Overview
The Electro-Sensors 775-110100 (model 1101) is a non-contact hall-effect speed sensor designed for continuous monitoring of rotating machinery in industrial and hazard-detection applications. The sensor features a non-threaded stainless steel body, includes a mounting bracket and 10 ft of 3-conductor shielded cable for straightforward field installation. This unit provides digital square-wave pulse output compatible with speed switches, counters, and control systems.
Key Features
- Non-contact hall-effect detection — no physical wear on rotating shafts
- Digital pulse output — square wave signal with 50/50 duty cycle when used with pulse generators that have evenly spaced magnets
- Stainless steel housing — corrosion-resistant construction suitable for washdown and moisture-heavy environments
- 3-conductor shielded cable — 10 ft length with integral shielding to minimize electrical noise
- Flexible mounting — includes bracket; recommended 1/4 inch +/- 1/8 inch gap provides tolerance for vibration, shaft run-out, misalignment, and industrial environments
- Pulser disc compatible — commonly used with pulser discs or 60 pulse/rev magnet wheels
Technical Specifications
- Model: 1101
- Part Number: 775-110100
- Housing Material: Stainless steel (non-threaded)
- Detection Type: Hall-effect (non-contact)
- Output Type: Digital pulse (square-wave)
- Cable Length: 10 feet
- Cable Type: 3-conductor shielded
- Recommended Gap: 0.25 inch ±0.125 inch
- Recommended Application: Shaft speed monitoring, pulser disc systems, magnet wheel applications
- Manufacturer: Electro-Sensors, Inc.
Typical Applications
- Rotating equipment speed monitoring and hazard detection
- Shaft speed indication and control feedback
- Conveyor and drive shaft supervision
- Fan, blower, and pump speed monitoring
- Emergency shutdown and slow-speed detection systems
- Process speed verification and alarm triggering
Compatibility & Replacements
Compatible With
- Electro-Sensors speed switches and monitoring systems
- Pulser discs and magnet wheel systems with alternating polarity
- Industrial controllers and PLC speed input modules
- Digital counters and frequency-measurement instrumentation
- Standard 24 VDC control and monitoring circuits
Replaces / Drop-In Replacement For
- Other Electro-Sensors 1101-series hall-effect sensors
- Verify compatibility with your existing speed switch or monitoring equipment before ordering
Works With
- Electro-Sensors Model 255 Pulser Disc systems
- Speed switch and signal-conditioner equipment accepting pulse frequency inputs
- Standard industrial PLC analog and discrete input modules
- Digital tachometer and rate-meter instruments
