The L-magH Series Split Electromagnetic Heat Meter offers precise, real-time measurement of both heat and cold energy flow. Designed for HVAC systems, energy monitoring, and industrial processes, this meter helps optimize energy management by accurately tracking thermal exchanges in water-based systems. Its split-type design separates the sensor and converter, making it easy to install in different environments with flexible configurations.
Key Features and Specifications
Measurement Modes
- Heat Mode (H): Default mode for measuring thermal energy (heat).
- Cold Mode (R): Designed to monitor cold energy flow.
- Combined Mode: Measures both heat and cold simultaneously, displaying results separately for easy tracking.
Flow and Pipe Specifications
- Pipe Sizes Supported: From 10 mm to 2000 mm (diameter).
- Flow Velocity Range: 0.1 to 15 m/s, with a resolution of 0.5 mm/s.
- Units: Flow readings in m³/h; heat and cold units configurable in MJ/h, GJ/h, KWh/h, or MWh/h.
- Measurement Accuracy:
- For flow rates below 0.3 m/s: ±0.25% Full Scale (FS).
- For flow rates from 1–15 m/s: ±0.3% to ±1.0% relative error (R).
Electrical Specifications and Outputs
- Current Outputs: 4-20 mA output for instantaneous flow, heat, cold, and flow direction status.
- Pulse and Frequency Output: Supports continuous wave frequency output (1-5000 Hz) and pulse trains for data logging.
- Communication Protocols:
- Standard: RS485 with Modbus RTU protocol.
- Optional: HART, GPRS, PROFIBUS for advanced networking and remote data transmission.
- Power Requirements:
- AC: 85–250V, 45–63 Hz.
- DC: 20–36V with a total power consumption of less than 20W.
Temperature and Pressure Handling
- Temperature Calibration: Uses Pt1000 RTD three-wire sensors for precise monitoring.
- Working Pressure Options: Selectable between 0.6 MPa and 1.6 MPa according to CJ128-2007 standards.
- Environmental Operating Conditions:
- Temperature Range: -10°C to 60°C.
- Humidity: 5% to 90% non-condensing.
Additional Features
- Alarms and Error Detection:
- Empty Pipe Detection: Stops measurement when pipes aren’t fully filled to prevent inaccurate readings.
- Excitation Alarms: Alerts for excitation wiring issues, ensuring sensor performance.
- Reverse Flow Protection: Optional setting to block measurements during reverse flow for better data integrity.
- Linear and Nonlinear Calibration: The meter supports four-phase calibration, improving accuracy at low flow rates (<0.5 m/s).
Installation and Design
- Split-Type Design: The sensor and converter are connected by cable, allowing wall-mounted installations for flexibility in various environments.
- Grounding: Copper grounding wire ensures electrical stability, especially in high-sensitivity systems.
- Compact and Durable: The split shells are vacuum-sealed for moisture protection during transport and storage.
Applications
- HVAC Systems: Measure and manage heating and cooling loads efficiently in commercial buildings.
- Industrial Processes: Monitor thermal exchanges in production systems to optimize energy usage.
- Energy Management: Track energy consumption and heat loss in buildings for greater efficiency.
Packaging and Storage Guidelines
- Vacuum-packed for Moisture Protection: Ensures product integrity during shipping.
- Storage Conditions: Temperature between -20°C to +60°C, with humidity below 80%.