Water chemistry
Pure water, wastewater, salinity, sulfur, fluoride, heavy metals and solvents require different constructions.
XF Series · Industrial online measurement
Select the industrial pH electrode for the real process
Thirteen XF Series sensors cover general water treatment, fermentation and heat, harsh chemical media, low temperature and pure water. Published values come from the current technical files; conflicting or missing fields remain project confirmation items.
13structured models
-20–130°Cseries temperature span
4application families
0–14 pHseries measuring range
01 · Start with the process
Selection is more than a 0–14 pH range
At the same nominal range, reference design, electrolyte, glass membrane, temperature, fouling and mounting determine stability and service life.
Temperature and pressure
Provide continuous and peak temperature, working pressure and any sterilization cycle.
Mounting and maintenance
Confirm immersion, pipe or flow mounting, insertion depth, cleaning and calibration access.
Controller interface
Confirm conventional electrode input, temperature compensation or direct RS485 Modbus output.
02 · Product catalog
13 XF Series industrial pH sensors
Filter by family, then open a detail page to review the full verified specification and selection conditions.
13 models shown
General process & digitalXF240Economical industrial pH sensor
A cost-efficient industrial glass pH electrode for municipal water, wastewater, aquaculture, circulating water and water-treatment equipment.
0–14 pH0–80°CIP68
General process & digitalXF263General-purpose industrial pH sensor
A double-junction industrial electrode for strong acid and alkali processes, industrial wastewater, electroplating, dyeing and electronics.
0–14 pH0–100°C6 bar maximum
General process & digitalXF263iDigital industrial pH electrode
A pH electrode with an integrated microprocessor and direct RS485 Modbus RTU communication for water and process monitoring.
0–14 pHRS485 Modbus RTUIP68
Fermentation & high temperatureXF232Refillable fermentation pH sensor
A refillable large-chamber pH electrode for high-temperature, high-pressure fermentation and heavy-foam processes.
Refillable electrolyte0–130°CCIP / SIP
Fermentation & high temperatureXF263HTHigh-temperature fermentation pH sensor
A liquid-electrolyte pH sensor for high-temperature fermentation, bioprocess reactors and repeated CIP/SIP service.
Liquid electrolyte0–130°CCIP / SIP
Fermentation & high temperatureXF263THigh-temperature process pH sensor
A high-temperature polymer-gel pH electrode for chemical processes, biotechnology, food, power and semiconductor applications.
Polymer gel0–130°C continuous6 bar maximum
Harsh chemical & anti-foulingXF260EIon-trapping industrial pH electrode
An ion-trapping, salt-free-bridge pH electrode for high salinity, heavy metals, organics, ammonium and other media that challenge conventional sensors.
Ion-trapping systemSalt-free bridge0–130°C
Harsh chemical & anti-foulingXF264FGD and DeNOx pH sensor
A double-ceramic-junction pH electrode with FGD-specific mixed gel for sulfur-rich, high-solids and heavy-metal process conditions.
FGD-specific mixed gelDouble ceramic junction0–100°C
Harsh chemical & anti-foulingXF266HF-resistant industrial pH sensor
An industrial pH electrode with an HF-resistant glass membrane for semiconductor, petrochemical, steel wastewater and metal-treatment processes.
HF-resistant glass0–100°CIP68
Harsh chemical & anti-foulingXF288Non-porous-junction pH sensor
A junction-free reference design for severely contaminated chlor-alkali, sulfide, high-ammonia, heavy-metal and solvent processes.
Junction-free reference0–130°CAnti-fouling design
Low temperature & pure waterXF263LLow-temperature pH electrode
A low-temperature electrolyte pH electrode for frozen brine, surface water, chemical and industrial processes down to -20°C.
-20–100°CLow-temperature gelIP68
Low temperature & pure waterXF268High-temperature pure-water pH sensor
A low-conductivity, high-temperature pH sensor for power generation, boiler water and condensate systems down to 1 μS/cm.
Down to 1 μS/cm0–130°CIP68
Low temperature & pure waterXF268 RefillableRefillable ultra-pure-water pH sensor
A refillable pH sensor for ultra-low-conductivity, high-temperature pure water in power, boiler-feed and condensate systems down to 0.2 μS/cm.
Down to 0.2 μS/cmRefillable electrolyte0–130°C
03 · Quick comparison
Compare the key differences in one table
| Model | Recommended fit | Temperature | Pressure | Key design |
|---|---|---|---|---|
| XF240Economical industrial pH sensor | Municipal and domestic wastewater | 0–80 °C | 0–2 bar | 0–14 pH |
| XF263General-purpose industrial pH sensor | Strong acid and alkali | 0–100 °C | 0–3 bar, 6 bar max | 0–14 pH |
| XF263iDigital industrial pH electrode | Wastewater treatment | 0–100 °C | 0–3 bar, 6 bar max | 0–14 pH |
| XF232Refillable fermentation pH sensor | Biopharmaceutical fermentation | 0–130 °C | 0–3 bar, 6 bar max | Refillable electrolyte |
| XF263HTHigh-temperature fermentation pH sensor | Biopharmaceutical fermentation | 0–130 °C | 0–3 bar, 6 bar max | Liquid electrolyte |
| XF263THigh-temperature process pH sensor | Chemical and petrochemical | 0–130 °C continuous | 0–3 bar, 6 bar max | Polymer gel |
| XF260EIon-trapping industrial pH electrode | Chlor-alkali and ammonia | 0–130 °C | 0–3 bar, 6 bar max | Ion-trapping system |
| XF264FGD and DeNOx pH sensor | Flue-gas desulfurization | 0–100 °C | 0–3 bar, 6 bar max | FGD-specific mixed gel |
| XF266HF-resistant industrial pH sensor | Semiconductor manufacturing | 0–100 °C | 0–3 bar, 6 bar max | HF-resistant glass |
| XF288Non-porous-junction pH sensor | Chlor-alkali | 0–130 °C | 0–3 bar, 6 bar max | Junction-free reference |
| XF263LLow-temperature pH electrode | Frozen brine | -20–100 °C | 0–3 bar, 6 bar max | -20–100°C |
| XF268High-temperature pure-water pH sensor | Power generation | 0–130 °C | 0–3 bar, 6 bar max | Down to 1 μS/cm |
| XF268 RefillableRefillable ultra-pure-water pH sensor | Power generation | 0–130 °C | 0–3 bar, 6 bar max | Down to 0.2 μS/cm |
04 · Related system
Add MUC-200 when the project needs centralized display and outputs
MUC-200 is a multiparameter controller, not a pH electrode. It can combine pH with other compatible water-quality sensors and provide a touchscreen, 4–20 mA and Modbus RS485 interfaces.
View MUC-20005 · Common questions
Prepare this information before an inquiry
What if I do not know which model to choose?+
Send the water chemistry, temperature, pressure, mounting, cable length, controller interface and quantity. We will narrow the choice to one to three suitable models.
Are all values verified?+
Only values found in the current technical files are published. The XF240 junction, XF263i electrical and housing details, and XF266 fluoride conditions still require confirmation on the final configured datasheet.
Where are the ORP products?+
This page contains only pH electrodes supported by the supplied files. ORP will receive a separate selection page after real models and technical files are available.
Contact FUNEL
Tell us what you need to measure.
We will respond with a recommended configuration, supporting documentation and quotation.