Description
Emerson FloBoss S600 – High-Accuracy Flow Computer for Custody Transfer and Multi‑Stream Metering

The Emerson FloBoss S600 (often deployed as S600/S600+) is a dedicated flow computer designed for fiscal measurement in oil and gas. From my experience, it’s the box you put in when you want metering to be right the first time—and traceable later. It handles multi‑stream liquid and gas metering, applies proven AGA/API/ISO calculations, and keeps an audit trail that inspectors typically expect at custody transfer points. You might notice that it integrates cleanly into existing skids and SCADA, which in many cases saves days in commissioning.
Company’s Order Placement Process and Guarantees
- Warranty: 365 days
- Delivery time: 1 week for in‑stock; no more than 1 month at the latest
- Payment: 50% advance payment; full payment before delivery
- Express delivery options: FedEx, UPS, DHL
Key Features
- Custody transfer calculations – Supports recognized AGA/API/ISO standards typically required for fiscal metering in oil & gas.
- Multi‑stream capability – Manage multiple meter runs within one unit, which seems to be the most cost‑effective option on compact skids.
- Comprehensive I/O – Pulse/frequency, 4–20 mA analog, RTD temperature, and digital I/O for valves, status, and alarms.
- Industrial communications – Ethernet plus serial ports with Modbus RTU/TCP for smooth SCADA/DCS connectivity.
- Secure audit trail – Time‑stamped archives and event logs to satisfy regulatory or internal compliance audits.
- Operator-friendly front panel – Local display and keypad (on applicable configurations) for quick checks and adjustments.
- Proving and diagnostics – Stream proving support and diagnostics that reduce troubleshooting time in the field.
- 24 VDC power – Fits common panel power schemes; easy to back up with a small UPS.
Technical Specifications
| Brand / Model | Emerson FloBoss S600 (S600/S600+ series) |
| HS Code | 903289 (Automatic regulating or controlling instruments, other) |
| Power Requirements | 24 VDC nominal (typically 18–36 VDC), low power embedded design suited for panel UPS backup |
| Operating Temperature | -20 to +55 °C typical industrial range (non‑condensing) |
| Signal I/O Types | Pulse/frequency inputs for turbine/PD meters; 4–20 mA analog inputs/outputs; RTD (Pt100) temperature; digital inputs/outputs for status and control |
| Communication Interfaces | 10/100 Ethernet; RS‑232/RS‑485 serial; Modbus RTU and Modbus TCP support |
| Installation Method | 19‑inch rack / panel‑mount for metering skids and control cabinets |
| Dimensions & Weight | 19‑inch rackmount chassis, commonly around 6U height; weight typically near 10 kg depending on I/O configuration |
Application Fields
The S600 is typically deployed anywhere fiscal accuracy and traceability matter:
- Pipeline custody transfer (crude, refined products, natural gas)
- Metering skids on LACT units and truck/rail loading racks
- Gas distribution city gates and transfer stations
- Offshore platforms and FPSOs where multi‑stream oversight is essential
- LNG terminals and storage facilities needing robust audit trails
One thing I appreciate is how the S600 keeps metering, proving, and reporting all in one place. A midstream operator told us they cut monthly reconciliation time in half because the audit records were already structured the way their ERP needed.
Advantages & Value
- Measurement integrity – Standards‑based algorithms with secure archives reduce disputes in custody transfer.
- Lifecycle savings – Multi‑stream handling and flexible I/O often replace multiple devices, trimming panel space and wiring.
- Easy integration – Modbus RTU/TCP keeps it straightforward with existing SCADA/DCS and historian systems.
- Operational continuity – Designed for continuous duty with robust diagnostics; downtime typically stays low.
- Support and spares – Widely deployed platform; replacement parts and technical know‑how are usually easy to source.
Installation & Maintenance
- Panel/cabinet – Mount in a 19‑inch cabinet with adequate ventilation; maintain ambient within the specified industrial range.
- Power & grounding – Supply clean 24 VDC and bond to a single‑point ground; separate signal and power wiring to minimize noise.
- Wiring practices – Use shielded twisted pair for analog signals; observe pulse input limits for turbine/PD meters; follow RTD wiring best practices.
- Network – Assign fixed IPs on the control LAN; for serial links, standardize baud/Modbus mapping and document registers.
- Routine maintenance – Periodic transmitter calibration, prover checks, archive backups, and scheduled firmware updates (during planned shutdowns).
- Spare strategy – Keep a spare PSU module and key I/O cards on site; this typically shortens recovery time significantly.
Quality & Certifications
- CE compliant; manufactured under ISO 9001 quality systems
- UL/CSA listings for applicable variants
- Designed for industrial environments; EMC and safety compliance per manufacturer specifications
- Manufacturer warranty typically 12 months; our supply warranty: 365 days from delivery
If you’re comparing against PLC‑based metering, the S600 usually wins on auditability and time to certify. If you need a specific stream count, I/O map, or protocol list for your project, share the P&IDs and I can tailor the exact S600 configuration and lead time.







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