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Economical Handheld Digital
Tachometer
⻬ 5 Digit LCD Display
⻬ Light Reflex Measurement Technology
⻬ Range 10.00 to 99,999 RPM
⻬ Measuring Distance 50 to 300 mm
⻬ Event Counter with Elapsed Time
(HH:MM)
⻬ HHT-1502 Optional Contact Adaptor
⻬ Max/Min/Hold: True Average
⻬ Auto Range RPM
⻬ RS232 Interface for Model HHT-1501
⻬ Contact RPM and Circumferential
Velocity (HHT-1502CA)
The HHT-1500 Series is an accurate economical, non-contact optical digital
tachometer. All units come complete with reflective tape and carrying case.
An optional contact adaptor, HHT-1502CA is easy to attach and converts the
unit to mechanical measurement. Users affix a tape on the shaft to be
measured. The tachometer measures the time between reflected pulses
of light and calculates the RPM.
with RS232C Software*
HHT-1500 Series
Starts at
$
195
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Specifications
Speed (Optical)
Range Resolution Accuracy
RPM 10.00 ~ 99999 0.01/0.1/1 0.04% ± 2 dgts
rps(Hz) 0.200 ~ 2000.0 0.001/0.01/0.1 0.04% ± 2 dgts
Speed (Contact)
Range Resolution Accuracy
RPM /
(“/”symbolizes “Contact”) 10.00 to 29999 0.001/0.01/0.1/1 0.04% ± 2 dgts
m/min 1.000 to 2999.9 0.001/0.01/0.1 0.04% ± 2 dgts
ft/min 3.00 to 10000 0.001/0.01/0.1 0.04% ± 2 dgts
yard/min 1.00 to 3000 0.001/0.01/0.1 0.04% ± 2 dgts
General Specifications
External TTL Input High > 4.5V (HHT-1501)
Display 5 digits 99999 counts
Sampling Rate 0.7 second (> 60 rpm)
> 1 second (10 to 60 rpm)
Measuring Distance 50 to 300 mm (2 to 12")
Time Base 4.0 MHz Quartz Crystal
Range Selection Automatic
Battery Four 1.5 V “AA” (included)
Auto Power-Off 30 minutes
Operating Temp 0 to 50°C (32 to 122°F)
Size 72 L x 63 W x 36 mm D (6.8 x 2.5 x 1.5")
Weight 190 g (6.7 oz.) (including battery)
HHT-1500,
$195, shown
actual size.
Event Counter
Range Max Input Frequency
0 to 99999 10 KHz with 5% duty cycle
ALL MODELS AVAILABLE FOR FAST DELIVERY!
To Order (Specify Model Number)
Model No. Price Description
HHT-1500 $195 Digital tachometer
HHT-1501 225 Digital tachometer with RS232C cable and software
HHT-1502CA 45 Optional contact adaptor
Q-1
* HHT1501 only.
Comes complete with
carrying case, reflective
tape, 4 “AA” alkaline batteries
and operator’s manual.
Ordering Example:
HHT-1501, digital
tachometer with RS232C
cable and software and
HHT-1502CA, contact
adaptor, $225 + 45 = $270.
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