Contrec 515 Natural Gas Flow Computer (GN06)

Name: Contrec 515 Natural Gas Flow Computer (GN06)
Brand: Contrec
SKU: 515–GN06
Availability: InStock

SKU: 515–GN06 Category: Digital Indicators Tag: Contrec 515 Series

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The Contrec Model 515 (Application GN06) is a heavy-duty natural gas custody transfer flow computer engineered specifically for differential pressure volumetric meters using either single or stacked transmitter configurations. Built to provide premium mathematical resolution for gas-balancing pipelines, this advanced instrument executes generic differential pressure flow equations while fully incorporating the precise reference calibration conditions of the primary element. Real-time density computations and gas compressibility boundaries are dynamically resolved in strict accordance with the AGA-8 Detailed Characterization Method for natural gas matrices with up to 21 elements. Gross thermal heating values are evaluated concurrently based on ISO 6976:1995 and GPA Standard 2172-96 algorithms to back critical B2B energy accounting. Enclosed in a weather-sealed IP65 weatherproof housing with an alphanumeric backlit LCD interface and an ergonomic keypad, it offers exceptional hardware fortification and long-term data safety inside automated process infrastructures.

Key Product Features

Volumetric DP Flow Specialization: Designed specifically for differential pressure volumetric flow sensors, processing primary field calibration states within real-time equations.
Stacked Transmitter Integration: Outfitted to process stacked differential pressure analog inputs to broaden the system measurement turndown ratio and preserve low-flow accuracy.
AGA-8 detail Compressibility: Leverages live analog temperature and pressure loops alongside multi-component natural gas properties to extract exact gas density variables.
Integrated Transducer Power: Outfitted with an adjustable 8-24V DC excitation supply providing up to 50mA from the front panel to eliminate secondary sensor wiring loops.
Robust Audit Tracking: Onboard non-volatile flash memory combines with an integrated Real Time Clock (RTC) data logger to securely capture over 1,000 entries of process totalizers, fluid variables, and system alarms.

Contrec Model 515 GN06 Technical Specifications
● POWER SECTION
Power Supply Options	115 Vac ±15% standard (Optional: 230 Vac ±15% layout via model code E) 12 to 28 Vdc external field loop power input
Transducer Power Output	Adjustable 8 to 24 Vdc sensor excitation voltage regulated via software controls; maximum continuous current capacity up to 50mA.
Data Security Retentivity	Non-volatile flash memory ensures that all gas totalizers, user variables, and system logs remain permanently stored during full plant power failure events.
● INPUT SECTION
Differential Pressure Inputs	Single or dual stacked analog differential pressure input channels. Configurable Signal Formats: 4 to 20 mA current loops, 0 to 5 Vdc, or 1 to 5 Vdc voltage signals. Signal Customization: Programmable linear scaling, noise filtering, and custom low-flow cutoff boundaries.
Compensation Analog Inputs	Analog Temperature Input: RTD (Pt100) or linear 4 to 20 mA process loop. Analog Pressure Input: 4 to 20 mA active linear transmitter input.
● OUTPUT SECTION
Analog Retransmission Loop	Fully isolated 4 to 20 mA DC current loop retransmission output channel with programmable range scaling.
Digital Pulse Retransmission	Open collector transistor output featuring software-defined volumetric scaling factor and adjustable pulse width duration.
Serial Infrastructure	RS-232 Port: Dedicated port optimized for direct PC terminal setup or local ticket receipt printing. RS-485 Port (Optional): Multi-drop serial bus supporting robust long-distance plant networking. Supported Protocols: Modbus RTU (Slave), standard Ticket Printer, and Contrec command-line protocols.
Local Display Screen	Backlit alphanumeric LCD display showcasing raw Volume, Volume Flowrate, Corrected Volume, Corrected Flowrate, Heat, Heat Flowrate, Mass, Mass Flowrate, Temperature, Pressure, and Compressibility Factor.
● PERFORMANCE
Calculation Accuracy	Better than ±0.01% of reading for all internal volumetric differential pressure equations and mathematical AGA-8 density solutions.
Analog Transmittance Precision	Better than ±0.05% of full scale range under reference conditions.
Data Logging Matrix	Real-Time Clock (RTC) event log memory block capturing over 1,000 entries for continuous process audit tracking.
● PHYSICAL
Mechanical Housing Layout	Molded field-mounting enclosure utilizing high-rigidity impact polymers (Optional flush panel mount, pipe track mount, or deployment within a heavy Ex410 explosion-proof housing).
Tactile Operator Array	Robust elastomeric keyboard layout providing precise tactile user input feedback.
● STANDARDS CONFORMITY
Environmental Safeguarding	Standard IP65 weatherproof frontal fascia shield protection. *Note: Conformal PCB coating (Option C) is highly recommended to prevent internal circuitry degradation from severe moisture and ambient corrosion.