AI-Tek 70082-1000-021 Passive Magnetic Speed Sensor – Variable Reluctance Series
When a critical rotating machine loses its speed feedback signal, the consequences cascade instantly: drives trip on loss-of-speed faults, overspeed protection systems go blind, and process lines shut down uncontrolled. In high-stakes environments — paper mills, steel rolling lines, turbine test stands, and heavy-duty conveyor systems — an unreliable or missing speed sensor is not a minor inconvenience; it is a production-stopping, safety-critical failure. The AI-Tek 70082-1000-021 passive magnetic speed sensor is engineered precisely to eliminate that vulnerability, delivering a robust, self-powered frequency signal directly from ferrous gear teeth or rotating targets without requiring any external excitation voltage.
The 70082-1000-021 sits within AI-Tek Instruments’ proven Variable Reluctance (VR) Speed Sensor series — one of the most widely deployed passive tachometer sensor families in global industrial automation. AI-Tek (formerly known as Airpax / Electro Corporation) has supplied variable reluctance sensors to OEMs and end-users across North America, Europe, and Asia for decades. This specific part number is specified by engineers who require a reliable, maintenance-free speed pickup that integrates directly with PLCs, DCS controllers, frequency-to-analog converters, and dedicated speed monitoring relays.
Technical Specifications
- Part Number: 70082-1000-021
- Manufacturer: AI-Tek Instruments
- Sensor Type: Passive Variable Reluctance (Magnetic Pickup)
- Output Signal: Sinusoidal AC voltage (self-generating, no power supply required)
- Output Frequency: Proportional to rotational speed and number of gear teeth
- Thread Size: Please confirm with datasheet or contact us for dimensional drawing
- Weight: Approx. 230 g
- Connector / Cable: Per OEM specification — contact Konmask for exact configuration
- Operating Principle: Electromagnetic induction from ferrous target (gear, sprocket, or toothed wheel)
- Typical Air Gap: 0.010″ – 0.050″ (0.25 mm – 1.27 mm) — verify with datasheet
- Temperature Range: Consult official AI-Tek datasheet for rated limits
Note: Konmask does not fabricate or alter specifications. All parameters above are based on publicly available AI-Tek product documentation. Contact us for the official datasheet.
Key Features & Benefits
- Self-Powered (Passive) Design: No external power supply needed — the sensor generates its own signal from the rotating ferrous target, simplifying wiring and eliminating a potential failure point.
- Robust Construction: Designed for harsh industrial environments with vibration, contamination, and wide temperature swings.
- Direct PLC/DCS Integration: Sinusoidal output is compatible with most speed input modules and frequency counters used in Siemens, Allen-Bradley, ABB, and Honeywell control systems.
- Maintenance-Free Operation: No moving parts, no wear components — install once and rely on it for years.
- Wide Application Range: Suitable for gear teeth counting, shaft RPM measurement, turbine speed monitoring, and conveyor speed control.
- OEM-Grade Reliability: AI-Tek sensors are specified by major OEMs in power generation, paper & pulp, metals, and material handling industries worldwide.
Industry & Equipment Applications
- Power Generation: Steam turbine and gas turbine speed monitoring, overspeed protection systems
- Paper & Pulp: Roll speed feedback on paper machines, winder drives
- Metals & Steel: Rolling mill speed control, coiler/uncoiler drive feedback
- Material Handling: Conveyor belt speed monitoring, bucket elevator speed switches
- Oil & Gas: Pump and compressor shaft speed measurement
- Marine & Propulsion: Propeller shaft RPM sensing, engine speed feedback
- Test & Measurement: Dynamometer speed pickup, engine test stand instrumentation
System Integration & Compatible Parts
The AI-Tek 70082-1000-021 is designed to work within a broader speed monitoring ecosystem. Compatible and complementary components include:
- AI-Tek Speed Switches & Monitors: T77xxx and T79xxx series speed switch/monitor modules that accept VR sensor inputs
- Frequency-to-Analog Converters: For converting the sensor’s frequency output to a 4–20 mA or 0–10 V signal compatible with PLC analog input cards
- PLC Speed Input Modules: Siemens FM350, Allen-Bradley 1756-HSC, or equivalent high-speed counter modules
- Signal Conditioners: Used when cable runs are long or signal amplitude needs amplification before reaching the controller
- Toothed Target Wheels: Standard 60-tooth or application-specific gear wheels for optimal signal generation
Contact Konmask if you need help selecting compatible signal conditioning or monitoring equipment for your application.
Our Quality Assurance Process
At Konmask.com, every AI-Tek component we supply goes through a structured sourcing and verification process:
- Authorized & Verified Supply Chain: We source from authorized distributors and verified OEM channels to ensure genuine parts.
- Part Number Verification: Each unit is cross-checked against the manufacturer’s part number database before shipment.
- Packaging Integrity Check: Original manufacturer packaging is inspected for tampering or damage prior to dispatch.
- Documentation Available: Certificate of conformance and datasheet available upon request.
- Export Compliance: All international shipments comply with applicable export regulations.
How to Order
- Submit an Inquiry: Use the contact form on this page or email support@konmask.com with your required quantity and delivery timeline.
- Receive a Quote: Our team will respond within 1 business day with pricing, lead time, and availability.
- Confirm & Pay: Approve the proforma invoice and complete payment via T/T, PayPal, or other agreed method.
- Shipment & Tracking: We ship via DHL, FedEx, or UPS with full tracking. Export documentation provided for international orders.
Why Choose Konmask.com?
- 🔧 Industrial Automation Specialists: We focus exclusively on industrial control components — PLCs, DCS, drives, sensors, and instrumentation.
- 🌍 Global B2B Export Experience: Serving engineers and procurement teams in 50+ countries with reliable cross-border logistics.
- 📦 Hard-to-Find Parts: We stock and source obsolete, discontinued, and long-lead-time components that standard distributors cannot supply.
- ⚡ Fast Response: Dedicated technical sales team responds to all inquiries within 24 hours.
- 📄 Full Documentation: Datasheets, certificates of conformance, and test reports available on request.
Frequently Asked Questions
Q: Does the AI-Tek 70082-1000-021 require an external power supply?
A: No. This is a passive variable reluctance sensor. It generates its own sinusoidal AC output signal through electromagnetic induction as the ferrous target rotates past the sensor tip. No external excitation voltage is required.
Q: What type of target does this sensor work with?
A: The 70082-1000-021 is designed to work with ferrous (iron or steel) toothed targets such as gear wheels, sprockets, or ring gears. Non-ferrous targets (aluminum, brass, plastic) will not generate a usable signal.
Q: Can I connect this sensor directly to a PLC input?
A: Yes, in most cases. Many PLCs with high-speed counter or frequency input modules (e.g., Siemens FM350, AB 1756-HSC) accept VR sensor signals directly. For long cable runs or low-speed applications where signal amplitude may be insufficient, a signal conditioner or preamplifier is recommended.
Q: What is the recommended air gap between the sensor and the gear tooth?
A: Typical air gap for AI-Tek VR sensors is 0.010″ to 0.050″ (approximately 0.25 mm to 1.27 mm). Refer to the official AI-Tek datasheet for the exact specification for this part number, or contact Konmask for the datasheet.
Q: Is this part in stock? What is the lead time?
A: Stock availability varies. Please submit an inquiry via support@konmask.com or the contact form for real-time availability and lead time. We typically respond within 1 business day.
Q: Do you provide a warranty or certificate of conformance?
A: Yes. We provide a certificate of conformance upon request. Warranty terms are aligned with the manufacturer’s standard policy. Contact us for details.
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Original Source: https://Konmask.com
Contact: support@konmask.com | +0086 19859288691
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