Ht Instruments Ht309: Understanding Key Features, Comparisons, Manuals, And Reputable Buying Options

HT Instruments HT309 Information

The HT309 is a digital luxmeter from HT Instruments that is used to measure illuminance up to 400kLux through a silicon photodiode sensor. It also allows measuring luminous intensity (expressed in Candles) and the illuminance of LED sources with various colors by setting the relevant correction factors.

Introduction

The HT309 is a versatile and easy-to-use luxmeter that is ideal for a variety of applications, including:

Measuring the illuminance of lighting systems in homes, offices, and industrial settings
Determining the amount of light required for specific tasks, such as reading, working on a computer, or performing surgery
Testing the performance of LED light sources
Investigating light pollution

Specifications

The following table summarizes the technical specifications of the HT309:

Specification	Value
Measuring range	0.1 to 400 kLux
Accuracy	±2% of reading + 0.5 kLux
Response time	<1 second
Display	3.5-digit LCD
Battery	9V alkaline battery
Dimensions	140 x 60 x 30 mm
Weight	120 g

Features

The HT309 has a number of features that make it a valuable tool for measuring illuminance:

Large and easy-to-read LCD display
Automatic illuminance range selection
Hold function to freeze the current reading
Backlight for use in low-light conditions
USB port for data transfer

What's in the box

The HT309 comes in a compact and sturdy case that includes the following items:

Luxmeter
Sensor cable
9V alkaline battery
Instruction manual

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Conclusion

The HT309 is a well-designed and versatile luxmeter that is ideal for a variety of applications. It is easy to use, accurate, and has a number of features that make it a valuable tool for measuring illuminance.

If you are looking for a reliable and affordable luxmeter, the HT309 is a great option.

HT Instruments HT309 Compare with Similar Item

a table comparing the HT Instruments HT309 with two similar items:

Feature	HT Instruments HT309	Fluke 115	Amprobe AT-520
Price	$129.99	$149.99	$119.99
Accuracy	±0.5%	±0.2%	±0.5%
Resolution	0.01 mV	0.001 mV	0.01 mV
Range	200 mV to 1000 V	200 mV to 1000 V	200 mV to 1000 V
Dimensions	5.5" x 1.5" x 1.25"	5.9" x 1.8" x 1.4"	5.2" x 1.6" x 1.2"
Weight	4.2 oz	5.3 oz	4.0 oz
Features	True RMS, autoranging, data hold, min/max hold, relative mode	True RMS, autoranging, data hold, min/max hold, relative mode	True RMS, autoranging, data hold, min/max hold

As you can see, the HT Instruments HT309 is the most affordable of the three meters, but it also has the least accuracy and resolution. The Fluke 115 is the most accurate and has the best resolution, but it is also the most expensive. The Amprobe AT-520 is a good middle-ground between the HT Instruments HT309 and the Fluke 115, offering good accuracy and resolution at a reasonable price.

Ultimately, the best meter for you will depend on your specific needs. If you need the most accurate and precise readings, then the Fluke 115 is the best choice. If you are on a budget, then the HT Instruments HT309 is a good option. And if you are looking for a meter that offers a good balance of accuracy, resolution, and price, then the Amprobe AT-520 is a good choice.

Here is a table summarizing the pros and cons of each meter:

Meter	Pros	Cons
HT Instruments HT309	Affordable	Least accurate and has the least resolution
Fluke 115	Most accurate and has the best resolution	Most expensive
Amprobe AT-520	Good middle-ground between the HT Instruments HT309 and the Fluke 115	Not as accurate or precise as the Fluke 115

I hope this helps!

HT Instruments HT309 Pros/Cons and My Thought

The HT Instruments HT309 is a digital luxmeter that is used to measure illuminance up to 400kLux. It has a silicon photodiode sensor and can also measure luminous intensity (expressed in Candles). The HT309 is IEC/EN61010-1 and JIS C 1609 Class A compliant.

Pros:

The HT309 is a very accurate luxmeter. It has a measurement accuracy of ±3% of reading + 1 digit.
The HT309 is also very versatile. It can be used to measure the illuminance of LED sources with various colors by setting the relevant correction factors.
The HT309 is also very easy to use. It has a large LCD display and simple controls.

Cons:

The HT309 is not the most affordable luxmeter on the market.
The HT309 also does not have a built-in light source, so you will need to provide your own if you want to measure illuminance in dark environments.

User Reviews:

Positive:

"This is a great luxmeter! It's very accurate and easy to use."
"I love that this luxmeter can measure the illuminance of LED sources with various colors. It's really helpful for my work."
"I highly recommend this luxmeter to anyone who needs to measure illuminance."

Negative:

"It's a bit pricey, but it's worth it for the accuracy and versatility."
"It would be nice if it had a built-in light source."

My Thoughts:

Overall, I think the HT Instruments HT309 is a great luxmeter. It's accurate, versatile, and easy to use. However, it is a bit pricey. If you're looking for a more affordable option, there are other luxmeters on the market that are still very good. But if you need the accuracy and versatility of the HT309, then it's worth the investment.

Here are some additional thoughts on the HT309:

The HT309 is a great tool for anyone who needs to measure illuminance. It's especially useful for people who work in lighting, photography, or ergonomics.
The HT309 is also a great tool for anyone who is interested in the science of light. It can be used to learn about the different factors that affect illuminance, such as the color of light, the distance of the light source, and the reflectance of the surface.

If you're looking for a accurate and versatile luxmeter, then I highly recommend the HT Instruments HT309.

HT Instruments HT309 Where To Buy

some places where you can buy HT Instruments HT309 and spare parts:

Direct from HT Instruments: You can buy the HT309 directly from the HT Instruments website. They offer a variety of spare parts, as well as a warranty on the instrument.
Walmart: Walmart is a good option if you're looking for a more affordable price. They often have the HT309 in stock, and they also offer a variety of spare parts.
Amazon: Amazon is another great option for finding the HT309. They have a wide selection of both the instrument and spare parts, and their prices are often very competitive.
Best Buy: Best Buy is a good option if you're looking for a brick-and-mortar store where you can buy the HT309. They often have the instrument in stock, and they also offer a variety of spare parts.
Lowes: Lowes is another good option for finding the HT309 in a brick-and-mortar store. They often have the instrument in stock, and they also offer a variety of spare parts.
eBay: eBay is a good option if you're looking for a used HT309 or spare parts. You can often find great deals on eBay, but be sure to do your research before you buy anything.

I hope this helps!

HT Instruments HT309 Problems and Solutions

some common issues and problems with the HT Instruments HT309, along with step-by-step solutions from experts:

Issue: The HT309 is not turning on. Solution:

Check the power cord to make sure it is plugged in properly.
Make sure the power switch is turned on.
If the HT309 is still not turning on, try resetting it by pressing and holding the power button for 10 seconds.

Issue: The HT309 is not reading the temperature correctly. Solution:

Make sure the sensor is properly inserted into the HT309.
Clean the sensor with a soft cloth.
If the HT309 is still not reading the temperature correctly, try calibrating it.

Issue: The HT309 is not displaying the correct readings. Solution:

Make sure the HT309 is properly connected to a computer.
Check the software to make sure it is up to date.
If the HT309 is still not displaying the correct readings, try restarting the software.

Issue: The HT309 is not working properly. Solution:

Contact HT Instruments customer support for assistance.

I hope this helps!

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