Category Archives: Opacity and Turbidity Sensor

Why Opacity Sensors Are Used to Prevent Identifying Visible Fill Lines

OPAX Opacity Sensor

Opacity sensors have a variety of different beneficial usages for manufacturers. At EMX Industries, Inc., we’re in the business of not just producing high quality sensors, such as our OPAX-1000 opacity sensor, but in ensuring they offer valid, reliable applications which effectively solve real problems that occur in everyday usage.

Continue reading Why Opacity Sensors Are Used to Prevent Identifying Visible Fill Lines

Determine Container Opacity with the OPAX Online Opacity Tester System

You’ve heard that light can make beer “skunky” and that it can alter the taste of milk after only a few minutes of direct sunlight; because of the damaging effects of light, many products, such as pharmaceutical and nutritional supplement containers, require a packaging that shields the contents inside.  In order to manufacture such packaging, one must determine it’s opacity, or its impenetrability to various forms of radiation.  By establishing pass/fail criteria for a container’s opacity and with the help of online opacity testing, one can eliminate defects and engage in real time quality control.


The OPAX Online Opacity Tester System from EMX combines proven sensor technology with innovative hardware to provide users with an easy-to-use light transmission measurement system which can be used on materials such as high- and low- density polyethylene, HDPE plastic and other opaque materials like paper and composite films.  A Laser-Mark position sensor indicates the container in position to be measured while a numerical display indicates the observed levels.  The OPAX’s high detection speed provides a 100 microsecond discrete response which can be monitored on an external system thanks to the OPAX’s high-resolution analog output.  Its rugged design and adjustable brackets provide quick installation and integration into your application.


If you’re interested in learning more about how the OPAX can benefit your manufacturing process you can see it in action or visit our main website to view the product spec sheets and request a free quote. You can also call us at 216.518.9888 and speak with a member of our team directly to find out more about our full line of industrial sensors and how you can start working with them today.

And be sure to check out the EMX Sensors app!  Available on iTunes and Google Play, it makes accessing user manuals in the field a breeze.

Why Opacity Sensors Are an Effective Solution to Verify the Consistency in Continuous Film Manufacturing

OPAX Opacity SensorThe OPAX-1000 from EMX Industries is widely used to test the opacity of product packaging and containers, including common usages in the pharmaceutical, food and personal care industries. However, we have a commitment to utilizing our products in innovative ways to produce effective production and quality control strategies and systems for clients with a diverse set of needs.

One example of this is the ability to utilize the OPAX-1000 to verify the consistency and quality in continuous film manufacturing.

In such an environment, the OPAX-1000 can be mounted at the desired stage of the existing production process. With a sensing distance of up to 300 mm, three light intensity levels, rugged and durable construction, and easily adjustable brackets, it’s amazingly quick and simple to add our opacity sensor in nearly any currently used system.

The OPAX-1000 can then identify the color of the film, utilizing an adjustable pass/fail criteria and detection threshold, measured as a two-digit number from 0 to 99 in Relative Opacity Units.

With a discrete output response in just 100 microseconds, it’s an amazingly efficient and speedy detection system. When film color starts to vary, or other issues arise affecting product quality and protection, the OPAX-1000 offers an instantaneous signal to your product control team.

Problems can be quickly found, diagnosed and prevented, faulty products can be removed, and large scale problems can be avoided before they occur. All of this is possible with an affordable, automated solution which works on-line with your existing continuous film manufacturing processes.

Efficiency and productivity are increased, costs are decreased, and overall product quality and consistency improve.

That’s a winning solution, and that’s what we’re dedicated to providing at EMX Industries. Utilizing the OPAX-1000 for film manufacturing quality testing and control is just one example of how we work with our clients to produce reliable and innovative solutions for any production problem.

To see how the OPAX-1000 can be put to use for you, call 216.518.9888 today and we’ll provide you with more information and product specifications. A video demonstration of the OPAX-1000 is also available at our main website,, where you’ll also find a product request form.

How to Use Opacity Sensors to Monitor Turbidity in Water Treatment Applications

OPAX - 1000 Opacity Measurement SystemThe OPAX-1000 opacity sensor from EMX Industries can be used in a variety of different ways. While many of our clients use the OPAX-1000 for product packaging and container opacity testing, another important capability for this sensor is in the monitoring of turbidity in water treatment applications.
Turbidity refers to level of impurities or foreign particulates found in a liquid. Visibly, turbidity produces cloudiness or haziness of varying degrees, with more turbidity producing a thicker, cloudier result. It’s a key indicator of water quality and is therefore highly relevant for water treatment.

A number of common terms and measurements are used for turbidity, including Formazin Turbidity Units (FTU), Formazin Nephelometric Units (FNU) and Nephelometric Turbidity Units (NTU). However, with the OPAX-1000 opacity measurement system, it’s simple to use our unique system of two-digit Relative Opacity Units, offering users a quickly recognizable measurement from 0 to 99.

In this way, an intuitive numerical output can be used and correspond with a pass/fail detection level or threshold for how pure the sample liquid is, or in other words, eliminating samples when there is too much turbidity present. This will help to not only identify potentially faulty end products, but also signal times at which an entire system or process needs to be adjusted due to a series of samples which register as beneath the minimum threshold.

The OPAX-1000 offers real-time quality control and precise, consistent measurement. Working at a distance of up to 300mm, and with three potential choices for light intensity, the sensor shoots its light at the liquid sample, and measures the amount of light which gets reflected back.

When more light is reflected, more particulates are present, and turbidity is higher. It’s also important to take into consideration with detection levels and other measurements, how different particulates may reflect different amounts of light, or settle in a quicker amount of time.

Ultimately, the OPAX-1000 offers accurate real-time results which provide immediate insight and quick, easy and accurate recognition.

If you’re working with water treatment applications or similar manufacturing or industrial processes, then the OPAX-1000 may be just the solution that you’ve been seeking. Call us today at 216.518.9888 and we’ll provide you with more information and specifications, and you’ll see for yourself how the OPAX-1000 opacity sensor can be put to use for your company.

Why Opacity Sensors Are Used to Prevent Identifying Visible Fill Lines

OPAX Opacity Sensor

Opacity sensors have a variety of different beneficial usages for manufacturers. At EMX Industries, Inc., we’re in the business of not just producing high quality sensors, such as our OPAX-1000 opacity sensor, but in ensuring they offer valid, reliable applications which effectively solve real problems that occur in everyday usage.

Even with a high quality manufacturing and production process, it can be exceedingly difficult to fill bottles with a liquid product at the exact same level each and every time. And while small margins of error don’t relate to a change in what an end-consumer is actually receiving for their money, it nevertheless can confuse or dismay a potential customer.

Why do two of the same products look different? What does it mean, and what does it say about the company making them? Is this a reliable product to use? Am I getting what I’m paying for? These are all preventable questions and concerns with correct packaging processes.

In such instances, opaque containers are often used so that consumers cannot see those inconsistent fill lines. The same opaque containers also provide additional benefits, such as the effective protection of its contents from light degradation.

Using the OPAX-1000, manufacturers can easily set pass/fail criteria for a minimum level of packaging opacity. It’s an amazingly fast and versatile solution which can be used on-line with your current system, providing real-time quality control, and precise, accurate measurements. Detection speed is unrivaled, with a 100 microsecond discrete output response.

When the sensor receives too much light back from your packaging, meaning its opacity is too low, the red LED instantaneously flashes. Relative Opacity Units are also displayed from 0 to 99, offering an intuitive measurement, threshold and detection system.

From there, numerous adjustments and settings can be utilized to achieve desired results in any production or industrial environment. Defects will be found and weeded out, processes can be adjusted, and problems are solved at the source before they get worse.

Whether you’re a pharmaceutical manufacturer, you’re working with food packaging or you’re producing personal care products, with the OPAX-1000 opacity sensor, you’ll be able to eliminate defects, effectively and efficiently use opaque packaging and containers, and ensure a consistent, reliable end result.

To learn more about the OPAX-1000 opacity sensor and how it can be quickly put to work for your company and processes, contact us today by calling 216.518.9888.

How Opacity Sensors Can Help Protect a Product from Light Degradation

EMX’s OPAX-1000 opacity sensor is an extremely versatile piece of equipment, with many tried and true real-world OPAX-1000 Opacity Sensorapplications. Right at the top of the list though is its ability to ensure the proper opacity of containers and packaging which would be needed to protect the contents within.

In a variety of industries, including pharmaceutical, food products, and personal care, sunlight can cause direct damage to whatever substance is being contained. The damaging effects of light could lead to a food product spoiling, a pharmaceutical product becoming unsafe or ineffective, and on down the line.

With the OPAX-1000 though, this problem can be prevented using high-speed, accurate, reliable and on-line measurements. This improves not only the end result and overall consistency of your process and product, but also improves your efficiency and your bottom line, while preventing bigger hassles and headaches before they occur.

Users can quickly and intuitively set a pass/fail criteria for the minimum opacity of their containers or packaging. The OPAX-1000 then provides instantaneous, real-time quality control, offering a reliable solution to monitor every single container and remove the ones without the proper level of opacity.

A relative opacity units display is shown from 0 to 99, while discrete PNP/NPN output is also offered, and a quick flash of a red alert shows any defective or insufficient products. A wide range of settings are also available, including light source intensity, hysteresis level, detection level, user sensitivity calibration, output pulse stretch, and more. The OPAX-1000 can also be locked for security, and teach mode provides an auto-set detection threshold.

The OPAX-1000 can be easily used with a variety of materials, including pharmaceutical containers, food packaging, personal care products, HDPE and LDPE containers, and more. With easy adjustable mounting brackets, a sensing distance of up to 300mm, and rugged industrial-strength construction, it’s also amazingly simple to integrate with any existing process.

With the OPAX-1000 from EMX Industries, you’ll greatly benefit from the speed, accuracy and reliability of real-time, on-line quality control and opacity detection. Say goodbye to defects, wasted product, recalls and more, and watch efficiency and productivity soar.

For more information on using the OPAX-1000 with your current processes, call us at 216.518.9888 today, or visit our main website at, where you’ll find a demonstration video, product request forms and more specifications and details on this versatile solution.