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The Series IEFB is a field-adjustable insertion thermal energy meter that uses electromagnetic technology to accurately and reliably measure fluid velocity and energy consumption. The high accuracy IEFB is adjustable to fit pipe sizes from 4 to 10" (100 to 250 mm), while the standard accuracy IEFB fits pipe sizes 4 to 36" (100 to 900 mm). The IEFB incorporates a temperature meter and a calculator into a single unit. The LCD display provides clear readings of the meter’s values, including temperature and energy consumption, making it ideal for installation on chillers, boilers, and other heating and cooling applications. The high measuring accuracy and long lifetime keeps annual operating costs at a minimum. In addition, it offers several output options, including selectable BACnet MS/TP or Modbus® RTU communications protocol over 2-wire RS-485 and standard analog, frequency, and alarm outputs.

Product Applications

• Monitoring chiller cooling output performance
• Industrial boiler heating performance
• Energy efficiency monitoring
• Optimization of heat energy performance
• Commercial and residential heat energy consumption and metering
• District heating and cooling monitoring
• Energy cost allocation monitoring

Features

• Save time and reduce installation costs with flow, temperature sensors and calculator delivered in one preprogrammed, complete package.
• Maintain system energy efficiency with high performance accuracy that is maintained through changes in temperature, density or viscosity per universally accepted standard
• Meet application requirements with field configurable setup displays (-LCD integral option or remote accessory A-IEF-DSP), which accommodate a variety of application configurations with one model through multiple display configurations i.e. pipe size, pipe material, liquid type, analog output, pulse/frequency output, alarm outputs, communication outputs, damping, and calibration factor
• Quick and easy ordering and set up with Setup Wizard and installation tool that are simple to use and allow for precise installation
• Save time with accessory setup kit A-IEF-KIT that ensures exact installation application depth with included thickness gage and measuring tape
• Reduced costs, long product life, and minimal maintenance requirements with no moving parts to wear or break and electrodes that discourage fouling
• Minimize installation costs with isolation valve accessory options to allow for installation in operational systems via hot-tap kit or easy removal without system downtime
• Required documents included with NIST traceable pass/fail verification certificate included standard for Carbon Steel Schedule 40 pipes sized 4" (102 mm), 6" (150 mm), 8" (200 mm)

Specifications

• Service: Compatible clean or dirty non coating, conductive liquids.
  
• Range: 0 to 20 ft/s (0 to 6 m/s)
  
• BTU Accuracy per EN1434/ASTM E3137/CSA C900.1-13: High accuracy units: Class 2 for 2 to 20 ft/s (0.6 to 6 m/s); Standard accuracy units: Class 3 for 6.5 to 20 ft/s (2 to 6 m/s)
  
• Flow Sensor Accuracy: High accuracy units: ±0.5% of reading at calibrated velocity, ±1% of reading from 2 to 20 ft/s (0.6 to 6 m/s) ±0.02 ft/s (±0.006 m/s) at < 2 ft/s (0.6 m/s); Standard accuracy units: ±1% FS.
  
• Temperature Accuracy: Class B ±(0.30 + 0.005*t)°C per EN60751.
  
• Temperature Compensation: 140 to 220°F (60 to 104.4°C) < 2% error over ±30°F (-1.1 °C) change, 40 to 70°F (4.4 to 21.1°C) < 2% error over ±10°F (-12.2°C) change.
  
• Outputs: (1) Analog: 4-20 mA, 0-5 V, 0-10 V or 2-10 V
  
• Power Requirements: 12-42 VDC, .25 A @ 24 VDC; 12-36 VAC.
  
• Enclosure Ratings: NEMA 6P (IP68) (Non display models); NEMA 4X (IP66) (-LCD option).
  
• Communication protocol : BACnet MS/TP or Modbus RTU