4031 Magnetic Pickup
4031 series speed sensors measure diesel engine flywheel RPM for use in electric or electric-to-pneumatic overspeed protection systems.
When incorporated into a full shutdown arrangement, the 4031 works together with AMOT’s diesel engine safety parts, providing the rotational input required for temperature-, pressure-, or airflow-based protective devices. The sensor also interfaces directly with AMOT engine speed switches, supplying accurate RPM data for overspeed trip activation and automatic shutdown control.
Features and Benefits
- High output voltage signal
- Superior performance at high temperatures
- Reliable heavy-duty wiring harness available
- Very long servicce life
Models available
| Model | Diameter / Thread | Thread Length | Connection |
| 4031-001 | ¾”-16UNF | 2.29" | 120" wire leads |
| 4031-001DL | ¾”-16UNF | 2.56" | Dual lead 17.7" w/Packard Connector |
| 4031-001S | ¾”-16UNF | 1.79" | 72" wire leads |
| 4031-002 | ⅝”-18UNF | 3.4" | 5" wire leads |
| 4031-002S | ⅝”-18UNF | 1/9" | 5" wire leads |
| 4031-003 | ⅜”-24UNF | 2.27" | 72" wire leads |
| 4031-004 | ¾”-16UNF | 3.5" | |
| 4031-005 | Magnetic Pickup - CAT | 6.55" w/Packard Connector | |
| 4031-M16 | M16 x 1.5 | 2.29" |
| Diameter and Thread: | 3/8”-24UNF, 5/8”-18UNF, ¾”-16UNF, ¾”-M16 |
| Length: | 1.9" to 4.37" |
| Connections: | Terminals, wire leads, wire leads w/ Packard Connectors |
Magnetic Pickups are used to measure engine rpm for automatic electric and automatic electric-to-pneumatic systems. Some example engine applications are listed below.
- Drilling rigs (onshore & offshore)
- Drilling support equipment
- Well servicing equipment
- Refinery support equipment
- Bulk haulers and tankers
- Mining equipment
- Construction equipment
- Generator sets
- Emergency response vehicles and equipment
- Aircraft refueling equipment
- Work boats
- Barges
- Agriculture equipment
Magnetic pick-up sensors are mounted at the diesel engine flywheel. It is used to measure the engine RPM for use by the speed switch in an automatic overspeed protection system. The magnetic pickup senses a sudden change in the magnetic field caused by a metal protrusion of the metal teeth on the engine flywheel. The sensor generates a sine wave for transmission to the speed switch.
