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Turbine Flow Meter - Axial Turbine Meter
[ALTM]

ALTM turbine flow meters (hereinafter referred to as turbines) are used for the precise measurement of instantaneous flow rates of low- viscosity fluids as tap and demineralised water, fuels, liquefied gases, light fuel oils, solvents, and pharmaceutical fluids. Turbine flowmeters measure volumetric flow, where fluid passing through the meter body is measured by the mean velocity of the flowing fluid media. Flow rectifiers ensure a laminar flow in the axial direction of the wheel. A low-mass turbine wheel carried concentrically within the meter body is rotated by the fluid. The RPM of the turbine wheel is directly proportional to the mean flow rate within the meter body and directly corresponds to the volumetric flow over a wide range.

Process Connections BASF flanges up to 58,000 psig (4,000bar) (ANSI and DIN), dairy or tri-clamp, FNPT
Operating pressure -460 ~ 660°F (-273 ~ 350°C)
Flow rates 0.008-0.2 GPM (0.03-0.8 LPM) - smallest size ½" (15mm) 115-6,600 GPM (430-25,000 LPM) - largest size 10" (250mm)
Accuracy ±0.15%
Viscosities 1 to 60 cSt
Weight Small Sizes: 4 to 35 lbs (2 to 16 kg)Large Sizes: 25 to 340 lbs (11 to 155 kg)Electronics: 0.5 to 5.5 lbs (0.25 to 2.5 kg)
Material Stainless Steel as per DIN (AISI)Body: 1.4305 (1.4571 with flange) - (316 Ti) - specialInternal Parts: 1.4305 (303) - standard, 1.4571 (316 Ti)Wheel: 1.4122 (303) - standard, 1.4460 (329) - specialBearing: Tungsten carbide or teflon
Supply Voltage VB (blind pulse amplifier) +8.5 up to 29 VDC, regulated; < 5 mA current draw
Frequency Range (blind pulse amplifier) 2 up to 4,000 Hz
Max. process temperature (blind pulse amplifier) 250 °F with a distance of at least 1" between flowmeter and electronic housing; 300 °F w/ at least 2½"
Integral LCD display option 8 digits (14 segments), digit height ¼" (7mm) for real-time value, totals and programmable
Supply Voltage (LCD display option) 14-30 VDC controlled,VB = (Rload x 20 mA) + 14 V
Analog output (LCD display option) 2-wire (4-20mA); 12 bit (3.9 µA) resolution
Frequency output (LCD display option) fmax: 3,000 Hz, duty cycle: approx. 1:1,
Process temperature (LCD display option) -40~ 248 °F (-40~120 °C) w/ a distance of ≥ ½" (15 mm) between flowmeter and electronics
Ambient temperature (LCD display option) -40 up to 158 °F (-40 up to 70 °C)
Housing IP 65, aluminum AlMgSiPb, blue anodized
Ex-protection II 2 G Eex ia IIC T4, BVS 03 ATEX E 205
Related Files:
Metric Catalog
US Catalog
  • High resolution and fast response time; 5 to 50 msec
  • Wide temperature range; -460 to 660 °F ( -273 to 350°C)
  • Pressures up to 9,100 psig (630 bars) or 58,000 psig (4,000 bar) using high-pressure adapters or flanges
  • Easily cleaned; designed to flush particulates through the meter with the fluid media
  • Available with dairy connections as per DIN 11851, suitable for food applications
  • Available with Tri-Clamp connections, suitable for pharmaceutcal applications
  • Sapphire bearings enable excellent low-flow performance
  • Factory calibrated, traceable to NIST


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