
AMS-3946
Advanced Magnetic Sensing (AMS) high-precision non-contact proximity measuring system
- Advanced Magnetic Sensing (AMS, AMS-HP, AMS-XHP) precision non-contact measuring systems
- Detects target position through non-magnetic, conductive, and non-conductive barriers
- No magnet required — works with any ferromagnetic target
- Engineered for high-pressure environments from 500 psi to 40,000 psi
- RMS resolution down to 1 micron
- Standard measuring range up to 7 mm
- IP-67 rated with hermetic options available
- Threaded, flanged, AS4320 pressure-port compatible, and bolt-head configurations
- Multiple outputs: 0-10 VDC, 0-5 VDC, and 4-20 mA
- Semi-custom and custom OEM integration
Specifications
| Resolution | RMS down to 1 micron |
|---|---|
| Measuring range | Up to 7 mm (standard) |
| Pressure range | 500 psi to 40,000 psi (AMS / AMS-HP / AMS-XHP) |
| Ingress protection | IP-67; hermetic options available |
| Output options | 0-10 VDC, 0-5 VDC, 4-20 mA |
| Configurations | Threaded, flanged, AS4320 pressure port, bolt head |
Sensors
Downloads
Certifications
IP-67 rated with hermetic options. Declaration of Conformity available on request.
Options
Accessories
Mounting hardware, cables, and pressure-port adapters are available. Contact an applications engineer for configuration.
Frequently Asked Questions
How does AMS sensing differ from standard eddy current sensing?
Advanced Magnetic Sensing detects ferromagnetic targets through non-magnetic, conductive, and non-conductive barriers without a magnet — enabling leak-proof, penetrator-free installations in high-pressure environments.
What pressures can the AMS-3946 handle?
The AMS family operates from 500 psi to 40,000 psi depending on configuration (AMS, AMS-HP, AMS-XHP), and the sensors are IP-67 rated with hermetic options.
What are typical AMS-3946 applications?
Condition monitoring, crack and defect detection, shaft alignment and runout, gear-tooth condition monitoring, non-contact speed sensing, and surface-finish thickness inspection.

