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
  • Accuracy: ± 0.2 % Conforms to Class 0.3 accuracy tolerance of 0.2 % as defined in the NIST Handbook 44, Section 3.30 for Liquid-Measuring Devices
  • 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
  • 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
  • Class I, Division 2 (Zone 2)

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 % Conforms to Class 0.3 accuracy tolerance of 0.2 % as defined in the NIST Handbook 44, Section 3.30
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∙ Class 150: 1.5" to 4": 740 psi | 5" to 12": 285 psi
∙ Class 300: 1.5" to 12": 740 psi
∙ The final pressure rating depends on the flange type, whichever is less. Refer to ANSI B16.5 Class 150 or 300 specification.
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 Dimensions (WxDxH) / Net Weight (Per Tube Size)∙ 1.5" ANSI 150 lbs: 5" x 7.9" x 12.1" / 14.3 lbs | ANSI 300 lbs: 6.1" x 7.9" x 12.7" / 20 lbs
∙ 2" ANSI 150 lbs: 6" x 7.9" x 12.6" / 18.3 lbs | ANSI 300 lbs: 6.5" x 7.9" x 12.9" / 22.8 lbs
∙ 2.5" ANSI 150 lbs: 7" x 7.9" x 13.5" / 23.8 lbs | ANSI 300 lbs: 7.9" x 7.9" x 13.8" / 28.2 lbs
∙ 3" ANSI 150 lbs: 7.5" x 7.9" x 13.8" / 27 lbs | ANSI 300 lbs: 8.3" x 7.9" x 14.2" / 36.3 lbs
∙ 4" ANSI 150 lbs: 9" x 9.8" x 15.5" / 39.3 lbs | ANSI 300 lbs: 10" x 9.8" x 16" / 58.7 lbs
∙ 5" ANSI 150 lbs: 10" x 9.8" x 16" / 46.2 lbs | ANSI 300 lbs: 11" x 9.8" x 16.5" / 72.7 lbs
∙ 6" ANSI 150 lbs: 11" x 11.8" x 18.3" / 59.6 lbs | ANSI 300 lbs: 12.5" x 11.8" x 18.9" / 96.6 lbs
∙ 8" ANSI 150 lbs: 13.5" x 13.8" x 20.1" / 94 lbs | ANSI 300 lbs: 15" x 13.8" x 21.3" / 149.1 lbs
∙ 10" ANSI 150 lbs: 16" x 15.8" x 22.6" / 144.8 lbs | ANSI 300 lbs: 17.5" x 15.8" x 23.9" / 218 lbs
∙ 12" ANSI 150 lbs: 19" x 19.7" x 23.4" / 220.5 lbs | ANSI 300 lbs: 20.5" x 19.7" x 24.1" / 321.9 lbs
Connection Fitting∙ Two 1/2" NPT Female
Enclosure Casing Material∙ Aluminum; IP67
ELECTRICAL SPECIFICATIONS (Specify When Ordering)
DC Power Input / Consumption∙ DC 24 Vdc / RS485: 3 W; 4-20 mA: 3.8 W

CERTIFICATIONS & COMPLIANCE
Safety∙ Class I Division 2, Group A, B, C, D T6...T4*
∙ Ex ec IIC T6...T4 Gc
∙ Class I Zone 2, AEx ec llC T6...T4 Gc
∙ IECEx CSA 23.0024X

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