Underwater Limit Switches for Test Tanks & Platforms
Position sensing for immersed fixtures, clamps and moving platforms in test tanks, wave basins and industrial immersion equipment.
Test facilities often need reliable position indications from equipment operating inside a basin or immersion tank. A switch can identify a fixture at home, a clamp at a defined position or a platform at its travel limit.
Unlike a fixed offshore installation, a test rig may be reconfigured frequently. Accessible connections, clear wiring identification and a repeatable mounting arrangement can make the sensing assembly easier to incorporate into changing experiments.
Choose the feedback your equipment needs.
For test tanks & immersion systems, start with the task below. These routes narrow the product search; the final configuration is reviewed against your installation and operating conditions.
Confirm a defined position
Review non-contact proximity switching for an open, closed, home or engaged indication.
Resolve together: Target geometry, sensing gap, mounting and required contact state.
Compare proximity switches ↗Detect physical actuation
Where a cam or moving feature can press a plunger, review a mechanical limit switch as another sensing method.
Resolve together: Operating force, travel, overtravel and a separate mechanical stop.
Explore mechanical limit switches ↗Connect the sensing point
Define the lead between the sensor and equipment interface, including any movement and maintenance access.
Resolve together: Mating parts, pin allocation, cable length, routing and end termination.
Explore cable assemblies ↗Where each component fits.
Detect the defined mechanical position.
Define the target approach and the repeatability needed for the test. Include any surrounding metalwork that could affect detection.
- Immersed fixtures
- Moving platforms
- Basin mechanisms
Make the service interface practical.
Place serviceable connections where technicians can reconfigure the rig without disturbing the sensor setting. Identify wet and dry mating conditions.
- Exact mating reference and pin allocation
- Connection and disconnection conditions
- Access for inspection and replacement
Protect the route back to control.
Account for repeated movement and handling between tests. Cable length should allow the intended route without loose loops near moving fixtures.
- Installed route and required length
- Fixed or moving duty
- Materials, restraints and termination details
An immersion platform with repeatable end points
Targets on a guided platform can pass fixed switches at defined positions. The cable route should allow the full movement without catching on fixtures. If accurate displacement throughout travel is required, specify a separate measurement device.
Contact us ↗From the equipment to the input.
A typical functional path. The final arrangement depends on the equipment and project specification.
- 01
Moving equipment
Detect a defined clamp or fixture position.
- 02
Target & switch
The target reaches the defined detection point.
- 03
Cable assembly
A specified connection carries the switch state.
- 04
Control input
The equipment controller interprets the agreed contact logic.
The details to resolve together.
Describe the test fluid
Water, additives and industrial immersion fluids can require different material choices.
Separate test limits from measurement
A switched position is not a continuous displacement or speed measurement.
Document each configuration
Record target location, wiring and operating conditions when the rig is reconfigured.
Bring the installation into the brief.
Share what you have. A drawing, an existing part reference or a description of the operating requirement is a useful starting point.
Contact us ↗- Equipment drawing and required switching positions
- Maximum immersion pressure, duration, temperature and media
- Target geometry, mounting space and electrical input
- Cable route, mating connector and maintenance method
Application examples describe potential arrangements, not installed DepthLink case studies. Final suitability, ratings and test requirements are agreed for the selected assembly.
What needs to be confirmed?
Immersed fixtures
Detect a defined clamp or fixture position.
Moving platforms
Indicate a home or end-of-travel point on a guided assembly.
Basin mechanisms
Provide discrete feedback from retractable equipment or a test article’s moving parts.
Before you specify.
Can these switches measure displacement in a wave basin?
A discrete switch detects a defined target position. Continuous displacement requires a suitable measurement sensor.
What should be specified for a frequently reconfigured rig?
Include the mounting adjustment, connector access, cable handling, identification and any required verification after each change.
See the complete connection.
Explore how DepthLink position switches, underwater cable assemblies and custom equipment interfaces work together. Contact our team to discuss your installation.
Explore system engineering ↗
