The Contrec Model 515 (Application SC05) is a high-accuracy industrial steam flow computer optimized specifically for differential pressure elements operating under the international AGA-3 standard. Engineered to serve as a precise thermal measurement center for custody transfer and utility balancing, the software completely incorporates specialized algorithms to accurately account for gas thermal expansion effects and primary calibration states. The hardware architecture natively supports stacked differential pressure transmitters to maximize loop turndown ratios without diminishing low-flow precision. Mass flow and energy calculations are continuously processed in absolute compliance with the IAPWS-IF97 Industrial Formulation (1997), providing dedicated multi-mode logic for water, saturated steam, and superheated steam applications. Housed in an IP65 field-mounting enclosure featuring a backlit alphanumeric LCD screen and an ergonomic keypad, it delivers robust hardware isolation and definitive audit safety. Outfitted with an adjustable 8-24V DC sensor supply, isolated 4-20mA loop retransmission, and dual-port RS-232/RS-485 Modbus RTU telemetry, the Model 515 SC05 is a premier B2B solution for high-density steam utility processing manifolds.
Key Product Features
- AGA-3 DP Flow Compliance: Implements native AGA-3 differential pressure equations, combining correction variables for precise tracking of orifice thermal expansion.
- IAPWS-IF97 Thermodynamic Math: Natively implements international standard formulations to resolve exact specific volume and specific enthalpy across water, saturated steam, and superheated steam configurations.
- Stacked Transmitter Input Option: Configured to manage dual stacked differential pressure transmitters to significantly extend overall operational flow turndown limits.
- Onboard Transducer Power Supply: Features an integrated, front-panel adjustable 8-24V DC excitation output providing up to 50mA to eliminate separate field power loops.
- Extensive Operational Logging: Non-volatile flash memory combines with an internal Real Time Clock (RTC) logger to capture over 1,000 entries of process totals, logs, and diagnostic states.
