Laser Tachometer

HHT20A Series

Laser Tachometer

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•	Convenient Pistol Grip Design
•	Safe Non-Contact Operation to 3 m (10') and 45° from Target
•	Autoranging 5 to 100,000 RPM
•	Accuracy & Resolution ±1 RPM
•	Available with Remote Sensor
•	Low Battery and On-Target Indicators
•	Last Measurement Memory
View related products - General Test and Measurement Instruments

The HHT21A combines the accuracy and safety of a noncontact laser tachometer with the convenience and ease of operation of a pistol grip instrument. Simply aim the tachometer at a reflective tape target on the rotating object, squeeze the trigger, and read the RPM. The HHT21 has both internal laser optics and the ability to be used with a remote optical sensor. It may be handheld or mounted utilizing the ¼-20 threaded bushing in the base of the handle.

SPECIFICATIONS
Range: 5 to 100,000 rpm
Accuracy: ±1 rpm
Resolution: 1 rpm
Display: 6-digit, 13 mm (0.5") high LCD
Operating Envelope: Up to 3 m (10') and 45° from reflective target
Power-On Switch: Pistol-grip trigger; can be locked on with latching pushbutton for long-duration measurements
Power: 4 "AA" alkaline batteries (included); optional Ni-Cads can be charged while in tachometer
Battery Life: 6 to 8 hours typical
Dimensions: 82.5 x 44.5 x 155.7 mm plus 120.6 mm handle (3.25 x 1.75 x 6.13" plus 4.75" handle)
Weight: 0.56 kg (1.25 lb)
Mounting: ¼-20 UNC mounting bushing in handle
Temperature: 5 to 40°C (41 to 104°F)
Humidity: Maximum RH 80% for temperatures up to 31°C (88°F), decreasing linearly to 50% RH at 40°C (104°F)
Display Update Rate: 2/s
Recharger (Optional): 115 or 230 Vac, 7.8 Vdc at 50 mA max

Remote Optical Sensor (Optional)
Size: 74 L x 15 mm OD (2.90 L x 0.62"); M16 threaded tube, 2.4 m (8') cable 51 x 51 x 20 mm (2 x 2 x 0.8") mounting bracket with 2 M16 jam nuts
Power: 5 Vdc @ 30 mA (powered from base unit)
Temperature: -10 to 80°C (15 to 180°F)

To Order (Specify Model Number)

What Other People Bought: When you see this icon, click on it to expand a list of products that other people have bought when they purchased this model.

Part Number	Availability	Price	Description	RoHS	Qty.
HHT21A		Consult sales	Tachometer with LCD display, CE approved		qty.

HHT21A-R-KIT		$640.00	Tachometer with LCD display, remote sensor,		qty.


Accessories

HHT-ROS-CABLE		$50.00	7.6 m (25') extension cable for remote sensor		qty.

HHT-RT-5		$13.00	Reflective tape, 1.5 m x 1.3 mm roll (5' x 1/2")		qty.

† All dollar amounts on this site are shown in US currency.

Note: The HHT21A comes complete with operator's manual, 4 AA alkaline batteries, nylon case, NIST traceable calibration certificate and 1.5 m (5') of reflective tape. The HHT21A-R-KIT comes complete with operator's manual, 4 NiCad batteries, recharger, rugged case, 1.5 m (5') of reflective tape, and remote optical sensor with mounting bracket and 2.4 m (8') of cable. Add “-230V” to order with 230 Vac recharger; add $10 to price.
(OPTIONS SHOWN IN THIS "NOTE" ABOVE ARE PRICED IN US$)
Ordering Example: (1) HHT21A-R-KIT Tachometer with LCD display, remote sensor, recharger, and NIST calibration certificate, $640

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