Products » Flow Meter

Flow meters and flow measurement equipment for compressed air and gas

Fow meters from CS Instruments work according to the calorimetric measuring principle. This means, while measuring the thermal mass flow or standard volume flow, no additional temperature and pressure compensation is necessary. The standard volume is a common volumetric unit used to compare gas quantities at different pressures and temperatures. In order to meet various standards, the reference conditions can be set directly on the display of each flow meter. Thus, our reliable flow meters provide consumption and flow measurement within the individual standard our customers wish to use them.

If you need further advice simply contact us and we will help you finding the correct flow meter or flow measurement equipment for your individual application needs.

VA 550 - Flow meter for heavy duty industrial applications

in measurement of compressed air and gases. ATEX version available for applications in explosive areas.

VA 570 - Flow meter with integrated measuring section

The measuring sections are available in flanged version or with R resp. NPT thread.

VA 500 - Flow meter for compressed air and gases.

RS 485 interface, Modbus RTU, 4...20 mA analogue output for m³/h, Pulse output for m³.

VA 520 - Flow meter with integrated measuring section

Our flow meter for compressed air and gases with newly developed evaluation electronics records all measured values digitally.

PI 500 for e.g. portable flow measurement

The PI 500 is an all-purpose hand-held measuring instrument for many applications in the industry.

DS 400 - Flow measurement for compressed air and gases

consisting of: Chart recorder DS 400 and flow sensor VA 500

Flow sensor VA 400 for compressed air and gases

available in a robust housing with and without display. Depth scale for accurate installation. Usable from 1/2" to 12" (DN 300).

Flow sensor VA 420 with integrated measuring section

Intelligent solutions for flow measurement of compressed air and gases. With and without flange available.

Intelligent chart recorder DS 500 for compressed air and gases

Up to 12 optional sensors can be connected. 7" colour screen with touch panel.

Intelligent mobile chart recorder - DS 500 mobile

Energy analysis according to DIN EN ISO 50001, flow measurement, leakage calculation at compressed air systems.

Chart recorder - DS 400

3.5" graphic display with touch screen. Option integrated data logger. Up to 4 sensor inputs. Option Ethernet / RS 485 interface.

Affordable mobile chart recorder in a case - DS 400 mobile

for energy analysis, flow measurement, leakage calculation at compressed air systems.

Flow direction switch for compressed air systems VA 409

serves for determination of the flow direction of compressed air and gases especially in closed circular pipelines and detects smallest changes <0.1 m/s.

Useful accessories

Measuring sections for precise measurements

Measuring section made of stainless steel 1.4301 incl. ball valve, up to DN 65 (R2 1/2") with external thread, from DN 80 with weld neck flange according to DIN 2633.

Spot drilling collars

If there is no measuring site with 1/2" ball valve present it can be set up by means of spot drilling collars.

Drilling jig for set up a measuring site

By means of a special drilling device a measuring site with 1/2" ball valve can be easily set up within a few minutes.

High-pressure protection

The supplementary device "high-pressure protection" serves for a safe installation and fastening of the CS sensors VA 400 under pressure.

Thickness meter CS 0495

enables a quick, easy and accurate measurement of the wall thickness of pipes.

Experience and competence in compressed air and gas

CS Instruments has been an expert in the field of consumption measurement and flow measurement for many years and serves customers worldwide with the most advanced and field proven flow meters. For this reason, we offer a wide range of tools for almost any application needs. The consumption sensors of our VA550 and VA570, for example, have been developed especially for rough industrial applications. Thanks to their robust, impact-resistant aluminum die-cast housing, these flow meters can easily be installed outdoors (IP65). On request, we also offer an ATEX approval for our flow meters. Those flow measurement devices can be used up to a maximum pressure of 100 bar and a maximum temperature of 180 °C. Our direct immersion variants are the ideal flow meters for existing compressed air and gas lines and can be easily installed and removed under pressure via a ½" ball valve. Those flow sensors are available with different shaft lengths and can also be used in very large pipelines > DN 1000 or rectangular ducts.

Why to choose a flow meter from CS Instruments

Within the package of our flow measurement devices there is always a factory calibration certificate. Optionally, ISO certificates are also available, which can be traced back to the national standard. While ISO 1217 (1000 mbar, 20 ° C) is generally used to measure compressed air flows, DIN1343 (1013 mbar, 0 ° C) is used to measure most industrial gases. In addition to the consumption measurement, our flow meters can also be used for leakage measurement and leak detection. Therefore, our flow measurement devices are the perfect all-in-one tools to provide users with all necessary information on possible energy savings.

In contrast to many other working principles, the pressure loss resulting from our consumption measurement method is negligible. Each consumption meter can be equipped with various interfaces and thus ensures the connection to your control technology, data loggers or evaluation devices. These include e.g. 4 ... 20mA, pulse, Modbus RTU, M-BUS or even Ethernet. Our thermal mass flow meters can also cover a wide range of applications and media (compressed air, carbon dioxide, vacuum, nitrogen, oxygen, ozone, natural gas, hydrogen, argon, helium, biogas, etc.)

Which flow measurement device is for you

Our philosophy is to help our customers finding the products that exactly meet with their needs. Therefore, we are looking forward to give you a free consultation which flow meter or flow measurement equipment would be the correct choice for you. Just use our contact form or simply give as a call.



Zindelsteiner Straße 15
D-78052 VS-Tannheim
P: +49 7705 978 99 0
F: +49 7705 978 99 20