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Hardwired Instrumentation Solutions

OleumTech Hardwired Sensors and Switches

ELECTROMAGNETIC FLOW METER

Bi-directional Flow Measurement

Model Series: HEFM

Pre-attached grounding rings included

Ordering Information

HIGHLIGHTS

  • Measurement is independent of fluid density, viscosity, temperature, pressure, and conductivity
  • Two measuring points inside the meter with no moving
    parts to eliminate pressure drop
  • Capable of measuring electric conductive liquid and
    fluids with low solid contents
  • Reference Accuracy: ± 0.2 % of reading
  • Output signal options:
    RS485 Modbus / 4-20 mA / 2-8 KHz Pulse Output
  • Wide measurement range & high efficiency
  • Minimal upstream/downstream piping requirements:
    5 pipe diameters upstream
    2 pipe diameters downstream
  • Backlit LCD with integral push button interface
  • Advanced features including smart self-detection
    and self-diagnosis for checking magnetized signal,
    empty pipe, and contaminated electrode
  • Provides best-in-class PTFE lining material
  • Provides various options of electrode materials,
    grounding options, and more
  • Low power consumption
  • Operating/ambient temperature:
    -40 to 70 °C (-40 to 158 °F)
    LCD: -20 to 70 °C (-4 to 158 °F)
  • Process/lining temperature:
    -20 to 120 °C (-4 to 248 °F)
  • IP67 protection, robust construction and materials
HARDWARE 
Device Functionality∙ Electromagnetic Flow Meter (RS485 Modbus, 4-20 mA, or 2-8 KHz Pulse Output)
Configuration∙ Integral LCD with Push Button Interface or Modbus
Accuracy∙ ± 0.2 %
Fluid Conductivity∙ > 5 μS/cm (AC Power), > 20 μS/cm (24 Vdc)
Measuring Scope∙ 0.328 ft/sec (0.1 meters/sec) to 32.8 ft/sec (10 meters/sec)
Current Output Accuracy∙ 0.1% of Pulse Output Accuracy; Temperature Coefficient (0.01 %/°C or 0.0056 %/°F)
Maximum Operating Pressure∙ 1.5" to 3": 569 psi
∙ 4" to 6": 227 psi
Current Output Mode∙ Active (Loop Power is Not Required)
Analog Output∙ 4-20 mA
Maximum Load of Current Output∙ < 700 Ω
Alarming Current∙ 3.6 mA or 22 mA
Frequency Output Scope∙ 2-8 KHz
Pulse Width∙ Automatic (Pulse Width 50 %)
Pulse Mode∙ NPN Transistor Output 32 Vdc/200 mA
Damping Time∙ 1-100 s
Control Output (DO)∙ NPN Transistor Output 32 Vdc/200 mA; 2-CH
Control Input (DI)∙ Dry Contact ON < 200 Ω; 1,000 Ω < OFF; 1-CH
Interface / Baud Rate∙ RS485 Modbus / 1200-57,600 bps
Local LCD Display∙ 128 x 64 Pixel Backlit Type
Lining Material∙ PTFE (-20 to 120 °C / -4 to 248 °F)
MECHANICAL/PACKAGING SPECIFICATIONS
Mechanical (WxDxH) / Package (WxDxH) / Gross Weight (Per Tube Size)∙ 1.5": 5" x 7.9" x 12.1" / 14.2" x 15.4" x 20.9" / 37.5 lbs (17 kg)
∙ 2": 6" x 7.9" x 12.6" / 14.2" x 15.4" x 20.9" / 44.1 lbs (20 kg)
∙ 2.5": 7" x 7.9" x 13.5" / 14.2" x 15.4" x 20.9" / 50.7 lbs (23 kg)
∙ 3": 7.5" x 7.9" x 13.8" / 14.2" x 15.4" x 20.9" / 57.3 lbs (26 kg)
∙ 4": 9" x 9.8" x 15.5" / 16.5" x 16.9" x 28.4" / 77.2 lbs (35 kg)
∙ 5": 10" x 9.8" x 16" / 16.5" x 16.9" x 28.4" / 114.6 lbs (52 kg)
∙ 6": 11" x 11.8" x 18.3" / 16.5" x 16.9" x 28.4" / 121.3 lbs (55 kg)
Connection Fitting∙ Two 1/2" NPT Female
Enclosure Casing Material∙ Aluminum; IP67
ELECTRICAL SPECIFICATIONS (Specify When Ordering)
AC Power Input / Consumption∙ AC 100 to 240 V / <10 VA Max
DC Power Input / Consumption∙ DC 24 Vdc / RS485: 3 W; 4-20 mA: 3.8 W
CERTIFICATIONS & COMPLIANCE 
Safety - IECEx (Pending)∙ Ex db eb [ia] IIC T4 Gb
GENERAL SPECIFICATIONS 
Operating Conditions∙ Ambient Temperature: -40 °C to 70 °C (-40 °F to 158 °F)
∙ LCD Screen -20 °C to 70 °C (-4 °F to 158 °F)
∙ Humidity: 0 to 99 %, Non-Condensing
Warranty∙ 2-Year Parts and Labor