A lot of what we're asked to find under the Yokogawa name isn't a new instrument off a current price list — it's a RIO bus coupler, an FA-M3 output module, or a chart recorder keeping a DCS running that's been in service for twenty years and isn't being replaced anytime soon. Z & F Corporation Ltd supplies 516 genuine Yokogawa lines spanning that legacy automation hardware alongside current-production process instrumentation.
What You'll Find
- Process transmitters — the EJA series of differential and gauge pressure transmitters, 4-20mA/HART, 2-wire loop powered, current production.
- PLC & DCS modules — FA-M3 series I/O modules, power supply modules, and RIO bus components, largely legacy and no longer manufactured.
- Recorders — chart and paperless recorders for continuous process logging.
- Power meters — high-precision power analysers for electrical test and R&D use.
The legacy modules are where sourcing gets genuinely difficult — Yokogawa, like most automation manufacturers, eventually stops making a given I/O card or coupler, but the DCS it belongs to often stays in service for a decade or more afterward. We source through multiple channels for exactly this reason, and can often find remaining genuine stock or identify a compatible replacement module even where Yokogawa itself lists a part as end-of-life.
Matching a Legacy Module
For older PLC and DCS modules, the full part number on the module itself — not just the system name — is what we need to work from. A photo of the nameplate, including any suffix codes, is the fastest route to a correct match.
We are not Yokogawa, and not an authorised Yokogawa distributor — genuine stock only, sourced and supplied independently, with any brand-specific disclosure noted on the relevant product page. See also Process Measurement & Control for the wider instrumentation range this sits within. Orders ship worldwide with export documentation as standard; process plants across the Gulf, Southeast Asia, and Africa are regular destinations for this range.
Frequently Asked Questions
Can you source Yokogawa PLC/DCS modules Yokogawa itself lists as end-of-life?
Often, yes — we source through multiple channels and can usually find remaining genuine stock or a compatible replacement module, even for parts Yokogawa has discontinued.
What do you need to match an older Yokogawa module?
The full part number and suffix codes from the module's nameplate — a photo is the fastest way to get us everything we need in one go.
Are Yokogawa EJA transmitters still in current production?
Yes — the EJA series pressure transmitters are current-production Yokogawa instruments, unlike much of the older PLC and DCS hardware also carried under this brand.
