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Bi-Rotor Positive Displacement Meter
[ALBRPD]

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.

Flow Range up to 8800 GPM (2000 m³/hr)
Operating pressure max. 930 psig (64bar)
Line size ¼"-16" (8-400mm) ANSI or DIN Flange
Process temperature -22 ~ 480°F (-30 ~ 250°C)
Body Material Stainless Steel 304 and Carbon Steel
Viscosity 0~20,000 cP
Enclosure Rating NEMA 4 (IP 65)
Working Humidity < 90% @ 75°F
Working Temperature 104 ~ 176°F (40 ~ 80°C)
Accuracy ±0.1%
Repeatability ±0.01%
Pulse Output (24VDC±5%, VH≥20V,) VL<1V and output load < 200Ω)
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)
Display rate, total, low flow cust-off, battery consumption
User Parameters K-factors, linear correction coefficeient, flowrate input signal section points, temperature and pressure compensation, set pulse output range, decimal adjustment, ect.
Communciation Baud Rates User selectable (1200, 2400, 4800 or 9600)
  • 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


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