DESCRIPTION
The Hall Effect speed sensor (HESS) is ideal for sensing steel gears or other
ferrous targets from 0 to 10 KHz. This sensor does not have a minimum
threshold speed as does a magnetic pickup sensor. However, when the sensor is
first powered up, the output state is indeterminate (Hi or Lo) when the sensor is
not detecting metal. The unit operates from a +8 to +30 VDC power supply and
is reverse polarity protected. The sensor face can be mounted flush into metal
panels. The case is stainless steel and is supplied with 10 feet (3 M) of cable.
The stranded shield wire is not connected to the sensor circuit or case.

SPECIFICATIONS
1. POWER SUPPLY: +8 to +30 VDC @ 30 mA max.; reverse polarity
protected.
2. MAXIMUM SENSING DISTANCE: 0.040" (1 mm).
3. OUTPUT: NPN O.C. transistor; VMAX = 30 VDC; VSAT = 1 VMAX @ 30
mA max. load.
4. OPERATING TEMPERATURE RANGE: -25°C to 70°C
(-14°F to 158°F).
5. CABLE LENGTH: 10 feet (3.05 M).
6. OPERATING FREQUENCY: 0 to 10 KHz.
7. WIRE: 3 wire, 22 AWG with stranded shield wire and 100% foil coverage;
grey PVC jacket.
Color Code: Red (+VDC), Black (Comm.), White (Output).
8. CABLE STRAIN RELIEF: 10 lbs. (4.5 Kg.) for 1 minute.
Note: DO NOT adjust sensor air gap while target (gear) is moving