FloBoss 503 Flow Manager
Rp123000.00
Manufacturer / Brand: Emerson Process Management – Remote Automation Solutions (Fisher)
Type: Electronic Flow Computer / Flow Manager
Description
The FloBoss 503 is a compact, microprocessor-based flow computer designed for gas measurement and control in a single metering run. It provides accurate flow and energy calculations (using orifice metering techniques), event and archival logging, logic and control functions, and remote communications. Though this model is discontinued (as of October 1, 2017), it remains in use in many legacy systems and is supported through documentation and replacement planning.
The unit is housed in a weather-tight enclosure with visible front-mounted LCD display, and supports installation of optional I/O and communications modules. It is intended for installation in field environments requiring robust measurement and control capability.
Key Features
Gas flow measurement conforming to AGA standards (for orifice metering)
PID loop control with override functionality (single control loop)
Logic and sequencing through two user-defined Function Sequence Tables (FSTs)
Archival of up to 15 history points (configurable)
Logging capacity for 240 alarms and 240 events
Security via up to 16 logon identifiers (user accounts)
Sampler / odorizer control capability
Local Operator Interface (LOI) port standard
Host communication via optional port supporting RS-232, RS-485, or dial-up modem
Protocol support for ROC (Remote Operations Controller) and Modbus
Optional I/O expansions (analog, discrete, pulse channels)
Optional Dual-Variable Sensor (DVS) interface for integrated static and differential pressure sensing
Optional AC power supply / battery charger, radio interface, and intrusion detection
Technical Specifications
Parameter | Specification / Range |
Processor & Memory | 32-bit Motorola processor running at ~14.7 MHz; 512 KB flash ROM; 512 KB SRAM backed by supercapacitor for retention |
Clock / Time | Real-time clock with crystal oscillator; supports Daylight Savings; 0.01% accuracy |
Flow Computation | 1992 AGA-3 orifice formula with AGA-8 compressibility |
History & Logging | Up to 15 configurable history points; 240 alarms, 240 event records |
I/O (built-in) | Built-in 2-, 3-, or 4-wire RTD input; one discrete (high-side switched) output; diagnostics inputs for power, battery, temperature |
I/O (optional modules) | Supports I/O cards (e.g. IOB1 with 10 points, IOB2 with 24 points) providing analog inputs/outputs, pulse/discrete channels |
Communications | LOI (RS-232) port (600 to 19,200 bps) for configuration; optional host communications via RS-232, RS-485, dial-up modem |
Power Requirements | 10 to 15 V dc for battery input (typical quiescent ~0.2 W excluding I/O/communications); charging input 14 to 22 V dc; optional AC power supply 105–132 V or 207–264 V AC, 47–63 Hz |
Display | 2 lines × 16 characters LCD, updated ~every 3 seconds |
RTD Input (built-in) | Supports single RTD (2–, 3–, or 4-wire) with α = 0.00385; measurement range –50 to +100 °C; accuracy ±0.56 °C |
Discrete Output | High-side switched; load voltage = battery voltage minus ~0.7 V; current limit ~300 mA with automatic reset |
Environmental / Mechanical | Operating temperature: –40 to +75 °C (LCD: –20 to +70 °C); storage: –50 to +85 °C; humidity: 5–95% non-condensing; vibration: per SAMA 31.1; enclosure: 14-gauge carbon steel with gasketed door and lockable hasp, CSA Type 4 / NEMA 4 equivalent |
Enclosure Dimensions & Weight | ~451 mm H × 350 mm W × 184 mm D; approximately 13.0 kg (including sensor and coupler but excluding batteries) |
Mounting Options | Wall, pipestand, or panel mounting via flanges or U-bolts |
Optional Sensors / Modules | Dual-Variable Sensor (DVS) for static & differential pressure; external MVS interface (for hazardous installations); communications cards; intrusion switch; radio bracket; AC power module |
Certifications / Approvals | Haz-loc: CSA Class I, Division 2, Groups A, B, C, D; IP54 / enclosure protection; meets EMI / EMC requirements (FCC Class A, EN 55022, CISPR 22) |
Diagnostics & Security | Monitoring of SRAM integrity, sensor/RTD faults, battery/charging voltage, internal temperature; reboot via watchdog; 16 user IDs with configurable access levels |
