
Combination Contact and Non-Contact Digital Tachometer
When using the non-contact mode, rotational speed (RPM) is measured using a visible beam of light. The CDT-2000HD can be up to 24 inches away from the reflective tape target that is affixed to the rotating element. In the contact operating mode, the speed is sensed by directly contacting a rotating device using one of the contact adapters supplied with the instrument.
The CDT-2000HD's rugged construction, portability and outstanding features make It an ideal choice for maintenance personnel, machine operators or others in a variety of machinery and material handling applications.
A non-contact only version, the CDT-1000HD, is also available.
Also known as Fluke 931, Testo 470, Rotaro, TACH-20
- Measures speeds from as low as 1.00 rpm up to 99,999 rpm
- Accuracy of 0.02% with a resolution of 0.01 RPM
- Includes DAkkS Traceable calibration Certificate
- Built-in memory stores maximum, minimum, average and last reading for recall to the display
- NEW - Molded Rubber Shell Provides Additional Physical & Environmental Protection
- NEW - Now includes larger 6 inch circumference Surface Speed Wheel standard
- NEW - Can be set for use with 2 optional-sized surface speed wheels (12 inch or 10 cm circumference)

| RPM | |||
| Non-Contact | 1-99,999 | ||
| Contact | 1-19,999 | ||
| Surface Speed | 6"* (Standard) | 12"* | 0.1 m* |
| m/min | 0.10-1,524 | 0.40-609.6 | 0.10-1,999 |
| ft/min | 0.40-5,000 | 0.40-2,000 | 0.40-6,550 |
| in/min | 4.00-60,000 | 4.00-24,000 | 4.00-78,700 |
| m/sec | 0.10-25.40 | 0.10-10.16 | 0.10-33.30 |
| ft/sec | 0.10-83.33 | 0.10-33.33 | 0.10-109 |
| Total Length | |||
| Meters | 99,999 | ||
| Feet | 99,999 | ||
| Inches | 99,999 | ||
| *Note: Sizes listed are the circumference of measuring wheel | |||
Units of Measure Indicators show the user-selected units of measure.
Contact Indicator shows if contact or non-contact operation is selected.
Low Battery Indicator alerts the operator if the batteries are low.
On-Target Indicator confirms that the measurements are reliable.
Memory Indicators are illuminated when the maximum, minimum, average and last readings are recalled to the display for viewing.
Specifications
| RPM, Non-Contact | 1.00 - 99,999 rpm |
|---|---|
| RPM, Contact | 1.00 - 19,999 rpm |
| Surface Speed | 0.30 - 6,500 feet/min; 0.10 - 1,999 meters/min; 4.0 - 78,000 inches/min |
| Length | 0.01 - 99,999 feet; 0.02 - 99,999 meters; 1.0 - 99,999 inches |
| Resolution | 0.01 from 0 - 100; 0.1 from 100 - 1,000; 1 from 1,000 - 99,999 |
|---|---|
| Accuracy | ± 0.02% of reading or 1 digit |
| Display | 5-digit LCD, 10 mm high |
| Decimal Point | Automatic |
| Memory System | Maximum, minimum and last reading (retained in memory for the life of the batteries) |
| Measurement System | Non-contact visible LED light beam; contact adapter |
| Engineering Units | RPM; ft/min, in/min and meters/min; feet, inches, meters |
| Sensing Distance | Up to 24 inches (60 cm) |
| Display Update Time | 0.5 seconds or one measuring cycle |
| Auto Power Off | After 30 seconds of non-use (minimum, maximum and last reading retained in memory) |
| Battery Life | 40 hours continuous use |
| Battery | 2 AA (1.5 V) or rechargeable |
| Weight | 6 ounces (170 grams) |
| Housing Material | ABS plastic housing with removable protective rubber shell |
| Housing Rating | IP40 |
| Operating Temperature | 32 to 122° F (0 to 50° C) |
| Storage Temperature | -4 to 150° F (-20 to 70° C) |
| Accessories Included | Contact adapter, cone tip, universal surface speed wheel, reflective tape, operating instructions and foam-fitted, hard plastic carrying case |
| Optional Accessories | Shaft extension, 3.15 inches (80 mm) |
| Warranty | 5 years |
| Calibration Certificate | Included |
Shipping
| Carriers | UPS or FedEx for domestic orders; FedEx for international orders |
|---|---|
| Shipping cost | Calculated automatically at checkout for US orders. International orders require a complete ship-to address with postal code. |
| Freight terms | FOB shipping point, freight prepaid. Title passes to the buyer at the vendor's dock. |
| Hazardous items | Epoxy adhesives, batteries and paint markers cannot ship by air freight |
| International | Shipping fees do not include taxes, tariffs or duties |
Returns
| Return window | 7 calendar days from delivery. Contact us before returning any item. |
|---|---|
| Condition | New, unaltered and unused. Special and custom orders are not returnable. |
| Restocking fee | 15% on non-defective items that are not being exchanged |
| Full policy | Refund / Return Policy |
See our Shipping & Billing Terms for how estimated shipping is charged, and our Refund / Return Policy.
Questions about shipping on this item? Call (214) 238-0493 or contact us.

