Get A Quote
My Account
To ensure accuracy, please note that images may be representative. Refer to the product data sheet for detailed specifications.
| Manufacturer | Standex Electronics / Meder |
| Manufacturer Product Number | A75C-37ADQ-5KCP4 |
| Description | Gear Tooth Speed Sensor; True zero speed; NPN, 5k pull-up |
| Datasheet | Download Datasheet |
The Standex Electronics A75C-37ADQ-5KCP4 is a Hall effect quadrature gear tooth speed and direction sensor for ferrous gear teeth, 4 to 32 pitch.
It has 2 digital outputs per tooth, 90° out of phase, so one sensor reads both shaft speed and direction of rotation. True zero speed operation.
Output NPN, 5k pull-up; supply 4.5 to 24 V DC; supply current 1.5 to 5 mA (output off, Vcc 24 V); frequency range 0.1 Hz to 15 kHz; output low 0.4 V max (I sink 20 mA); internal pull-up 4.95 to 5.05 kΩ (Vcc to Vout); rise time 3.0 µs max; fall time 1.0 µs max.
Aluminum, black anodized threaded barrel housing, 3/4-20 thread; connection: 4-pin female Weather Pack with 1 ft jacket; max air gap .160 in (4 pitch gear) to .030 in (32 pitch gear), typical.
It operates from -40 to +110 °C (150 °C available, contact factory); ESD protection 2000 V; EMI immunity 20 V/m (20 kHz to 1 GHz).
| Category | |
| Manufacturer | Standex Electronics / Meder |
| Sensor Type | Quadrature gear tooth speed and direction sensor |
| Sensing Technology | Hall effect |
| Target | Ferrous gear teeth, 4 to 32 pitch |
| Speed Detection | True zero speed |
| Outputs | 2 digital outputs per tooth, 90° out of phase (speed and direction) |
| Output Type | NPN, 5k pull-up |
| Supply Voltage | 4.5 to 24 V DC |
| Supply Current | 1.5 to 5 mA (output off, Vcc 24 V) |
| Frequency Range | 0.1 Hz to 15 kHz |
| Output Low Voltage | 0.4 V max (I sink 20 mA) |
| Internal Pull-Up / Pull-Down | Pull-up 4.95 to 5.05 kΩ (Vcc to Vout) |
| Output Rise Time | 3.0 µs max |
| Output Fall Time | 1.0 µs max |
| Duty Cycle | 40 to 60% |
| Max Air Gap | .160 in (4 pitch gear) to .030 in (32 pitch gear), typical |
| Housing Material | Aluminum, black anodized |
| Mounting Type | Threaded barrel |
| Thread Size | 3/4-20 |
| Connection Type | Connector |
| Connection | 4-pin female Weather Pack with 1 ft jacket |
| Operating Temperature | -40 to +110 °C (150 °C available, contact factory) |
| ESD Protection | 2000 V |
| EMI Immunity | 20 V/m (20 kHz to 1 GHz) |