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DM series flowmeters

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The Avery-Hardoll Steel DM Series flowmeters are precision made, positive displacement, liquid measuring instruments that maintain the highest level of accuracy over a lifetime of operation.

The DM meter is specifically designed to meet the rigorous demands of modern tank truck loading depots and fuel storage facilities as well as other niche applications.

It provides the highest level of pre-calibration repeatability and accuracy with industry leading ease of service without the inconvenience and cost of double-cased meters.


FEATURES:
The DM Series Meter with Liquid Controls Pulse Output Device (POD)

The DM Series Meter with Liquid Controls Pulse Output Device (POD)

The BM Series flow-meter directly converts volume to rotational output with minimum scope for error and with minimal disturbance from surrounding conditions, such as turbulence from nearby valves, bends, and other system conditions.

  • FLOW RATE: 660 GPM (2500 LPM) Continuous
  • MAX FLOW RATE: 800 GPM (3000 LPM) Intermittent
  • FLANGES: 4” ANSI 150 (RF or FF)
  • MAX WORKING PRESSURE: 230 psi (16 bar)
  • VOLUME PER REVOLUTION: 1.5 gallons (5.75 liters)
  • ACCURACY ±0.075% with linearized pulser, ±0.125% or better with bare meter. REPEATABILITY 0.02% or better
CONSTRUCTION:
  • BODY: CARBON STEEL - ASTM 216 WCB
  • END COVERS: CARBON STEEL
  • ROTOR: ALUMINUM ALLOY
  • VANES: CARBON
  • BEARINGS: NON CORRODIBLE STAINLESS STEEL
  • SEALS: HIGH NITRILE or FLUOROCARBON

OPERATION:

The product enters the meter and causes the rotor to revolve by pressure on the vanes. The proximity of the rotor to the body forms an efficient seal, while the profile of the body ensures that the vanes are guided through the measuring crescent, where the volume of product is accurately measured.

An extension shaft driving through a pressure tight gland in the meter front cover, transmits the rotor revolutions either directly to a pulse transmitter or by gearing to a step-less mechanical calibrator driving a mechanical register.

A calibrating mechanism and mechanical register are also attached to the front end cover. The calibrating mechanism can be replaced by a front cover incorporating a pulse transmitter when required for electronic systems, such as MASTERLOAD II™ and LCR.iQ™ registers.

DM Series Meter - operation

KEY DIMENSIONS:
DM Series Meter - dimensions

ACCURACY:

The positive displacement principle is the only accurate method of measuring liquid flow. No other technology can achieve the same level of volumetric accuracy. This is particularly true in depot applications where flow rates, pressure and temperature can vary during a delivery.

The Avery-Hardoll flow meter positively measures fluid volume with minimum scope for error and with minimal effect from pressure variations, temperature change or turbulence from near by valves or bends. While conventional meters are calibrated at only one flow rate, the DM-series Bulkmeter with MASTERLOAD.iQ electronic registers with Pulse Output Device (POD) can be calibrated over multiple points across the low range to provide the absolute highest level of accuracy.

DM Series Meter - Accuracy curve

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