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Equip your team with precision handheld diagnostic tools for stop-motion inspection and RPM measurement.

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Motor speed controls
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Blog Featured 7 - Control Resources
One Board, 70+ Integrations: How Heatco and CRI Consolidated Five+ Controls into One

One Board, 70+ Integrations: How Heatco and CRI Consolidated Five+ Controls into One

Customer Eric Bruton Company Heatco Industry HVAC (Gas-Fired Heating) Application…
Blog Featured 5 - Control Resources
CRI Design Guide: Custom Fan Speed Controls & Alarm Integration

CRI Design Guide: Custom Fan Speed Controls & Alarm Integration

Control Resources specializes in providing cost-effective, unique fan controllers and…
Blog Featured 13 - Control Resources
CRI Design Guide: Fractional HP VFDs

CRI Design Guide: Fractional HP VFDs

Off-the-Shelf VFD for Immediate Implementation At Control Resources, we understand…
Blog Featured 7 - Control Resources
CRI Design Guide: Brushless Motor Controllers

CRI Design Guide: Brushless Motor Controllers

Custom Brushless DC Motor Controllers You have this great application for…
Blog Featured 16 - Control Resources
Temperature Conversion Chart

Temperature Conversion Chart

Formulas: °C= °F-32/1.8 ; °F=°Cx1.8+32   °C °F 20 68…
Blog Featured 15 - Control Resources
CRI SmartFan® Applications

CRI SmartFan® Applications

SmartFan® Fan Speed Control Benefits Benefits of using SmartFan® fan speed control…
Blog Featured 19 - Control Resources
SmartFan® Installation Tips

SmartFan® Installation Tips

Positioning the Sensor or Sensors   Temperature For applications with…
Blog Featured 4 - Control Resources
I2C Communications Tips

I2C Communications Tips

Advantages of I2C Communication for Fan Speed Control in Telecom…
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Device Cooling Design Tips

Device Cooling Design Tips

System Design Considerations   Air Flow, Distribution and System Pressure…
Blog Featured 8 - Control Resources
Thermal Design for ATCA Systems: Compliance, Interfaces, and Fan Tray Architecture

Thermal Design for ATCA Systems: Compliance, Interfaces, and Fan Tray Architecture

Click to download a PDF of this Article.   AdvancedTCA,…
Blog Featured 20 - Control Resources
SmartFan Integration: The Case for Adaptive Cooling

SmartFan Integration: The Case for Adaptive Cooling

What is Adaptive Cooling using SmartFan Speed Control?  Operating a…
Blog Featured 6 - Control Resources
AC Motor Compatibility

AC Motor Compatibility

Control Resources is an OEM (Original Equipment Manufacturer) supplier of…
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Custom AC Motor Control with Programmable Keypad in NEMA 4X Enclosure

Custom AC Motor Control with Programmable Keypad in NEMA 4X Enclosure

This client was looking for a custom electronic design and…
Blog Featured 2 - Control Resources
Fan Controller Technology and Motor Efficiency

Fan Controller Technology and Motor Efficiency

TRIAC Control, Variable Frequency Control, AC to DC Inverters &…
Blog Featured 11 - Control Resources
How CRI Reduced This Boiler Controller Cost by nearly 50% via Board Integration

How CRI Reduced This Boiler Controller Cost by nearly 50% via Board Integration

An existing customer was using our SmartFan Nimbus AC motor…
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Custom Electronic Design & Manufacturing: Advanced Irrigation Controller

Custom Electronic Design & Manufacturing: Advanced Irrigation Controller

Control Resources’ custom electronic design and manufacturing group utilized many…
Raphael 4040 Delivers Selective No-Mask Conformal Coating

Raphael 4040 Delivers Selective No-Mask Conformal Coating

Control Resources, a leading supplier of microprocessor-based and power electronics…
Control Resources Introduces LabStrobe II with Rechargeable Power Source

Control Resources Introduces LabStrobe II with Rechargeable Power Source

Control Resources Introduces LabStrobe II with Rechargeable Power Source:  Control…
Control Resources adds 4 New Sensor options

Control Resources adds 4 New Sensor options

Control Resources adds 4 New Sensor options:  CRI is pleased…
Control Resources Deemed Essential by Customers and the Commonwealth During Corona Pandemic

Control Resources Deemed Essential by Customers and the Commonwealth During Corona Pandemic

Control Resources Deemed Essential by Customers and the Commonwealth During…
SmartFan® Multi SD DC Fan Controller, NOW FIELD PROGRAMMABLE

SmartFan® Multi SD DC Fan Controller, NOW FIELD PROGRAMMABLE

Control Resources is pleased to announce that the Multi SD…
CRI Adds Nimbus II Triac AC Fan Speed Controller

CRI Adds Nimbus II Triac AC Fan Speed Controller

We are very excited to introduce the Nimbus II, our…
Cirrus 6 and Vortex DC Fan Control – CE Certification Update

Cirrus 6 and Vortex DC Fan Control – CE Certification Update

Control Resources Inc. is pleased to announce that all models…
CRI Introduces New Aurora Motor Controller

CRI Introduces New Aurora Motor Controller

To improve power efficiency, Control Resources announces the addition of…
CRI Introduces Universal Brushless DC Motor Controller

CRI Introduces Universal Brushless DC Motor Controller

Eddie-10 Datasheet is an off-the-shelf, customer programmable controller for 24-48VDC…
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A stroboscope measures speed by flashing light at an adjustable rate until rotating or reciprocating objects appear frozen. When the flash frequency matches the rotation speed of the object, you can read the RPM directly from the strobe setting.

They use the same basic principle, but a stroboscope is a precision measurement instrument, not a lighting effect. A stroboscope lets you control flash frequency with accuracy and read the result as a measurable value while consumer strobe lights are designed for visual effects.

A tachometer measures rotational speed through direct contact or a reflected laser beam and gives you a number. A stroboscope goes further: it lets you visually inspect a rotating component while it’s in motion. You can see surface defects, check belt or blade alignment, and observe mechanical behavior in real time, at speed.