Contrex, Inc. Precision Motion Controls

QUADRATURE ENCODER

For positioning or bi-directional applications, the advanced Quadrature Sensor II gives you both motor shaft speed and direction.  The Quadrature Sensor II provides two pulse-trains which are 90 degrees out of phase from each other.  This phase difference provides direction information to a CONTREX controller.  The Quadrature Sensor II technology is more rugged, reliable, and easier to mount than typical optical encoders.

• Sense speed and direction of ferrous geartooth targets (see Ring Kits)

• Wide operating temperature rating -40 to +125 degree Celsius

• Zero speed to 10,000 RPM shaft speed capability (100 kHz max frequency)

• Automatic gain adjustment to handle variable gaps when installed without Ring Kit

 Open Collector Quadrature Sensor Install Guide (205KB PDF)

 Differential Quadrature Sensor Install Guide (142KB PDF)

2X HALL EFFECT

For near zero speed applications, the 2X Hall Effect Sensor improves your ability to sense motor shaft speed at very low speeds.  Unlike a magnetic pickup, the 2X Hall Effect Sensor is capable of sensing true zero speed while being tolerant of wider gaps.  Additionally, the 2X Hall Effect Sensor improves the sensing resolution by 2 times, thus producing a 120 pulse-per-revolution signal when sensing a 60 tooth gear.  This additional resolution improves motor speed control a low speeds.  

• Sense speed of ferrous geartooth targets (see Ring Kits)

• 2 times the resolution of the geartooth target for better low speed control

• Zero speed to 10,000 RPM shaft speed capability (100 kHz max frequency)

• Automatic gain adjustment to handle variable gaps when installed without Ring Kit

MAGNETIC PICKUP

CONTREX Magnetic Pickup sensors offer cost effective, proven reliability for many motor speed control applications.  With no integrated circuitry, these variable-reluctance sensor can withstand very high temperature environments.  They are available in multiple housing types depending on your application needs.

• Sense speed of ferrous geartooth targets (see Ring Kits)

• Cost effective, proven reliability

• Smooth, threaded, or explosion proof housings

DISCONTINUED SENSORS

These sensors have been discontinued and are no longer manufactured. 

Limited inventory and replacement models do exist for most models. 

We recommend calling our factory at 763.424.7800 to obtain a current model replacement or enquire about limited stock.