Level Tec Process Control

Pulser Discs are a necessary part of a speed monitoring system.  Discs provide magnetic sensor shaft targets and are compatible with Electro-Sensors' shaft speed sensors. The large gap allows maximum flexibility in mounting the sensor, making them ideal for environments where there is vibration, dirt, dust, grease, or water. The  number of pulses per revolution generated by the Pulser Disc and sensor depends on the sensor used. Simply center-drill and tap the end of the shaft to be monitored and secure the Pulser Disc onto the shaft.

Generally, a Hall Effect sensor will produce one pulse for every two magnets, since the sensor  switches between high and low in the presence of both a north and a south pole magnet. A Magnetoresistive sensor will generate one square wave pulse per magnet. Special discs can be custom manufactured to meet specific needs. Steel targets can be substituted for magnets on aluminum or PVC discs. These targets work well with proximity or magnetic pick-up sensors.

The #380 Encoder is a standard industrial grade encoder available with single channel or quadrature output. The #470 Encoder has a size 25 heavy-duty industrial housing with rugged sealed ball bearings and an anti-backlash flexible shaft coupling to isolate the internal high precision encoder from both axial and radial shaft loading. The #470 Encoder supplies a quadrature output with an index pulse, and optional line driver output.

Rotary Shaft Encoders are ideal for use on any rotating shaft to provide a digital output signal to tachometers, counters, speed switches, motor controls, or anything requiring a pulse input. Flexible shaft couplings are available as an option to compensate for shaft misalignment, and are recommended for most applications.

Rotary Shaft Encoders convert shaft rotation into square wave output pulses. They provide an accurate means of transmitting actual speed information for detecting rate, position, or direction of rotation. The shaft encoder produces an output signal by rotating a disc with clear and opaque segments between a light emitting diode and a photo-transistor sensor. The output signal from the encoder is then converted into a square wave signal by an internal squaring circuit. The number of output pulses per shaft revolution is determined by the number of clear and opaque segments on the disc. Quadrature (bi-directional) models have a second LED and sensor positioned 90-degrees apart to produce two square wave signals.

The #380 Encoder is a standard industrial grade encoder available with single channel or quadrature output. The #470 Encoder has a size 25 heavy-duty industrial housing with rugged sealed ball bearings and an anti-backlash flexible shaft coupling to isolate the internal high precision encoder from both axial and radial shaft loading. The #470 Encoder supplies a quadrature output with an index pulse, and optional line driver output.

Rotary Shaft Encoders are ideal for use on any rotating shaft to provide a digital output signal to tachometers, counters, speed switches, motor controls, or anything requiring a pulse input. Flexible shaft couplings are available as an option to compensate for shaft misalignment, and are recommended for most applications.

Rotary Shaft Encoders convert shaft rotation into square wave output pulses. They provide an accurate means of transmitting actual speed information for detecting rate, position, or direction of rotation. The shaft encoder produces an output signal by rotating a disc with clear and opaque segments between a light emitting diode and a photo-transistor sensor. The output signal from the encoder is then converted into a square wave signal by an internal squaring circuit. The number of output pulses per shaft revolution is determined by the number of clear and opaque segments on the disc. Quadrature (bi-directional) models have a second LED and sensor positioned 90-degrees apart to produce two square wave signals.

  • Ideal for use on slow speed applications
  • Multiple mounting configurations for easy installation
  • Wide variety of pulse per revolution counts
  • Traction wheel assembly available

The 199SM (Shaft Mount) and 198EM (End Mount) Magnet Wheels comprise a ferro-magnetic nylon ring with 120 alternating magnetic poles and an aluminum hub (available without aluminum hub). The wheel is 3.75" in diameter with the magnetic surface on the outside circumference of the wheel. The magnets are rectangular and evenly spaced between non magnetized spaces. The wheel is typically mounted on a shaft up to 3" in diameter.

Our shaft mount wheels are custom-bored to slide snugly onto the shaft, and are then secured with two set screws. Many standard hub sizes are in stock, including common NEMA C Frame Motor sizes. These magnetic wheels are compatible with Electro-Sensors' Hall Effect and Magnetoresistive sensors.


•  Use with 1101/1201/1202 Hall Effect and 1102 Magnetoresistive shaft speed sensors
•  60 pole pairs (Hall Effect)
• 120 alternating magnets (Magnetoresistive)
•  Non-contact sensing
•  End-of-shaft (198EM) or over-shaft (199SM models) mounting
•  NEMA C Ring Kit compatible
•  10,000 rpm maximum speed

Digital Ring Kits include a mounting ring, hardware, a magnet wheel, and a sensor. They provide digital feedback from motors with NEMA C face end bells, can generate pulses down to zero speed, and transmit without amplification up to 1,500 feet. This is an ideal pulse generator for speed monitoring, motor control, counting, process control, cut-to-length, and ratio/draw controlling applications.

DRK
The DRK Series Ring Kits can be quickly and easily installed on NEMA C face motors or between a motor and gear box. Each kit features a non-contacting digital pulse generator system.

QDRK
The QDRK Quadrature Ring Kit provides a 60-pulse per revolution quadrature signal, for use with electronic control equipment requiring rotational-direction information. Two signals, 90° out-of-phase, are produced by the sensor. When the leading edge of signal A precedes the leading edge of signal B, shaft rotation is forward. When the opposite is true, the monitored shaft is rotating in reverse.

  • High speed digital pulse train
  • Easy to retrofit
  • Impervious to dust, oil, and water
  • 60 or 120 pulses per revolution
  • NPN open collector output
  • Line driver option available 6-24 VDC