Features:
- The aluminum MSP-3 probe detects motion without contacting the rotating target.
- A remote RMA amplifier conditions the probe pulses before they reach the MFA 4p controller.
- The standard article includes a 1.5 m high-temperature lead and 1/2-inch NPT cable entry.
Siemens 7MH7146-0BA forms the sensing end of an MFA motion-monitoring chain.
Target clearance and alignment determine whether 7MH7146-0BA generates one consistent pulse for each passing feature.
The remote amplifier arrangement lets 7MH7146-0BA remain at the hot machine point while signal processing is mounted farther away.
The complete Siemens 7MH7146-0BA code identifies standard cable length, the MSP-3 probe model, and approval option A.
Siemens 7MH7146-0BA Milltronics MSP-3 Motion Probe Manuals,Datasheets,Link
Important Notice: Other accessories, manuals, cables, calibration data, software, etc. are not included with this equipment unless listed in the above stock item description. All prices are shown in USD.
Probe, Amplifier, and Controller
- Sensing point: The MSP-3 probe detects each passing ferrous target.
- Amplifier stage: The RMA conditions the probe signal away from the hot installation point.
- Controller stage: The MFA 4p compares the pulse rate with its configured motion setpoint.
- Alarm path: The controller relays represent the resulting speed or motion condition.
Gap and Alignment
- Target material: A suitable ferrous target must pass the sensing face.
- Clearance: The gap must remain within the documented sensing range.
- Alignment: The target path should cross the active face consistently.
- Mechanical runout: Excessive shaft or target movement can vary the pulse amplitude.
High-Temperature Lead Arrangement
- Standard lead: The article includes 1.5 m of high-temperature cable.
- Extension: Documented ordering allows a total cable length from 2 to 30 m.
- Entry thread: The probe uses a 1/2-inch NPT cable entry.
- Routing: The lead should be protected from mechanical damage and hot moving parts.
Exact Probe Variant
- First digit: Code 0 selects the standard cable-length arrangement.
- Model letter: Code B selects the aluminum MSP-3 high-temperature probe.
- Approval letter: Code A selects the listed approval option.
- Variant control: The full 7MH7146-0BA number must remain intact during replacement.