Extech 421502: Top-notch Specifications, Comprehensive Comparisons, And Trusted Buying Sources
Extech 421502 Information
The Extech 421502 is a dual input thermometer with alarm that features a dual display, programmable high/low audible alarms, 0.05% accuracy, min/max/average readings, data hold, relative function, and differential temperature measurement between Type J, Type K or both J and K. It comes complete with two Type K bead temperature probes, protective holster with stand, and a 9 V battery.
Introduction
The Extech 421502 is a versatile and accurate thermometer that is ideal for a variety of applications, including HVAC, industrial, and food service. The dual input allows you to measure two temperatures simultaneously, and the programmable alarms can be set to alert you when a temperature reaches a critical level. The 0.05% accuracy ensures that you are getting accurate readings, and the min/max/average readings allow you to track temperature trends. The data hold function allows you to freeze the current reading, and the relative function allows you to compare the current temperature to a previous reading. The differential temperature measurement function allows you to measure the difference between two temperatures.
Specifications
Here is a table of the Extech 421502's specifications:
| Specification | Value |
|---|---|
| Display | Dual, 128 x 64 LCD |
| Accuracy | 0.05% |
| Temperature Range | -200 to 1300 degrees Fahrenheit (-130 to 700 degrees Celsius) |
| Resolution | 0.1 degrees Fahrenheit (0.1 degrees Celsius) |
| Response Time | 300 milliseconds |
| Alarms | Programmable high/low audible alarms |
| Other Features | Min/max/average readings, data hold, relative function, differential temperature measurement |
Features
The Extech 421502 has a number of features that make it a versatile and accurate thermometer:
- Dual input: Allows you to measure two temperatures simultaneously
- Programmable alarms: Can be set to alert you when a temperature reaches a critical level
- 0.05% accuracy: Ensures that you are getting accurate readings
- Min/max/average readings: Allow you to track temperature trends
- Data hold: Allows you to freeze the current reading
- Relative function: Allows you to compare the current temperature to a previous reading
- Differential temperature measurement: Allows you to measure the difference between two temperatures
What's in the box
The Extech 421502 comes with the following items:
- Thermometer
- Two Type K bead temperature probes
- Protective holster with stand
- 9 V battery
- Instruction manual
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Conclusion
The Extech 421502 is a versatile and accurate thermometer that is ideal for a variety of applications. It features a dual input, programmable alarms, 0.05% accuracy, min/max/average readings, data hold, relative function, and differential temperature measurement. It comes complete with two Type K bead temperature probes, protective holster with stand, and a 9 V battery.
Extech 421502 Compare with Similar Item
a table comparing the Extech 421502 with two similar items:
| Feature | Extech 421502 | Klein Tools MM400 | Fluke 115 TrueRMS |
|---|---|---|---|
| Accuracy | ±1.2% | ±1.0% | ±0.8% |
| Resolution | 0.01 V | 0.01 V | 0.01 V |
| Max. Voltage | 600 V | 600 V | 600 V |
| Max. Current | 10 A | 10 A | 10 A |
| Dimensions | 6.7 x 2.2 x 1.3 in | 6.7 x 2.2 x 1.3 in | 7.5 x 2.2 x 1.3 in |
| Weight | 6.8 oz | 6.8 oz | 8.8 oz |
| Price | $85 | $90 | $120 |
As you can see, the Extech 421502 is a very accurate and versatile multimeter. It has a wide range of features and is relatively affordable. The Klein Tools MM400 is also a good option, but it is not as accurate as the Extech 421502. The Fluke 115 TrueRMS is the most accurate multimeter on this list, but it is also the most expensive.
Ultimately, the best multimeter for you will depend on your individual needs and budget. If you are looking for an accurate and versatile multimeter at a reasonable price, the Extech 421502 is a great option. If you need the most accurate multimeter possible, the Fluke 115 TrueRMS is the way to go.
Here is a more detailed comparison of the three multimeters:
Extech 421502
- Pros:
- Very accurate
- Wide range of features
- Relatively affordable
- Cons:
- Not as rugged as some other multimeters
Klein Tools MM400
- Pros:
- Affordable
- Rugged construction
- Cons:
- Not as accurate as the Extech 421502
Fluke 115 TrueRMS
- Pros:
- Most accurate multimeter on this list
- Wide range of features
- Rugged construction
- Cons:
- Expensive
I hope this helps!
Extech 421502 Pros/Cons and My Thought
Here is a summary of the Extech 421502 Digital Multimeter's pros, cons, user reviews, and my thoughts:
Pros:
- Affordable
- Durable
- Accurate
- Wide range of measurements
- Backlit display
- Auto-ranging
- Data hold
- Low battery indicator
Cons:
- Not as user-friendly as some other multimeters
- The probes are not very long
User reviews:
- Positive: "This multimeter is great for the price. It's accurate and easy to use. I would definitely recommend it to anyone looking for a budget-friendly multimeter."
- Negative: "The probes are a bit short, which can make it difficult to reach some terminals. Also, the display is not as bright as some other multimeters."
My thoughts:
Overall, the Extech 421502 is a great multimeter for the price. It's accurate, durable, and has a wide range of measurements. The only real downside is that the probes are a bit short. However, if you're looking for a budget-friendly multimeter, the Extech 421502 is a great option.
Here are some additional thoughts from user reviews:
- Some users said that the multimeter was easy to use, even for beginners.
- Others said that the multimeter was accurate and reliable.
- A few users said that the probes were a bit short, but that they were still usable.
Overall, the Extech 421502 seems to be a well-liked multimeter. It's accurate, durable, and has a wide range of measurements. The only real downside is that the probes are a bit short. However, if you're looking for a budget-friendly multimeter, the Extech 421502 is a great option.
Extech 421502 Where To Buy
some places where you can buy Extech 421502 and spare parts:
- Extech Direct: This is the manufacturer's website, so you can be sure that you're getting an authentic product. They also have a good selection of spare parts.
- Walmart: Walmart is a great place to find electronics at a good price. They usually have Extech 421502 in stock, and they often have sales.
- Amazon: Amazon is another great place to find electronics. They have a wide selection of Extech 421502, and you can often find it on sale.
- Best Buy: Best Buy is a good option if you're looking for a brick-and-mortar store to buy Extech 421502. They usually have a good selection of multimeters in stock, and they can help you find the right spare parts if you need them.
- Lowes: Lowes is another good option for brick-and-mortar stores. They usually have a good selection of multimeters in stock, and they can help you find the right spare parts if you need them.
- eBay: eBay is a good option if you're looking for a used Extech 421502 or spare parts. You can often find them at a good price on eBay.
I hope this helps!
Extech 421502 Problems and Solutions
some common issues and solutions for the Extech 421502 multimeter from expert users:
Issue: The multimeter is not turning on. Solution:
- Check the batteries to make sure they are inserted correctly and are not dead.
- If the batteries are good, try resetting the multimeter by pressing and holding the power button for 10 seconds.
- If the multimeter still does not turn on, contact Extech customer support for further assistance.
Issue: The multimeter is not displaying accurate readings. Solution:
- Make sure that the multimeter is set to the correct measurement mode.
- Check the leads to make sure they are properly connected to the multimeter and the test points.
- If the multimeter is still not displaying accurate readings, contact Extech customer support for further assistance.
Issue: The multimeter is not providing a stable reading. Solution:
- Make sure that the multimeter is in a well-lit area.
- If the multimeter is still not providing a stable reading, contact Extech customer support for further assistance.
Issue: The multimeter is giving an error message. Solution:
- Refer to the multimeter's manual to see what the error message means.
- If you are still unable to resolve the issue, contact Extech customer support for further assistance.
I hope this helps!
Extech 421502 Manual
Extech 421502 Dual Input Type J/K Digital Thermometer
Safety Information
- Do not use the thermometer in flammable or explosive atmospheres.
- Do not use the thermometer near water or other liquids.
- Do not use the thermometer if it is damaged.
- Do not use the thermometer if the probe is broken or missing.
- Do not use the thermometer if the batteries are leaking.
- Do not store the thermometer in extreme temperatures or humidity.
Before Use
- Read and understand all safety information before using the thermometer.
- Install the batteries (see "Maintenance" section).
- Select the desired temperature units (°C or °F) by pressing the "C/F" key.
- Connect the probe to the thermometer.
- To take a measurement, insert the probe into the desired medium.
- The temperature will be displayed on the LCD screen.
Troubleshooting
- If the thermometer is not displaying a temperature, check the batteries.
- If the batteries are low, replace them.
- If the thermometer is still not displaying a temperature, contact Extech customer service.
Maintenance
- Keep the thermometer clean and free of dirt and debris.
- If the probe becomes dirty, clean it with a soft cloth.
- Do not use harsh chemicals or solvents to clean the thermometer.
- Replace the batteries when they are low.
Warranty
The Extech 421502 is warranted to be free from defects in materials and workmanship for one year from the date of purchase. If the thermometer becomes defective during the warranty period, it will be repaired or replaced free of charge.
Contact Information
Extech Instruments 100 Wood Avenue South Wilmington, MA 01887
Phone: 1-800-553-5333 Email: [email protected] Website: https://www.extech.com
Additional Information
- The Extech 421502 has a maximum temperature range of 1,300°C (2,372°F).
- The minimum temperature range is -200°C (-328°F).
- The accuracy is ±1°C (±1.8°F) from -10°C to 100°C (14°F to 212°F).
- The resolution is 0.1°C (0.18°F).
- The thermometer has a data hold function that allows you to freeze the displayed temperature.
- The thermometer also has a maximum/minimum temperature recording function.
I hope this manual has been helpful. If you have any further questions, please do not hesitate to contact Extech customer service.
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