Ryton Body Flat Surface Electrode – FLS pH 800
The FLS 870 pH electrode line is designed for superior performance in demanding industrial applications. Built with a rugged Ryton body and an auto-cleaning flat pH surface, it ensures accurate and reliable measurement even in dirty liquids and aggressive solutions. A built-in Pt1000 temperature sensor enhances precision, while the wide junction design improves stability in the presence of suspended solids. The 870 electrodes feature a ¾” threaded connection, allowing easy in-line installation from the electrode bottom or submersible mounting from the electrode head. Specialized versions are available for unique requirements, including horizontal mounting (-HM), low-conductivity samples (-LC), and aggressive environments with HF <2% or low pH (-HF). A versatile and durable solution for continuous monitoring.
Ryton Body Flat Surface Electrode – FLS pH 800
Key Features Of Ryton Body Flat Surface Electrode – FLS pH 800
- Temperature sensor combined
- Flat surface electrodes
- Tough Ryton body
- Double threaded body for in line and submersion installation
- Double junction technology
- HM option for horizontal mounting
- HF option for liquids with HF (max 2%)
- LC option for liquid with a conductivity lower than 100µS/cm

Technical Details of Ryton Body Flat Surface Electrode – FLS pH 800
Specification | Details |
---|---|
Operating Range | pH Electrodes: 0-14 pH (0-12.3 pH without Na⁺ error) |
Pipe Size Range | DN15 to DN100 (0.5” to 4”) |
Zero voltage point new electrode performances | 7.00 pH ± 0.2 pH |
Efficiency new electrode performances | > 97% @ 25°C (77°F) |
Response time new electrode performances | pH: < 6 sec for 95% of signal change |
Type | Sealed double junction |
Electrolyte | Solidified Gel 3.5M KCl 0.1M KCl for LC electrode version / solidified gel KCl 3.5M |
Secondary junction | Nylon filament |
Wire | Ag/AgCl |
Type | 3/4” NPT threaded body for submersion or in-line installation |
Max Working Pressure / Temperature | 6.7 bar @ 75°C (100 psi @ 170°F) 5.7 bar @ 81°C (85 psi @ 180°F) 3.3 bar @ 100°C (50 psi @ 212°F) |
Wetted Materials | Body – PPS (Ryton®), HDPE, pH Glass, leaded glass Reference Junction – Porous HDPE Sensing Surface – Glass membrane |
Manufactured under | ISO 9001, ISO 14001 |
Certification | CE, EAC |

Part No. | Description / Name | Applications / Operative Range | Cable (sold separately) | Connection | Installation | Weight (gr.) |
---|---|---|---|---|---|---|
PH870CDTC | Ryton double junction flat surface pH electrode with Pt1000 | 0 – 14 pH (0 – 12.3 pH without Na⁺ error) | Not required | 5 mt (16.5 ft) | 3/4” NPT | 250 |
PH870CDTCHM | Ryton double junction flat surface pH electrode with Pt1000 | 0 – 14 pH (0 – 12.3 pH without Na⁺ error) / Horizontal mounting | Not required | 5 mt (16.5 ft) | 3/4” NPT | 250 |
PH870CDTCLC | Ryton double junction flat surface pH electrode with Pt1000 | 0 – 14 pH (0 – 12.3 pH without Na⁺ error) / Low conductivity (10 µS/cm < conductivity < 100 µS/cm) | Not required | 5 mt (16.5 ft) | 3/4” NPT | 250 |
PH870CDTCHF | Ryton double junction flat surface pH electrode with Pt1000 | 0 – 14 pH (0 – 12.3 pH without Na⁺ error) / Presence of HF (max 2%) | Not required | 5 mt (16.5 ft) | 3/4” NPT | 250 |
1 – Cable: 5 m (16,5 ft)
2 – Ryton body
3 – Flat pH glass
4 – Porous HDPE junction
5 – Temperature sensor inside pH stem
6 – 3⁄4” NPT threads
7 – Wrench flat
Ryton Body Flat Surface Electrode – FLS pH 800
Technical Specifications of Ryton Body Flat Surface Electrode – FLS pH 800

Custom Product Manufacturing Available
If you are searching for customized product designs that meet your requirements, don’t worry. Petron Thermoplast also offers custom product manufacturing services to meet the unique needs of various industries. Work with our expert engineers to create custom designs suited for your application.