Gear Flow Meters (ZHM)

Accurate Measurement of different liquids

for lubricating and non-lubricating liquids

Gear flow meters (ZHM) are positive displacement meters. Two precise gears rotate freely inside the measuring chamber. Sealed cavities are created between the gears and the housing. The measured media causes the rotation of the gears. The flowing medium is distributed evenly in the measuring chamber and causes the rotation of the gears. The gear wheels rotate freely and undamped in the media flow. Their rotational frequency is proportional to the flow rate and is measured by non-intrusive sensors (pickups) through the housing wall.

These meters are suitable for accurate measurement of different liquids with viscosities of approximately 1 to 25,000 mm²/s.

Features

* Large measuring range (0.002 l/min to 1,000 l/min)

* Outstanding reproducibility

* Short response time

* High resolution

* Pressure resistant up to 1,035 bar

* Corrosion-resistant materials

* Robust construction with a long service life

* Also suitable for use in ESTA systems

Turbine Flow Meters (HM)

Particularly suitable for low and medium viscosity media

measure continuous and discontinuous flow rates

Turbine flow meters (HM) are volume counters operating on the Woltmann impeller counter principle. They record the flow rate in the flow-through in a pipe via the average flow velocity. The flow of the medium is directed at the turbine wheel in the axial direction and so rotated. The speed of the freely turning wheel over a wide range is directly proportional to the average flow velocity. Turbine flowmeters are used mainly for applications with lubricating and non-lubricating media. They are especially well suited for the flow rate measurement of low and medium-viscosity liquids such as water, emulsions, glycol mixtures, and light oils. Measuring cryogenic liquids is possible as well. Numerous different process connections are available thanks to the flexible design.

Features

* Large measuring range (0.3 l/min to 13,400 l/min)

* Short response time

* Low pressure loss

* Pressure resistant up to 4,000 bar

* Corrosion-resistant materials

* Robust construction with a long service life

* Medium Temperature: -60 °C up to +350 °C [-76 °F up to +662 °F]

* Resistant to contaminants

Helical Flow Meters (SRZ)

Ideal solution for measurement of high-viscosity media

for high-viscosity and abrasiv media

The helical flowmeter (SRZ) works according to the displacement principle. Two cycloidal helical spindles with geometrically lapped profiles that interlock with high precision lie in a cylindrical housing. This creates enclosed measuring chambers between the spindle profiles and the wall of the housing. These transport the medium being measured. The medium is forcibly guided and flows through the measuring chamber bores in the axial direction, causing the spindles to rotate. This process is pulsation-free with minimum leakage. The rotational speed of the spindles is exactly proportional to the volume flow over a very wide range. Impulses per unit of volume are available for the analysis. Thanks to the minimal pressure loss and low shearing, the KEM helical flowmeter is especially well suited for measuring high-viscosity media.

Features

* Large measuring range (0.04 l/min to 400 l/min)

* Very high resolution

* Outstanding reproducibility

* Wide measuring span

* Low pressure loss

* Corrosion-resistant materials

* Robust construction with a long service life

Micro Flow Meter (LFM)

for low-viscosity fluids in dosing and filling systems

The LFM micro-flowmeter is suitable for low-viscosity fluids in dosing and filling applications of all kinds. Its measuring element is based on the principle of a double ring piston meter. Thanks to the low pendulum mass and minimal frictional losses, the LFM responds to even the smallest volume flows. Only high-grade stainless steel that even withstands corrosive media is used in the production of the micro-flowmeter. The high-precision measuring element and extremely tight production tolerances of the single components minimize leakage and thereby guarantee good linearity and reproducibility of the LFM.

Technical Data

* Measuring Range: 0.005 up to 0.25 l/min

* Viscosity: 0.6 up to 6 mm²/s

* Linearity: ±2.5 % of actual flow

* Materials:

Housing: as per DIN 1.4435 [AISI 316 L]

Pendulum: as per DIN 1.4122

Ring Piston: as per DIN 1.4122

Seals: PTFE, FFKM, FKM

* Pressure: max. 100 bar [1,450 psi]

* Medium Temperature: -20 °C up to +120 °C [-4 °F up to +248 °F]