Yokogawa FU20-05-T1-NPT Widebody pH/ORP Sensor
A combined pH, reference, temperature and ORP/solution-ground sensor with a 5 m cable and threaded NPT body.
Technical Summary
FU20-05-T1-NPT is a Yokogawa widebody 4-in-1 pH/ORP sensor. One body combines the pH glass measuring electrode, Ag/AgCl reference system, Pt1000 temperature element and solid-platinum ORP electrode that also serves as the solution ground.
The order code specifies a 5 m cable, T1 Pt1000 temperature execution and an NPT version with PPS GF40 body, 3/4-inch tapered thread and dome-shaped construction.
Specifications
| Manufacturer | Yokogawa Electric Corporation |
|---|---|
| Model | FU20-05-T1-NPT |
| Product Family | FU20 widebody sensors |
| Product Type | 4-in-1 pH/ORP sensor |
| Integrated Elements | pH glass, Ag/AgCl reference, Pt1000 and platinum ORP/solution ground |
| Cable Length Code | 05 = 5 m integral cable |
| Temperature Code | T1 = Pt1000, IS execution |
| Body Code | NPT = PPS GF40 body |
| Process Thread | 3/4-inch tapered thread |
| Body Form | Dome shaped |
| Reference Construction | Double junction with gel electrolyte |
| Liquid Junction | Porous PTFE |
Features
- Combines four electrochemical functions in one rugged widebody sensor.
- Uses a double-junction reference arrangement to isolate the reference system from the process.
- Provides Pt1000 temperature measurement for analyzer compensation.
- Uses the platinum element for ORP measurement and solution grounding.
- Includes the 5 m integral cable defined by the complete order code.
Compatibility
- Confirm that the connected analyzer accepts pH/ORP input and a Pt1000 temperature element.
- Match the 3/4-inch tapered NPT process connection and verify insertion clearance for the dome-shaped body.
- Review process temperature, pressure, chemical compatibility and intrinsic-safety requirements for the complete loop.
- Do not substitute another FU20 cable, temperature or body suffix without checking analyzer wiring and mechanical fit.
Replacement
- Record analyzer input settings, slope, zero, temperature response and cable termination before removal.
- Depressurize, drain and make the process safe before unscrewing the sensor.
- Inspect the process thread, sealing method, cable route and analyzer terminals before installation.
- Condition and calibrate FU20-05-T1-NPT, then verify pH, temperature, ORP and solution-ground response.
FAQ
FU20-05-T1-NPT: Which analyzer details should accompany a quotation?
Provide the analyzer model, input-module type, temperature-element setting, hazardous-area documents and a terminal photograph.
FU20-05-T1-NPT: Can the 5 m cable be shortened or extended?
Treat the integral sensor cable as part of the measuring system; review analyzer instructions and approved junction hardware before changing the cable arrangement.
FU20-05-T1-NPT: What should be checked before installing the NPT body?
Confirm thread standard, insertion clearance, process sealing method, pressure state and chemical compatibility of the PPS GF40 body.
How should a stored FU20-05-T1-NPT be prepared for service?
Inspect the glass and junction, follow Yokogawa conditioning guidance, then complete pH calibration and verify temperature and ORP response.
FU20-05-T1-NPT: What acceptance record is useful after commissioning?
Retain buffer values, slope, zero, temperature agreement, ORP response, stabilization time and the final analyzer configuration.
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