AI-Tek Zero Velocity Magnetic Hall Effect Sensor Switch 3/4 threads H1612-005

Description

Zero Velocity – Magnetic Hall Effect Sensor – 3/4 Threads
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.
Key features to note are:
Reverse voltage protection, up to -30 Vdc, to prevent damage if miswired
Higher temperature range of -40°C to +125°C
Wide range of supply voltage in single design of 4.5 – 24 Vdc
Rugged design meeting IEC 77 Standards (European Railroad Applications)
Suitable for 20 diametral pitch or coarser gear (target)
Specifications:
Power Supply
Power Supply Voltage: 4.5 – 24 Vdc
Power Supply Current: 50 mA maximum
Ouput Voltage: Essentially square wave fanout to 10 TTL inputs
Supply Tracking: (See Figure)
50% ±30% duty cycle
Logic 0: +.6 Vdc maximum
Logic 1: VO = (Vs x RL) / (RL + 2.2k)
Output Impedance: 2.2K Ohms ±5%
Output Current: 20 mA sink maximum
Output Current - Short Circuit: 5 mA maximum with 10V power supply
Reverse Battery Voltage: -30 Vdc
Mechanical
Target Frequency: 0 to 15 kHz
Target Air Gap:
.005 to .020 with a 20 diametral pitch gear
.005 to .045 with a 12 diametral pitch gear
.005 to .060 with a 8 diametral pitch gear
Environmental
Operating Temperature: -40°C to +125°C
Thermal Shock:
100 cycles air to air (-40° to +130°C)
1 min. ramp time with 30 min. soak
Salt Spray: Per MIL-STD-202, method 201, test cond. B, 5% NaCl for 48 hrs. No visible corrosion
Humidity: 92% RH@ 40°C for 90 hrs. No visible corrosion.
Dielectric Strength: Per MIL-STD-202, method 301, 1000 Vrms (60Hz) for 5 sec. leads to case. 1.0 mA max. leakage.
Insulation Resistance: Per MIL-STD-202, method 302, 500 Vdc for 30 sec. leads to case. 100 mega-ohm min.
Vibration: Per MIL-STD-202, resonant frequency search, sine method 204, test cond. C&D (20g); random method 214a, test cond. A&B (7.56g) for 15 min.
Shock: Per MIL-STD-202, method 213b (sawtooth), test cond. H&I (100g, 6 ms), 3 shocks, mutually perpendicular planes.
Materials
Housing: 300 series stainless steel
Round Body with Connector
Part # - H1622-005
Thread - .750-20 UNEF-2A
“A” Dimension - 1.500 (38.100)
“B” Dimension - 3.375 (85.725)
“C” Dimension - 4.012 (101.905)
Output - Supply Tracking