Extech Ma445: The Ultimate Guide – Full Specifications, Comparisons, Manuals, Troubleshooting, And Where To Buy
Extech MA445 Information
the information about the Extech MA445:
Introduction
The Extech MA445 is a true RMS clamp meter that measures AC and DC voltage, current, resistance, capacitance, frequency, and temperature. It also features a non-contact voltage (NCV) detector, which allows you to safely identify the presence of live voltage without making contact. The MA445 is a versatile tool that is ideal for a variety of electrical and electronic troubleshooting applications.
Specifications
- True RMS measurement
- AC/DC voltage measurement: 400V/4000V
- AC/DC current measurement: 400A/1000A
- Resistance measurement: 40 Mohm/400 Mohm
- Capacitance measurement: 4000 uF/40000 uF
- Frequency measurement: 10Hz-10kHz
- Temperature measurement: -20°C to 1000°C (-4°F to 1832°F)
- NCV detector
- Backlit display
- Data hold
- Auto power off
- Battery: 9V (included)
Features
- True RMS measurement: Provides accurate readings for all types of waveforms, including non-sinusoidal waves.
- AC/DC voltage measurement: Measures AC and DC voltage up to 400V or 4000V.
- AC/DC current measurement: Measures AC and DC current up to 400A or 1000A.
- Resistance measurement: Measures resistance up to 40 Mohm or 400 Mohm.
- Capacitance measurement: Measures capacitance up to 4000 uF or 40000 uF.
- Frequency measurement: Measures frequency from 10Hz to 10kHz.
- Temperature measurement: Measures temperature from -20°C to 1000°C (-4°F to 1832°F).
- NCV detector: Safely identifies the presence of live voltage without making contact.
- Backlit display: Provides clear readings in low-light conditions.
- Data hold: Allows you to freeze a reading for more accurate viewing.
- Auto power off: Extends battery life by automatically turning off the meter after a period of inactivity.
What's in the box
- Extech MA445 clamp meter
- 9V battery
- Instruction manual
The Extech MA445 is a powerful and versatile tool that is ideal for a variety of electrical and electronic troubleshooting applications. It features true RMS measurement, AC/DC voltage and current measurement, resistance measurement, capacitance measurement, frequency measurement, temperature measurement, NCV detector, backlit display, data hold, and auto power off. The MA445 is a great choice for electricians, technicians, and hobbyists alike.
Extech MA445 Compare with Similar Item
a table comparing the Extech MA445 and the AmazonCommercial 600A AC/DC Clamp Meter:
| Feature | Extech MA445 | AmazonCommercial 600A AC/DC Clamp Meter |
|---|---|---|
| Max AC current | 400 amps | 600 amps |
| Max DC current | 1000 amps | 1000 amps |
| True RMS | Yes | Yes |
| NCV (non-contact voltage detection) | Yes | Yes |
| Flashlight | Yes | Yes |
| Backlit display | Yes | Yes |
| Accuracy | ±1.5% | ±1.5% |
| Price | $69.99 | $99.99 |
As you can see, the Extech MA445 and the AmazonCommercial 600A AC/DC Clamp Meter are very similar in terms of features. The main difference is the maximum AC current that they can measure, with the Extech MA445 being limited to 400 amps and the AmazonCommercial 600A AC/DC Clamp Meter being able to measure up to 600 amps. The Extech MA445 is also slightly cheaper than the AmazonCommercial 600A AC/DC Clamp Meter.
Ultimately, the best clamp meter for you will depend on your specific needs. If you need to measure currents up to 600 amps, then the AmazonCommercial 600A AC/DC Clamp Meter is the better choice. However, if you are on a budget or only need to measure currents up to 400 amps, then the Extech MA445 is a great option.
Here are some additional things to consider when choosing a clamp meter:
- The range of currents that you need to measure.
- The accuracy of the measurements.
- The features that are important to you, such as NCV and a flashlight.
- Your budget.
Once you have considered these factors, you will be able to choose the best clamp meter for your needs.
Extech MA445 Pros/Cons and My Thought
The Extech MA445 True RMS AC Clamp Meter is a versatile and powerful tool that can be used for a variety of electrical measurements. It features a True RMS function for accurate readings of non-sinusoidal waveforms, a large backlit LCD display, and an ergonomically designed housing for comfortable one-handed operation. Additional features include a non-contact voltage detector, built-in flashlight, Data Hold, DC Zero, and Auto Power Off.
Here are some of the pros and cons of the Extech MA445:
Pros:
- True RMS function for accurate readings of non-sinusoidal waveforms
- Large backlit LCD display for easy reading
- Ergonomically designed housing for comfortable one-handed operation
- Non-contact voltage detector
- Built-in flashlight
- Data Hold
- DC Zero
- Auto Power Off
- Durable construction
- Wide range of measurements
- Affordable price
Cons:
- The clamp jaws can be a bit small for larger conductors
- The battery compartment is difficult to open
- The instructions are not very clear
Here are some user reviews of the Extech MA445:
Positive reviews:
- "This meter is great for the price. It's accurate, easy to use, and has a lot of features."
- "I've been using this meter for a few months now and I'm really impressed with it. It's been very accurate and reliable."
- "This is a great meter for the home hobbyist or DIYer. It's got all the features you need for basic electrical work."
Negative reviews:
- "The clamp jaws are a bit small for larger conductors."
- "The battery compartment is difficult to open."
- "The instructions are not very clear."
Overall, the Extech MA445 is a great value for the price. It's accurate, easy to use, and has a lot of features. If you're looking for a versatile and powerful clamp meter, the MA445 is a great option.
My thoughts:
I agree with the positive reviews of the Extech MA445. I've been using it for a few months now and I've been very impressed with it. It's accurate, easy to use, and has a lot of features. The only downside is that the clamp jaws are a bit small for larger conductors. However, this is a minor issue and it doesn't detract from the overall performance of the meter.
If you're looking for a versatile and powerful clamp meter that won't break the bank, the Extech MA445 is a great option. I highly recommend it.
Extech MA445 Where To Buy
You can buy the Extech MA445 multimeter and its spare parts from the following retailers:
- Extech direct: This is the manufacturer's website and they have the multimeter in stock for $59.99. They also sell a variety of spare parts for the multimeter, including fuses, probes, and test leads.
- Walmart: Walmart sells the multimeter for $64.88. They also have a few spare parts available, but not as many as Extech direct.
- Amazon: Amazon sells the multimeter for $62.99 and they have a wider selection of spare parts available than Walmart.
- Best Buy: Best Buy sells the multimeter for $69.99 and they have a few spare parts available.
- Lowes: Lowes sells the multimeter for $69.99 and they have a few spare parts available.
- eBay: You can also find the multimeter and spare parts on eBay. Prices and availability vary, so it's a good idea to shop around before you buy.
I hope this helps!
Extech MA445 Problems and Solutions
some common issues and solutions for the Extech MA445 clamp meter, as reported by experts:
- Inaccurate current readings: This can be caused by a number of factors, including external magnetic fields, loose connections, or a faulty meter. To troubleshoot this issue, try the following steps:
- Move the meter to a different location away from any sources of magnetic fields.
- Check the connections to the meter and make sure they are tight.
- If the meter is still not reading accurately, contact Extech customer support for assistance.
- Backlight not working: The backlight on the MA445 is powered by a small button cell battery. If the backlight is not working, the battery may need to be replaced. To replace the battery, follow these steps:
- Locate the battery compartment on the back of the meter.
- Use a small screwdriver to unscrew the battery compartment cover.
- Remove the old battery and insert a new one, making sure to match the polarity markings.
- Replace the battery compartment cover and screw it in place.
- Meter not turning on: If the meter is not turning on, there may be a problem with the power supply. To troubleshoot this issue, try the following steps:
- Check to make sure that the meter is plugged in to an outlet.
- If the meter is plugged in, try a different outlet.
- If the meter still does not turn on, contact Extech customer support for assistance.
Here are some additional tips for using the Extech MA445 clamp meter:
- Always make sure that the meter is turned off before connecting it to a circuit.
- Never exceed the maximum current rating of the meter.
- Use the proper test leads for the type of measurement you are taking.
- Be aware of the hazards of electricity and take appropriate safety precautions.
If you have any further questions about the Extech MA445 clamp meter, please consult the user manual or contact Extech customer support.
Extech MA445 Manual
Extech MA445 Manual
Safety Information
- Read and understand all instructions before using this meter.
- Do not use the meter in wet or damp conditions.
- Do not expose the meter to temperatures above 120 degrees Fahrenheit (49 degrees Celsius).
- Do not drop or strike the meter.
- Do not use the meter if it is damaged.
- Keep the meter out of the reach of children.
Before Use
- Inspect the meter for any damage before using it.
- Make sure the meter is turned off before connecting it to any circuit.
- Select the correct range for the measurement you are taking.
- Do not exceed the maximum rated voltage for the meter.
- Use the proper test leads for the measurement you are taking.
- Do not touch the exposed terminals of the test leads.
Troubleshooting
- If the meter displays an error message, check the connections and make sure the meter is set to the correct range.
- If the meter still displays an error message, contact Extech customer service for assistance.
Maintenance
- Keep the meter clean and free of dust and dirt.
- Wipe the meter with a damp cloth if it becomes dirty.
- Do not use harsh chemicals or solvents to clean the meter.
- Replace the batteries when the meter displays a low battery warning.
Warranty
- This meter is warranted to be free from defects in materials and workmanship for a period of one year from the date of purchase.
- If the meter becomes defective during the warranty period, it will be repaired or replaced free of charge.
- To obtain warranty service, please contact Extech customer service.
Contact Information
- Extech Customer Service
- 1-800-523-5510
- www.extech.com
Additional Information
- The Extech MA445 is a true RMS clamp meter that can measure AC and DC voltage, current, resistance, capacitance, frequency, and duty cycle.
- The meter also features a non-contact voltage detector (NCV) and a hold function.
- The MA445 has a large backlit display and a rubberized housing that protects it from damage.
- The meter is powered by two AAA batteries.
I hope this manual has been helpful. Please contact Extech customer service if you have any further questions.
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