What is the shelf life of your pH sensors?
All pH sensors from M4 Knick come with a minimum 2-year shelf life.
How often is calibration required with your pH sensors?
Calibration frequency depends on the application conditions (temperature, pH range, suspended solids) and the user's preferred maintenance practices. Implementing the correct sensor type for the application will also reduce calibration frequency.
The Portavo portable meter produces more reliable calibration results for offline calibration of Memosens smart digital sensors.
How long will your pH sensor last in my process?
The specific application effects sensor longevity. It is important for the user to use the correct sensor for the application. In addition, Memosens smart digital technology provides sensor diagnostics to technicians. The information provides sensor conditions and suggests if sensors should be serviced or replaced.
Does M4 Knick offer a non-glass pH sensor?
Yes, M4 Knick offers pH sensors that are non-glass. An
ISFET pH sensor made of FDA-compliant PEEK as well as a line of Glasteel™ sensors manufactured with a rugged enamel material.
Are your pH sensors temperature compensated?
Yes, most pH sensors from M4 Knick come with an integrated temperature detector for automatic compensation of the pH measurement. There are analog sensors in our product range that are available without integrated temperature compensation.
How do I calibrate pH sensors from M4 Knick?
You can calibrate M4 Knick pH sensors in several ways.
You can utilize the traditional method of calibrating a sensor with a field mounted transmitter. You can also take advantage of the ability to calibrate offline, when using Memosens smart digital sensors, by using either our
Portavo portable meters or our Memosuite sensor management software.
What makes pH sensors from M4 Knick different?
Some pH sensors from M4 Knick use a patented Silamid reference system. The most common type of reference system is a silver wire coated in AgCl. A Silamid® reference system is not an exposed Ag/AgCl wire. The tube has an internal silver coating and AgCl packed. On the end of the glass tube there is a junction which adds a second layer of protection of the reference system and allows the sensor to prolong the poisoning or interference of the reference in comparison to the standard reference wire.
What is our maximum temperature specification?
We have sensors for a wide variety of pH applications. Depending on the model, our sensors handle CIP/SIP cycles up to 284°F (140°C). Our Glasteel™ line of pH sensors are available with extended temperature specifications, please call us to discuss your application requirements.
What is our maximum pressure specification?
We have sensors for a wide variety of pH applications. Depending on the model, our sensors handle pressures up to 174 psi (12 bar). We even have some versions of our Glasteel™sensors able to handle pressures up to 1,500 psi (103 bar).
How do our sensors handle buildup?
Buildup on any pH sensor over time can impact the measurement. M4 Knick has sensors with specific junction/diaphragm and reference designs to provide stable measurements even with some buildup. We also have multiple options for integrated cleaning of the sensor within our holders and flow cells.
Can you install a pH sensor from M4 Knick upside down?
It is recommended that users mount glass pH sensors sensor at least 15°above horizontal. Some of our
Glasteel™ sensors and
ISFET sensor are mountable in any orientation, including upside down.
