See PM Series Encoders for Higher ppr and more Options

Low-cost digital feedback, up to 12 pulses/revolution.

The Pulser

The Pulser delivers a single digital pulse train to provide speed/position-control feedback from rotating devices such as motors or conveyor rollers. Operating on 4.5 to 15 Vdc, Pulser models produce from four to twelve well-defined square-wave pulses per revolution. These high-reliability components offer a useful way to measure incremental shaft position or to synchronize shafts in variable-speed machinery.
Pulser output is unaffected by speed, magnetic interference, ferrous dust, or minor mounting misalignment. Operating temperature range is -4 to +158°F (-20 to +70°C).
The Pulser's small size (1.5" long, 1.2" dia) makes it easy to use where space is limited.

Pulser Option
Please go to PTS series for more Tachometer/encoder options

Carrying the same basic specifications as the Pulser, the Pulser option is available on 1.135" dc tachometer generators and motors. This compact feedback device adds a single digital pulse train to the analog output of other Servo-Tek rotating products.
The option increases the length of any standard Servo-Tek component by only 1.25", helping to reduce the crowding often associated with combined-technology devices.

Electrical Specifications

Code incremental, single channel

Counts per revolution

4, 5, 6, 8,10,12

Supply voltage

4.5 V to 15 V (red lead + black lead -)

Supply current (typical)

20 mA OFF 36 mA ON, 27 mA av @ 12 Vdc

25 mA OFF,43 mA ON, 35 mA av @ 15 Vdc

Output voltage

Vhigh = Vs (2.2 k ohms pull-up)

Vlow, 0.4 @ Isink = 30 mA (5 Vdc)

Output switching time

rise and fall times = 15 µs with 200 pF load

Output type

NPN transistor with 2.2 k ohms pull-up resistor

(yellow lead), driven by LED/phototransistor

Maximum frequency

30,000 counts/second

Waveshape

50% +/- 5% square wave

+/- 0.25 mechanical degree maximum edge error

Environmental Specifications

Operating temperature

- 4 to + 158°F (-20 to +70#176;C)

Storage temperature

- 67 to +212#176;F (-55 to +100#176;C)

Mechanical Specifications

Moment of inertia

stand-alone: 11 x 10^-6 oz-in. -sec^2;

option: 1.00 x 10^-5 oz-in. -sec^2

(added to tach moment)

Weight

stand-alone: approx 3 oz; option: approx 0.5 oz

(added to tach weight)

Maximum rpm

18,000 rpm (or as limited by tach)

Housing

stand-alone: black anodized aluminum cover,

aluminum end bell;

option: black anodized aluminum

Pulser Dimensions (inches)

Face mounting (SA)

Flange Mounting (SB)

Please go to PTS series for more Tachometer/encoder options