Type VZ VA Gearwheel flow sensors with threaded connection stainless steel housing 0. 008...250l/min

Operating instructions for SIKA gear wheel flow sensor type VZ VA - Gear wheel flow sensor with threaded connection

The SIKA VZ VA gear flow sensor is a high-precision measuring device for volume flows with high and varying viscosity in a wide range of applications. With a flow range of 0.008 to 250 l/min and a stainless steel housing, the VZ VA offers excellent measurement accuracy and repeatability. It is versatile and is used in consumption measurement, control of filling processes, dosing of oils and chemicals as well as in the collection of paints and varnishes.

Areas of application:

The VZ VA series gear flow sensors are ideal for precise measurements of liquid flows with variable viscosity. Typical applications include:

• Consumption measurement in industrial processes
• Filling process control in production plants
• Dosing of oils and chemicals in the chemical industry
• Measurement and collection of paints and varnishes in the coatings industry

Mode of operation:

The sensor's measuring unit consists of a precisely manufactured pair of gears housed in the casing. The inflowing medium moves the pair of gears and the rotational movement of the gears is detected by non-contact sensors. Each tooth of the gearwheel generates a pulse, which enables a very high resolution and therefore precise measurement of even the smallest volumes.

• Two-channel system: To generate a frequency signal proportional to the flow rate, two sensors are installed in the measuring unit offset by ¼ tooth width. This enables a higher resolution and detection of the flow direction.
• Precise measurement: As each tooth of the gearwheel generates a pulse, the sensor offers high accuracy and repeatability, even with small volume flows.

Main features:

• Flow range: 0.008...250 l/min
• Measuring principle: gear wheel with non-contact detection of the rotational movement
• Housing material: stainless steel, ideal for use in various media
• Temperature range: Optionally available as HT version for temperatures up to 150 °C with thermally insulated preamplifier
• Sealing materials: Available in FKM, FEP and EPDM for a wide range of media
• Maximum pressure drop: 16 bar, limited by highly viscous media

Advantages:

• High precision and repeatability: Thanks to the precise gear mechanism and sensor technology, the VZ VA offers excellent measuring accuracy at different viscosities .
• Versatile application possibilities: The sensor can be used universally for various media such as oils, chemicals, paints and varnishes.
• Robust stainless steel housing: Thanks to its stainless steel housing, the sensor is extremely robust and suitable for use in demanding industrial environments.
• Quick installation: The standard process connection via connection plates enables quick replacement without the need for long process interruptions.
• Thermally insulated preamplifier (option): A version with an insulated preamplifier is available for applications at high temperatures up to 150 °C.

Sizes and connection options:

• Available sizes: The sensor is available in various sizes, including 0.025, 0.04, 0.1, 0.2, 0.4, 1, 3 and 5.
• Process connections: Available with G3/8, G1/2 and G1 connection plates for integration into process systems.
• Sealing materials: Depending on the application, seals made of FKM, FEP or EPDM can be selected.

Technical data:

• Flow range: 0.008...250 l/min
• Temperature range: Up to 150 °C with HT version
• Maximum pressure drop: 16 bar, depending on the viscosity of the medium
• Housing material: stainless steel
• Seals: FKM, FEP, EPDM

Summary:

The SIKA VZ VA gearwheel flow sensor offers a highly precise and robust solution for flow measurement of high and low viscosity liquids. With its high repeatability, fixed pulse rate and versatility, the VZ VA is ideal for industrial applications such as consumption measurement, dosing and filling process control. The robust design and the availability of HT versions for high temperatures make it a durable and reliable solution in demanding environments.