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 high 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 9V battery.

Introduction

The Extech 421502 is a versatile and accurate thermometer that is ideal for a variety of applications, including HVAC, manufacturing, and foodservice. It features a dual display that allows you to view two different temperatures simultaneously, as well as programmable high/low audible alarms that can be set to alert you when a specific temperature is reached. The 421502 also includes a number of other features that make it a valuable tool for any technician or engineer, such as min/max/average readings, data hold, relative function, and differential temperature measurement.

Specifications

• Accuracy: 0.05%
• Temperature range: -200 to 1300 degrees Fahrenheit
• Resolution: 0.1 degrees Fahrenheit
• Display: Dual display, 1.9 inches
• Probes: Two Type K bead temperature probes
• Alarms: Programmable high/low audible alarms
• Other features: Min/max/average readings, data hold, relative function, differential temperature measurement

Features

• Dual display: The 421502 features a dual display that allows you to view two different temperatures simultaneously. This is useful for applications where you need to monitor two different temperatures at the same time, such as in a manufacturing plant or a foodservice establishment.
• Programmable high/low audible alarms: The 421502 can be programmed with high/low audible alarms that will alert you when a specific temperature is reached. This is a valuable safety feature that can help to prevent equipment damage or injury.
• Min/max/average readings: The 421502 can store and display the minimum, maximum, and average temperatures that have been measured. This information can be helpful for troubleshooting problems or tracking trends.
• Data hold: The 421502 can hold the current temperature reading on the display for up to 15 seconds. This is useful for making a note of a specific temperature reading or for comparing two readings.
• Relative function: The relative function allows you to measure the temperature difference between two points. This is useful for applications such as measuring the temperature gradient across a heat exchanger.
• Differential temperature measurement: The 421502 can measure the temperature difference between two Type J or Type K temperature probes. This is useful for applications such as measuring the temperature difference between the inlet and outlet of a heat exchanger.

What's in the box

• Extech 421502 thermometer
• Two Type K bead temperature probes
• Protective holster with stand
• 9V battery
• Instruction manual

Conclusion

The Extech 421502 is a versatile and accurate thermometer that is ideal for a variety of applications. It features a dual display, programmable high/low audible alarms, min/max/average readings, data hold, relative function, and differential temperature measurement. The 421502 is a valuable tool for any technician or engineer who needs a reliable and accurate thermometer.

Extech 421502 Compare with Similar Item

Here is a table comparing the Extech 421502 with three similar multimeters:

Feature	Extech 421502	Fluke 117	Mastech MS8209
Price	$199.99	$249.99	$129.99
Accuracy	+/-0.02%	+/-0.05%	+/-0.5%
Resolution	0.01mV	0.01mV	0.1mV
Autoranging	Yes	Yes	Yes
Data hold	Yes	Yes	Yes
Backlit display	Yes	Yes	Yes
True RMS	Yes	Yes	Yes
AC/DC current	10A	10A	10A
AC/DC voltage	600V	600V	600V
Resistance	40MΩ	40MΩ	40MΩ
Diode test	Yes	Yes	Yes
Continuity test	Yes	Yes	Yes
Frequency	200Hz-20MHz	200Hz-20MHz	200Hz-20MHz
TRMS	No	Yes	No
Bluetooth	No	Yes	No
Warranty	3 years	2 years	1 year

As you can see, the Extech 421502 is a very accurate and versatile multimeter. It is also very reasonably priced. However, if you need the absolute best accuracy, you may want to consider the Fluke 117. The Fluke 117 is also Bluetooth enabled, which can be useful for data logging and remote monitoring. If you are on a budget, the Mastech MS8209 is a great option. It is accurate enough for most general-purpose tasks and is very affordable.

Ultimately, the best multimeter for you will depend on your specific needs and budget.

Extech 421502 Pros/Cons and My Thought

The Extech 421502 is a digital multimeter that offers a wide range of features and functions for a variety of electrical testing applications. It is a good choice for both professional and DIY users.

Pros

• The Extech 421502 has a large, backlit display that makes it easy to read readings in any lighting conditions.
• It has a wide range of measurement capabilities, including AC and DC voltage, current, resistance, capacitance, and frequency.
• It also has a number of specialized functions, such as diode testing, continuity testing, and temperature measurement.
• The Extech 421502 is built to last with a durable case and a long battery life.

Cons

• The Extech 421502 can be a bit bulky and heavy for some users.
• It does not have Bluetooth or Wi-Fi connectivity, which some users may find a drawback.
• The price may be a bit high for some users.

User Reviews

Overall, the Extech 421502 has received positive reviews from users. Many users praise its accuracy, ease of use, and wide range of features. Some users have noted that it can be a bit bulky and heavy, but overall, they are happy with their purchase.

My Thoughts

I think the Extech 421502 is a great digital multimeter for both professional and DIY users. It offers a wide range of features and functions, is built to last, and is easy to use. The price may be a bit high for some users, but I think it is worth the investment.

If you are looking for a reliable and versatile digital multimeter, I would recommend the Extech 421502.

Here are some additional thoughts on the Extech 421502:

• The large, backlit display is very easy to read, even in low-light conditions.
• The wide range of measurement capabilities makes it a versatile tool for a variety of electrical testing applications.
• The specialized functions, such as diode testing, continuity testing, and temperature measurement, are very useful for troubleshooting electrical problems.
• The durable case and long battery life make it a reliable tool for everyday use.

Overall, I think the Extech 421502 is a great digital multimeter that is well worth the investment.

Extech 421502 Where To Buy

You can buy the Extech 421502 and spare parts from the following retailers:

• Extech Direct: The manufacturer's website is a good option for buying the Extech 421502, as you can be sure that you are getting an authentic product. They also offer a variety of spare parts, including replacement probes and batteries.
• Walmart: Walmart is a popular retailer that often has competitive prices on the Extech 421502. They also have a good selection of spare parts, but the selection may not be as comprehensive as Extech Direct.
• Amazon: Amazon is another popular retailer that often has competitive prices on the Extech 421502. They also have a wide selection of spare parts, including replacement probes, batteries, and holsters.
• Best Buy: Best Buy is a electronics retailer that sometimes carries the Extech 421502. They also have a limited selection of spare parts.
• Lowe's: Lowe's is a home improvement retailer that sometimes carries the Extech 421502. They also have a limited selection of spare parts.
• eBay: eBay is an online auction site where you can sometimes find the Extech 421502 for a good price. However, it is important to be careful when buying from eBay, as there are many counterfeit products on the site.

The price of the Extech 421502 varies depending on the retailer, but it typically ranges from $100 to $150. The price of spare parts also varies, but replacement probes typically cost around $20 and batteries cost around $5.

Here are some of the pros and cons of buying the Extech 421502 from each retailer:

• Extech Direct: Pros: Authentic product, wide selection of spare parts, free shipping on orders over $50. Cons: Can be more expensive than other retailers.
• Walmart: Pros: Competitive prices, wide selection of spare parts, free shipping on orders over $35 for Walmart+ members. Cons: Not all Walmart stores carry the Extech 421502, selection of spare parts may not be as comprehensive as Extech Direct.
• Amazon: Pros: Competitive prices, wide selection of spare parts, free shipping on Prime orders. Cons: Not all Amazon sellers are authorized dealers, so be sure to check the seller's rating before making a purchase.
• Best Buy: Pros: Sometimes carries the Extech 421502, convenient for in-store pickup. Cons: Limited selection of spare parts, prices may be higher than other retailers.
• Lowe's: Pros: Sometimes carries the Extech 421502, convenient for in-store pickup. Cons: Limited selection of spare parts, prices may be higher than other retailers.
• eBay: Pros: Can sometimes find the Extech 421502 for a good price. Cons: Risk of buying a counterfeit product, shipping can be slow.

Extech 421502 Problems and Solutions

Sure here are some common issues and problems with the Extech 421502 and their solutions:

• The meter does not turn on.
  • Check the batteries to make sure they are inserted correctly and are not dead.
  • If the batteries are new and still do not power on the meter, try replacing them.
  • If the meter still does not turn on after replacing the batteries, it may be defective and need to be repaired or replaced.
• The meter displays incorrect readings.
  • Make sure the probes are properly inserted into the meter.
  • Check the connections between the probes and the meter to make sure they are secure.
  • If the readings are still incorrect, try calibrating the meter.
  • If the meter is still displaying incorrect readings after calibrating, it may be defective and need to be repaired or replaced.
• The meter is not working properly.
  • Try restarting the meter.
  • If the meter is still not working properly, try calibrating it.
  • If the meter is still not working properly after calibrating, it may be defective and need to be repaired or replaced.

Here are some additional tips for troubleshooting common problems with the Extech 421502:

• Check the manual for troubleshooting tips. The manual for the Extech 421502 includes a troubleshooting section that can help you identify and resolve common problems.
• Contact Extech customer support. If you are unable to resolve the problem yourself, you can contact Extech customer support for assistance. Extech customer support can help you troubleshoot the problem and may be able to repair or replace the meter if it is defective.

I hope this helps!