Extreme protection

‘Enviroseal’ cold end seals from Watlow are designed to block oil and other contaminants from infiltrating RTD sensors.

Enviroseal cold end seals from Watlow are designed to block oil and other contaminants from infiltrating RTD sensors.

The company says that new seals are ideally suited for applications requiring greater protection than that provided by standard cold end epoxy splashguards.

Enviroseal RTD sensors employ a cold end seal that houses a rubber gland. The seal offers a temperature rating of -50 to 204 degrees C (-58 to 400 degrees F) and also exceeded moisture resistance testing in a humidity chamber per ASTM E644 paragraph 15 standards.

Additionally, the RTDs feature a unique design that increases wire pull out resistance by 70% (15 lbf minimum) over existing epoxy designs.

The RTD’s cold end seal provides extreme protection from salt water, motor oil and chemicals such as bleach, ammonia and boric and nitrous acid.

Combined with the sensor’s wide temperature rating, it can be used in a variety of applications, including refrigeration or condensation units, food processing, industrial ovens, medical research, packaging equipment and environmental control systems.

The new sensors also feature a vibration resistant design, meet IEC60751, BS 1904 and EN60751 standards and are available with a variety of fitting and termination options.

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