T77530-10 - Magnetoelectric Speed Sensor - 10V DC IP67 Stainless Industrial Probe

1. Explosion-Proof Speed Monitoring Solution Overview​

The AI-Tek T77530-10 is an intrinsically safe speed sensor engineered for critical rotational monitoring in hazardous industrial environments. Featuring a ​magnetic sensing principle​ with ​10mm detection range, this device generates digital pulses proportional to gear teeth or notch passage with ​​±0.1% accuracy. Its ​stainless steel housing (316L)​​ achieves ​ATEX/IECEx Zone 0/1 certification​ and ​IP67 protection​ against dust, moisture, and temporary submersion. Operating across ​​-40°C to +100°C, the sensor outputs ​NPN/PNP open-collector signals​ or ​NAMUR-compliant waveforms​ for compatibility with safety systems. The mineral-insulated cable withstands ​150°C surface temperatures, while the hermetically sealed design prevents gas ingress in explosive atmospheres. Designed for oil/gas, mining, and chemical processing applications, it provides reliable speed feedback for turbines, compressors, and conveyors where combustible gases/dusts demand rigorous safety standards.

​2. Critical Technical Specifications​

This sensor delivers precise speed measurement with 10mm sensing distance (±0.5mm tolerance) and 0-10kHz frequency response. Electrical specifications include 8-30V DC operating voltage, NPN/PNP selectable outputs (100mA max), and NAMUR-compliant current loop (2-4mA). Environmental resilience features IP67 protection (IEC 60529), -40°C to +100°C temperature range, and 100g shock resistance (IEC 60068-2-27). Hazardous area certifications cover ATEX Ex ia IIC T4 Ga and IECEx equivalent for Zone 0/1. Mechanical construction includes M18×1.5 threaded stainless steel housing (SS316L), 2m PUR/mineral-insulated cable, and corrosion-resistant design per EN 1.4404 standards. Accuracy maintains ±0.1% of reading across full operational range.

​3. Hazardous Environment Applications​

This sensor serves critical speed monitoring roles in explosive atmospheres:

• ​Offshore Gas Compressors: Shaft speed monitoring in Zone 1 methane environments
• ​Mining Conveyors: Speed verification in combustible dust (Zone 21)
• ​Refinery Turbines: Overspeed protection per API 670 Annex H
• ​Chemical Reactors: Agitator speed control in Zone 0 H₂S areas
• ​Grain Elevators: Conveyor speed interlocks in ATEX Zone 22
• ​Marine Engine Rooms: Propulsion shaft RPM monitoring
• ​Petroleum Storage: Pump speed safety cutoffs
• ​Explosive Manufacturing: Mixer speed verification
  Its Ex ia certification ensures safe operation in continuously explosive atmospheres where standard sensors pose ignition risks, while IP67 rating maintains functionality in washdown areas and temporary submersion scenarios.

​4. Functional Advantages​

• ​Hazardous Area Safety:
  Intrinsic safety barriers limit energy to <0.03W
  Hermetic seals prevent explosive gas ingress
• ​Signal Reliability:
  NAMUR output enables broken wire detection
  ±1μs pulse timing accuracy
• ​Environmental Durability:
  Resists oils, solvents, and UV degradation
  500hr salt spray resistance (ISO 9227)
• ​Diagnostic Intelligence:
  Dual-color LED indicates power/signal status
  Short-circuit/overload protection
• ​Installation Flexibility:
  360° adjustable sensing head
  ±3mm lateral tolerance alignment
• ​Compliance Efficiency:
  SIL 2 capable per IEC 61508
  Pre-certified for IECEx/ATEX documentation

​5. Speed Sensing Operation​

​Magnetic Sensing Sequence:

1. ​Target Detection:
   • Gear tooth approaches within 10mm → magnetic flux change
2. ​Signal Generation:
   • Hall-effect sensor triggers Schmitt-trigger circuit
   • Pulse width: 50% duty cycle ±5%
3. ​Output Options:
   • ​NPN/PNP: Sinking/sourcing 24V DC (selectable via DIP switch)
   • ​NAMUR: Current swing 2-4mA (IEC 60947-5-6)
4. ​Fault Diagnostics:

   ​LED State​	​Condition​
   Green	Power on
   Flashing Green	Signal detected
   Red	Fault condition

​Safety Architecture:

• Galvanic isolation >1.5kV AC
• Output current limited to <100mA
• Automatic shutdown on short circuit

Packaging & Shipping

Company Information
Xiamen ZhiCheng Automation Technology Co., Ltdit is a leading global supplier of control system components. We specialize in control systems and drives.

With many years of experience in the industrial sector, we consistently deliver the highest quality of spare parts.which make sure that all this jobs are

perfectly.

we are major in PLC,Sensors,HIM,Transmitters.

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