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Liquid Analysis
pH Meter for Water
Engineered for Accurate and Professional Water Analysis
The Instrava pH Meter for Water is designed for precise electrochemical analysis across laboratory, industrial, and environmental monitoring applications.
With an extended pH measurement range from -2.00 to 20.00 pH and accuracy up to ±0.01 pH, the instrument ensures reliable measurement across acidic, neutral, and alkaline conditions. Automatic temperature compensation, multi-point calibration, and dual international buffer recognition (USA / NIST) provide consistent and traceable results.
Built with data storage, USB communication, and intelligent endpoint locking, this meter is engineered for professionals who require dependable, documented measurement performance.
Liquid Level Switch Description
pH Meter for Water-Applicable Scenarios
Instrava pH Meter for Water is suitable for:
Industrial water quality testing
Wastewater treatment monitoring
Drinking water analysis
Environmental field sampling
Laboratory chemical testing
Aquaculture and agricultural water control
Process quality verification
Its wide measurement range and temperature compensation capability allow use in both standard and extreme pH environments.
pH Meter for Water-Engineering Advantages
High-Accuracy Full-Range Measurement
Measurement range: -2.00 to 20.00 pH
Resolution: 0.01 pH
Accuracy: ±0.01 pH
Provides laboratory-grade precision for demanding analytical applications.
Intelligent Calibration & Buffer Recognition
1 to 3 point calibration
Automatic recognition of USA and NIST buffer standards
Real-time slope and offset display
Ensures compliance with international calibration practices while enhancing linearity and measurement confidence.
Automatic Temperature Compensation (ATC)
Temperature range: 0 – 105°C
Automatic or manual compensation
Compensation range: 0 – 100°C
Maintains measurement stability across fluctuating temperature conditions and improves repeatability in process environments.
Data Management & Connectivity
Stores up to 100 measurement records
USB interface for PC data transfer
Manual or automatic endpoint data lock
Factory reset function for rapid configuration recovery
Supports traceable documentation and simplified reporting workflows.
Energy-Efficient & Flexible Power Supply
Auto power-off after 30 minutes of inactivity
Powered by DC 5V adapter or 3 × AA batteries
Suitable for both laboratory bench use and portable field deployment.
Liquid Level Switch Parameter
pH Meter for Water-Technical Specifications
pH Measurement
| Parameter | Specification |
|---|---|
| Measurement Range | -2.00 – 20.00 pH |
| Resolution | 0.01 pH |
| Accuracy | ±0.01 pH |
| Calibration Points | 1 – 3 points |
| Buffer Options | USA (4.01 / 7.00 / 10.01), NIST (4.01 / 6.86 / 9.18) |
| Slope & Offset Display | Yes |
| Data Lock | Manual or Automatic Endpoint |
Temperature Measurement
| Parameter | Specification |
|---|---|
| Measurement Range | 0 – 105°C (32 – 221°F) |
| Resolution | 0.1°C / 0.1°F |
| Accuracy | ±0.5°C / ±0.9°F |
| Offset Calibration | 1 point (±10°C adjustment) |
| Temperature Compensation | Manual or Automatic |
| Compensation Range | 0 – 100°C |
System & General Specifications
| Parameter | Specification |
|---|---|
| Data Storage | 100 records |
| Communication Output | USB interface |
| Auto Power-Off | After 30 minutes |
| Reset Function | Factory default restoration |
| Power Supply | DC 5V adapter or 3 × AA batteries |
Designed for Professional Water Monitoring
Instrava focuses on delivering reliable analytical instruments for water quality measurement across industrial and environmental sectors.
By combining high-precision sensing, intelligent calibration, temperature compensation, and digital data management, the Instrava pH Meter for Water supports accurate decision-making in quality control, regulatory compliance, and process optimization.
Instrava OEM/ODM
Instrava Engineering & Customization Support
At Instrava, our instruments are developed with a strong focus on real industrial applications. Each product is designed to operate as a reliable component within measurement, control, and automation systems, rather than as a standalone device.
Our engineering team supports customers during product selection by evaluating process conditions, operating environments, and system requirements, ensuring stable and long-term performance in actual use.
In addition to standard configurations, Instrava offers flexible customization options, including measurement range, materials, output signals, communication interfaces, and installation methods. All custom solutions are engineered to meet industrial standards and application-specific demands.
We also support OEM projects and system integration, providing consistent product design, technical documentation, and long-term supply to ensure smooth integration and reliable operation throughout the project lifecycle.
pH measurement is temperature dependent because electrode slope varies with temperature according to the Nernst equation.
The integrated ATC function continuously adjusts the slope calculation based on measured temperature, ensuring accurate pH values across 0–100°C compensation range.
Without proper compensation, measurement deviation can increase significantly in high-temperature environments.
Manual temperature compensation is recommended when:
Using non-standard electrodes without integrated temperature sensors
Measuring samples where temperature stabilization is delayed
Conducting calibration under controlled laboratory conditions
Manual input allows controlled correction when automatic sensing is not preferred.
Calibration frequency depends on process criticality:
Daily calibration for laboratory or compliance-sensitive testing
Weekly calibration for routine industrial water monitoring
Before critical audits or validation measurements
The 1–3 point calibration system with automatic USA/NIST buffer recognition ensures traceable and standardized calibration procedures.
Yes.
With an extended measurement range of -2.00 to 20.00 pH, the instrument supports extreme acidity and alkalinity testing. However:
Proper electrode selection is critical
Regular calibration is essential at extreme ranges
Electrode chemical compatibility must be verified
Performance at extreme pH depends primarily on electrode condition and correct calibration.
The instrument displays real-time slope and offset values during calibration.
Abnormal slope values may indicate electrode aging
Excessive offset may suggest contamination or reference junction issues
Monitoring these parameters allows preventive maintenance and ensures long-term measurement reliability.
The meter includes a USB communication interface for PC data transfer.
Stored data (up to 100 records) can be exported for:
Laboratory documentation
Compliance reporting
Process trend analysis
Quality control traceability
This supports structured data management in regulated industrial environments.
Why Choose Instrava
By choosing Instrava, you gain a partner with a deep understanding of industrial applications and the expertise to meet today’s operational challenges.
Our role extends beyond products—we support your success through dependable solutions and long-term commitment.
Engineering-Driven Innovation
Innovation at Instrava is guided by real industrial requirements. We continuously refine our technologies to address evolving operational challenges, ensuring practical and reliable performance in demanding environments.
Application-Specific Customization
We provide engineering-level customization to match specific process conditions. From measurement range and materials to output signals and installation options, our solutions are configured to fit real applications.
Proven Quality and Reliability
Quality and reliability are fundamental to every Instrava product. Manufactured under strict quality control and thoroughly tested, our instruments deliver accurate, stable, and long-term performance.
Global Capability with Local Support
Instrava combines global engineering expertise with responsive local support, ensuring our partners benefit from internationally aligned technology and timely regional service.
Comprehensive Product Portfolio
Our broad portfolio of measurement and control instruments enables us to address a wide range of industrial needs, providing integrated solutions from a single, reliable source.
Partner-Oriented Engineering Support
We work closely with our partners from technical consultation to after-sales support. Our focus is on delivering solutions that create lasting value and support long-term operational success.
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