Product Core Brief
- Model: µR1800
- Brand: YOKOGAWA
- Series: µR1800 Industrial Recorder
- Core Function: 180mm chart-width industrial paper recorder for process monitoring and data logging
- Product Type: Industrial Strip Chart Recorder
- Key Specs: 180mm chart width | Pen or dot-printing models | Universal input | 90–250V AC power
- Condition: New Original / New Surplus / Refurbished
⚠️ µR1800 is a discontinued legacy product. Exact model code, channel count, pen/dot-printing type, option codes, and serial number should be confirmed against the nameplate before ordering.
Key Technical Specifications
- Product Type: Industrial Paper Recorder
- Chart Width: 180mm
- Recorder Style: Pen type or dot-printing type
- Input Points: Pen type 1–4 channels; dot-printing type 6 / 12 / 18 / 24 channels
- Input Type: Universal input — DC voltage, thermocouple, RTD, contact/digital input
- Power Supply: 90–250V AC, 50/60 Hz, universal power supply
- Display: VFD dot-matrix display
- Recording Speed: Pen type continuous recording; dot-printing type up to 6 ch/10 s, 12 ch/15 s, 18 ch/20 s, 24 ch/30 s
- Sampling Speed: Up to 125 ms for pen type models
- Communication Option: RS-422A optional
- Storage Option: IC memory card optional
- Enclosure: Front door IP54 splash-proof
- Dimensions: 288 × 288 × 220 mm
- Status: Discontinued — original factory supply limited
⚠️ Alarm outputs, communication modules, math functions, and terminal types depend on option codes. Verify against the installed unit nameplate.
Product Introduction
The YOKOGAWA µR1800 is a 180mm industrial strip chart recorder used for continuous process monitoring in chemical, power, pharmaceutical, heat treatment, and environmental applications. It supports universal inputs including DC voltage, thermocouple, RTD, and contact signals, and is available in both pen-type and dot-printing configurations.
This model is widely referenced as a legacy recorder. Yokogawa has discontinued the µR1800, and the official successor platforms are µR10000 and µR20000. For existing installations, verified surplus or refurbished units are commonly used to maintain continuity without changing panel cutouts or wiring.
QA & Testing SOP
Each unit is inspected before dispatch:
- Visual inspection: Check front panel, display window, chart compartment, door latch, terminal blocks, and signs of heat stress or corrosion.
- Model verification: Confirm YOKOGAWA branding, full model code, channel configuration, and option codes against the nameplate.
- Mechanical check: Inspect pen mechanism, chart drive, ribbon cassette, and paper path for wear or jamming.
- Power-on test: Verify VFD display, menu navigation, chart drive operation, and LED/status indicators.
- Input channel test: Check universal input response under controlled DC voltage, TC, or RTD simulation where test equipment permits.
- Alarm and communication check: If alarm relays, RS-422A, or IC card options are fitted, verify basic function.
- Anti-static packaging: Packed with protective foam and moisture protection to prevent transit damage.
Installation & Replacement Guidance
❗ Confirm pen type vs dot-printing type. µR1800 has both configurations, and they use different consumables and internal mechanisms.
❗ Match option codes before replacement. Alarm outputs, RS-422A communication, IC card, math function, and terminal types must match the original configuration.
❗ Verify panel cutout dimensions. µR1800 panel cutout is compatible with µR10000/µR20000, but option placement and terminal layout should still be confirmed.
❗ Check consumables compatibility. Chart paper, pens, and ribbon cassettes for µR1800 are shared with later µR series models, but part numbers must be matched.
Replacement steps:
- Pre-install: Record full model code, option codes, channel configuration, input types, and alarm settings.
- Removal: Disconnect power, label input terminals, and remove the unit from the panel.
- Install: Mount the replacement unit, reconnect terminals, and verify input wiring polarity.
- Commissioning: Restore power, configure input types, alarm limits, chart speed, and communication settings, then verify recording accuracy.
Technical FAQ
Is µR1800 still produced by Yokogawa? No. µR1800 is discontinued. Remaining supply typically comes from surplus inventory, refurbished stock, or project spares.
What replaces µR1800? The official successors are µR10000 and µR20000. They retain similar panel cutout dimensions and many functional features.
Can I replace µR1800 with µR20000 directly? Panel cutout dimensions are compatible, but option codes, communication commands, and configuration may differ. A side-by-side nameplate comparison is recommended before substitution.
What information is needed to quote the correct unit? A clear nameplate photo, model code, channel count, pen or dot-printing type, option codes, and serial number are the most helpful.
Do you supply consumables for µR1800? Chart paper, pens, and ribbon cassettes may be available depending on stock. Confirm part numbers against the installed recorder before ordering.
