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-37ADQO-PECB1 |
| Description | Gear Tooth Speed Sensor; Near zero speed; PNP, EMI filter, 5k pull-down |
| Datasheet | Download Datasheet |
The Standex Electronics A75C-37ADQO-PECB1 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. Near zero speed operation.
Output PNP, EMI filter, 5k pull-down; supply 8 to 32 V DC; frequency range 0.1 Hz to 15 kHz; output low 0.1 V max (Vcc 24 V); output high 22 to 24 V (Vcc 24 V); internal pull-down 4.9 to 5.1 kΩ (Vout to ground); rise time 1.0 µs max; fall time 10 µs max.
Aluminum, black anodized threaded barrel housing, 3/4-20 thread; connection: connector; max air gap .150 in (4 pitch gear) to .020 in (32 pitch gear), typical.
It operates from -40 to +110 °C (150 °C available, contact factory); ESD protection 2000 V; EMI immunity 100 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 | Near zero speed |
| Outputs | 2 digital outputs per tooth, 90° out of phase (speed and direction) |
| Output Type | PNP, EMI filter, 5k pull-down |
| Supply Voltage | 8 to 32 V DC |
| Frequency Range | 0.1 Hz to 15 kHz |
| Output Low Voltage | 0.1 V max (Vcc 24 V) |
| Output High Voltage | 22 to 24 V (Vcc 24 V) |
| Internal Pull-Up / Pull-Down | Pull-down 4.9 to 5.1 kΩ (Vout to ground) |
| Output Rise Time | 1.0 µs max |
| Output Fall Time | 10 µs max |
| Duty Cycle | 40 to 60% |
| Max Air Gap | .150 in (4 pitch gear) to .020 in (32 pitch gear), typical |
| Housing Material | Aluminum, black anodized |
| Mounting Type | Threaded barrel |
| Thread Size | 3/4-20 |
| Connection Type | Connector |
| Operating Temperature | -40 to +110 °C (150 °C available, contact factory) |
| ESD Protection | 2000 V |
| EMI Immunity | 100 V/m (20 kHz to 1 GHz) |