Eddy Current Integrated Transmitter CWY-DO-813601-01-03-05-02: Cost-Effective for Multi-Point Vibration Monitoring

Auxiliary equipment such as fans and pumps in power plants, though not “core assets” like steam turbines or boilers, have vibration conditions that directly affect the stability of the entire unit. Excessive vibration in fans may cause blade breakage, while excessive vibration in pumps can easily lead to medium leakage. Vibration monitoring relies on specialized equipment, and eddy current transmitters are commonly used for this purpose. However, many power plants face three challenges when installing vibration monitoring for auxiliary equipment: exceeding the procurement budget due to a large number of measurement points, cumbersome installation and maintenance for scattered points, and waste from choosing high-precision transmitters when unnecessary. The eddy current transmitter CWY-DO-813601-01-03-05-02 solves these three problems perfectly. It is particularly suitable for scenarios sensitive to cost, with a large number of measurement points, and where accuracy meets the requirements of auxiliary equipment. Below is a detailed explanation of how it fits in these scenarios.

Cost-Sensitive Scenarios: Controllable Total Investment for Multi-Point Procurement

Many power plants have tight budgets when implementing vibration monitoring for auxiliary equipment. This is especially true for the renovation of old power plants, where dozens of fans and pumps may need vibration measurement points. If imported or high-precision eddy current transmitters are chosen, the cost per unit is high, and the total investment for dozens of units can easily exceed the budget.

The eddy current transmitter CWY-DO-813601-01-03-05-02 has a distinct advantage in terms of cost. It does not require an additional signal conditioning module—many traditional eddy current transmitters need a dedicated conditioning module to function, which adds extra cost and increases the overall investment. In contrast, this model features an “integrated” design, with built-in signal processing capabilities. Once purchased, it can be used directly by connecting to a power supply and monitoring system, eliminating the cost of a separate module.

For example, a power plant needs to install vibration monitoring for 8 induced draft fans and 6 forced draft fans, with 2 measurement points per piece of equipment, totaling 28 points. If traditional transmitters with conditioning modules are selected, the cost of the modules alone would account for 30% of the total procurement cost for 28 sets. By switching to the CWY-DO-813601-01-03-05-02, there is no need to purchase modules, directly saving this portion of the cost and keeping the total budget within the expected range. Additionally, the cost of spare parts is low; replacing parts when faults occur is more affordable than with high-precision transmitters.

If your power plant is concerned about exceeding the budget for multi-point procurement or wants to ensure monitoring effectiveness while controlling costs, please contact us. We can provide customized procurement plans based on the number of your measurement points, ensuring every penny is spent wisely.

Scenarios with a Large Number of Measurement Points: Easy Installation and Maintenance, Suitable for Scattered Points

Auxiliary equipment in power plants is often scattered: induced draft fans are in the boiler room, forced draft fans in the air compressor room, circulating water pumps in the water treatment area, and condensate pumps in the turbine room. A large number of scattered measurement points lead to significant labor and material waste if installation and subsequent maintenance are cumbersome.

The eddy current integrated transmitter CWY-DO-813601-01-03-05-02 is extremely easy to install in scenarios with many measurement points. It is small in size and light in weight, requiring no complex brackets—simply find a location near the vibration measurement point of the equipment, fix it with screws, and it is ready to use. Unlike some transmitters that require welding of dedicated brackets, this model saves installation time. Moreover, wiring is simple: it outputs standard signals, so a single cable can transmit signals to the main control room without the need for multiple wires. Even if the measurement points are far from the main control room, signal attenuation is minimal, and no repeaters are required.

Maintenance is even more convenient. When traditional transmitters fail, they must be removed for repair, which first requires disconnecting the conditioning module—a tedious process. This integrated transmitter is equipped with a fault self-diagnosis function: if the probe is damaged or the signal is interrupted, it directly outputs a fault signal. Maintenance personnel can locate the problem immediately on-site without checking each point one by one. Furthermore, the probe and transmitter are separate components; if the probe is damaged, only the probe needs to be replaced, not the entire transmitter. This reduces maintenance costs and does not affect other measurement points.

For instance, a power plant with over 30 auxiliary equipment vibration points distributed across 4 workshops completed the installation of this transmitter with 2 workers in just 2 days. During subsequent maintenance, fixing a faulty point takes only 10 minutes. If you have questions about wiring planning or installation location selection for multiple measurement points, we can provide on-site surveys and wiring guidance to improve installation efficiency.

Accuracy-Adapted Scenarios: Meets Power Plant Auxiliary Equipment Requirements, No “Wasteful Spending”

The vibration monitoring accuracy required for power plant auxiliary equipment is not as strict as that for steam turbines (which demand “micrometer-level” precision). The allowable vibration values of fans and pumps are inherently higher than those of steam turbines. For example, the vibration limit of an induced draft fan is typically 0.12mm, and that of a circulating water pump is 0.10mm. As long as the measurement accuracy of the transmitter can cover this range and accurately capture excessive vibration signals, it is sufficient. Choosing an eddy current transmitter with overly high precision (e.g., capable of measuring 0.001mm) is essentially “overkill” and results in wasted expenditure.

The accuracy of the eddy current transmitter CWY-DO-813601-01-03-05-02 perfectly matches the needs of power plant auxiliary equipment. Its measurement range and accuracy can accurately monitor vibration changes in fans and pumps—for example, it can clearly capture vibration peaks when a fan starts and stable vibration values during pump operation. It neither misses alarms due to insufficient accuracy nor wastes costs due to excessive precision.

Take an example: the normal vibration value of a forced draft fan in a power plant ranges from 0.05mm to 0.08mm during operation, and an alarm is required if vibration exceeds 0.12mm. This transmitter can stably monitor vibration changes of 0.01mm and issue an early warning when the value approaches the limit, fully meeting operational needs. If a high-precision transmitter were used instead, although it could measure changes of 0.001mm, this level of precision is completely unnecessary for a forced draft fan, and the cost would be double.

If you are unsure about the accuracy requirements for your power plant’s auxiliary equipment (e.g., specific pump or fan models), please contact us. We will help you determine whether this transmitter is suitable based on the operating parameters and vibration limits of your auxiliary equipment, avoiding waste from blindly pursuing high precision.

Anti-Interference Adaptation: Suitable for Complex Power Plant Environments, Long-Term Stability

The environment in power plants is not “friendly”: there is electromagnetic interference from motors, dust from fans, and humidity in pump rooms. If an eddy current transmitter has poor anti-interference capabilities, it is prone to vibration data drift and excessive signal noise, which affects monitoring accuracy.

The eddy current integrated transmitter CWY-DO-813601-01-03-05-02 has been optimized for anti-interference. Its housing is made of metal, which can shield most electromagnetic interference—even at measurement points near motors, vibration data is not affected by the motor’s magnetic field. The probe surface is coated with an anti-corrosion layer, so humidity in pump rooms and dust near fans rarely damage the probe, extending its service life.

For example, in the condensate pump room of a power plant, humidity is consistently above 85%, and there is electromagnetic interference from operating pumps. After installing this transmitter, vibration data remained stable for over six months, with no signal abnormalities caused by humidity or interference. If a transmitter with poor anti-interference capabilities were used, calibration might be required monthly, consuming time and effort.

Practical Applications: Which Specific Auxiliary Equipment Scenarios Are Most Suitable?

In addition to the aforementioned induced draft fans, forced draft fans, circulating water pumps, and condensate pumps, this eddy current integrated transmitter is also highly suitable for other auxiliary equipment in power plants, such as:

Pulverized coal fans: Typically, there are 2 measurement points per unit (one at the motor end and one at the fan end). When multiple units are installed side by side, this transmitter offers low cost and convenient wiring;

Drainage pumps: Distributed in various corners of the turbine room with scattered measurement points. Its integrated design facilitates installation, and no full-unit disassembly is needed for maintenance;

Primary air fans: Vibration values change stably during operation, and the transmitter’s accuracy is perfectly matched—no expensive high-precision transmitters are required.

These auxiliary equipment share common characteristics: a large number of measurement points, non-extreme vibration accuracy requirements, and cost sensitivity in procurement and maintenance. These exactly align with the advantages of the CWY-DO-813601-01-03-05-02, making it a reliable choice.

If your power plant is renovating vibration monitoring for auxiliary equipment such as fans and pumps, facing challenges like a large number of measurement points, tight budgets, or difficulty matching accuracy, or if you want to confirm whether the CWY-DO-813601-01-03-05-02 is suitable for your specific auxiliary equipment models, please contact us:

E-mail: sales@yoyik.com
Tel: +86-838-2226655
Whatsapp: +86-13618105229

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