell Rd.
Tucson, AZ 85716
520.881.2130
agmwebsales@agmcontainer.com

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