GreenPrima BSens130 High-Temperature Sterilizable pH Electrode
| Brand | GreenPrima |
|---|---|
| Origin | Switzerland |
| Manufacturer Type | OEM Manufacturer |
| Origin Category | Imported |
| Model | BSens130 |
| Measuring Range | 0–14 pH |
| Operating Temperature | −5 to 135 °C |
| Resolution | 0.01 pH |
| Accuracy | ±0.01 pH |
| Max. Pressure Rating | 10 bar |
| Sensing Element | AH-Type Glass Bulb |
| Reference System | Integrated Gel-Filled Reference |
| Electrolyte | Polymer-Gel Electrolyte |
| Connector | S8 Plug |
| Thread Size | PG13.5 |
| Cable Length Options | 5 m, 10 m, or Custom |
Overview
The GreenPrima BSens130 is a high-performance, sterilizable composite pH electrode engineered for continuous and reliable operation in demanding industrial bioprocessing and environmental monitoring applications. Based on the Couette-type glass membrane principle with an integrated Ag/AgCl reference system, the BSens130 employs a proprietary AH-glass formulation optimized for thermal stability, chemical resistance, and rapid response kinetics across extreme temperature gradients. Unlike conventional liquid-filled electrodes, its polymer-gel electrolyte eliminates leakage, diffusion drift, and junction clogging—critical advantages in high-pressure steam-in-place (SIP) sterilization cycles, aerobic/anaerobic fermentation vessels, and hot effluent streams where temperatures routinely exceed 120 °C. Designed for direct integration into online automatic water quality monitoring systems, the BSens130 complies with ISO 7027-1:2022 (for sensor interface compatibility) and meets mechanical requirements defined in EN 61000-6-2 (immunity) and EN 61000-6-4 (emission) for industrial instrumentation.
Key Features
- High-temperature capability: Stable calibration and signal integrity from −5 °C to 135 °C, validated per IEC 60751 Class B tolerance limits for embedded temperature compensation elements;
- AH-glass sensing bulb: Chemically hardened glass composition with low alkali error and reduced sodium ion interference below pH 2 at elevated temperatures;
- Gel-filled reference system: Non-leaching, low-resistance polymer gel electrolyte ensures long-term potential stability and eliminates need for refilling or maintenance during SIP cycles;
- Pressure-rated construction: Robust PG13.5 threaded housing rated to 10 bar static pressure, suitable for pressurized bioreactors and closed-loop cooling water systems;
- S8 plug interface: IP68-rated connector with gold-plated contacts for low-noise signal transmission and corrosion resistance in humid or saline environments;
- Modular cable options: Factory-terminated shielded cables (5 m or 10 m standard) with optional custom lengths and TPE jacketing for UV and hydrocarbon resistance.
Sample Compatibility & Compliance
The BSens130 is validated for use in aqueous matrices including fermentation broths (e.g., yeast, bacterial, and mammalian cell cultures), municipal and industrial wastewater, boiler feedwater, geothermal effluents, and pharmaceutical process streams. It exhibits minimal drift in presence of sulfides, proteins, or ethanol concentrations up to 15% v/v. The electrode complies with FDA 21 CFR Part 11 requirements when paired with compliant data acquisition systems supporting electronic signature and audit trail functionality. Its design adheres to ASTM D1293–22 (Standard Test Method for pH of Water) and supports GLP/GMP traceability protocols through calibrated temperature-compensated output (Pt1000 integrated). No hazardous substances are used in manufacturing; RoHS 2011/65/EU and REACH SVHC declarations are available upon request.
Software & Data Management
The BSens130 delivers analog mV output (±600 mV) and integrated Pt1000 RTD signals compatible with all major industrial pH transmitters (e.g., Endress+Hauser Liquiline CM44P, Siemens Desigo CC, Yokogawa FLXA402). When connected to GreenPrima’s optional SmartCal™ interface module, it enables automated two-point calibration verification, drift trending, and predictive maintenance alerts via Modbus TCP or HART 7. All calibration events, temperature logs, and diagnostic flags are timestamped and exportable in CSV or XML formats—fully aligned with ISO/IEC 17025:2017 data integrity clauses. Firmware updates and configuration parameters are managed remotely without physical access, reducing downtime during validation intervals.
Applications
- Real-time pH monitoring in stainless-steel fermenters undergoing repeated 121 °C, 30-minute SIP cycles;
- In-line control of anaerobic digestion reactors operating at 55 °C with high VFA loadings;
- Continuous compliance monitoring of thermal discharge points in power plant cooling systems;
- Pharmaceutical clean-in-place (CIP) and sterilize-in-place (SIP) validation support;
- Long-term deployment in municipal wastewater treatment plants with fluctuating redox conditions and suspended solids;
- Research-grade pH profiling in high-temperature geochemical simulation cells.
FAQ
Can the BSens130 be autoclaved repeatedly without recalibration?
Yes—validated for ≥200 cycles of saturated steam sterilization at 121 °C, 1 bar gauge pressure. Calibration stability remains within ±0.02 pH post-cycle when using GreenPrima’s recommended storage solution (3 mol/L KCl + 0.1 mol/L NaOH).
Is the S8 connector compatible with legacy transmitter installations?
The S8 interface conforms to DIN 40110-2 and is mechanically and electrically interoperable with legacy GreenPrima, Knick, and ABB transmitters equipped with S8 receptacles. Adapter kits for M12 or BNC interfaces are available.
What is the expected service life under continuous 100 °C operation?
Typical operational lifetime exceeds 18 months under constant 100 °C exposure with daily calibration checks. Lifetime is extended by >40% when operated below 80 °C average temperature.
Does the electrode require special cleaning procedures after protein-rich media exposure?
A 10-minute soak in 5% pepsin solution (pH 1.5) followed by rinsing with deionized water effectively removes biofilm without damaging the AH-glass surface. Avoid abrasive brushes or organic solvents.
