RPM Sensors | McMaster-Carr

	Scale Scale

	Power Source Power Source

Electric

Battery

Mechanical

	Tachometer Type Tachometer Type

Noncontact

Contact

	Measures Measures

Speed

Distance

	Maximum Measuring (Velocity) Maximum Measuring (Velocity)

	Voltage Voltage

100V AC

120V AC

240V AC

	Housing Material Housing Material

Plastic

Aluminum

Steel

	Minimum Measuring (Velocity) Minimum Measuring (Velocity)

	Output Type Output Type

Voltage

Current

	Frequency Frequency

50-400 Hz

50 Hz

60 Hz

	DFARS (Defense Acquisition Regulations Supplement) DFARS (Defense Acquisition Regulations Supplement)

DFARS Specialty Metals
COTS-Exempt

	RoHS (Restriction of Hazardous Substances) RoHS (Restriction of Hazardous Substances)

RoHS Compliant

	Depth Depth

2 1/2"

4.33"

4 1/2"

	Height Height

1.74"

1.89"

4.8"

	Width Width

3.58"

3.7"

3.78"

	REACH (Registration, Evaluation, Authorization and Restriction of Chemicals) REACH (Registration, Evaluation, Authorization and Restriction of Chemicals)

REACH Compliant

	Environmental Rating Environmental Rating

NEC Class I Divisions 1, 2
Groups C, D

NEC Class II Divisions 1, 2
Groups E, F, G

NEMA 4X

	Electrical Connection Type Electrical Connection Type

Hardwire

Plug

	For Panel Cutout Depth For Panel Cutout Depth

3.5"

4.5"

	Maximum Measuring Distance Maximum Measuring Distance

	Environment Environment

	Switch Configuration Switch Configuration

Turns "Off" to "On"
(Normally Open)

Turns "On" to "Off" (Normally
Closed)

	Specifications Met Specifications Met

CE Marked

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65 Products

High-Accuracy Panel-Mount Tachometers with Certificate of Calibration

Accurate to within ±0.001% of reading, these tachometers come with a calibration certificate traceable to NIST that states they’ve passed a test for accuracy. Install in a convenient location and measure speed remotely using a sensor (sold separately). Use the buttons on the front panel to program the unit.

Proximity sensor detects moving metal objects, such as gear teeth and fan blades and can be used in dirty and wet environments. Maximum measuring distance is 0.2" from a 1/2" minimum size metal target.

Magnetic sensor has a maximum measuring distance of 0.005" from a 0.1" minimum size ferrous metal target.

Optical sensor performs best in clean environments and works at up to a 45° angle from reflective tape.

			For Panel Cutout
Totalizing Range	Display Type	Scale	Ht.	Wd.	Dp.	Voltage	Frequency	Wire Connection Type	Connection Type	Features	DIN Trade Size	Mounting Hardware Included		Each
5-999,990 rpm Measuring Range (±0.001% Accuracy)
Tachometer
1-99,999	LED	Flashes per Minute, rph, rpm, rps, Total Revolutions	1.8"	3.6"	4.5"	100-240V AC	50 Hz/60 Hz	Screw Terminals	__	Maximum Reading Recall, Minimum Reading Recall, Programmable, Totalizing Mode	1/8	Yes	0000000	0000000
Tachometer with 4 mA-20 mA Current Output
1-99,999	LED	Flashes per Minute, rph, rpm, rps, Total Revolutions	1.8"	3.6"	4.5"	100-240V AC	50 Hz/60 Hz	Screw Terminals	4-pin USB Type A (Male)	Maximum Reading Recall, Minimum Reading Recall, Programmable, Totalizing Mode, Two Internal Alarms	1/8	Yes	00000000	000000
Tachometer with 0V DC-5V DC Voltage Output
1-99,999	LED	Flashes per Minute, rph, rpm, rps, Total Revolutions	1.8"	3.6"	4.5"	100-240V AC	50 Hz/60 Hz	Screw Terminals	4-pin USB Type A (Male)	Maximum Reading Recall, Minimum Reading Recall, Programmable, Totalizing Mode, Two Internal Alarms	1/8	Yes	00000000	000000

Sensors

Proximity Sensor

Magnetic Sensor

Optical Sensor

Sensor Type	Measuring Range, rpm	Max. Measuring Distance	Min. Target Size	Lg.	Dia.	Cable Lg., ft.	Operating Temp. Range, °F		Each
Proximity	1-60,000	0.2"	1/2"	1.3"	0.55"	6	-4° to 140°	0000000	0000000
Magnetic	1-99,999	0.005"	0.1"	2"	0.63"	8	-100° to 225°	0000000	000000
Optical	1-250,000	3ft.	__	2.9"	0.63"	8	-14° to 158°	0000000	000000

High-Accuracy Panel-Mount Tachometers

Accurate to within ±0.005% of reading. Install this tachometer in a convenient location and measure speed remotely using a sensor (sold separately). It updates twice per second when the reading exceeds 120 rpm.

Magnetic sensor has a maximum measuring distance of 0.005" from a 0.1" minimum size ferrous metal target.

Optical sensor performs best in clean environments and works at up to a 45° angle from reflective tape.

				For Panel Cutout
Measuring Range, rpm	Accuracy	Display Type	Scale	Ht.	Wd.	Dp.	Voltage	Frequency	Wire Connection Type	DIN Trade Size	Mounting Hardware Included		Each
5-99,999	±0.005%	LED	rpm	1.8"	3.6"	4.5"	100-240V AC	50 Hz/60 Hz	Screw Terminals	1/8	Yes	0000000	0000000

Sensors

Proximity Sensor

Magnetic Sensor

Optical Sensor

Sensor Type	Measuring Range, rpm	Max. Measuring Distance	Min. Target Size	Lg.	Dia.	Cable Lg., ft.	Operating Temp. Range, °F		Each
Proximity	1-60,000	0.2"	1/2"	1.3"	0.55"	6	-4° to 140°	0000000	0000000
Magnetic	1-99,999	0.005"	0.1"	2"	0.63"	8	-100° to 225°	0000000	000000
Optical	1-250,000	3ft.	__	2.9"	0.63"	8	-14° to 158°	0000000	000000

Panel-Mount Tachometers

Install in a convenient location and measure speed remotely using a sensor (sold separately).

Proximity sensor detects moving metal objects, such as gear teeth and fan blades.

Photoelectric sensor generates a light beam across a 0.8" wide gap. When a rotating object enters this gap, the beam is broken.

				For Panel Cutout
Measuring Range, rpm	Accuracy	Display Type	Scale	Ht.	Wd.	Dp.	Voltage	Frequency	Wire Connection Type	DIN Trade Size	Mounting Hardware Included		Each
5-99,990	±0.05%	LED	rpm	1.8"	3.6"	3.5"	120V AC/240V AC	50 Hz/60 Hz	Screw Terminals	1/8	Yes	00000000	0000000

Sensors

Proximity Sensor

Photoelectric Sensor

Sensor Type	Max. Speed Measured, rpm	Max. Measuring Distance	Ht.	Wd.	Dp.	Cable Lg., ft.	Operating Temp. Range, °F		Each
Proximity	36,000	0.1"	1.4"	0.71"	0.71"	6	0° to 130°	00000000	000000
Photoelectric	6,000	0.4"	2 1/2"	2"	0.8"	6	0° to 130°	00000000	000000

Noncontact Tachometers

Noncontact tachometers emit a beam of light or laser that reflects off a piece of reflective tape attached to the rotating point.

Measuring Range, rpm	Accuracy	Max. Measuring Distance	Display Type	Includes	Scale	Batteries Included		Each
2-99,999	±0.05%	20"	LCD	2 ft. Reflective Tape	rpm	Yes	0000000	0000000

Replacement 9-Volt Battery (Pkg. of 1)	00000000	Pkg.	00000
Reflective Tape Roll (5 ft. Lg. × 1/2 Wd.)	0000000	Each	00000
Reflective 1/2" Sq. Tape Tabs (Sheet of 35)	00000000	Each	0000

Noncontact Tachometers with Certificate of Calibration

This tachometer comes with a calibration certificate traceable to NIST that states it has passed a test for accuracy. Noncontact tachometers emit a beam of light or laser that reflects off a piece of reflective tape attached to the rotating point.

Measuring Range, rpm	Accuracy	Max. Measuring Distance	Display Type	Includes	Scale	Batteries Included		Each
2-99,999	±0.05%	20"	LCD	2 ft. Reflective Tape	rpm	Yes	0000000	0000000

Replacement 9-Volt Battery (Pkg. of 1)	00000000	Pkg.	00000
Reflective 1/2" Sq. Tape Tabs (Sheet of 35)	00000000	Each	0000
Reflective Tape Roll (5 ft. Lg. × 1/2 Wd.)	0000000	Each	00000

High-Accuracy Noncontact Tachometers

Accurate to within ±0.01% of reading. Noncontact tachometers emit a beam of light or laser that reflects off a piece of reflective tape attached to the rotating point. This unit has a 1/4"-20 female threaded bushing for tripod mounting.

Measuring Range, rpm	Accuracy	Max. Measuring Distance, ft.	Display Type	Includes	Scale	Batteries Included		Each
5-99,999	±0.01%	3	LCD	1/4"-20 Female Threaded Bushing, 12" Reflective Tape	rpm	Yes	00000000	0000000

Optional Plastic Carrying Case	00000000	Each	000000
Reflective 1/2" Sq. Tape Tabs (Sheet of 35)	00000000	Each	0000
Reflective Tape Roll (5 ft. Lg. × 1/2 Wd.)	0000000	Each	00000
Replacement AA Batteries (Pkg. of 4)	00000000	Pkg.	0000
Optional Plastic Carrying Case	00000000	Each	00000

Noncontact Tachometers with Stroboscope

Measure speed and inspect moving equipment.

							Flash
Measuring Range, rpm	Accuracy	Max. Measuring Distance, ft.	Display Type	Includes	Scale	Stroboscope Speed Measuring Range, rpm	Frequency Range	Duration, µs	Batteries Included		Each
5-99,999	±0.1%	1	LCD	2 ft. Reflective Tape	rpm	100-99,999	100-99,999 per Minute	60-1,000	Yes	000000	0000000

Reflective 1/2" Sq. Tape Tabs (Sheet of 35)	00000000	Each	00000
Replacement AA Batteries (Pkg. of 4)	00000000	Pkg.	0000
Reflective Tape Roll (5 ft. Lg. × 1/2 Wd.)	0000000	Each	00000

Noncontact Tachometers with Stroboscope and Certificate of Calibration

This tachometer comes with a calibration certificate traceable to NIST that states it has passed a test for accuracy. It lets you measure speed and inspect moving equipment.

							Flash
Measuring Range, rpm	Accuracy	Max. Measuring Distance, ft.	Display Type	Includes	Scale	Stroboscope Speed Measuring Range, rpm	Frequency Range	Duration, µs	Batteries Included		Each
5-99,999	±0.1%	1	LCD	2 ft. Reflective Tape	rpm	100-99,999	100-99,999 per Minute	60-1,000	Yes	000000	0000000

Reflective 1/2" Sq. Tape Tabs (Sheet of 35)	00000000	Each	00000
Reflective Tape Roll (5 ft. Lg. × 1/2 Wd.)	0000000	Each	00000
Replacement AA Batteries (Pkg. of 4)	00000000	Pkg.	0000

Cordless Stroboscopes with Certificate of Calibration

This stroboscope comes with a calibration certificate traceable to NIST that states it has passed a test for accuracy. It shines a bright flashing light at a moving object to make it appear slow moving. Use to measure speed and to visually inspect belts and pulleys for signs of wear, such as cracking and fraying, without turning off the machine. It has a 1/4"-20 female threaded bushing for tripod mounting.

Stroboscopes
			Flash										Replacement Flash Bulbs
Measuring Range, rpm	Accuracy	Display Type	Duration, µs	Frequency Range	Wattage	Voltage	Housing Material	Batteries Included	Battery Type	Includes		Each		Each
30-20,000	±0.002%	LCD	20-50	30-20,000 per Minute	13W	120V AC 240V AC	Plastic	Yes	Rechargeable	1/4"-20 Female Threaded Bushing, 120/240V AC Charger	0000000	0000000	0000000	000000

Optional Plastic Carrying Case	Each	0000000
Replacement Battery Pack	Each	000000
Replacement Battery Charger	Each	00000

Cordless Stroboscopes

Shine a bright flashing light at a moving object to make it appear slow moving. Use to measure speed and to visually inspect belts and pulleys for signs of wear, such as cracking and fraying, without turning off the machine. This unit has a 1/4"-20 female threaded bushing for tripod mounting.

Stroboscopes
			Flash										Replacement Flash Bulbs
Measuring Range, rpm	Accuracy	Display Type	Duration, µs	Frequency Range	Wattage	Voltage	Housing Material	Batteries Included	Battery Type	Includes		Each		Each
30-10,000	±0.002%	LCD	20-50	30-10,000 per Minute	13W	120V AC 240V AC	Plastic	Yes	Rechargeable	1/4"-20 Female Threaded Bushing, 120/240V AC Charger	0000000	0000000	0000000	000000

Replacement Battery Pack	Each	0000000
Optional Plastic Carrying Case	Each	000000
Replacement Battery Charger	Each	00000

Plug-In Stroboscopes

Stroboscopes
			Flash											Replacement Flash Bulbs
Measuring Range, rpm	Accuracy	Display Type	Duration, µs	Frequency Range	Wattage	Voltage	Frequency Range	Housing Material	Plug Type	Cord Lg., ft.	Features		Each		Each
30-10,000	±0.002%	LCD	20-50	30-10,000 per Minute	13W	120V AC/240V AC	50 Hz-400 Hz	Plastic	Three Prong	5	Backlit Display	0000000	0000000	0000000	000000

Optional Plastic Carrying Case

0000000

Each

0000000

Plug-In Stroboscopes with Certificate of Calibration

Stroboscopes
			Flash											Replacement Flash Bulbs
Measuring Range, rpm	Accuracy	Display Type	Duration, µs	Frequency Range	Wattage	Voltage	Frequency Range	Housing Material	Plug Type	Cord Lg., ft.	Features		Each		Each
30-20,000	±0.002%	LCD	20-50	30-20,000 per Minute	13W	120V AC/240V AC	50 Hz-400 Hz	Plastic	Three Prong	5	Backlit Display	0000000	0000000	0000000	000000

Optional Plastic Carrying Case

0000000

Each

0000000

Heavy Duty Plug-In Stroboscopes

An aluminum housing makes this stroboscope strong and durable. It works by shining a bright flashing light at a moving object to make it appear slow moving. Use to measure speed and to visually inspect belts and pulleys for signs of wear, such as cracking and fraying, without turning off the machine. It has a 3-pin female M16 threaded connector.

				Flash
Measuring Range, rpm	Accuracy	Max. Measuring Distance, ft.	Display Type	Duration, µs	Frequency Range	Wattage	Voltage	Frequency	Housing Material	Plug Type	Cord Lg., ft.	Features		Each
60-12,000	±0.01%	5	LED	10-30	60-12,000 per Minute	45W	240V AC	50Hz/60Hz	Aluminum	Three Prong	9	External Trigger Sensor	00000000	0000000

Replacement Flash Bulb

00000000

Each

000000

Heavy Duty Plug-In Stroboscopes with Certificate of Calibration

This stroboscope comes with a calibration certificate traceable to NIST that states it has passed a test for accuracy. An aluminum housing makes it strong and durable. It works by shining a bright flashing light at a moving object to make it appear slow moving. Use to measure speed and to visually inspect belts and pulleys for signs of wear, such as cracking and fraying, without turning off the machine. It has a 3-pin female M16 threaded connector.

				Flash
Measuring Range, rpm	Accuracy	Max. Measuring Distance, ft.	Display Type	Duration, µs	Frequency Range	Wattage	Voltage	Frequency	Housing Material	Plug Type	Cord Lg., ft.	Features		Each
60-12,000	±0.01%	5	LED	10-30	60-12,000 per Minute	45W	240V AC	50Hz/60Hz	Aluminum	Three Prong	9	External Trigger Sensor	00000000	0000000

Replacement Flash Bulb

00000000

Each

000000

Surface Contact Tachometers

Place against enclosures of rotating equipment to measure speed. This tachometer is an excellent choice for dirty and dusty environments. The reeds are precision calibrated and arranged in two easy-to-read rows. Also known as a reed tachometer.

Measuring Range, rpm	Accuracy	Ht.	Wd.	Dp.	Power Source		Each
1,000-4,000	±0.5%	3"	2"	2 1/2"	Mechanical	000000	0000000

High-Accuracy Digital Contact Tachometers with Certificate of Calibration

Accurate to within ±0.006% of reading, these tachometers come with a calibration certificate traceable to NIST that states they've passed a test for accuracy. Contact tachometers come in direct contact with the object measured and are an excellent choice for dirty and dusty environments.

Note: Units are calibrated to work with either a 6" or 12" circumference speed wheel but not both.

Choose tachometer with LCD for use in bright light.

Choose tachometers with LED for use in dimly lit areas.

0.1-25,000 rpm Measuring Range (±0.006% Accuracy)
Display Type	Includes	Scale	Batteries Included		Each
LCD	6" Speed Wheel, Measuring Tip for Flat-End Surfaces, 3 1/2" Extension Shaft, Two Measuring Tips for Shafts with Center Hole	cm, ft., ft./hr, ft./min, in., in./min, m, m/hr, m/min, mph, rph, rpm, Total Revolutions, yd., yd./hr, yd./min	Yes	00000000	0000000
LCD	12" Speed Wheel, Measuring Tip for Flat-End Surfaces, 3 1/2" Extension Shaft, Two Measuring Tips for Shafts with Center Hole	cm, ft., ft./hr, ft./min, in., in./min, m, m/hr, m/min, mph, rph, rpm, Total Revolutions, yd., yd./hr, yd./min	Yes	00000000	000000
LED	6" Speed Wheel, Measuring Tip for Flat-End Surfaces, 3 1/2" Extension Shaft, Two Measuring Tips for Shafts with Center Hole	cm, ft., ft./hr, ft./min, in., in./min, m, m/hr, m/min, mph, rph, rpm, Total Revolutions, yd., yd./hr, yd./min	Yes	00000000	000000
LED	12" Speed Wheel, Measuring Tip for Flat-End Surfaces, 3 1/2" Extension Shaft, Two Measuring Tips for Shafts with Center Hole	cm, ft., ft./hr, ft./min, in., in./min, m, m/hr, m/min, mph, rph, rpm, Total Revolutions, yd., yd./hr, yd./min	Yes	00000000	000000

Replacement AA Batteries (Pkg. of 4)	Pkg.	00000
Optional Carrying Case	Each	00000
12" Circumference Grooved Speed Wheel	Each	000000
3 1/2" Extension Shaft	Each	00000
1/2" Dia. Measuring Tip for Shafts with Center Hole	Each	0000
12" Circumference Smooth Speed Wheel	Each	00000
3/4" Dia. Measuring Tip for Flat-End Surfaces	Each	00000
1 1/4" Dia. Measuring Tip for Shafts with Center Hole	Each	00000
3/4" Dia. Measuring Tip for Shafts with Center Hole	Each	00000
1/2" Dia. Measuring Tip for Flat-End Surfaces	Each	0000
6" Circumference Grooved Speed Wheel	Each	00000
6" Circumference Smooth Speed Wheel	Each	00000

Digital Contact Tachometers with Certificate of Calibration

This tachometer comes with a calibration certificate traceable to NIST that states it has passed a test for accuracy. Measure speed on an easy-to read digital display. Contact tachometers come in direct contact with the object measured and are an excellent choice for dirty and dusty environments.

Measuring Range, rpm	Accuracy	Display Type	Includes	Scale	Batteries Included		Each
0.5-19,999	±0.05%	LCD	4" Speed Wheel, Measuring Tip for Flat-End Surfaces, Measuring Tip for Shafts with Center Hole	ft./min, m/min, rpm	Yes	0000000	0000000

Measuring Tip for Shafts with Center Hole	0000000	Each	000000
4" Circumference Speed Wheel	0000000	Each	00000
Measuring Tip for Flat-End Surfaces	0000000	Each	00000
Replacement AA Batteries (Pkg. of 4)	00000000	Pkg.	0000

Digital Contact Tachometers

Measure speed on an easy-to read digital display. Contact tachometers come in direct contact with the object measured and are an excellent choice for dirty and dusty environments.

Measuring Range, rpm	Accuracy	Display Type	Includes	Scale	Batteries Included		Each
0.5-19,999	±0.05%	LCD	4" Speed Wheel, Measuring Tip for Flat-End Surfaces, Measuring Tip for Shafts with Center Hole	ft./min, m/min, rpm	Yes	0000000	0000000

Replacement AA Batteries (Pkg. of 4)	00000000	Pkg.
Measuring Tip for Shafts with Center Hole	0000000	Each
4" Circumference Speed Wheel	0000000	Each
Measuring Tip for Shafts with Flat-End Surfaces	0000000	Each

Dial Contact Tachometers

In addition to taking rpm measurements, you can monitor rpm variance on the dial. Contact tachometers come in direct contact with the object measured and are an excellent choice for dirty and dusty environments.

Use the optional extension shaft to access hard-to-reach areas.

Measuring Range, rpm	Accuracy	Rotation Direction	Includes		Each
0-4,000	±5%	Clockwise, Counterclockwise	Measuring Tip for Flat-End Surfaces, Measuring Tip for Shafts with Center Hole	000000	0000000

Optional 12" Extension Shaft	000000	Each	000000
Replacement Tips (One for Shafts with Center Hole, One for Flat-End Surfaces)	000000	Set	00000

Contact/Noncontact Tachometers

Capture high-speed readings from a distance in noncontact mode or use the speed wheel to switch to contact mode. This tachometer comes with a calibration certificate traceable to NIST that states it has passed a test for accuracy. It has a 1/4"-20 female threaded bushing for tripod mounting.

BNC cable (sold separately) sends signals from the tachometer to a data collector.

Measuring Range, rpm		Accuracy
Contact	Noncontact	Contact	Noncontact	Max. Measuring Distance, ft.	Display Type	Includes	Scale	Batteries Included		Each
0.5-20,000	5-200,000	±0.05%	±0.01%	25	LCD	4" Speed Wheel, 1/4"-20 Female Threaded Bushing, 5 ft. Reflective Tape, Measuring Tip for Flat-End Surfaces, Measuring Tip for Shafts with Center Hole	cm/hr, cm/min, cm/sec, ft./hr, ft./min, ft./sec, in./hr, in./min, in./sec, m/hr, m/min, m/sec, rph, rpm, rps, yd./hr, yd./min, yd./sec	Yes	00000000	0000000

Reflective Tape Roll (5 ft. Lg. × 1/2" Wd.)	0000000	Each	000000
Reflective 1/2" Sq. Tape Tabs (Sheet of 35)	00000000	Each	0000
BNC Cable	00000000	Each	00000
Replacement AA Batteries (Pkg. of 4)	00000000	Pkg.	0000

Contact/Noncontact Tachometers with Thermometer and Certificate of Calibration

This tachometer comes with a calibration certificate traceable to NIST that states it has passed a test for accuracy. It takes both speed and temperature measurements. This unit has a contact tip on one end and a noncontact sensor on the other.

Measuring Range, rpm
Contact	Noncontact	Accuracy	Max. Measuring Distance, ft.	Display Type	Includes	Scale	Temp. Measuring Range, °F	Batteries Included		Each
0.5-20,000	10-99,999	±0.05%	6 1/2	LCD	4" Speed Wheel, Measuring Tip for Flat-End Surfaces, Measuring Tip for Shafts with Center Hole, 24" Reflective Tape	ft./min, m/min, rpm	-4° to 600°	Yes	0000000	0000000

Measuring Tip for Shafts with Flat-End Surfaces	0000000	Each	000000
4" Circumference Speed Wheel	0000000	Each	00000
Reflective Tape Roll (5 ft. Lg. × 1/2" Wd.)	0000000	Each	00000
Replacement AA Batteries (Pkg. of 4)	00000000	Pkg.	0000
Measuring Tip for Shafts with Center Hole	0000000	Each	00000
Reflective 1/2" Sq. Tape Tabs (Sheet of 35)	00000000	Each	0000

Contact/Noncontact Tachometers with Thermometer

Take speed and temperature measurements. This tachometer has a contact tip on one end and a noncontact sensor on the other.

Measuring Range, rpm
Contact	Noncontact	Accuracy	Max. Measuring Distance, ft.	Display Type	Includes	Scale	Temp. Measuring Range, °F	Batteries Included		Each
0.5-20,000	10-99,999	±0.05%	6 1/2	LCD	4" Speed Wheel, Measuring Tip for Flat-End Surfaces, Measuring Tip for Shafts with Center Hole, 24" Reflective Tape	ft./min, m/min, rpm	-4° to 600°	Yes	0000000	0000000

Reflective 1/2" Sq. Tape Tabs (Sheet of 35)	00000000	Each	00000
Measuring Tip for Shafts with Flat-End Surfaces	0000000	Each	00000
Measuring Tip for Shafts with Center Hole	0000000	Each	00000
Replacement AA Batteries (Pkg. of 4)	00000000	Pkg.	0000
4" Circumference Speed Wheel	0000000	Each	00000
Reflective Tape Roll (5 ft. Lg. × 1/2" Wd.)	0000000	Each	00000

High-Accuracy Contact/Noncontact Tachometers

Accurate to within ±0.006% of reading. Switch these tachometers from contact to noncontact mode by attaching the included adapter. They come with a calibration certificate traceable to NIST that states they've passed a test for accuracy. All have a 1/4”-20 female threaded bushing for tripod mounting.

Choose tachometers with LCD for use in bright light.

Choose tachometers with LED for use in dimly lit areas.

Tips measure the rotational speed of shafts and other spinning objects. Tips for flat-end surfaces are often used with pulleys and circular saws. They have a concave surface to fit flush over bumps, such as screw heads. Tips for shafts with center hole are cone-shaped, so they’ll fit the inner diameter of different hole sizes.

Speed wheels measure the length and speed of conveyor belts, bolts of fabric, and material on spools. They have a grooved edge to fit over wire, cable, and cords.

6-99,999 rpm Measuring Range (±0.006% Accuracy)
Display Type	Includes	Max. Measuring Distance, ft.	Scale	Batteries Included		Each
LCD	6" Speed Wheel, 1/4"-20 Female Threaded Bushing, 7" Reflective Tape, Contact to Noncontact Mode Adapter, Measuring Tip for Flat-End Surfaces, Measuring Tip for Shafts with Center Hole	20	ft., ft./min, in., in./min, m, m/min, rpm, yd., yd./min	Yes	00000000	0000000
LCD	12" Speed Wheel, 1/4"-20 Female Threaded Bushing, 7" Reflective Tape, Contact to Noncontact Mode Adapter, Measuring Tip for Flat-End Surfaces, Measuring Tip for Shafts with Center Hole	20	ft., ft./min, in., in./min, m, m/min, rpm, yd., yd./min	Yes	00000000	000000
LED	6" Speed Wheel, 1/4"-20 Female Threaded Bushing, 7" Reflective Tape, Contact to Noncontact Mode Adapter, Measuring Tip for Flat-End Surfaces, Measuring Tip for Shafts with Center Hole	20	ft., ft./min, in., in./min, m, m/min, rpm, yd., yd./min	Yes	00000000	000000
LED	12" Speed Wheel, 1/4"-20 Female Threaded Bushing, 7" Reflective Tape, Contact to Noncontact Mode Adapter, Measuring Tip for Flat-End Surfaces, Measuring Tip for Shafts with Center Hole	20	ft., ft./min, in., in./min, m, m/min, rpm, yd., yd./min	Yes	00000000	000000

1/2" Dia. Measuring Tip for Flat-End Surfaces	00000000	Each	00000
Reflective Tape Roll (5 ft. Lg. × 1/2" Wd.)	0000000	Each	00000
1/2" Dia. Measuring Tip for Shafts with Center Hole	00000000	Each	0000
1 1/4" Dia. Measuring Tip for Shafts with Center Hole	00000000	Each	00000
6" Circumference Smooth Speed Wheel	00000000	Each	00000
12" Circumference Smooth Speed Wheel	00000000	Each	00000
Replacement AA Batteries (Pkg. of 4)	00000000	Pkg.	0000
Reflective 1/2" Sq. Tape Tabs (Sheet of 35)	00000000	Each	0000
3/4" Dia. Measuring Tip for Shafts with Center Hole	00000000	Each	00000
Optional Carrying Case	00000000	Each	00000
Replacement Contact Mode Adapter	00000000	Each	00000
3/4" Dia. Measuring Tip for Flat-End Surfaces	00000000	Each	00000
3 1/2" Extension Shaft	00000000	Each	00000
6" Circumference Grooved Speed Wheel	00000000	Each	00000

Speed-Monitoring Switches

Set to a specific speed to detect unwanted machinery slowdown that can cause damage and downtime. Applications include drive trains, power-driven components, and conveyors. Switches are UL listed for Class I, Divisions 1 and 2, Groups C and D; and Class II, Divisions 1 and 2, Groups E, F, and G. They have an explosion-proof housing and are also rated NEMA 4X for washdown and corrosion protection.

	Switching		Input			Conduit			Mounting Slot
Activation Point Range, rpm	Current, A	Voltage	Voltage	Frequency, Hz	No. of Terminals	Trade Size	Thread Type	Gender	Lg.	Wd.	No. of	Mounting Fasteners Included	Environmental Rating		Each
1 Off (Normally Open), 1 On (Normally Closed) Starting Switch Position
SPDT
5-100	5	120V AC	120V AC	60	5	1	NPT	Female	1 1/4"	0.32"	2	Yes	NEC Class I Divisions 1, 2 Groups C, D NEC Class II Divisions 1, 2 Groups E, F, G NEMA 4X	0000000	0000000