Plunger Arrival Sensor

Cyclops sensor

Brochure Cyclops + Velocity Case Study

Cyclops is not your average plunger arrival sensor. Utilizing modern Geomagnetic Sensing Technology™, market-leading Cyclops is the most advanced and reliable sensor available.
ETC Cyclops Hawkeye Plunger Sensor
Within the rugged enclosure lies a geomagnetic “eye” and a tiny yet powerful microprocessor. When powered, Cyclops is actively watching for a change in the earth’s magnetic field around it to signal plunger arrival. Constantly filtering out “background noise” from nearby equipment or environmental changes, Cyclops is able to consistently detect any type of plunger as it arrives at surface. ETC’s innovative line of plunger sensors provide advantages that no other plunger sensors offer, such as the ability to adjust sensitivity, upgrade software, or troubleshoot problematic wells right at the well head. Documentation and Software


  • Digitally Controlled Output
  • Intrinsically Safe or Explosion Proof
  • Wireless Solution Available
  • -40°F to +160°F Operation
  • 5 V to 24 V Operating Voltage
  • Low Power
  • Adjustable Sensitivity
  • Self Calibrating
  • 1/2” NPT Port



Supply Voltage 5 V – 24 V DC
Current Draw Typ. – 0.77 mA, Max. – 0.80 mA
Switch Interface Dry contact, normally open, 100 Ω impedance
Communications Interface 1 wire RS-485 test interface
Operating Temperature -40°C to +70°C (-40°F to +160°F)
Certification (IS Model) Class I, Zone 0, AEx ia IIB T4

Class I, Division 1, Groups C, D T4; Ex ia IIB T4

Class I, Zone 2, Group IIC T4

Class I, Division 2, Groups A, B, C, D T4

Certification (ATX Model) CE Ex II 3G Ex nA IIC T4 Gc
Certification (ExP Model) Class I, Zone 1, AEx d IIB T4

Class I, Division 1, Groups C, D; Ex d IIB T4


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Case Studies

Major producer in South Texas uses ALiEn2 to achieve 16,000% ROI

The ALiEn2 plunger controller replaced a competitive controller on a plunger lift well that was not meeting production expectations. Production was doubled within 12 days and the well has continued producing at the higher rate since.

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Cyclops proves 100% accuracy, becomes standard for major producer in the San Juan Basin

The Cyclops sensor was installed on wells that were frequently missing plunger arrivals, leading to 100% reliable detection of the plunger.

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