Waterproof strain gauges

Waterproof strain gauges for measurements in wet environments

Waterproof strain gauges are designed to measure mechanical strain in applications where moisture or water exposure could affect conventional strain gauge installations. Their protective construction helps limit moisture ingress, supporting reliable measurements when used within their specified operating conditions.

The WF Series features factory-attached vinyl lead wires and integrated waterproof protection, reducing the need for additional waterproof coating during installation.

When should you use waterproof strain gauges?

Waterproof strain gauges can be considered for measurement applications involving moisture exposure, wet surfaces or water contact, provided the selected model is suitable for the environmental conditions.

Potential applications include:

• Structural testing in damp or wet environments.
• Mechanical testing where the measurement point may be exposed to water.
• Research and development applications requiring moisture-protected strain measurement.
• Test setups where applying a separate waterproof coating would be difficult or time-consuming.

What should you consider when selecting a waterproof strain gauge?

The appropriate strain gauge depends on more than its resistance to moisture. Important selection criteria include:

• Water exposure: Occasional splashing, continuous wet conditions and full immersion place different demands on the protective construction.
• Operating temperature: Confirm that the selected strain gauge and its protective materials are suitable for the expected temperature range.
• Test material and geometry: Select a gauge length and configuration appropriate for the component and measurement location.
• Installation requirements: Ensure that the bonding method, lead-wire routing and electrical connections are suitable for the application.
• Measurement duration: Consider whether the measurement involves short-term testing or extended exposure to moisture.

For applications involving prolonged immersion, pressure, chemicals or other demanding environmental conditions, the complete installation should be assessed against the relevant product specifications.