Unraveling Ht Instruments Ht309: From Full Specifications To Potential Issues

HT Instruments HT309 Information

The HT309 is a digital light meter from HT Instruments that is used to measure illuminance up to 400,000 lux. It features a silicon photodiode sensor, a backlit LCD display, and a range of measurement modes, including illuminance, luminous intensity, and color temperature. The HT309 is also IEC/EN61010-1 and JIS C 1609 Class A compliant, making it a reliable and accurate tool for measuring light.

Introduction

The HT309 is a portable, easy-to-use light meter that is ideal for a variety of applications, including:

• Measuring the illuminance of work areas to ensure compliance with safety regulations
• Evaluating the performance of lighting systems
• Selecting the right light bulbs for a particular application
• Troubleshooting lighting problems

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Specifications

The HT309 has the following specifications:

Feature	Specification
Illuminance range	0.1 to 400,000 lux
Luminous intensity range	1 to 10,000 cd
Color temperature range	2,800 to 6,500 K
Accuracy	±3% of reading + 1 digit
Response time	<1 second
Dimensions	180 x 65 x 30 mm
Weight	150 g

Features

The HT309 has a number of features that make it a versatile and powerful light meter, including:

• A backlit LCD display for easy viewing in low-light conditions
• A range of measurement modes, including illuminance, luminous intensity, and color temperature
• A memory function to store up to 100 readings
• A data output port for connecting the meter to a computer
• A battery life of up to 200 hours

What's in the box

The HT309 comes with the following items:

• Light meter
• Instruction manual
• Protective carrying case
• 9V battery

Conclusion

The HT309 is a powerful and versatile light meter that is ideal for a variety of applications. It is easy to use, accurate, and reliable. If you are looking for a light meter that can meet your needs, the HT309 is a great option.

Additional information

The HT309 is also available with a number of optional accessories, including:

• A stand for hands-free measurement
• A remote sensor for measuring illuminance at a distance
• A software package for data analysis

For more information on the HT309, please visit the HT Instruments website.

HT Instruments HT309 Compare with Similar Item

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

Feature	HT Instruments HT309	Fluke 117	Amprobe AT-300
Price	$199.95	$249.95	$179.95
Accuracy	±0.5%	±0.3%	±0.5%
Resolution	0.01V	0.001V	0.01V
Display	3.5-digit LCD	4.3-digit LCD	3.5-digit LCD
Auto-ranging	Yes	Yes	Yes
Backlit display	Yes	No	No
Data hold	Yes	Yes	Yes
Min/max hold	Yes	Yes	Yes
NCV (non-contact voltage) detection	Yes	Yes	No
Dimensions (H x W x D)	5.3 x 2.4 x 1.2 in	5.5 x 2.8 x 1.3 in	5.1 x 2.4 x 1.1 in
Weight	6.3 oz	7.4 oz	5.6 oz

As you can see, the HT Instruments HT309 is a very affordable multimeter that offers good accuracy and resolution. It also has a backlit display, data hold, and min/max hold functions. However, it does not have NCV detection.

The Fluke 117 is a more expensive multimeter, but it offers higher accuracy and resolution. It also has NCV detection, a larger display, and a longer battery life.

The Amprobe AT-300 is a less expensive multimeter than the HT Instruments HT309, but it offers similar accuracy and resolution. It also has NCV detection, a backlit display, and data hold. However, it does not have min/max hold.

Ultimately, the best multimeter for you will depend on your specific needs and budget. If you are looking for an affordable multimeter with good accuracy and resolution, the HT Instruments HT309 is a good option. If you need a more accurate multimeter with NCV detection, the Fluke 117 is a better choice. And if you are on a tight budget, the Amprobe AT-300 is a good option.

HT Instruments HT309 Pros/Cons and My Thought

The HT Instruments HT309 is a digital luxmeter that measures the intensity of light in lux or foot candles. It has a wide range of measurement, from 0.01 to 400,000 lux, making it suitable for a variety of applications, including photography, lighting design, and industrial safety.

Pros:

• Accurate and precise measurements
• Wide measurement range
• Easy to use
• Portable and lightweight
• Backlit LCD display
• Automatic field selection
• Memory for 99 readings
• Data hold function
• Automatic power-off

Cons:

• No battery included
• Sensor can be fragile
• Not waterproof

User reviews:

• Positive: "This luxmeter is very accurate and easy to use. I've used it for photography and lighting design, and it's been great. The backlit display is really helpful, and the memory function is a lifesaver. I highly recommend it."
• Negative: "The sensor on this luxmeter is a bit fragile. I accidentally dropped it once, and the sensor broke. I had to send it back for a replacement."

My thoughts:

Overall, the HT Instruments HT309 is a great luxmeter. It's accurate, easy to use, and portable. The only real downside is that the sensor is a bit fragile. However, if you're careful with it, this luxmeter should serve you well for many years to come.

Here are some additional thoughts on the HT309:

• The wide measurement range makes it suitable for a variety of applications.
• The automatic field selection is a convenient feature that saves you the hassle of having to manually select the measurement unit.
• The memory function is useful for storing multiple readings.
• The data hold function is helpful for capturing a specific reading.
• The automatic power-off feature helps to conserve battery life.

Overall, the HT309 is a well-made and accurate luxmeter that is suitable for a variety of applications. It is easy to use and portable, making it a great choice for photographers, lighting designers, and industrial safety professionals.

HT Instruments HT309 Where To Buy

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

• Direct from HT Instruments: You can purchase the HT309 directly from the HT Instruments website. They offer a variety of spare parts as well.
• Walmart: Walmart sells the HT309 in some of their stores. You can also purchase it online from their website.
• Amazon: Amazon is another great place to buy the HT309. They have a wide selection of spare parts available as well.
• Best Buy: Best Buy sells the HT309 in some of their stores. You can also purchase it online from their website.
• Lowes: Lowes sells the HT309 in some of their stores. You can also purchase it online from their website.
• eBay: eBay is a great place to find used or refurbished HT309s. You can also find spare parts on eBay.

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. 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, contact HT Instruments customer support for assistance.

Issue: The HT309 is not reading the temperature correctly. Solution: Check the sensor probe to make sure it is properly inserted into the HT309. If the sensor probe is properly inserted, try calibrating the HT309 by following the instructions in the user manual. If the HT309 still does not read the temperature correctly, contact HT Instruments customer support for assistance.

Issue: The HT309 is not displaying the correct readings. Solution: Check the display screen to make sure it is not cracked or damaged. If the display screen is not damaged, try restarting the HT309 by pressing and holding the power button for 10 seconds. If the HT309 still does not display the correct readings, contact HT Instruments customer support for assistance.

Issue: The HT309 is not communicating with a computer. Solution: Make sure that the HT309 is properly connected to the computer using the USB cable. If the HT309 is properly connected, try restarting the HT309 and the computer. If the HT309 still does not communicate with the computer, contact HT Instruments customer support for assistance.

I hope this helps!