The Contrec Model 515 (Application SC01) is a high-accuracy steam fiscal flow computer explicitly engineered to measure the volume, mass, and energy content of steam systems using frequency flowmeters. Designed for high-integrity utility monitoring, cogeneration setups, and plant energy balancing, this sophisticated instrument calculates mass flow and thermodynamic values in absolute compliance with the IAPWS-IF97 Industrial Formulation (1997). The multi-mode software core utilizes incoming pulse signals alongside analog temperature and/or pressure sensor inputs to dynamically determine specific volume and enthalpy variables, executing precise calculations for water, saturated steam, and superheated steam applications. Encased in a weather-sealed IP65 enclosure with a backlit alphanumeric LCD display, it guarantees heavy-duty protection in punishing plant environments. Outfitted with an adjustable 8-24V DC sensor excitation supply, isolated 4-20mA loop retransmission, and dual-port RS-232/RS-485 Modbus RTU telemetry, the Contrec 515 SC01 serves as a definitive data logging hub for steam network optimization.
Key Product Features
- IAPWS-IF97 Thermodynamic Math: Natively implements international standard formulations to resolve exact specific volume and specific enthalpy across diverse steam phases.
- Comprehensive Steam Phase Multi-Mode: Selectable operation profiles provide tailored energy measurement algorithms for water, saturated steam, and superheated steam.
- Universal Frequency Interfacing: Smart front-panel selection cleanly processes frequency or pulse trains from millivolt signals, reed switches, Namur proximity switches, and open collectors.
- Onboard Transducer Power Output: Minimizes auxiliary field wiring by providing a software-controlled 8-24V DC excitation output providing up to 50mA to power local sensors.
- Non-Volatile Flash Audit Trail: Features an integrated data logger and Real Time Clock (RTC) capturing over 1,000 entries of process totals, rates, and alarms securely.
