Extech Instruments Pocket Tachometers, Tachometers, Stroboscopes Catalog Page

Tachometers and StroboscopesPocket Tachometers

N Indicates products that are available with optional calibration traceable to NIST. See page 160 for a complete listing.

461920 Mini Laser Photo Tachometer Counter

Non-contact RPM and Revolution count measurements to 99,999 rev

• Measure non-contact RPM readings of rotating objects by pointing the
integral laser at the reflective tape placed on the object to be measured

• Large 5 digit LCD display with backlighting

• Rugged double molded housing with memory button for Last/MAX/MIN readings

• 1 year warranty

• Complete with 9V battery and reflective tape

SPECIFICATIONS

RPM range 2 to 99,999 rpm
Count range 1 to 99,999 rev (revolution)
Target Distance 1.6ft (500mm)
Basic Accuracy ±0.05%
Resolution 0.1rpm, 1 count

Dimensions/Weight 6.2x2.3x1.6" (160x60x42mm)/5.3oz (151g)

Measures the speed
(RPM) of rotating objects
and counts (revolution) of
moving objects.

ORDERING

461920 N
461937 Spare reflective tape (23" each strip), 10pk

Mini Laser Photo Tachometer Counter

RPM33/RPM40 Mini Combination Contact/Laser Photo Tachometers

Quickly measure RPM, surface speed and length with one tool. Use the
contact wheel for up-close readings or laser mode for non-contact readings.

• Large 5 digit backlit LCD display

• Microprocessor based with quartz crystal oscillator to maintain high accuracy

• Provides wide RPM (photo and contact) and Linear
Surface Speed/Length (contact) measurements

• Includes contact wheel, batteries, and reflective tape; 1 year warranty;
RPM33 also includes case; RPM40 also includes cone tip

Model RPM33 Additional Features

• Store/recall 10 data sets in memory with 4 parameters (measurement/max/min/avg)

• Laser guided for greater distance non-contact measurements up to 1.6ft (500mm)

Model RPM40 Additional Features

• Long distance Laser guided measurements up to 4.9ft (1.5m)

SPECIFICATIONS RPM33 RPM40

RPM33 RPM40

Contact

RPM measurement

Laser Photo

RPM measurement

Range (rpm) Photo: 2 to 99,999rpm

Surface Speed 0 to 78,720 inches/min 2.0 to 78,740 inches/min

Length 3.9 to 39370 inches —

Frequency (Hz) 333 Hz —
Accuracy 0.05% rdg +1 digit ±(0.1% rdg +1 digit)
Sampling Time 0.5 Sec > 120rpm 1 Sec > 6rpm
Resolution 0.1rpm (<10,000 rpm); 1rpm (>10,000 rpm) 0.1rpm (<1000 rpm); 1rpm (>1000 rpm)
Dimensions / Weight 6.2x2.3x .6”(160x60x42mm) / 5.3oz (151g) 6.2x2.0x1.3" (160x50x33mm) / 6.4oz (182g)

Contact: 2 to 20,000rpm

0 to 6560 ft/min 0.2 to 6560 ft/min
0 to 2186 yards/min —
0 to 2000 m/min 0.05 to 1999.9 m/min

0.3 to 3280 feet —

0.1 to 1093 yards —

0.1 to 1000 meters —

ORDERING

RPM33 N

RPM40

N

461937 Spare reflective tape (23" each strip), 10pk

Combination Contact/Laser Photo Tachometer

Combination Contact/Laser Photo Tachometer

Photo: 5 to 99,999rpm
Contact: 0.5 to 19,999rpm

461825 Combination Photo Tachometer/Stroboscope

Stroboscope to analyze rotating objects and Tachometer to measure rpms

• Course and fine flash rate adjustments to freeze and analyze rotating objects

• Unique display characters that reverse direction depending on function mode

• Large 0.4" (10mm) 5 digit LCD display and memory stores Last/MAX/MIN readings

• Complete with four 1.5V AA batteries, reflective tape, and case; 1 year warranty

SPECIFICATIONS PHOTO TACHOMETER (RPM) STROBOSCOPE (FPM/RPM)

Range 5 to 99,999 100 to 100,000
Accuracy ±0.1%rdg ±0.1%rdg
Sampling Time 1 Sec ≥ 60rpm; 1 Sec ≥ 60rpm;
Resolution 0.1rpm (<1,000rpm), 1rpm (≥1,000rpm) 0.1fpm (<1,000fpm), 1fpm (≥1,000fpm)
Dimensions/Weight 8.5x2.6x1.5" (215x65x38mm) / 10.6oz (300g) ±0.1%rdg

Ordering

N

461825
461937 Spare reflective tape (23" each strip), 10pk

Combination Photo Tachometer/Stroboscope

461830/461831 Digital StroboTach

Freeze motion and analyze rotating objects without contact

• Checks and analyzes motion and speed by simply aiming and
synchronizing its flash rate (fpm) with a rotating object

• rpms on 4 digit LED display

• Flash/Speed Rate of 100 to 10,000fpm/rpm; Basic accuracy of ±0.05% rdg

• Duty Cycle of 5 to 30mins

• Tripod mount for stationary use

• Dimensions/Weight: 8.3x4.8x4.8" (211x122x122mm)/2.2lbs (1kg)

• Complete with 6ft (1.9m) power cord and handle; 1 year warranty

ORDERING

461834

461830 N

461831

N

461834 Spare Xenon Lamp (est life 300hrs), 2pk

Digital StroboTach 115VAC, 60Hz

Digital StroboTach 220VAC, 50Hz

461950 1/8 DIN Panel Tachometer

Continuous & accurate readings from 5 to 99,990rpm

• Large LED display updates 1/sec (rpm<60)

• Unique design permits rpm measurements of a one hole
gear or disk eliminating the need for special gears

• A pulse is measured when a ferrous object (stud) passes by a proximity sensor

• Choice of two sensor pickup types (both include 6ft/1.8m cable): Proximity
sensor: 0.1" (3mm) target distance, range up to 36,000rpm (600Hz); Photoelectric
sensor: 0.4" (10mm) target distance, range up to 6000rpm (100Hz)

• 1 year warranty

SPECIFICATIONS

rpm 5 to 99,990rpm
Basic accuracy ±0.05%
Resolution 0.1rpm (5 to 1000rpm), 1rpm (1000 to 9999rpm), 10rpm (10,000rpm to 99,990rpm)
Power 115V or 230V AC; 50/60Hz

461957
Photoelectric

461955
Proximity

Dimensions/Weight Bezel 3.8x1.9x2.4" (96x48x60mm); Panel cutout 3.6x1.8" (92x45mm)

Sampling Time 1sec>60rpm, >1sec>10 to 60rpm
Dimensions/ Weight 4.9x2x1.3" (124x50x33mm)/ 4oz (114g)

ORDERING

461950 N
461955 Proximity Sensor, max. 36,000rpm

461957 Photoelectric Sensor, max. 6000rpm

Meter 3.6x3.5x1.7" (92x90x42mm)/ 14oz (397g)

1/8 DIN Panel Mount Tachometer

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