Measures process pH while providing reference, temperature compensation and liquid-earth functions in one sensor.
Product Profile
SC25V-ALP25-225 integrates the pH glass electrode, reference, liquid earth and temperature element in a 12 mm sensor body for Yokogawa liquid-analysis systems.
The ALP25 construction is the high-temperature, chemical-resistant analog version with intrinsically safe approvals. The 225 suffix identifies the 225 mm insertion length.
Its Variopin connector supports detachable cabling while the PG13.5 process connection fits compatible retractable, flow-through and immersion holders.
Technical Data
| Manufacturer | Yokogawa |
|---|---|
| Exact model | SC25V-ALP25-225 |
| Sensor type | Combined pH, reference, liquid earth and temperature |
| Body diameter | 12 mm |
| Length | 225 mm |
| Connector | Variopin |
| Process connection | PG13.5 |
| pH range | 0 to 14 |
| Process temperature | 15 to 130 °C |
| Process pressure | 0 to 10 bar / 0 to 142 psig |
| Minimum conductivity | Greater than 10 µS/cm |
| Reference system | Ag/AgCl |
| Temperature element | Pt1000 to IEC 751 |
| Liquid earth | Titanium |
| Water protection | IP67 |
| Sterilization | Up to 135 °C |
System Role
Supports high-temperature hygienic and chemical-process duties within the documented material limits.
Uses the Pt1000 element for analyzer compensation and temperature indication.
Connects through a Variopin cable to the selected Yokogawa analyzer.
About IndustryParts
https://www.industryparts.com/Sensor length and process chemistry stay visible
IndustryParts records SC25V-ALP25-225 with its 225 mm geometry, analyzer path and wetted-material requirements before quotation.
- Insertion length retained
- Wetted materials reviewed
- Analyzer path confirmed
Compatibility
- Confirm the analyzer accepts a Variopin analog pH sensor with Pt1000 temperature element.
- Select a compatible PG13.5 holder for the 225 mm sensor length.
- Check PEEK, AR glass, PTFE, titanium and elastomer compatibility with the process and cleaning regime.
- Review intrinsic-safety documentation when the installation is in a classified area.
Applications
- High-temperature pH measurement in compatible process and cleaning cycles.
- Hygienic or chemical applications requiring a 225 mm PG13.5 sensor.
- Installations benefiting from combined pH, reference, temperature and liquid-earth functions.
FAQ
What installation data is needed for SC25V-ALP25-225?
Provide analyzer, holder, cable, insertion depth, process chemistry, temperature, pressure, cleaning or sterilization cycle and hazardous-area requirement.
Can SC25V-ALP25-225 replace a 120 mm version?
Not without checking holder geometry and insertion depth. The 225 mm length is a mechanical selection field and must match the assembly.
What should be reviewed before using SC25V-ALP25-225 in steam sterilization?
Verify the complete holder, cable and process seal arrangement as well as the documented sensor limit of up to 135 °C.
How is a stored SC25V-ALP25-225 prepared for service?
Follow Yokogawa storage and conditioning guidance, inspect the glass and junction, connect the correct Variopin cable, then perform calibration and stabilization checks.
What acceptance checks follow SC25V-ALP25-225 installation?
Confirm temperature response, zero and slope calibration, stable reference behavior, liquid-earth integrity, leak-free mounting and agreement with the approved process check.
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