31050381 HONEYWVELL Flame Detector Sensing Head

Product Description (Detailed Explanation)

The Honeywell 31050381 is a glass combination pH electrode that utilizes the proprietary Meredian technology. Unlike standard laboratory sensors, this industrial-grade probe is built to withstand harsh chemical environments, high pressures, and varying temperatures.

It features an integrated Automatic Temperature Compensator (ATC), which ensures that pH readings are corrected for temperature fluctuations in real-time. The “Combination” aspect means both the measuring electrode and the reference electrode are housed in a single body, simplifying installation into process piping or tanks.

Product Parameters (Technical Specifications)

Product Advantages (Key Benefits)

• Automatic Temperature Compensation: The built-in ATC eliminates the need for separate temperature probes, reducing wiring complexity and improving accuracy.

• Meredian Reference System: Features a unique large-surface-area reference junction that is highly resistant to “plugging” or fouling from suspended solids and oils.

• Ruggedized Design: Encapsulated in a chemically resistant body, making it suitable for aggressive process fluids that would destroy standard sensors.

• Versatile Installation: The threaded design and long cable allow for direct immersion or mounting within flow-through and insertion/removal assemblies (like the Honeywell 7774).

• Stable Readings: Optimized internal geometry provides a fast response time and low-drift performance even in fluctuating process conditions.

Precautions (Important Notes)

• Hydration Required: The pH-sensitive glass bulb must stay hydrated. Never store the electrode dry; always use a storage solution (usually 4M KCl) in the protective cap.

• Pressure Limits: Do not exceed the maximum pressure rating, especially at high temperatures, as this can cause the glass bulb to crack or the reference seal to fail.

• Avoid Dehydration: If the process involves periods where the sensor is not submerged (e.g., empty tanks), ensure the sensor is rinsed and kept moist to prevent the reference junction from drying out.

• Chemical Compatibility: While Ryton is highly resistant, check compatibility if using with highly concentrated hydrofluoric acid (HF), as it can etch the glass sensing bulb.

Product Applications (Typical Use Cases)

• Wastewater Treatment: Monitoring influent and effluent pH levels to ensure environmental compliance.

• Chemical Processing: Controlling neutralization tanks where strong acids or bases are mixed.

• Cooling Towers: Monitoring pH to manage scale and corrosion in industrial heat exchangers.

• Pulp and Paper: Measuring acidity in whitewater or bleaching processes.

• Food & Beverage: Standard pH monitoring in CIP (Clean-In-Place) systems and ingredient mixing.