DEV Community: sam

The best and best-selling RCD tester and phase meter from Fluke

sam — Mon, 23 Feb 2026 10:32:34 +0000

Details of the best Fluke models
Fluke ST240+ RCD Socket Tester

One of the most popular simple RCD testers with a light indicator and beeper for proper socket and RCD function testing. Suitable for building technicians and electricians.

Fluke T5-1000 Electrical Tester

Multifunctional phase meter and voltage/continuity tester for detecting the presence of voltage in AC/DC wires and equipment.

Fluke 1664FC Multifunction Installation Tester

Professional and comprehensive tester for testing RCD, insulation resistance, loop and other electrical installation tests (with reporting and connection to the phone).

Fluke 1674FC Multifunction Installation Tester

A more professional version with more complete features for real electricians and engineers.

Fluke T150 Voltage/Continuity Tester and Fluke T110 Voltage & Continuity Tester

Simple voltage and continuity testers that are fully functional for detecting phase and open/closed circuit.

Fluke 9040 Phase Rotation Indicator

Specialized tool for checking the direction of phase rotation in three-phase systems.

Fluke 1674 FC Multifunction Tester & 117 Multimeter

A professional combination package that offers a tester, multimeter and advanced features in one device.

The Fluke brand can be considered one of the most trusted names in the field of electrical measurement tools; its products have high accuracy, durability and industrial support and are the first choice of many professional electricians around the world.

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What is a tachometer?

sam — Sun, 15 Feb 2026 09:33:59 +0000

What is a tachometer?
A tachometer is a device used to measure the speed of rotation of rotating objects. This speed is usually displayed in revolutions per minute (RPM). Using a tachometer, the operating speed of electric motors, combustion engines, fans, pumps, shafts, and even conveyor belts can be accurately measured.
Tachometers are produced in various contact and non-contact (laser or optical) models, and depending on the type of application, choosing the right model is very important.

Why is it important to use a tachometer?
Accurately measuring the rotational speed of equipment has several benefits, the most important of which are:
Preventing premature engine and component failure
Increasing operator safety
Optimizing equipment performance
Reducing energy consumption
Diagnosing mechanical problems before serious failure
For this reason, the tachometer is considered one of the key tools in preventive maintenance (PM).
Applications of tachometers in various industries
🔸 Use of tachometers in the electrical and electromotor industry
Tachometers are used to check the speed of electric motors, fans, and generators and play an important role in troubleshooting.
🔸 Tachometers in mechanical and manufacturing industries
In production lines, controlling the speed of shafts and conveyor belts is of great importance, which is easily done with a tachometer.
🔸 Use of tachometers in automotive
In repair shops, tachometers are used to check the speed of engines, alternators, and rotating parts of vehicles.
🔸 Use in ventilation and HVAC systems
Controlling the speed of fans and blowers is one of the important applications of tachometers in this field.

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Applications of distance meters in various industries

sam — Tue, 03 Feb 2026 07:52:19 +0000

🔸 Use of tachometers in the electrical and electromotor industry
Tachometers are used to check the speed of electric motors, fans, and generators, and play an important role in troubleshooting.
🔸 Tachometers in mechanical and manufacturing industries
In production lines, controlling the speed of shafts and conveyor belts is of great importance, which is easily done with a tachometer.

🔸 Use of tachometers in automotive
In repair shops, tachometers are used to check the speed of engines, alternators, and rotating parts of vehicles.
🔸 Use in ventilation and HVAC systems
Controlling the speed of fans and blowers is one of the important applications of tachometers in this field.
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The difference between analog and digital multimeters

sam — Wed, 07 Jan 2026 10:27:13 +0000

Both digital and analog multimeters have their uses. If you want accuracy, speed, and extensive features, a digital multimeter is a better choice. If you're looking to see instantaneous changes or a simple, inexpensive tool, an analog multimeter is still useful. Brands like Fluke, Hioki, and UNI-T each offer a variety of options to suit your needs and budget.

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Best Paint Thickness Gauge

sam — Sun, 21 Dec 2025 11:33:17 +0000

Types of Paint Thickness Gauges
Paint thickness gauges come in different types depending on the surface to be measured, which we will examine below:

Electromagnetic paint thickness gauge
The automotive paint thickness gauge is magnetic and this type of paint thickness gauge is used for metal (iron) surfaces and a probe is used to eliminate the user's hand pressure to increase the accuracy of the measurement and a digital display is used to display the measurement result.

Vortex paint thickness gauge
This type of paint thickness gauge is used to measure and test the paint thickness of non-ferrous but conductive and metallic surfaces such as aluminum. This type of paint thickness gauge creates a magnetic field on the surface and displays the result on the display.

Ultrasonic paint thickness gauge
This type of paint thickness gauge is for non-metallic surfaces and the ultrasonic pulse is introduced to the desired non-metallic surface and its reflection is actually the result of measuring the surface thickness and is displayed on the display.

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Good and cheap multimeter

sam — Sat, 13 Dec 2025 09:30:59 +0000

A multimeter is a multi-purpose industrial tool in all electrical and electronics industries and is capable of measuring the parameters of alternating and direct current (AC/DC), alternating and direct voltage (AC/DC), electrical resistance, capacitance, temperature, inductance, frequency, and duty cycle.

multimeter

Buy a digital thermometer for home and industrial use

sam — Mon, 08 Dec 2025 12:29:15 +0000

Digital thermometers are essential tools in homes, workplaces, light and heavy industries, laboratories, and technical projects. With the advancement of measurement equipment, today's digital thermometers offer features such as non-contact measurement, high response speed, high accuracy, data recording and transmission, mobile connectivity, and excellent resistance to various environmental conditions.

This article is a comprehensive and complete guide to buying a digital thermometer for home and industrial use, which has been compiled based on user needs and introducing the best brands in the Iranian market, including Fluke, Hioki, Benetech, Wintact, and UNI-T.
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What is the difference between a clamp ammeter and a multimeter

sam — Sun, 07 Dec 2025 11:30:42 +0000

Clamp ammeters are a great option for measuring high currents and industrial work.

A multimeter is more accurate and is better suited for electronic and circuit repair.

The best brands on the market include Fluke, Hioki, and UNI-T.

If you are a professional, a combination of both tools will be the best choice.
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The best mobile thermal camera

sam — Mon, 01 Dec 2025 07:37:03 +0000

A thermal camera is a tool for detecting the temperature of a device or environment that detects and measures the amount of heat in the device or environment by imaging and using infrared.
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