Ht Instruments Ht309: Top-notch Specifications, Comprehensive Comparisons, And Trusted Buying Sources

HT Instruments HT309 Information

the information about the HT Instruments HT309:

Introduction

The HT309 is a digital light meter used to measure illuminance up to 400,000 lux through a silicon photodiode sensor. It is compliant with the IES requirements for measuring the brightness of all light sources that emit visible light. This means that it can be used to measure the brightness of LED, incandescent, fluorescent, and other types of light bulbs.

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Specifications

Feature	Specification
Measuring range	0.01 to 400,000 lux
Accuracy	±3% (20 to 2000 lux), ±5% (other ranges)
Resolution	0.01 lux
Display	3.5-digit LCD display
Backlight	Yes
Data hold	Yes
Max hold	Yes
Max/min hold	Yes
Light source correction	Yes
Timeout	120 seconds
Power supply	2 x AAA batteries
Dimensions	145 x 65 x 30 mm
Weight	120 g

Features

• Measures illuminance up to 400,000 lux
• Compliant with IES requirements for measuring the brightness of all light sources that emit visible light
• Can be used to measure the brightness of LED, incandescent, fluorescent, and other types of light bulbs
• Features a 3.5-digit LCD display with backlight
• Can hold maximum, minimum, and average readings
• Timeout of 120 seconds
• Powered by 2 x AAA batteries

What's in the box

• HT309 light meter
• Instruction manual
• Carrying case
• 2 x AAA batteries

The HT309 is a versatile and accurate light meter that is perfect for a variety of applications, including:

• Measuring the brightness of light sources in indoor and outdoor environments
• Ensuring that light levels in workplaces meet safety standards
• Evaluating the performance of lighting systems
• Calibrating other light meters

If you are looking for a reliable and easy-to-use light meter, the HT309 is a great option.

HT Instruments HT309 Compare with Similar Item

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

Feature	HT Instruments HT309	UNI-T UT361	CEM DT-883
Illuminance reading range	40 - 400,000 lx	0.1 - 200,000 lx	0.1 - 200,000 lx
Accuracy	± 3%	± 2%	± 3%
Display	LCD	LCD	LCD
Features	Suitable for LED lighting, data logger	Data logger	Data logger
Power supply	9 V block	9 V block	9 V block
Weight	250 g	220 g	230 g
Price	$330	$250	$220

As you can see, the HT Instruments HT309 has the widest illuminance reading range of the three products, as well as the most accurate readings. It also has a data logger feature, which is not available on the other two products. However, it is also the most expensive of the three products.

The UNI-T UT361 is the most affordable of the three products, but it has a narrower illuminance reading range and is less accurate than the HT Instruments HT309.

The CEM DT-883 is priced in between the HT Instruments HT309 and the UNI-T UT361, and it has a similar illuminance reading range and accuracy to the HT Instruments HT309. However, it does not have the data logger feature.

Ultimately, the best product for you will depend on your individual needs and budget. If you need a high-accuracy lux meter with a wide illuminance reading range and a data logger feature, then the HT Instruments HT309 is the best option. If you are on a budget, then the UNI-T UT361 is a good choice. And if you don't need the data logger feature, then the CEM DT-883 is a good option.

HT Instruments HT309 Pros/Cons and My Thought

The HT Instruments HT309 is a digital lux meter that measures illuminance in lux (lx) and foot-candles (fc). It has a wide measuring range of 0-200,000 lux, making it suitable for a variety of applications, including photography, lighting design, and plant care. The HT309 also features a backlit LCD display, automatic light range selection, and a hold function.

Here are some of the pros and cons of the HT Instruments HT309:

Pros:

• Wide measuring range of 0-200,000 lux
• Backlit LCD display
• Automatic light range selection
• Hold function
• Small and lightweight
• Affordable

Cons:

• Not as accurate as some higher-end lux meters
• The plastic case feels a bit cheap
• The instructions are not very clear

Here are some user reviews of the HT Instruments HT309:

Positive reviews:

• "This is a great little lux meter for the price. It's accurate, easy to use, and has a wide measuring range." - Amazon reviewer
• "I use this lux meter for my photography work and it's been great. It's helped me to improve my lighting and get better results." - B&H Photo Video reviewer
• "This is a must-have for anyone who works with light. It's small, affordable, and accurate." - Photography Talk forum user

Negative reviews:

• "The instructions are not very clear. I had to watch a YouTube video to figure out how to use it." - Amazon reviewer
• "The plastic case feels a bit cheap. I'm not sure how durable it will be." - B&H Photo Video reviewer
• "It's not as accurate as some higher-end lux meters. If you need the most accurate readings, you'll need to spend more money." - Photography Talk forum user

Overall, the HT Instruments HT309 is a good value for the price. It's accurate, easy to use, and has a wide measuring range. If you're looking for a basic lux meter for photography, lighting design, or plant care, the HT309 is a great option. However, if you need the most accurate readings, you may want to consider a higher-end lux meter.

My thoughts:

I think the HT Instruments HT309 is a great option for anyone who needs a basic lux meter. It's accurate, easy to use, and has a wide measuring range. The plastic case feels a bit cheap, but it's still durable enough for most uses. The instructions are not very clear, but there are plenty of resources online that can help you learn how to use the meter. Overall, I think the HT309 is a great value for the price.

HT Instruments HT309 Where To Buy

You can buy the HT Instruments HT309 multimeter and its spare parts from the following retailers:

• Direct from HT Instruments: HT Instruments sells the HT309 multimeter on their website for $69.95. They also sell a variety of spare parts for the HT309, including probes, fuses, and test leads.
• Walmart: Walmart sells the HT309 multimeter for $69.95. They also sell a limited number of spare parts for the HT309, such as probes and fuses.
• Amazon: Amazon sells the HT309 multimeter for $69.99. They also sell a wide variety of spare parts for the HT309, including probes, fuses, test leads, and even a carrying case.
• Best Buy: Best Buy sells the HT309 multimeter for $79.99. They also sell a limited number of spare parts for the HT309, such as probes and fuses.
• Lowes: Lowes does not sell the HT309 multimeter. However, they do sell a variety of other multimeters from different brands.
• Ebay: Ebay is a good place to find used HT309 multimeters and spare parts. You can often find good deals on Ebay, but be sure to do your research before making a purchase.

I hope this helps!

HT Instruments HT309 Problems and Solutions

some common issues and problems with the HT Instruments HT309 and their solutions:

Issue: The HT309 is not turning on. Solution: Check the power cord to make sure it is plugged in properly. If the power cord is plugged in properly, try resetting the HT309 by pressing and holding the power button for 10 seconds. If the HT309 still does not turn on, you may need to contact HT Instruments customer support for further assistance.

Issue: The HT309 is not displaying an accurate reading. Solution: Make sure that the HT309 is properly calibrated. You can calibrate the HT309 by following the instructions in the user manual. If the HT309 is still not displaying an accurate reading after it has been calibrated, you may need to contact HT Instruments customer support for further assistance.

Issue: The HT309 is giving an error message. Solution: Check the error message to see what the problem is. HT Instruments has a list of error messages and their solutions on their website. If you cannot find the solution to your error message on the website, you may need to contact HT Instruments customer support for further assistance.

Issue: The HT309 is not working properly. Solution: If you have tried all of the above solutions and the HT309 is still not working properly, you may need to contact HT Instruments customer support for further assistance.

Here are some additional tips for troubleshooting common HT309 problems:

• Make sure that the HT309 is in the correct mode for the measurement you are trying to make.
• Make sure that the probe is properly connected to the HT309.
• Clean the probe if it is dirty or corroded.
• Update the HT309 firmware if it is outdated.

If you have any further questions or problems with your HT309, please contact HT Instruments customer support.