HH SCIENCE HH2500 Water Online Process pH Sensor High Pressure Chemical Resistant Electrode | Cylindrical Acid/Alkali-Resistant Glass Membrane
Original price was: US$485.00.US$360.00Current price is: US$360.00.
The HH SCIENCE HH2500 is a high-performance pH electrode with a reinforced cylindrical glass membrane and dual-junction pressure-resistant design, engineered for accurate measurement in aggressive chemical and high-pressure process environments.
Key Features:
- Pressure-resistant up to 6 Bar
- Acid/alkali-resistant cylindrical glass membrane
- Dual-junction system for superior anti-contamination
- Chemically inert to solvents and harsh chemicals
- IP68-rated for continuous submersion
The HH SCIENCE HH2500 is a flagship-grade pH electrode designed for demanding chemical process control applications. Built with a cylindrical acid/alkali-resistant glass membrane, the HH2500 provides a large sensing surface area and exceptional mechanical impact resistance, thanks to its membrane thickness of 0.2–0.4 mm.
Internally, it features a dual-junction reference system combined with a high-pressure-tolerant PCG polymer gel, enabling the sensor to withstand up to 6 Bar of osmotic pressure. This makes it ideal for closed systems, pressurized lines, and chemically aggressive media.
The junction can be configured with multi-porous ceramic or PTFE (Teflon) materials, offering high ion exchange efficiency and stability even in strong acid, alkali, or oxidizing agents. With IP68 waterproof construction, the HH2500 is built for long-term submersion in the harshest environments, making it a preferred solution in electroplating, wastewater, and chemical processing plants.
Key Features
- High Pressure Resistance: Operates under process pressure up to 6 Bar
- Cylindrical Acid/Alkali-Resistant Glass Membrane: Delivers strong chemical durability and mechanical resilience
- Dual-Junction Reference System: Enhanced protection against contamination and chemical attack
- Multi-Porous Junction (Ceramic/PTFE): Stable liquid junction for accurate and fast measurements
- IP68 Waterproof Rating: Ideal for submersible, continuous monitoring applications
- Full 0–14 pH Range: Suitable for universal industrial process monitoring
- Superior Drift Stability: Maintains reliable output in long-term deployments
Optional Upgrades
- Custom Insertion Length: Tailored for tank, pipeline, or system-specific installations
- Junction Customization: Upgrade to dual/triple-point ceramic or ring-shaped PTFE junction
- Connector Options: Fully customizable to suit controller and transmitter compatibility
- Cable Length Extension: Available up to 60 meters for remote sensor placement
Typical Applications
- Strong acid and alkali process line control
- Electroplating and surface treatment systems
- Electronics and semiconductor effluent monitoring
- Textile dyeing, printing, and finishing wastewater
- Industrial wastewater with oxidizers and solvents
- Harsh chemical or pharmaceutical production environments
| Measuring Range | 0–14 pH |
| Temperature Range | 0–100 °C |
| Pressure Range | 0–3 Bar (up to 6 Bar max with enhanced configuration) |
| Temperature Compensation Options | NTC 2.252K, NTC 5K, NTC 10K, NTC 22K, NTC 30K, PT100, PT1000 (optional) |
| Factory Calibrated Slope | Better than 95% |
| Membrane Resistance | < 250 MΩ |
| Zero Potential (E₀) | < ±10 mV |
| Response Time | < 10 seconds |
| Salt Bridge Type | Special multi-porous ceramic junction |
| Reference Electrolyte | PCG polymer gel (custom formulation) |
| Reference System | Double-junction reference system |
| Process Connection | PG13.5 threaded connector |
| Housing Material | Glass body |
| Insertion Lengths (Customizable) | 120 / 150 / 225 / 325 / 425 mm |
| pH Sensitive Membrane | HA (Acid/Alkali-resistant membrane) |
| Cable Connections (Customizable) | S8, S8M, S7, VP8, K8S, K2 |
| Weight | 0.3 kg |
|---|---|
| Dimensions | 20 × 6 × 6 cm |
| Junction (Salt Bridge Type) | PTFE, Ceramic Junction |
| Measurement | pH, ORP |
| Temperature Compensation Options | NTC 2.252K, NTC 5K, NTC 10K, NTC 22K, NTC 30K, PT100, PT1000 |
| Cable Connection | Integrated direct-connection cable, S8, S8M, S7, K8S, VP4, VP, K2, K9, 4 PIN |
| Application | Aquaculture & Aquarium, Environmental Monitoring, Food & Beverage, Hydroponics & Agriculture, Industrial Water & Wastewater Treatment, Laboratory & Analytical, Metallurgy & Mining, Municipal Water & Wastewater Treatment, Pool & Spa |
| Parameters | pH |
Related Products
The HH SCIENCE HH2500C is a high-performance pH electrode engineered for extreme industrial process conditions, featuring application-specific electrolytes and reinforced construction for stable, accurate measurement in chemically complex and contamination-prone environments.
Key Features:
- Application-specific electrolyte for harsh media
- Dual-junction reference for high contamination resistance
- IP68 waterproof for continuous submersion
- Chemically resistant to heavy metals and proteins
- Durable reinforced membrane with full 0–14 pH range
The HH SCIENCE HH2800C is a high-temperature pH electrode engineered for chemically complex environments, featuring media-specific electrolyte customization and enhanced anti-fouling capabilities for stable performance in high-salinity, high-protein, and heavy metal conditions.
Key Features:
- Withstands extreme high-temperature and chemical stress
- Customized electrolyte system for fouling-prone media
- Dual-junction structure enhances signal stability
- IP68 waterproof for immersion and inline use
- Excellent chemical resistance to acids, alkalis, and solvents
The HH SCIENCE HH4000 is a high-performance industrial ORP electrode with a large-area platinum ring and dual-junction reference, offering stable potential measurements across a wide range of chemical and wastewater applications, even under high-temperature conditions.
Key Features:
- Wide-range ORP measurement capability
- Dual-junction design for enhanced stability and lifespan
- IP68-rated for continuous immersion
- Large 99.99% platinum ring ensures stable redox potential
- High-temperature resistant and process-compatible
The HH SCIENCE HH2000P is a high-precision, low-impedance pH electrode engineered for stable and accurate measurement of purified water in low-conductivity environments, combining laboratory-grade sensitivity with industrial durability.
Key Features:
- Optimized for low-conductivity media (20–300 μS/cm)
- Low-impedance membrane for fast, accurate response
- IP68-rated waterproof design for submersible and inline use
- Long-path reference for superior drift and contamination resistance
- PTFE ring-shaped salt bridge ensures stable junction in flow-through applications