Emerson PR9376 Sensor | Turbomachinery Speed Monitoring Device

Product Description

Overview

The EPRO PR9376 is a Hall-effect based speed and proximity sensor from Emerson’s AMS / EPRO sensor family, designed for non-contact detection of rotational speed, position, and slip in industrial machinery. It detects ferromagnetic targets such as gear teeth or spur wheels without physical contact, ensuring wear-free operation and reliable performance.

Its rugged stainless steel housing and IP67 sealing make it suitable for harsh industrial environments, while its fast response electronics (<1 μs rise/fall time) support both high-speed and very low-speed measurements. The PR9376 integrates seamlessly with Emerson monitoring platforms such as AMS 6500 and VM600, providing precise input for condition monitoring and machinery protection systems.

Technical Specifications

• Product Type: Hall-effect Speed / Proximity Sensor

• Model Number: PR9376/000-001

• Manufacturer: Emerson / EPRO

• Measurement Principle: Non-contact Hall effect

• Output Signal: 1 AC cycle per revolution or per gear tooth

• Rise/Fall Time: <1 μs

• Output Voltage (12 VDC, 100 kΩ load): High >10 V / Low <1 V

• Air Gap: 1 mm (Module 1), 1.5 mm (Module ≥2)

• Maximum Operating Frequency: 12 kHz (720,000 cycles per minute)

• Target Material: Magnetic soft iron or steel (ST37), not stainless steel

• Trigger Mark Compatibility: Spur wheel, involute gearing (Module ≥1)

• Power Supply: 10–30 VDC, max. 25 mA

• Operating Temperature Range: –25 °C to +100 °C

• Storage Temperature Range: –40 °C to +100 °C

• Sealing Rating: IP67 (dust-tight, water-resistant)

• Cable Options: Integral PTFE cable or connector variants

• Housing: Stainless steel

• Weight: 210 g (7.4 oz)

• Applications: Speed measurement, slip detection, standstill monitoring, rotational direction detection

• Compliance: Suitable for API 670 machinery protection systems

FAQ

Q1: Can PR9376 detect very low-speed rotations accurately?
A1: Yes, the sensor is designed for both high-speed and very low-speed measurements.

Q2: What type of targets does it detect?
A2: It detects ferromagnetic materials such as gear teeth and spur wheels, not stainless steel.

Q3: What is the maximum frequency the sensor can handle?
A3: It supports up to 12 kHz, equivalent to approximately 720,000 cycles per minute.

Q4: Is this sensor suitable for harsh industrial environments?
A4: Yes, it has a rugged stainless steel housing and IP67 sealing for dust and water protection.

Q5: Which platforms can it integrate with?
A5: The PR9376 works with Emerson AMS 6500, VM600, and standard industrial PLCs.