where expertise comes together - since 1996 -

The Largest Open Access Portal of Nondestructive Testing (NDT)

Conference Proceedings, Articles, News, Exhibition, Forum, Network and more

where expertise comes together
- since 1996 -

784 views
Technical Discussions
Richard
Richard
06:24 Mar-29-2006
pH sensor/probe

Right now, it appears that every pH sensor/probe I find requires a solution to take a reading. My problem is that in the early stages, there will be no moisture present, but may develop over time. I am looking for a sensor/probe I can put in place when the system is constructed and leave it to take periodic readings over an extended time period. The material I am working with is steel.

Am I up a creek or is there a pH probe/sensor that will perform whether or not it is in a solution?


 
 Reply 
 
Ed Ginzel
R & D, -
Materials Research Institute, Canada, Joined Nov 1998, 1303

Ed Ginzel

R & D, -
Materials Research Institute,
Canada,
Joined Nov 1998
1303
02:27 Mar-29-2006
Re: pH sensor/probe
A strange problem indeed.
pH is a log scale that measures the acidity of alkalinity of a "solution" according to Oxford Science dictionary. It is a measure of the concentration of hydrogen ions in moles per cubic decimetre. Ions are usually in solution so your problem may be a "sticky wicket".

----------- Start Original Message -----------
: Right now, it appears that every pH sensor/probe I find requires a solution to take a reading. My problem is that in the early stages, there will be no moisture present, but may develop over time. I am looking for a sensor/probe I can put in place when the system is constructed and leave it to take periodic readings over an extended time period. The material I am working with is steel.
: Am I up a creek or is there a pH probe/sensor that will perform whether or not it is in a solution?
------------ End Original Message ------------




 
 Reply 
 
Ethan
Ethan
02:48 Apr-04-2006
Re: pH sensor/probe
I have experience in designing/making ion selective probes. pH is the measurement of the Hydrogen ion activity in solution, for solutions that are less than one Molar in concentration.

You are trying to take the pH reading of a solid? Maybe we can help you solve this a different way. Could you please describe why you need this reading and we can help you work it another way?

Best Regards,
e




 
 Reply 
 

Product Spotlight

NOVO Armor 15 & NOVO Armor 22

The Armor Kit Contains the NOVO Armor, which provides additional mechanical protection to the NOVO 1
...
5WN & NOVO 22WN Detectors, the Armor Stand and a traveling soft cover. - Newest shock absorbent technology case - Water resistant design - Supports wired & wireless communication - Multiple positioning options - Tripod connection using the Built-in 1/4” threads - Simple Detector battery replacement
>

Sci Aps Z-Series Portable Handheld Analysers

The world’s only handheld analyzer that measures carbon content in stainless (yes even L-grades),s
...
teels, and cast irons. Also accepted for low Si analysis for sulfidic corrosion analysis, and is widely used in the power industry for Cr analysis, for flow accelerated corrosion applications.
>

VeeScan AirCraft Wheel Inspection

The VEESCAN offers maximum flexibility, has a proven mechanical design and records of breakdown-fr
...
ee operation of over 365 days. Appealing to companies in the Aerospace industry, the VEESCAN is ideal for all wheel-testing environments. With a wide selection of probes, the VeeScan allows your wheel testing facility the flexibility to select the most compatible configurations with their workload.
>

FAAST-PA! OEM Patented phased Array for high speed UT inspection

Multiangle, Multifocus, Multifrequency, Multibeam. Instead of stacking UT electronics and having m
...
any PA probes, FAAST-PA is able to transmit all delay laws within ONE single shot in Real time.
>

Share...
We use technical and analytics cookies to ensure that we will give you the best experience of our website - More Info
Accept
top
this is debug window