Extech Ma445: Everything You Need To Know – Specifications, Comparisons, Manuals, And Troubleshooting
Extech MA445 Information
The Extech MA445 is a true RMS clamp meter that measures AC and DC current, resistance, capacitance, frequency, duty cycle, and temperature. It has a large, backlit LCD display and an ergonomic housing for comfortable one-handed operation. The MA445 also features a non-contact voltage detector (NCV), a built-in flashlight, and data hold.
Introduction
The Extech MA445 is a versatile and powerful clamp meter that is ideal for a wide range of electrical testing applications. It is perfect for electricians, technicians, and hobbyists who need a reliable and accurate tool for measuring electrical current, resistance, capacitance, frequency, and temperature.
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Full Specifications
| Feature | Value |
|---|---|
| Measuring Range | AC Current: 400A |
| DC Current: 400A | |
| Resistance: 40 Mohm | |
| Capacitance: 4000uF | |
| Frequency: 99.99Hz to 9999Hz | |
| Duty Cycle: 0.1% to 99.9% | |
| Temperature: -20°C to 1000°C (-4°F to 1832°F) | |
| Accuracy | AC Current: ±1.5% |
| DC Current: ±1.0% | |
| Resistance: ±1.0% | |
| Capacitance: ±3.0% | |
| Frequency: ±0.1% | |
| Duty Cycle: ±0.5% | |
| Display | Large, backlit LCD |
| Housing | Ergonomic, one-handed design |
| Features | True RMS, NCV, built-in flashlight, data hold |
| Power | 9V battery (included) |
| Dimensions | 165 x 70 x 35 mm |
| Weight | 230 g |
Features
- True RMS: The MA445 measures true RMS values, which ensures accurate readings of non-sinusoidal waveforms.
- NCV: The NCV feature allows you to safely detect the presence of voltage without making contact with the circuit.
- Built-in flashlight: The built-in flashlight illuminates your work area, making it easier to take measurements in low-light conditions.
- Data hold: The data hold feature allows you to freeze the displayed measurement for easier viewing.
What's in the box
- Extech MA445 clamp meter
- 9V battery
- Instruction manual
The Extech MA445 is a powerful and versatile clamp meter that is perfect for a wide range of electrical testing applications. It is accurate, easy to use, and comes with a variety of features that make it a valuable tool for any electrician, technician, or hobbyist.
Extech MA445 Compare with Similar Item
a comparison table of the Extech MA445 and some similar items:
| Feature | Extech MA445 | Klein Tools DT830B | Fluke 117 |
|---|---|---|---|
| Price | $59.99 | $49.99 | $69.99 |
| Accuracy | ±2% | ±1.5% | ±1% |
| Range | 200mV to 1000V AC/DC | 200mV to 1000V AC/DC | 200mV to 1000V AC/DC |
| Dimensions | 5.1 x 1.9 x 1.4 inches | 5.5 x 1.9 x 1.2 inches | 5.7 x 2.1 x 1.2 inches |
| Weight | 3.8 ounces | 4.2 ounces | 4.6 ounces |
| Features | True RMS, auto-ranging, data hold, min/max, backlight | True RMS, auto-ranging, data hold, min/max, backlight | True RMS, auto-ranging, data hold, min/max, backlight, diode test, continuity test |
As you can see, the Extech MA445 is the most affordable option, but it also has the least accurate range. The Klein Tools DT830B is a bit more expensive, but it has a more accurate range and a few additional features, such as a diode test and a continuity test. The Fluke 117 is the most expensive option, but it is also the most accurate and has the most features.
Ultimately, the best multimeter for you will depend on your needs and budget. If you are looking for an accurate and feature-rich multimeter, the Fluke 117 is a great option. If you are on a budget, the Extech MA445 is a good choice. And if you need a multimeter with some additional features, the Klein Tools DT830B is a good option.
Here is a summary of the pros and cons of each multimeter:
Extech MA445
Pros:
- Affordable
- True RMS
- Auto-ranging
- Data hold
- Min/max
- Backlight
Cons:
- Least accurate range
Klein Tools DT830B
Pros:
- More accurate range than Extech MA445
- Additional features: diode test, continuity test
- True RMS
- Auto-ranging
- Data hold
- Min/max
- Backlight
Cons:
- More expensive than Extech MA445
Fluke 117
Pros:
- Most accurate range
- Most features: true RMS, auto-ranging, data hold, min/max, backlight, diode test, continuity test
Cons:
- Most expensive option
I hope this comparison table is helpful!
Extech MA445 Where To Buy
Sure. Here are some places where you can buy the Extech MA445 and spare parts:
- Extech direct: This is the manufacturer's website, and they usually have the lowest prices on Extech products. You can also find spare parts here.
- Walmart: Walmart is a good option if you want to buy the Extech MA445 in person. They usually have a good selection of Extech products, and their prices are competitive.
- Amazon: Amazon is another good option for buying the Extech MA445. They have a wide selection of Extech products, and their prices are often lower than other retailers.
- Best Buy: Best Buy is a good option if you want to buy the Extech MA445 from a brick-and-mortar store. They usually have a good selection of Extech products, and their prices are competitive.
- Lowes: Lowes is another good option for buying the Extech MA445 from a brick-and-mortar store. They usually have a good selection of Extech products, and their prices are competitive.
- eBay: eBay is a good option if you're looking for a used or refurbished Extech MA445. You can often find good deals on eBay, but be sure to inspect the product carefully before you buy it.
I hope this helps!
Extech MA445 Problems and Solutions
some common issues and problems with the Extech MA445 multimeter and their solutions:
- The multimeter does not turn on. Make sure that the multimeter is plugged in and that the power switch is turned on. If the multimeter still does not turn on, try replacing the batteries.
- The multimeter displays an error message. The error message will usually tell you what the problem is. For example, if the error message says "OV", the multimeter is overvolted. To fix this, turn down the voltage range.
- The multimeter's readings are inaccurate. Make sure that the probes are properly inserted into the multimeter's jacks. If the readings are still inaccurate, try calibrating the multimeter.
- The multimeter's display is dim. Increase the multimeter's backlight. If the backlight is already at its maximum brightness, try replacing the batteries.
- The multimeter's probes are damaged. If the probes are damaged, they will need to be replaced.
Here are some step-by-step instructions on how to troubleshoot and fix some of the most common problems with the Extech MA445 multimeter:
- The multimeter does not turn on.
- Make sure that the multimeter is plugged in.
- Make sure that the power switch is turned on.
- Replace the batteries.
- The multimeter displays an error message.
- Read the error message to determine what the problem is.
- Fix the problem according to the error message.
- The multimeter's readings are inaccurate.
- Make sure that the probes are properly inserted into the multimeter's jacks.
- Calibrate the multimeter.
- The multimeter's display is dim.
- Increase the multimeter's backlight.
- Replace the batteries.
- The multimeter's probes are damaged.
- Replace the probes.
If you have tried all of the above solutions and you are still having problems with your Extech MA445 multimeter, you may need to contact Extech customer support for assistance.
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