As a supplier of Yokogawa Pressure Transmitters, I’ve witnessed firsthand the importance of protecting these precision instruments from lightning strikes. Lightning is a natural phenomenon that can cause significant damage to electronic devices, including pressure transmitters. In this blog, I’ll share some practical tips on how to safeguard your Yokogawa Pressure Transmitters from the destructive power of lightning. Yokogawa Pressure Transmitter
Understanding the Threat of Lightning
Lightning is a powerful electrical discharge that occurs during thunderstorms. When lightning strikes, it can generate a massive amount of electrical energy that can travel through power lines, communication cables, and even the ground. This energy can cause voltage surges, which can damage electronic components and disrupt the normal operation of pressure transmitters.
The effects of a lightning strike on a Yokogawa Pressure Transmitter can range from minor malfunctions to complete failure. In some cases, the transmitter may experience temporary glitches, such as inaccurate readings or erratic behavior. In more severe cases, the internal components of the transmitter may be permanently damaged, rendering it useless.
Grounding and Bonding
One of the most effective ways to protect Yokogawa Pressure Transmitters from lightning strikes is to ensure proper grounding and bonding. Grounding provides a path for electrical current to flow safely into the ground, while bonding connects all metal components together to create a low-impedance path for lightning current.
When installing a Yokogawa Pressure Transmitter, it’s essential to follow the manufacturer’s guidelines for grounding and bonding. This typically involves connecting the transmitter to a grounding rod or a common grounding system. The grounding conductor should be of sufficient size to handle the expected lightning current and should be installed in a way that minimizes the risk of damage from physical contact or corrosion.
In addition to grounding the transmitter itself, it’s also important to ensure that all associated equipment, such as power supplies, signal cables, and enclosures, are properly grounded and bonded. This helps to create a comprehensive protection system that can effectively divert lightning energy away from the transmitter.
Surge Protection Devices
Another important aspect of protecting Yokogawa Pressure Transmitters from lightning strikes is the use of surge protection devices (SPDs). SPDs are designed to detect and divert excessive voltage surges caused by lightning or other electrical disturbances. They work by providing a low-impedance path for the surge current to flow to the ground, thereby protecting the connected equipment from damage.
There are several types of SPDs available on the market, including voltage-dependent resistors (VDRs), metal oxide varistors (MOVs), and gas discharge tubes (GDTs). When selecting an SPD for a Yokogawa Pressure Transmitter, it’s important to choose a device that is compatible with the transmitter’s voltage and current ratings. The SPD should also be installed as close as possible to the transmitter to minimize the length of the surge path.
In addition to installing SPDs at the transmitter level, it’s also a good idea to consider installing SPDs at the main power panel and other critical points in the electrical system. This provides an additional layer of protection against lightning-induced voltage surges.
Shielding and Enclosure
Shielding and enclosure can also play an important role in protecting Yokogawa Pressure Transmitters from lightning strikes. Shielding involves the use of conductive materials, such as metal foil or mesh, to surround the transmitter and its associated cables. This helps to block electromagnetic interference (EMI) and radio frequency interference (RFI) caused by lightning.
When selecting a shielded enclosure for a Yokogawa Pressure Transmitter, it’s important to choose a design that provides adequate protection against both direct and indirect lightning strikes. The enclosure should be made of a conductive material, such as aluminum or steel, and should be properly grounded. It should also have a tight seal to prevent moisture and dust from entering the enclosure.
In addition to shielding the transmitter, it’s also important to ensure that all signal cables are properly shielded. This helps to prevent lightning-induced voltage surges from traveling along the cables and damaging the transmitter.
Maintenance and Inspection
Regular maintenance and inspection are essential for ensuring the continued protection of Yokogawa Pressure Transmitters from lightning strikes. This includes checking the grounding and bonding connections, inspecting the surge protection devices, and testing the functionality of the transmitter.
During maintenance and inspection, it’s important to look for signs of damage or wear, such as corrosion, loose connections, or burned components. Any damaged or worn parts should be replaced immediately to ensure the proper operation of the transmitter.
In addition to regular maintenance and inspection, it’s also a good idea to have a lightning protection plan in place. This plan should include procedures for responding to lightning strikes, such as shutting down the transmitter and inspecting it for damage. It should also include guidelines for testing and maintaining the lightning protection system.
Conclusion
Protecting Yokogawa Pressure Transmitters from lightning strikes is essential for ensuring their reliable operation and longevity. By following the tips outlined in this blog, you can minimize the risk of damage to your transmitters and ensure that they continue to provide accurate and reliable measurements.
Abb Pressure Transmitter If you’re interested in learning more about how to protect your Yokogawa Pressure Transmitters from lightning strikes or if you’re looking to purchase a transmitter, please don’t hesitate to contact us. We’re a leading supplier of Yokogawa Pressure Transmitters and can provide you with the expert advice and support you need to make the right decision for your application.
References
- Yokogawa Electric Corporation. (Year). Yokogawa Pressure Transmitter User Manual.
- National Fire Protection Association. (Year). NFPA 780: Standard for the Installation of Lightning Protection Systems.
- International Electrotechnical Commission. (Year). IEC 61643-11: Low-voltage surge protective devices – Part 11: Surge protective devices connected to low-voltage power systems – Requirements and tests.
Iges Instrument Co., Ltd.
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