Product Highlight: SE 515

January 26, 2018
Category: Product Highlight

SE 515 Memosens pH Sensor

pH Sensor for Simple Water Applications

The SE 515 Memosens pH sensor is ideal for use in water and wastewater treatment applications.

The sensor is designed to withstand plugging media, low temperatures, and to maintain a reliable measurement in low-ionic media. An integrated NTC 30K temperature element assures that all pH measurements are accurately compensated for the temperature of the process media. The low price of this sensor, along with the integration of Memosens techno... Continue reading

Tags: SE 515 Water Water Treatment pH Memosens

Raw Water Inlet Monitoring

January 25, 2018
Category: Application Success Story
Reduced Operational Costs in Raw Water with Pre-calibrated
pH and ORP Memosens Sensors

The raw water inlet is an important point in the water treatment process. Reliable pH and ORP measurements are necessary for proper operation of the facility. Raw water comes from storm drains, rivers, ponds, and lakes and contain a variety of contaminants. The pH and ORP sensors must be able withstand the process and still provide a reliable measurement.

The SE 515 Memosens pH sensor is specifically designed for use in water treatme... Continue reading

Tags: Raw Water Water Water Treatment pH ORP SE 515 SE 564 Memosens

How many pH sensors did we throw away last month?

November 09, 2017
Category: Memosens
The value of enhanced sensor diagnostics

Remember when it was the screech under the hood or the burning oil smell that told you something was wrong with your car? What did we do before our cars told us it was time for service? We didn’t just get rid of our car and buy a new one, we brought it to the mechanic for evaluation and repair.  

Today, we have clear diagnostics on our car’s dashboard that pinpoint the problem and indicate when it’s time for service. The same benefit is available with Memosens smart pH sensor te... Continue reading

Tags: Memosens portable meter Portavo Protos Stratos transmitter analyzer

Wet Gas Scrubbers pH Control

October 18, 2017
Category: Application Success Story
Environmental Safety through Critical pH Control 

Wet gas scrubber systems, also known as chemical scrubbers or gas scrubbers, are a type of air pollution control system that removes particles and hazardous gases from industrial exhaust streams.    

The scrubber uses caustic liquids and injects them into the ventilation stack. This traps particulates and neutralizes the acid in the gas stream which then falls down to the bottom of the stack. The liquid that is collected is then sent to the wastewater treatment pla... Continue reading

Tags: pH transmitter portable meter calibration gas scrubber scrubber wet gas

Conductivity, ORP and pH Measurements in Reverse Osmosis Systems

September 01, 2017
Category: Application Success Story
Better Chemical Dosing Control Extends  Filtration Membrane Life

Reverse Osmosis (RO) is a purification process which removes Total Dissolved Solids (TDS) in water by applying pressure to feedwater, forcing it through a semi-permeable membrane and allowing pure water to diffuse.

Conductivity is an important measurement for RO. Having the ability to measure a very low conductivity accurately is critical. Using a conductivity electrode is a common way to test RO water quality and membrane performance. Ultra pure water is... Continue reading

Tags: Reverse Osmosis Conductivity ORP pH

How accurate is my pH sensor?

August 25, 2017
Category: Memosens

You should be asking, how accurate is my calibration procedure?

When there is an issue with pH measurement accuracy the blame is typically laid squarely on the sensor. However, calibration procedure and execution can be equally to blame. Below you will find some helpful hints that will assure you produce a repeatable, accurate calibration.


Before we dig in, let’s look at some of the key components to a successful calibration procedure:

Fresh, clean calibration standards (Buffers) and rinsing solutionpH senso... Continue reading
Tags: offline calibration pH Portavo buffer set buffers sensor data logging diagnostics

Heat Exchanger Breakthrough Detection

August 07, 2017
Category: Application Success Story
Fast and Reliable Detection with Memosens Conductivity

Heat exchangers are used throughout many industrial plants to cool and convert steam into condensate. Once the steam has turned to condensate, it’s purity is high and conductivity value is low. Condensate contamination is very costly and affects efficient operation of the plant, or even worse, the contamination can cause environmental pollution. Monitoring the conductivity of the condensate leaving the heat exchanger is a reliable method to ensure the heat exchanger is functioning pro... Continue reading

Tags: Heat Exchanger Memosens Transmitters MemoRail CSS 120 Conductivity Static Holders

It’s 3:00 AM and I’m Out Calibrating a pH Sensor

July 13, 2017
Category: Memosens

Author: Shawn Little

Whether you are on 1st, 2nd, or 3rd shift, calibrating sensors seems to always happen at the worst time. It’s pouring down rain, snowing, +100º heat at noon, or below freezing in the middle of the night. I’d rather be in a climate controlled shop doing calibrations at a time I planned. Wouldn’t you?  To me that’s a no-brainer!

In fact there are three no-brainers to me when it comes to pH calibrations:

It’s easier to calibrate a pH sensor in the shop or lab
It’s... Continue reading

CIP & SIP Process Conductivity Measurements

June 23, 2017
Category: Application Success Story
Improving Efficiency with Reliable Conductivity Measurements — CIP Cleaning Agent Control and Rinse Water Purity Monitoring

Conductivity measurements are used to control the CIP process as well as monitor the purity of the water used during rinsing cycles. Unreliable measurements can cause downtime or even worse, contaminated batches due to leftover product or detergents.

M4 Knick’s SE 680 Memosens® toroidal conductivity sensor is a great choice for integration into the rinsi... Continue reading


It’s Probably the Cable!

May 31, 2017
Category: Memosens

In the pH business, most measurement performance issues are blamed on the sensor. The sensor is the primary measurement element of the loop and is directly exposed to the process. Therefore, it must be the source of the problem, right?

In my experience, most pH problems are typically caused by something more rudimentary. It is these two factors that are oftentimes overlooked – sensor connections and cables.

In this post, I’ll be focusing on the cable. Continue reading

Tags: Memosens cable coax coaxial pain

Industrial Wastewater

May 10, 2017
Category: Application Success Story
Confidently Meeting Environmental Compliance Requirements — Wastewater pH, ORP, and dissolved oxygen monitoring

Depending on the feed entering the wastewater facility there can be a wide range of pH. Very low pH liquids can damage parts of the treatment system and potentially kill the good bacteria in the clarifier. Knowing in advance that low pH liquid is entering the process allows the operators to divert influent to protect the system. Because the SE 555 pH electrode is designed for dif... Continue reading


Remote pH Monitoring

April 26, 2017
Category: Application Success Story
Antiquated  Analog Technology vs. M4 Knick Digital Loop — Utilizing a Solar-Powered Engineer Solution

With traditional analog pH/ORP technology there are a number of challenges customers face.

An analog connection to the sensor is typically not submersible. M4 Knick’s digital Memosens® sensor connections are inductive. This is unlike all other digital and analog systems which use a conductive non-submersible connection. To get around this manufacturers will “pot” the cable into the sensor which forces the customer to completel... Continue reading


Powerful Compact Analyzer Boosts Performance while Reducing Costs

April 12, 2017
Category: Memosens

It has long been common practice when making pH/ORP, conductivity, and oxygen measurements that a fixed analyzer be mounted near the sensor.  The analyzer serves several purposes.  It is the display, the calibration tool, and the source of the output signals for data collection.

Analyzers represent a significant portion of the loop cost when making these measurements.  The cost shows up as the following pain points:

Limited functionality and flexibilityInstallationPurchase price of the analyzer

Many end-users of... Continue reading


Boiler Water Monitoring

March 10, 2017
Category: Application Success Story
Water Quality Monitoring to Optimize Boiler Performance — Using pH, DO, and Conductivity

An important component of steam boilers are the tubes. The pH of the boiler water is normally kept alkaline to facilitate the formation of a thin oxide layer on the tubes. This oxide layer acts as a protective barrier against corrosion. Sodium phosphate & sodium hydroxide are used to promote this oxide formation, but too much of these chemicals can cause problems. Accurate pH monitoring can help prevent these issues. M4 Knick’s SE 558 pH electrode... Continue reading


How Can a Toothbrush Make Your pH Measurement More Reliable

March 10, 2017
Category: Memosens

Author: Shawn Little

OK, OK, a toothbrush isn’t part of pH measurement (unless you’re using one to clean your sensors…not recommended!). However, inductive charging technology introduced by Braun's Oral-B electric toothbrush was a precursor to ground breaking improvements in in-line pH/ORP, oxygen, and conductivity sensors.  

If you’re not using inductive technology for dental hygiene, it’s possible you’re using it for other portable device charging. This charging method has now become a... Continue reading


Does the p in pH Stand for Pain

February 20, 2017
Category: Memosens

Author: Shawn Little

I’ve been on the road for the last four years talking about almost nothing but pH (my wife and kids would find that extremely boring…if they actually knew what I did for a living).  During my time in planes, trains, automobiles, and in chemical plants, refineries, power plants, and what have you, I’ve learned something real. Making pH measurements is so painful that it no longer hurts.  You know what I mean? It’s like that ache from an old injury, or just old age, that you know is there b... Continue reading


Cooling Tower Monitoring

February 10, 2017
Category: Application Success Story
Critical Analytical Measurements Prevent Downtime — Using the Digital pH, ORP, and Conductivity Monitoring Trifecta

Cooling towers require an acid addition like sulfuric for pH adjustment to dissolve the calcium carbonate that builds up from high salts in the system. By dissolving the calcium carbonate it reduces scaling which helps the system efficiency. By monitoring the pH adjustment with a digital Memosens® sensor such as the SE 555, better corrosion control and earlier detection of process breakthrough is achievable.

As part... Continue reading


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