Sentry
Sentry ST-722 Non-Contact Tachometer Laser Auto-Ranging 99,999 RPM
Measures rotation speed up to 99,999 RPM non-contact from 100 cm with laser sighting and stores 40 readings
- TypeTest Equipment
- Color/FinishRed
- Item Count1 pack
- Selling UnitBox
- Parts3 Years
- Labor1 Year
- Measures up to 99,999 RPM without touching the shaft
- Laser sighting lets you aim accurately from 100 cm away
- Auto-ranging selects the correct scale from 6.0 RPM upward
- Stores 40 readings for quick recall on the job
- Tripod bushing enables hands-free operation during long tests
Hand-Held Tachometer for Rotation Speed
The Sentry ST-722 is a non-contact tachometer that measures rotation speed from 6.0 to 99,999 RPM using a laser sight. It stores up to 40 readings in memory and offers auto-ranging with fixed decimal selection. The unit is intended for electricians and maintenance technicians who need quick speed checks without physical contact.
Red ABS Housing with Tripod Mount
The red ABS body measures 147 by 49 by 29 millimetres and weighs 95 grams without the 9 V battery. A tripod mounting bushing on the base allows hands-free operation during extended monitoring. Laser sighting lets you aim at targets up to 100 centimetres away, while the contact adapter kit is not included for this model.
Verify Power Source and Measurement Range
Confirm you have a 9 V battery available, as the meter does not operate without one. Ensure the expected RPM falls within the 6.0 to 99,999 range and that the required accuracy of ±0.01% up to 5,999.9 RPM or ±0.05% above 6,000 RPM meets your application. Buyers needing contact-mode measurement or surface speed and length functions should select a different instrument.
Highlights
- Measures up to 99,999 RPM without touching the shaft
- Laser sighting lets you aim accurately from 100 cm away
- Auto-ranging selects the correct scale from 6.0 RPM upward
- Stores 40 readings for quick recall on the job
- Tripod bushing enables hands-free operation during long tests
Specifications
| Brand | SENTRY |
|---|---|
| Model | ST-722 |
| Type | Test Equipment |
| Color/Finish | Red |
| Item Count | 1 pack |
| Selling Unit | Box |
| Parts | 3 Years |
| Labor | 1 Year |
Questions about this item
How far can the Sentry ST-722 measure RPM without touching the shaft?
The non-contact laser works up to 100 cm or 40 inches from the target, covering 6.0 to 99,999 RPM.
What mounting option does the ST-722 body provide for stationary use?
A tripod mounting bushing is built into the 147 x 49 x 29 mm housing so the meter can be fixed in place.
How do I store a reading on the ST-722 and how many can it hold?
Press the memory button after a measurement; the unit retains up to 40 readings in its internal memory.
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