Level Measurement Testing GWR Systems Automatically

The Unique Verification Reflector function in Rosemount 5300 Series GWR enables device integrity testing without manually raising product level – saving time, enhancing safety and reducing the risk of spills.

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Emerson Automation Solutions

Emerson introduces the world’s first on-line Guided Wave Radar (GWR) transmitter and probe testing function. The Verification Reflector function, now available with the Rosemount 5300 Series GWR transmitters, is designed for applications requiring periodical transmitter integrity tests. The 5300 with Verification Reflector enables automated tests without stopping the process or manually raising the product level in the vessel. This helps to reduce the risk of accidental spills and enables either device verification or proof-testing to be completed much faster.

In the past, most guided wave radar transmitters have required the fluid level in the vessel to be raised to the alarm point. The fluid has to be moved in and out of the tank under test - increasing the risk of spills and taking time of up to half a day. The process needs to be supervised by operators to monitor the tank level - increasing health and safety risks due to the possibility of exposure to the tank contents.

The Verification Reflector function eliminates the need for this procedure by using an adjustable reference reflector fitted to the probe of the guided wave radar. During commissioning, the location and amplitude characteristics of the reflector are stored in the transmitter. When the test procedure is later initiated, the stored reflector data is compared to the current measurement to verify the integrity of the measurement electronics and upper part of the probe.

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