Model · Hansford Sensors
HS-421 4–20 mA vibration sensor (velocity) + AC output
4–20 mA vibration sensor (velocity) + AC output. 6 versions — compare the versions and choose the one to order.

HS-421 versions
Specifications shared by all versions
As specified by the manufacturer. Version-specific parameters are on each variant's page.
- 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
- 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
- Electromagnetic compatibility (EMC)
- EN 61326-1:2013
- Sensing element
- PZT — compression
- Case material
- Stainless steel
- Weight
- 150 g (nominal)
Documentation
- HS-421 datasheet (metric units)PDF · Datasheet · EN · 637 KB · TS1107.4
- HS-421 datasheet (metric units)PDF · Datasheet · EN · 495.9 KB · TS185.10
- HS-421 datasheet (metric units)PDF · Datasheet · EN · 660.4 KB · TS186.10
- HS-421 datasheet (metric units)PDF · Datasheet · EN · 514.7 KB · TS012.12
- HS-421 datasheet (metric units)PDF · Datasheet · EN · 467.3 KB · TS030.11
- HS-421 datasheet (metric units)PDF · Datasheet · EN · 445.7 KB · TS102.11
- HS-421 datasheet (imperial units)PDF · Datasheet · EN · 465 KB · TS030U.8
- HS-421 datasheet (imperial units)PDF · Datasheet · EN · 468 KB · TS102U.10
- HS-421 datasheet (imperial units)PDF · Datasheet · EN · 690.4 KB · TS1107U.4
- HS-421 datasheet (imperial units)PDF · Datasheet · EN · 658.4 KB · TS186U.9
Not sure which version to choose?
Describe the machine, the mounting point and the system the signal goes to — we will recommend the cable exit, connector and cable type.