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Nexisense HG808-H | Precision Fermentation Humidity Control
The Importance of Humidity Control in Fermentation
In fields like food brewing, biopharmaceuticals, and organic fertilizer production, humidity directlyaffects microbial activity, enzyme efficiency, and product quality. Generally, 80–90% RH provides the optimal conditions for microbial growth. However, conventional humidity sensors often fail under such high-moisture environments—suffering from condensation, corrosion, and readingdrift—resulting in humidity errors exceeding 5%. Excessive humidity leads to mold and spoilage, while insufficient humidity suppresses enzyme activity, reducing both yield and flavor quality.
Definition and Application Positioning of Nexisense HG808-H
The Nexisense HG808-H is a high-precision temperature and humidity transmitter designed for environments with high humidity, corrosion, and dust exposure. It is widely applied in soysauce brewing, rice wine, beer, antibiotic production, and organic fertilizer fermentation. Its mission is to deliver “accurate measurement + stable output + intelligent control” under humidity levels exceeding 80% RH—creating a quantifiable and controllable foundation for fermentation management.
Measurement Principle: From Sensing to Closed-Loop Control
The HG808-H employs a high-sensitivity polymer capacitive humidity sensor, which detects minute capacitance changes caused by humidity variations, achieving ±2% RH accuracy (@23°C).
Automatic Temperature Compensation: Corrects humidity readings in fluctuating temperatures (28–35°C), ensuring long-term stability within ±1% RH per year.
Real-Time Response: 1-second samplingrate captures continuous humidity fluctuations for dynamic control.
Dew Point Calculation: Simultaneously outputs dew point data, aiding condensation control and ventilation optimization.
These features allow the HG808-H to maintain linear and stable outputs even in extreme humidity,forming a complete “accurate detection–rapid adjustment–stable control” loop.
Structural Design: Engineered for Harsh Environments
The HG808-H is built with a triple-layer protection system:
Corrosion-Resistant Probe – Models 0B#, 3B#, and 6B# use acid–alkali resistant coatings to withstand organic acids and ammoniagas during fermentation.
Dust-Resistant Filter Shield – Preventsclogging from powder or spores, ensuring long-term permeability.
Anti-Condensation Circuit – Moisture-sealed circuitry prevents short circuits even under 95% RH.
With its compact form,robust corrosion resistance, and easy installation, it ensures stable operation near fermentation tanks or humid workshops—significantly reducing maintenance frequency and cost.
Measurement Modes and Smart Output: Toward Automated Humidity Regulation
The HG808-H supports multipleoutput options:
Analog Signals: 4–20mA / 0–5V / 0–10V, directly connectable to PLC systems.
Digital Output: Temperature, humidity, dew point, and PPM data can be transmitted in real time to a central control system.
By setting humidity thresholds, the device enables automatic ventilation and spray humidification. For example, insoy sauce fermentation’s later stages, an upper limit of 88% RH can trigger dehumidifiers automatically, while readings below 85% RH activate misting—achieving fully automated, unattended fermentation management.
Furthermore, itsdata logging and trend analysis features help technicians refine fermentation curves, improving both yield and flavor consistency.
Technical Advantages and Verified Results
Superior High-Humidity Accuracy: Maintains ±2% RH within 80–95% RH—well above industry standards.
Extended Lifespan: Sensor head durability exceeds 2 years,eight times longer than conventional units.
High Compatibility: Integrates seamlessly with industrial control systems for digital and networked humidity management.
Proven Industrial Benefits: A soysauce factory in Jiangsu reported mold rates dropping from 8% to 1%, amino acid nitrogen increasing by 0.2g/100mL, and annual output value rising by 20% after adopting HG808-H.
Conclusion
As fermentation industries evolve toward digital and intelligent production, the Nexisense HG808-H High-Humidity Temperatureand Humidity Transmitter emerges as a key enabler of precision fermentation. With its advanced sensing principles, corrosion-resistant structure, and smart control capabilities, it provides a complete closed-loop solution from environmental sensing to humidity regulation.
For food, biopharmaceutical, and organic fertilizer enterprises, the HG808-H is not just a sensor—itis a reliable partner in quality assurance and productivity enhancement.
