Hitachi identifies EH-PT4 as a signed 15-bit, four-channel resistance-temperature-detector input module for Pt100 and Pt1000 sensors in the EH-150 / EHV+ controller family.
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EH-PT4Description:
Hitachi EH-PT4 EH-150 4-Channel Pt100/Pt1000 RTD Input ModuleEH-PT4 converts signals from four Pt100 or Pt1000 resistance temperature detectors into signed 15-bit PLC input data.
Match the exact module label, RTD type, configured range, field wiring, external supply and installed controller system.
| Manufacturer | Hitachi |
|---|---|
| Exact model | EH-PT4 |
| Product family | EH-150 / EHV+ |
| Module type | 4-Channel RTD Input Module |
| Input points | 4 |
| Applicable sensors | Pt100 / Pt1000 resistance temperature detectors |
| Conversion data | Signed 15-bit |
| Measurement ranges | -20 to +40°C or -50 to +400°C |
| Input excitation | 2 mA constant-current system |
| Isolation | Photocoupler between input and internal circuit; no channel-to-channel isolation |
| Terminal block | Removable M3 terminal block |
Official source: Hitachi EH-150 / EHV+ module lineup and specifications.
Officially listed modules for system-reference review; they are not direct substitutes for EH-PT4.
Twenty-four independent industrial spare-part references from the supplied inventories; none is a direct EH-PT4 replacement.
Use the complete Hitachi module label and installed EH-150 / EHV+ system configuration for quotation.
Record EH-PT4 exactly as shown on the Hitachi module nameplate.
Confirm the installed Hitachi EH-150 / EHV+ controller family and base.
Identify Pt100 or Pt1000 and retain the documented field wiring.
Confirm -20 to +40°C or -50 to +400°C range.
Review 24 V DC external supply, removable M3 terminal block and cable termination.
Provide controller/base model, module position, project record and nameplate photographs.
Published Nordwel pages for separate industrial spare enquiries; none is an EH-PT4 substitute.
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Support centers on exact-model verification, manufacturer-document review and installed-system compatibility.
Match the complete label and revision.
Record RTD type, wiring and measuring range.
Provide the EH-150 / EHV+ controller, base and module position.
Follow the applicable Hitachi installation and maintenance manual.
Eight-channel thermocouple input module listed in the Hitachi series.
Related Pt100/Pt1000 RTD input module; review wiring mode and controller support.
Hitachi analog-input references in the same family; not direct substitutes.
Send the full EH-PT4 nameplate, quantity, controller/base models, RTD type, range and destination.
Thirty varied references selected from the supplied TXT inventories for PLC, HMI, sensing, drive, process and control-system applications.
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