Emerson PR9376/010-001 Hall Effect Speed / Proximity Sensor
A non-contact Hall-effect sensor for speed or proximity measurement on critical rotating machinery.
Overview
Emerson PR9376/010-001 is a PR9376 Hall-effect speed/proximity sensor. The ordering code identifies an armored cable, 3 m cable length and open cable end.
The sensor operates from 10 to 30 VDC and produces one AC cycle for each revolution or detected gear tooth. Target geometry and material are controlled because the sensing target must be magnetic soft iron or non-stainless steel.
Engineering Data
Functions
Fast Hall-effect switching supports speed and key measurements up to the documented trigger frequency.
Armored cable protects the 3 m lead in mechanically demanding routing.
The open cable end supports project-specific termination while keeping the conductor identification controlled.
The target must be suitable magnetic iron or steel with the documented gear geometry.
Applications
- Speed sensing on steam, gas and hydro turbines.
- Gear-tooth pulse pickup on compressors, pumps and fans.
- Phase or key measurement where the documented trigger geometry is available.
- Replacement of an installed armored 3 m PR9376 execution.
Lifecycle & Service
- Record target module, air gap, supply, load, cable route and conductor termination before removal.
- Maintain the orientation mark and the specified relationship to the gear teeth.
- Protect the open conductors and armor termination from moisture and short circuits.
- Verify high and low output levels and stable pulse counting across the operating-speed range.
FAQ
What makes PR9376/010-001 different from PR9376/000-001?
The 010 execution includes armored cable, while 000 is the non-armored version; both retain a 3 m open-ended cable arrangement.
Can PR9376/010-001 sense a stainless-steel target?
The specified target is magnetic soft iron or non-stainless steel, so target material must be verified before substitution.
What determines the permitted air gap?
The gear-tooth module controls it: the documented value is 1 mm for module 1 and 1.5 mm for module 2 or larger.
What wiring evidence should accompany an open-ended PR9376 sensor?
Provide the conductor identification, shield and armor treatment, supply voltage, input load, terminal numbers and measured high/low levels.
How should a speed channel be proven after replacement?
Check mechanical clearance, pulse amplitude, polarity, frequency against an independent speed reference and the complete alarm or trip chain.
