AI-Tek Instruments
FLW is the largest stocking distributor of AI-TEK Instruments (formerly Airpax Instruments) and provides a complete line of tachometers, speed indicators, variable reluctance speed sensors, magneto-resistive and hall effect sensors to measure rotary speed.

Hall Effect Speed Sensors
DH & RH Series

aitek instrument hall effect speed sensors

AI-Tek has taken its years of experience of designing and manufacturing Hall Effect sensors for engine timing applications and has developed a line of durable products for industrial use.

With multiple standard variations we offer the widest range of standard catalog sensors to meet your various design needs. The design is flexible to easily meet all of your application requirements.

The Hall Effect sensor can sense each change in target movement, regardless of speed, from near zero to 15 kHz frequency range, generating a steady pulse train of frequency proportional to target speed. Typically, each time a gear tooth (or any ferrous discontinuity) passes in front of the sensor the output changes state. This type of sensor is known as a "P" type because it uses N-P-N transistor logic (as opposed to "N" type, which uses P-N-P transistor logic).

Key features to note are:

  • Reverse voltage protection, to prevent damage if mis-wired
  • Extended temperature range
  • Wide range of supply voltage
  • Two output options of Supply Tracking or TTL Compatible
  • Rugged design meeting IEC 77 Standards (European Railroad Applications)

Part Number Thread Size (in) Supply Tracking
or TTL
Termination Thread Length (in) Sensor Length (in)
DH1512-1055/8-18TTLConnector1.53.375
DH1512-1065/8-18TTLConnector2.754.625
DH1512-1075/8-18TTLConnector46.512
DH1512-1095/8-18TTLCable1.53.375
DH1512-1105/8-18TTLCable2.754.625
DH1512-1135/8-18TTLCable1.53.375
DH1512-1145/8-18TTLCable2.754.625
DH1512-2105/8-18ST*Cable2.752.75
DH1522-1055/8-18STConnector1.53.375
DH1522-1065/8-18STConnector2.754.625
DH1522-1075/8-18STConnector46.512
DH1522-1095/8-18STCable1.53.375
DH1522-1105/8-18STCable2.754.625
DH1522-1135/8-18STCable1.53.375
DH1522-1145/8-18STCable2.754.625
DH1522-2105/8-18ST*Cable2.752.75
DH1612-1053/4-20TTLConnector1.53.375
DH1612-1063/4-20TTLConnector2.754.625
DH1612-1073/4-20TTLConnector46.512
DH1612-1093/4-20TTLWires1.53.375
DH1612-1103/4-20TTLWires2.754.625
DH1612-1133/4-20TTLCable1.53.375
DH1612-1143/4-20TTLCable2.754.625
DH1622-1053/4-20STConnector1.53.375
DH1622-1063/4-20STConnector2.754.625
DH1622-1073/4-20STConnector46.512
DH1622-1093/4-20STWires1.53.375
DH1622-1103/4-20STWires2.754.625
DH1622-1133/4-20STCable1.53.375
DH1622-1143/4-20STCable2.754.625
RH1320-0013/8-32STWires1.631.63
RH1320-0033/8-32STCable1.631.63
RH1320-0053/8 DiaSTWires__
RH1320-0063/8 DiaSTCable__
RH1320-0093/8-24STWires1.631.63
RH1320-0103/8-24STCable1.631.63
RH1320-0123/8-24STCable33
RH1512-0055/8-18TTLConnector1.53.375
RH1512-0065/8-18TTLConnector2.754.625
RH1512-0075/8-18TTLConnector46.512
RH1512-0095/8-18TTLCable1.53.375
RH1512-0105/8-18TTLCable2.754.625
RH1512-0135/8-18TTLCable1.53.375
RH1512-0145/8-18TTLCable2.754.625
RH1512-0265/8-18TTLCable1.53.375
RH1512-0275/8-18TTLCable2.754.625
RH1522-0055/8-18STConnector1.53.375
RH1522-0065/8-18STConnector2.754.625
RH1522-0075/8-18STConnector46.512
RH1522-0095/8-18STCable1.53.375
RH1522-0105/8-18STCable2.754.625
RH1522-0135/8-18STCable1.53.375
RH1522-0145/8-18STCable2.754.625
RH1522-0265/8-18STCable1.53.375
RH1522-0275/8-18STCable2.754.625
RH1612-0053/4-20TTLConnector1.53.375
RH1612-0063/4-20TTLConnector2.754.625
RH1612-0073/4-20TTLConnector46.512
RH1612-0093/4-20TTLWires1.53.375
RH1612-0103/4-20TTLWires2.754.625
RH1612-0133/4-20TTLCable1.53.375
RH1612-0143/4-20TTLCable2.754.625
RH1612-0253/4-20TTLCable1.3754.75
RH1612-0263/4-20TTLCable1.53.375
RH1612-0273/4-20TTLCable2.754.625
RH1622-0053/4-20STConnector1.53.375
RH1622-0063/4-20STConnector2.754.625
RH1622-0073/4-20STConnector46.512
RH1622-0093/4-20STWires1.53.375
RH1622-0103/4-20STWires2.754.625
RH1622-0133/4-20STCable1.53.375
RH1622-0143/4-20STCable2.754.625
RH1622-0263/4-20STCable1.53.375
RH1622-0273/4-20STCable2.754.625
AI-Tek Tachometers & Speed Sensors

We're happy to help.

We know speed and frequency. As AI-Tek's largest distributor with experienced product specialists, we can help answer your tough application questions.