Going Global: Key Challenges and FAQ Solutions for a B2B pH Meter Supplier
Going Global: Key Challenges and FAQ Solutions for a B2B pH Meter Supplier The global market for electrochemical instrumentation is...
Industrial Digital pH / ORP Sensor for Continuous Process Control
The Instrava pH / ORP sensor is designed for continuous, reliable measurement of acidity, alkalinity, and oxidation-reduction potential in industrial and environmental applications.
Built for long-term stability, the sensor integrates high-accuracy electrodes with digital RS485 (Modbus RTU) communication, ensuring strong anti-interference performance and seamless integration with PLC, DCS, and water quality analyzers.
It is widely used in water treatment, chemical processing, power generation, food & beverage, and environmental monitoring, where stable pH and ORP control is critical to process safety and efficiency.
Liquid Analysis Description
pH / ORP Sensor Key Features
High-precision pH & ORP measurement
Accurate monitoring across a wide pH and ORP range for demanding industrial processes.Digital RS485 Modbus RTU output
Stable long-distance transmission with no signal drift, ideal for harsh electrical environments.Industrial-grade electrode design
Fast response, strong resistance to contamination, and long service life.Low maintenance with optional automatic cleaning
Reduces manual intervention in wastewater and chemical applications.Wide compatibility
Fully compatible with Instrava multifunction water quality analyzers and third-party control systems.
pH/ORP Sensor Applications
Industrial water and wastewater treatment
Chemical and petrochemical processes
Power plant water systems
Environmental water monitoring
Food and beverage process water
General industrial online pH and ORP measurement
Liquid Analysis Parameter
Technical Specifications – pH / ORP Sensor
| Parameter | pH Sensor | ORP Sensor |
|---|---|---|
| Measurement Range | 0 ~ 14 pH | -1999 mV ~ +1999 mV |
| Operating Temperature | 0 ~ 80 ℃ | -10 ~ 100 ℃ |
| Operating Pressure | ≤ 0.6 MPa | ≤ 0.8 MPa |
| Measurement Accuracy | pH: ±0.05 pH Temperature: ±0.5 ℃ | ORP: ±1 mV Temperature: ±0.5 ℃ |
| Temperature Sensor | NTC 2.252K | NTC 2.252K |
| Wetted Material | ABS, Glass | ABS, Glass |
| Protection Class | IP65 | IP65 |
| Sensor Dimensions | Ø26.7 × 160 mm Ø12 × 120 mm | Ø26.7 × 160 mm Ø12 × 120 mm |
| Process Connection | 3/4″ NPT, PG13.5 | 3/4″ NPT, PG13.5 |
| Signal Cable Length | 5 m standard Up to 20 m customizable | 5 m standard Up to 20 m customizable |
Instrava OEM/ODM
Instrava is your trusted supplier of Chinese products.
We can arrange customized product manufacturing to meet your growth needs, identifying high-quality factories for both OEM and ODM projects.
We can facilitate the customization of specialized products based on your project requirements (such as power-related equipment, where we can engage Chinese design institutes for product development—subject to a separate fee).
We can tailor comprehensive project upgrade solutions to your facility’s needs (such as migrating traditional instrumentation to the cloud or upgrading to technologies like Ethernet-APL).
We can source precision measurement instruments to meet your laboratory’s requirements.
And much more…
Whatever your product needs may be, we will do our utmost to fulfill them.
What is the typical service life of a pH or ORP electrode in industrial applications?
Under normal industrial water conditions, the typical service life of a pH or ORP electrode is 12–18 months. Actual lifespan depends on water quality, temperature, chemical composition, and maintenance practices.
How often should the pH ORP sensor be calibrated?
For stable industrial water, calibration is usually recommended once per month. In harsh or fluctuating process conditions, more frequent calibration (every 1–2 weeks) helps maintain measurement accuracy.
What factors most commonly reduce electrode lifespan on site?
Electrode lifespan can be shortened by high temperature, strong acids or alkalis, oil contamination, solids abrasion, and improper cleaning. Regular inspection and correct cleaning procedures significantly extend sensor life.
Can the pH ORP sensor be used directly in wastewater with suspended solids?
Yes. The sensor is suitable for wastewater applications; however, regular cleaning is recommended to prevent fouling on the glass membrane, which may affect response time and accuracy.
Is the sensor compatible with different transmitters or controllers?
The pH ORP sensor is compatible with most standard industrial pH/ORP transmitters and analyzers that support glass electrode inputs and NTC temperature compensation.
How can stable measurement be ensured in long-term online operation?
Stable long-term operation is achieved through proper installation, correct calibration, regular cleaning, and suitable electrode selection based on process conditions. Using compatible transmitters with temperature compensation further improves measurement stability.
Why Trust Instrava?
We select manufacturers from a neutral, impartial standpoint, always with your best interests in mind.
Our very existence depends on helping you source the products that are the perfect fit for your needs.
Based in China, we are able to conduct on-site inspections of production environments and product quality firsthand.
We help you avoid intermediaries posing as factories.
We facilitate smoother after-sales support, eliminating time zone issues and the delays often associated with dealing directly with factories.
Our multilingual team ensures effective communication.
For a trading startup, every interaction with a client is a precious opportunity—a sign that you are willing to place your trust in us and give us the chance to prove ourselves.
In the digital age, while information is easily accessible, misconceptions often cloud the trust between people.
Instrava relies entirely on trust; it is our core philosophy and the foundation of our existence in society. It is the fundamental basis for our long-term growth and our commitment to serving the community.
Please place your trust in us.
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