Wireless instrumentation helps operators add measurement points in remote and difficult-to-access locations, but harsh winter conditions can place additional demands on device power performance. Selecting the right power solution can help maintain communication reliability, reduce maintenance requirements, and support long-term wireless performance even when temperatures drop.

Why It Matters

For oil and gas operators, maintaining visibility into critical process measurements is essential, especially at remote well sites, tank farms, and production facilities. In cold-weather environments, power module performance becomes increasingly important because low temperatures can increase internal battery resistance and raise the risk of communication interruptions. Reliable wireless communication helps reduce unnecessary field visits and ensures critical process data remains available when it is needed most.

Key Takeaways

• Cold temperatures can increase internal battery resistance and make reliable wireless communication more challenging.
• The Blue Power Module is designed for demanding environments, including cold-weather applications and instruments with higher current demands.
• An internal Hybrid Layer Capacitor (HLC) helps support short-duration periods of high current demand during measurement and communication cycles.
• Additional voltage stability can help reduce power-related communication interruptions.
• Digital tools such as the Power Module App (PMA) and Power Module Life Estimator support maintenance planning and visibility into power module health.

The Challenge of Wireless Performance in Extreme Cold

Wireless instrumentation is widely used in environments where traditional wired installations can be difficult, time-consuming, or expensive. In many cases, operators need additional measurement points at remote locations where frozen ground, limited installation windows, and harsh weather conditions make running new wiring impractical. Typical applications include remote well sites, tank level monitoring tied to shut-in, pressure monitoring, temperature monitoring, tank farms, and production facilities.

While wireless technology simplifies deployment and maintains access to critical process data, power performance becomes increasingly important over time. As power modules age, internal battery resistance increases, and cold temperatures can amplify these effects. The result can be larger voltage drops and a greater risk of communication interruptions. For operators in remote locations, communication loss may require field visits to troubleshoot instruments or replace power modules, increasing labor costs, and potentially contributing to production delays or unplanned downtime.

Understanding the Power Demands of Wireless Devices

Wireless devices draw very little current between sensor updates but require a brief pulse of higher current when taking and transmitting measurements. Because internal resistance increases with both age and cold temperatures, these high-current events can create larger voltage drops during operation. Over time, this can reduce available power and contribute to communication interruptions. Applications operating in demanding environments therefore require power solutions that help maintain reliable wireless communication throughout the life of the device.

How the Blue Power Module Supports Reliability

Emerson addresses cold-weather power challenges through the Blue Power Module, the Power Module App, and the Power Module Life Estimator. The Blue Power Module is designed to support reliable wireless operation and provide extended battery life in demanding environments and applications with higher current demands.

The Blue Power Module differs from the standard Black Power Module by using larger D-cell batteries and an internal Hybrid Layer Capacitor. Larger batteries provide greater energy capacity and longer operating life, while the HLC stores energy between device update cycles and supports periods of higher current demand.

In cold-weather applications, the HLC helps reduce voltage drops during short periods of high current demand by supplying additional energy during measurement and communication events. This added voltage stability helps support communication continuity, extend usable power module life, and reduce the risk of communication interruptions caused by low-voltage conditions. The Blue Power Module helps maintain a more stable voltage profile during demanding operating conditions, supporting longer and more predictable power module performance.

Combining Power Hardware with Predictive Maintenance Tools

Power management extends beyond battery capacity alone. The Power Module App provides visibility into power module health and supports proactive maintenance planning, while the Power Module Life Estimator helps users evaluate how operating conditions, update rates, network topology, and power module selection can affect expected battery life. Together, these tools can help improve wireless reliability, extend power module life, and reduce the risk of power-related communication disruptions.

When combined with the appropriate power module selection, these tools help users gain greater visibility into replacement schedules and maintenance requirements. Maintenance teams can better plan activities before issues occur and manage wireless instrumentation assets more effectively throughout their service life.

Closing Thoughts

Cold-weather environments place additional demands on wireless instrumentation power systems. Emerson’s power module portfolio provides options designed to support a variety of operating conditions, helping users align power module performance with application requirements while maintaining reliable wireless communications. When combined with tools such as the Power Module App and Power Module Life Estimator, operators gain greater visibility into power module health and maintenance planning.

Next Step: Learn more about Emerson’s wireless power solutions and explore available options on the Emerson Power Modules page.