Ball Valve Retractable pH Sensor
The IC Controls model 643 pH sensor is a low-cost solution to traditional leakage problems associated with submersible pH sensors.
643 Low Pressure Ball Valve Retractable pH Sensor
- Description
- Technical Data
- Applications & Technical Articles
- Customer Reviews
- Application Review
- Drawings
Description
Reliable Submersion
The IC Controls model 643 pH sensor is a low-cost solution to traditional leakage problems associated with submersible pH sensors.
The sensor assembly is designed to work with the electronics package located in a junction box above the liquid level. The assembly is completely encapsulated and comes with a standard 3 meter (10 foot) lead. This setup achieves a reliability not previously possible with submersion pH measurement.
Benefits
- Rugged body constructed from 1 inch schedule 80 pipe
- Cushion-mounted pH electrode resists shocks
- “U” shaped body protects glass tip from breakage during calibration, cleaning and accidental impact
- Open electrode tip for easy cleaning
- Large 1 inch (25 mm) diameter reference junction surrounding pH tip resists plugging and eliminates variations in reading caused by changes in flow direction
Applications & Technical Articles
Download Article
pH/ORP Sensors in Metallurgical Applications
Critical Elements of the Sensor, Material Selection, Sensor Size Matters, Keeping Contaminants Out, Taking the Heat, Direct Connect versus Preamp.
Download ArticleCustomer Reviews
“Back in 2018 I purchased and installed four IC Controls pH sensors and transmitters at a customer’s site. It was a challenging application on two large holding tanks handling 0 and 14 pH waste water. The probes have performed great with infrequent calibrations. Today, that Plant reached out to me and requested a replacement pH sensor and a spare.”
“Yes, you can go ahead and use my application as an example of IC Controls quality and durability. For the record, when this system was constructed using two ~6000 gallon fiberglass tanks, it needed two pH sensors in each tank. No one but IC Controls said they could handle the process. These tanks are High and Low pH holding tanks. This is rinse water from various spent ion-exchange tanks with activated resin, among other sources. There are in-tank recirculating pump eductors providing agitation for accurate pH readings. The retractable pH probes are mounted 24” from the bottom of the tanks and there are two pH probes on each tank for correlation/redundancy. This system has been in constant use for over seven years with little/no maintenance except occasional calibration verifications. The pH of the tanks is extremely low and high. Typically <1 pH in the low tank >13 in the high tank. Temperatures are ambient Southern California conditions.”
from the President
Industrial Process Solutions company
Using Model 210-P-1-10-20 pH analyzer and Model 643 pH sensor
California, USA
June 2025
“The new hot-tap pH probe and analyzer … has been performing excellently since we’ve installed it, and it has made pH monitoring on the tank so much easier.”
from an Instrument Technologist
Application: CO2 Scrubber and Stormwater pH
Using Model 210-P-1-10-20 pH analyzer and Model 643 pH sensor
Saskatchewan, Canada
July 2023
This pH sensor lasted 10 years measuring the plant effluent after their waste water treatment.
from an Instrument Supervisor
Power Plant – New Brunswick, Canada
July 2020
This pH sensor lasted 7-8 years in the shock/scrubber process where they are removing Hydrogen Sulfide. The flat glass and fluted tips protect the sensor from breakage during accidental impact.
from an end user using our pH Sensor, the Model 643 in their municipal application.
March 2017
Drawings
Wiring Diagram
pH Sensor to Analyzer Connection
Electrical Schematic for Model 602, 605, 606, 607, 614, 615, 617, 625, 627, 642, 643 and 648
Wiring DiagramFor Illustration purposes only
Simple Bypass (side stream) setup
Showing isolation valve for safe sensor maintenance
For Illustration purposes only
