4-20mA Digital Electronic pH Sensor for Hydrofluoric Acid Environment <1000ppm with RS485 Output and 0-80°C Temperature Range
Price:
USD50-200
MOQ:
1 Unit
Delivery Time:
5-8 working days
Brand:
JUGE
Product Description
Product Overview
This digital pH sensor features a dual salt bridge design with double-layer permeable interface, providing excellent resistance to medium back infiltration. The ceramic pore-structured electrode exudation interface offers superior anti-clogging performance, while the high-strength glass bulb design enhances structural durability. Specifically engineered for hydrofluoric acid (HF) environments with concentrations below 1000ppm, the electrode incorporates an ultra-low impedance sensitive glass membrane for rapid response, measurement accuracy, excellent stability, and hydrolysis resistance.
Key Features
- Spherical sensing bulb: Enlarges sensitive areas for faster response and stable signals
- PA+GF housing: Withstands high temperatures from 0-80°C
- Quad-core shielded cable: High-quality dedicated wiring ensures precise signal transmission
- Dual output options: RS485 & 4-20mA connectivity
- IP68 protection: Complete dust protection and continuous immersion capability
Technical Specifications
| Parameter | Specification |
|---|---|
| Power Supply | 9-36VDC |
| Output Signal | RS485 & 4-20mA |
| Measurement Material | Glass/Silver + Silver Chloride |
| Housing Material | PP |
| Protection Rating | IP68 |
| Measurement Range | 0-14pH |
| Accuracy | ±0.05pH |
| Pressure Resistance | ≤0.6MPa |
| Temperature Compensation | NTC10K |
| Temperature Range | 0-80°C |
| Thread Size | NPT 3/4" |
| Cable Length | 10m standard (customizable) |
| Applicable Scope | Hydrofluoric acid (HF) concentration |
Installation Methods
Before use, unscrew the electrode protective cap and install with appropriate mounting bracket or accessories.
- Sidewall Installation: Ensure interface tilt angle exceeds 15 degrees
- Top Flange Installation: Note flange dimensions and electrode insertion depth
- Pipe Installation: Consider pipe diameter, flow velocity, and pressure
- Flow-Through Installation: Monitor flow velocity and pressure
- Submersion Installation: Adjust bracket length as needed
Maintenance & Care Guidelines
- Before use, unscrew protective cap and immerse electrode bulb and liquid junction in sample
- Rinse with water if salt crystals form near electrode tip
- Check for air bubbles in glass bulb by shaking electrode vertically
- Keep glass membrane hydrated for fast response
- After measurement, rinse thoroughly and add storage solution (3 mol/L KCl) to protective cap
- Ensure terminal connections remain dry
- Avoid prolonged immersion in distilled water, protein solutions, or contact with silicone grease
- For aged electrodes, soak in 10% HCl then rinse
- Regularly clean and calibrate electrode
Product Lifespan & Calibration
Under normal conditions with proper maintenance, electrodes last over 12 months. Even unused electrodes have a shelf life of 12-24 months when stored correctly. Exposure to strong acids, bases, high temperatures, or corrosive liquids may shorten lifespan.
Calibration Procedure
- Use fresh pH/ORP standard buffer solutions of appropriate concentrations
- Remove protective cap and rinse electrode with distilled water
- Set instrument to calibration mode (refer to instrument manual)
- After calibration, measure actual samples
Note: Electrodes are consumables and generally not covered by warranty. Proper maintenance is essential for optimal performance and extended service life.
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Get in Touch
Have questions about our products or want to discuss a custom order? Our team is ready to help you.
Company
Nanjing Juge Environmental Technology Co., Ltd.
Location
Building 17, No. 99 Guangli Road, Moling Subdistrict, Jiangning District, Nanjing, Jiangsu
Contact Person
Leon Chen