Amprobe TACH-20 Contact & Non-Contact Tachometer
The Amprobe TACH-20 Contact & Non-Contact Tachometer measures rotary speed, surface speed and length. It supports both direct contact tests and non-contact checks with an infrared beam. As a result, users can choose the best method for each moving part or surface.
A large LCD helps users read each result with ease. Built-in memory stores maximum, minimum and average values, as well as the last reading. In addition, the data hold function keeps a result on screen when it must be noted or checked.
Flexible Contact Measurement
For contact work, the mechanical adaptor accepts a range of tips. A surface speed wheel also supports direct surface tests on belts, rollers and other moving items. Therefore, the unit can measure contact rotation from 1 to 19,999 rpm and surface speed in several metric and imperial units.
The Amprobe TACH-20 Contact & Non-Contact Tachometer can display surface speed in m/min, m/sec, ft/min, ft/sec and in/min. It can also show length in metres, feet and inches. Simple controls let the user change the mode and unit without a long set-up process.
Fast Non-Contact Checks
For non-contact work, the infrared beam reads rotation without placing the adaptor on the moving part. Reflective tape provides a clear target for the beam during these tests. This mode supports a wide range from 1 to 99,999 rpm and helps reduce contact with fast or hard-to-reach parts.
Two different set types are available for the Amprobe TACH-20 Contact & Non-Contact Tachometer. One set contains the core items for non-contact work, while the wider accessory set adds six adaptors and a carrying case. Both options provide the main items needed to begin taking clear and repeatable readings.
Key Features
- Measures rotary speed by contact or infrared sensing
- Checks surface speed with the supplied contact wheel
- Measures length in metres, feet and inches
- Stores the maximum value from a test session
- Stores the minimum value from a test session
- Calculates and stores the average measured value
- Retains the latest reading for quick review
- Uses data hold to keep a result on the display
- Provides a large digital LCD for clear viewing
- Offers simple unit and measurement mode selection
- Shuts down automatically when left idle
- Uses an infrared beam for non-contact rpm checks
- Accepts several mechanical tips for contact tests
- Supports metric and imperial speed display units
- Comes in two different set types
Technical Specifications
| Product name | Amprobe TACH-20 Contact & Non-Contact Tachometer |
| Measurement functions | Rotational speed, surface speed and length |
| Non-contact rotation range | 1 to 99,999 rpm |
| Contact rotation range | 1 to 19,999 rpm |
| Contact surface speed range | 0.10 to 1,999 m/min |
| Imperial surface speed range | 0.40 to 6,550 ft/min |
| Surface speed units | m/min, m/sec, ft/min, ft/sec and in/min |
| Length units | Metres, feet and inches |
| Non-contact measurement method | Infrared beam used with reflective tape |
| Contact measurement method | Mechanical adaptor with interchangeable tips |
| Surface measurement accessory | Contact surface speed wheel |
| Display type | Large digital LCD |
| Memory functions | Maximum, minimum, average and last measured value |
| Data hold | Keeps the current result visible on the display |
| Power saving | Automatic power-off function |
| Battery type | 2 x AA 1.5 V LR6 alkaline or rechargeable batteries |
| Housing material | ABS |
| Set options | Two different set types are available |
| Manufacturer part code | Not provided |
| Warranty | Not provided |
Comparison Table
| Included item | Core set | Accessory set |
|---|---|---|
| Amprobe TACH-20 tachometer | ✓ | ✓ |
| Batteries | ✓ | ✓ |
| User manual | ✓ | ✓ |
| Reflective tape | ✓ | ✓ |
| Six adaptors | — | ✓ |
| Carrying case | — | ✓ |
Document Downloads
What’s Included
- Amprobe TACH-20 tachometer
- Batteries
- User manual
- Reflective tape
- Six adaptors with the accessory set
- Carrying case with the accessory set