Bi-Rotor Positive Displacement Meter
[ALBRPD]

  • Bi-Rotor Positive Displacement Flow Meter
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The SMC ALBRPD flowmeter features two precisely machined rotating members known as helical rotors which rotate and mesh within the meter's interior housing in order to form a measuring chamber of known volume which may be used to accurately determine volumetric flow rate as a funtion of the rotors' velocity. The helical rotors' motion is transmitted to the display via a sealed coupling & drive system that enables the display to provide accurate data for both flow rate and total accumulated flow. The unique helical rotor design provides a number of advantages over traditional gear-type PD meters including reduced pressure drop, the virtual elimination of down-stream pulsations, enhanced particle tolerance, and reduced maintenance. The advantages provided by the helical rotor make the ALBRPD an ideal choice for many applications including oil-in-water media and fluids with small ammounts of entrained solids.

 
  • Superior accuracy - to 0.1% of reading over 30:1 turn-down
  • Uniform rotation means low pressure loss
  • No metal-to-metal contact provides for long service lifetime
  • Self-lubricating
  • Very low noise and vibration
  • Reduced number of parts reduces maintenance requirements
  • Rugged double case construction prevents loss of calibration due to changes in pressure or temperature
  • NIST traceable calibration certificate
Flow Range: up to 8800 GPM (2000 m³/hr)
Line size: ¼"-16" (8-400mm) ANSI or DIN Flange
Process temperature: -22 ~ 480°F (-30 ~ 250°C)
Operating pressure: max. 930 psig (64bar)
Accuracy: ±0.1%
Body Material: Stainless Steel 304 and Carbon Steel
Repeatability: ±0.01%
Enclosure Rating: NEMA 4 (IP 65)
Viscosity: 0~20,000 cP
Working Temperature: 104 ~ 176°F (40 ~ 80°C)
Display: rate, total, low flow cust-off, battery consumption
Working Humidity: < 90% @ 75°F
Current Output: 4-20mA, (two wire system w/ 600Ω max loop load)
Digital Output: RS485/RS232 communication with Modbus RTU (powered by 24VDC±5% and <60mA)
Communciation Baud Rates: User selectable (1200, 2400, 4800 or 9600)
User Parameters: K-factors, linear correction coefficeient, flowrate input signal section points, temperature and pressure compensation, set pulse output range, decimal adjustment, ect.
Pulse Output: (24VDC±5%, VH≥20V,) VL<1V and output load < 200Ω)