Seatools Proxis subsea proximity sensor alternatives
Explore a DepthLink solution for submerged position monitoring, from discrete open/closed detection to a separately specified linear position transmitter. Share your existing Seatools Proxis reference and the signal your control system expects.
Separate a switching point from a measurement signal.
The Proxis family covers different output and sensing arrangements, including switching, PNP/NPN and proportional-output models. A dry-contact switch cannot be treated as a direct replacement for a powered or analogue sensor.
Output and control input
Identify dry contacts, PNP/NPN or an analogue signal, including supply voltage and the control input. A change of output may require control-system changes.
Target, range and mounting
Provide the target material, required gap, flush or non-flush mounting and surrounding metalwork. Do not infer sensing distance from a similar sensor diameter.
Equipment duty
For hatches, gates or dredging equipment, include immersion conditions, mechanical movement, vibration and cable routing. State whether you need a discrete position or continuous displacement.
Compare the installed requirement with the proposed solution.
Use these six checks to identify what can stay and what needs changing. These are selection routes, not verified part-for-part equivalents.
| Selection point | Record from the installed equipment | DepthLink route and practical difference |
|---|---|---|
| Sensing action | Target material, approach direction, operating gap and release point. | Nano M12 uses a target magnet; approximately 12 mm with the optional MT-01. A plain metal target is not equivalent. |
| Mounting envelope | Thread and pitch, mounting drawing, sensing-face location and space for mating and removing the cable. | Select the body and connector together. A similar thread diameter does not establish identical fit or sensing position. |
| Electrical output | Dry contact, PNP/NPN or proportional output; supply and the controller input. | Nano is a dry-contact switching route. Continuous actuator stroke feedback uses a separate linear-position arrangement, not a direct proximity-distance substitute. |
| Connector and wiring | Exact mating-half reference, keying, contact arrangement, pin functions, sealing and cable termination. | Nano, Micro Straight, Micro 90° and Circular describe distinct interfaces. Review the actual mating pair and pinout; matching pin count alone is insufficient. |
| Wetted materials | Body, connector shell, mounting, target carrier, cable jacket and seal requirements. | Review the complete wetted assembly against seawater exposure and neighbouring materials. A connector material does not describe the whole switch body. |
| Pressure and immersion | Operating pressure/depth, temperature, continuous immersion and any required test evidence. | Nano M12 stainless-steel configuration: 700 bar external pressure, approximately 7,000 m seawater. Agree the complete switch, mating connector and cable duty. |
Magnetic target + discrete position
Explore Nano M12 for compact, magnet-operated open/closed or presence feedback.
Explore Nano M12 ↗Continuous actuator stroke
Review an external linear-position arrangement when the task is to measure travel along a cylinder.
Explore linear position ↗Still choosing the sensing action?
Compare physical actuation and non-contact magnetic-target sensing before selecting the mounting and cable.
Read the selection guide ↗Model numbers & configuration references
Looking for an alternative to one of these references? Send the full part number and drawing to DepthLink with your enquiry. We will assess the sensing action, mounting, electrical output and subsea connection together.
| Reference | Reference type | What to identify | Next step |
|---|---|---|---|
| Proxis 22 | Model family | NO, NC, or combined NO and NC; circular connector or cable gland. | Assess this reference ↗ |
| Proxis 32 | Model family | NO or NC; circular connector or cable gland. Immersion capability differs by termination. | Assess this reference ↗ |
| Proxis 47 | Model family | NO or NC; circular connector or cable gland. | Assess this reference ↗ |
| Proxis Mini | Model family | PNP-NO or NPN-NO; Micro connector, with custom cabling available. | Assess this reference ↗ |
| Proxis AO 25 | Model family | 4–20 mA or 0–10 V proportional output; circular connector. Also written Proxis AO25. | Assess this reference ↗ |
Model families, connector suffixes and accessories are identified separately from complete switch part numbers. Custom configurations are not exhaustively listed. Inclusion does not imply a drop-in replacement or transfer any competitor rating to a DepthLink product.
A DepthLink solution around your equipment.
Nano M12 proximity switch
Compact magnet-operated switching with an optional MT-01 target.
View product ↗Subsea cable assemblies
Define connector format, pin allocation, cable length and equipment termination.
Explore cabling ↗Configured materials & interfaces
Review stainless steel, titanium and other specified alloys for the actual assembly.
Material options ↗Relevant underwater applications
Before choosing an alternative
Is a Nano M12 an alternative to every Proxis sensor?
No. Its magnetic target and dry-contact output suit a defined switching task. Powered PNP/NPN or proportional measurement applications need a separate sensor and control-interface review.
What if I need continuous cylinder position?
DepthLink offers a linear position transmitter product route for cylinder and actuator stroke monitoring. It is a separate measurement arrangement, not a drop-in replacement for a proximity distance sensor.
DepthLink is an independent supplier. Seatools / Proxis names identify the existing equipment or requirement; no affiliation, endorsement or automatic interchangeability is implied.
Send us the reference. Tell us what must stay.
Include the part number, drawing or datasheet, required quantity and delivery date. Tell us which mounting, target, connector and control-system interfaces need to remain unchanged.