Vaisala has introduced a unique and innovative solution to achieve on-line monitoring of hexafluoride* (SF6) insulation in high voltage electrical equipment. Vaisala's DPT145 micro-water density multi-parameter transmitter combines on-line dew point and pressure detection capabilities, making it an ideal tool for continuous real-time evaluation of SF6 insulation performance.
There are many switches and circuit breakers in power transmission and distribution equipment that use hexafluoride* as the insulating gas to prevent arcing when the switch is turned off and to protect the equipment from malfunction. The Vaisala DPT145 uses direct standardized pressure measurements to immediately detect any leaks, while the online dew point detection function provides early warning of moisture problems. High humidity affects the insulating properties of the insulating gas and increases the probability of failure.
Vaisala's DPT145 micro water density transmitter is the only online instrument on the market that can monitor seven parameters simultaneously. The table directly measures the dew point, pressure, and temperature, and calculates parameters such as density, normalized pressure, atmospheric dew point, and micro-water PPM.
Since seven different parameters can be monitored simultaneously with one transmitter instrument, the piping system requires fewer mechanical connections and is less likely to leak. Because of lower investment, lower installation costs, and small on-site maintenance requirements, the meter will save money and reduce consumption.
What's more, the excellent long-term stability makes the instrument able to provide reliable, high-quality online measurements without having to verify and maintain it. In addition, since no on-site sampling is required, SF6 gas will not leak into the air, so this on-line monitoring scheme is very environmentally friendly.
In the coming weeks, DPT145 will make its debut at several specific exhibitions in Japan, Germany and China. The instrument will be officially launched in the third quarter of 2011.
There are many switches and circuit breakers in power transmission and distribution equipment that use hexafluoride* as the insulating gas to prevent arcing when the switch is turned off and to protect the equipment from malfunction. The Vaisala DPT145 uses direct standardized pressure measurements to immediately detect any leaks, while the online dew point detection function provides early warning of moisture problems. High humidity affects the insulating properties of the insulating gas and increases the probability of failure.
Vaisala's DPT145 micro water density transmitter is the only online instrument on the market that can monitor seven parameters simultaneously. The table directly measures the dew point, pressure, and temperature, and calculates parameters such as density, normalized pressure, atmospheric dew point, and micro-water PPM.
Since seven different parameters can be monitored simultaneously with one transmitter instrument, the piping system requires fewer mechanical connections and is less likely to leak. Because of lower investment, lower installation costs, and small on-site maintenance requirements, the meter will save money and reduce consumption.
What's more, the excellent long-term stability makes the instrument able to provide reliable, high-quality online measurements without having to verify and maintain it. In addition, since no on-site sampling is required, SF6 gas will not leak into the air, so this on-line monitoring scheme is very environmentally friendly.
In the coming weeks, DPT145 will make its debut at several specific exhibitions in Japan, Germany and China. The instrument will be officially launched in the third quarter of 2011.
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