Flow Measurement & Control

Kobold’s calorimetric flow meter

January 2021 Flow Measurement & Control

Instrotech has introduced Kobold’s KAL-D flow meters with an integrated microcontroller that allows users to adapt the device to individual process conditions. Its intelligent compensation function ensures stable switching points, even during significant temperature fluctuations.

The electronic flow monitor model KAL-D works according to the calorimetric principle, continuously monitoring water-based liquids. The sensor tip is heated to a few degrees above the temperature of the flowing medium. When the medium flows, heat generated in the probe is dissipated by the medium. In other words, the probe is cooled down. This cooling sequence precisely measures the flow velocity.

The sensor signal is compared with reference data stored in a microcontroller. An alarm signal is generated when the desired flow velocity is reached. Simple calibration and optimal temperature compensation is achieved with a microcontroller.

The KAL-D finds service in all applications where flow currents, with minimum pressure loss, need to be accurately monitored. The one-part design of the measuring probe also considerably reduces dirt sensitivity. Other features include:

• Switching range: 0,04-2 m/s (liquids); 1-20 m/s (air).

• Connections: G ¼, G ½, NPT, M12 x 1.

• Material: stainless steel.

• Maximum pressure: 100 bar (process pressure).

• Maximum temperature: 120°C (process temperature).

• Repeatability: 2%.

• Wide range of process connections; easy to customise, commission and install.

• No moving parts.


Share this article:
Share via emailShare via LinkedInPrint this page

Further reading:

Pyrometers for fast processes
October 2021, Instrotech , Temperature Measurement
With very fast processes, the requirements of the pyrometers used for temperature measurement are especially onerous.

How are infrared cameras calibrated?
October 2021, Instrotech , Maintenance, Test & Measurement, Calibration
Infrared thermometers are calibrated with the help of reference radiation sources called black bodies, which can produce different temperatures with high stability.

Safe supply in CNG operations
September 2021, SICK Automation Southern Africa , Flow Measurement & Control
The Flowsic500 compact ultrasonic gas meter enables extremely accurate natural gas distribution measurement.

High-speed pyrometer from Optris
September 2021, Instrotech , Temperature Measurement
With very fast processes, the requirements of the pyrometers used for temperature measurement are especially onerous.

Multi-application radar level transmitters
September 2021, Instrotech , Level Measurement & Control
Instrotech now offers Kobold’s NGR, a robust, maintenance-free level sensor that uses TDR (time domain reflectometry) technology.

Accurate flow measurement on a conveyor
August 2021, SICK Automation Southern Africa , Flow Measurement & Control
Heidelberg Cement in Lengfurt, Germany, needed a solution for the accurate metred supply of secondary material on its conveying system.

Flowmeter with IO-Link
August 2021, GHM Messtechnik SA , Flow Measurement & Control
The calorimetric measuring principle makes this new Honsberg meter practically wear-free and gives users the ability to record media temperature in addition to flow measurement.

Resistance thermometers for hazardous areas
August 2021, Instrotech , Temperature Measurement
Instrotech now offers Kobold’s TWL resistance thermometers with ATEX approvals for ignition protection Exd or Exia.

Electronic flow switch with display
August 2021, WIKA Instruments , Flow Measurement & Control
The new model FSD-4 electronic flow switch from WIKA offers full flexibility in monitoring and controlling flow based on the velocities of liquid media.

Changeover in pharma production
August 2021, Instrotech , System Integration & Control Systems Design
Instrotech, through its principal, Siko, increases the efficiency and production quality of machines by offering intelligent positioning systems for machine manufacturers and end users in the pharmaceutical industry.