Hansford SensorsHS-421 seriesWith additional AC output
HS-421 4–20 mA vibration sensor (velocity) with additional AC output, top exit, 3-pin MS connector
Outputs: 4–20 mA (vibration velocity) and AC (acceleration), 3-pin MS connector.
- Output AC IEPE + 4–20 mA
- Exit Top exit
- IP IP68
- Connector 3-pin MS
Technical data is taken from the manufacturer's documentation. Before ordering, please confirm the parameters against the current datasheet or with our engineer.
HS Sensors · HS-421 · as of 07/10/2026
Key features
- For PLC / DCS systems and data collectors
- Can be configured for the application
- Piezoelectric element in compression design
Technical specifications
Parameters as specified by the manufacturer.
| Measured quantity | Vibration acceleration, Vibration velocity |
|---|---|
| Measuring range — velocity | 10 / 20 / 25 / 50 / 100 mm/s (standard: 10) |
| Output type | AC (IEPE) — acceleration, 4–20 mA |
|---|
| Cable / connector exit | Top exit |
|---|---|
| Connector | 3-pin MS |
| Mounting thread | 1/4"-28 UNF, female (standard), 1/4"-28 UNF, male, Quick Fit, female, M6 × 1 mm, male, M8 × 1.25 mm, male, M10 × 1.5 mm, male |
| IP rating | IP68 |
|---|---|
| Operating temperature | −25 … +120 °C |
| Electromagnetic compatibility (EMC) | EN 61326-1:2013 |
| Sensing element | PZT — compression |
|---|---|
| Case material | Stainless steel |
| Weight | 150 g (nominal) |
| Features | For data collectors, For PLC / DCS systems |
| Model | HS-421 |
|---|---|
| HS Sensors part no. | HS-421-TOP-3-PIN-MS |
| Manufacturer's product name | HS-421 – Top Exit – 3 Pin MS Dual Output Accelerometer |
Documentation
- HS-421 datasheet (metric units)PDF · Datasheet · EN · 445.7 KB · TS102.11
- HS-421 datasheet (imperial units)PDF · Datasheet · EN · 468 KB · TS102U.10
- HS-421 user manual (and others)PDF · Manual · EN · 288.8 KB
- Stud and pad mounting instructionsPDF · Installation guide · EN · 429.3 KB
- HS-421 3D CAD modelZIP · 3D CAD model · EN · 150.1 KB
Other HS-421 versions
All HS-421 variantsThe same model with a different cable exit, connector or cable type.
- HS-421 4–20 mA vibration sensor (velocity) with additional AC output, top exit, halogen-free HFFR cable
- HS-421 4–20 mA vibration sensor (velocity) with additional AC output, top exit, flame-retardant FR cable
- HS-421 4–20 mA vibration sensor (velocity) with additional AC output, top exit, PUR cable
- HS-421 4–20 mA vibration sensor (velocity) with additional AC output, top exit, braided cable
- HS-421 4–20 mA vibration sensor (velocity) with additional AC output, top exit, M12 connector
Where it is used
Typical applications
- Fans
- Electric motors
- Pumps
- Compressors
- Centrifuges
- Conveyors
- Air handling units
- Gearboxes
- Rolls
- Dryers
- Presses
- Cooling systems
- HVAC systems
- Spindles
- Machine tools
- Process equipment
Related products
Similar products
HS-150 Industrial AC accelerometer, top exit, braided cable
- AC IEPE
- 100 mV/g
- Top exit
- Braided cable
PDF datasheet
HS-150 Industrial AC accelerometer, top exit, FEP cable with conduit
- AC IEPE
- 100 mV/g
- Top exit
- FEP cable
PDF datasheet
HS-150T Accelerometer with temperature output, top exit, braided cable
- AC IEPE + 10 mV/°C
- 10 … 500 mV/g
- Top exit
- IP65
PDF datasheet
HS-150T Accelerometer with temperature output, top exit, M12 connector
- AC IEPE + 10 mV/°C
- 10 … 500 mV/g
- Top exit
- IP67
PDF datasheet
