CS Instruments VA 420 Flow Sensor With Integrated Measuring Section

Description

The CS Instruments VA 420 Flow Sensor With Integrated Measuring Section is engineered to provide precise data for energy management and system diagnostics. It is particularly effective for determining leak rates; during machine shutdown, the sensor identifies leakage air, while it measures actual flow when the machine is running. This dual capability makes it a valuable tool for compressed air balancing and consumption measurement.

For data integration, the device provides robust output options for connection to a building management system or PLC. It features a 4…20 mA output for actual flow and a galvanically separated pulse output for total consumption. Users can easily select their preferred units via the keypad, including m³/h, m³/min, l/min, l/s, kg/h, kg/min, kg/s, and cfm. The power supply is managed effectively via the power socket by means of the mains unit.

Brand

CS Instruments

CS Instruments GmbH & Co. KG with locations in 24955 Harrislee and 78052 Villingen-Schwenningen/ Tannheim, is managed by Dipl. Eng. (FH) Wolfgang Blessing as sole Managing Director.

CS Instruments GmbH was established in the year 2002 by Christian Schuldt and Wolfgang Blessing as equal shareholders/Managing Directors.

Wolfgang Blessing already was sound a specialist on the sector of compressed air technology resp. industrial measurement technology long before the establishment of CS Instruments GmbH in the year 2002. Prior to the foundation of CS Instruments GmbH Dipl. Ing. (FH) Wolfgang Blessing acted for more than 10 years as primarily responsible product manager for industrial measurement technology at a worldwide known manufacturer of measuring instruments for compressed air and gases in the Black Forest. The technical knowledge and experience matched with the long-term practical knowledge was the corner stone for the success of CS Instruments.

Specifications

Parameters: m³/h, l/min (1000
mbar, 20°C) in case
of compressed air
resp. Nm³/h, Nl/min
(1013 mbar, 0°C) in
case of gases
Adjustable via
keypad:
m³/h, m³/min, l/min,
l/s, ft/min, cfm, m/s,
kg/h, kg/min
Meas. principle: calorimetric measurement
Sensor: 2 x silicium chip
Meas. medium: air, gases
Gas types
adjustable via
software:
air, nitrogen, argon,
nitrous oxide, CO2,
oxygen
Meas. range: see table at the left
Accuracy: ± 1.5% of m.v., ±
0.05% of f.s. On
request: Special calibration via 5 point ISO
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Operating temp.: -30…80 °C
Operating press.: up to 16 bar
Optional up to PN 40
Analogue output: 4…20 mA for m³/h
resp. l/min
Pulse output: 1 pulse per m³ resp.
per liter galvanically
separated
PC connection: SDI interface
Power supply: 24 VDC smoothed ±
15 %
Burden: ȍ
Housing: polycarbonate
Meas. section: stainless steel,
1.4301 or 1.4404
Mounting thread
meas. section:
R 1/4“, R 1/2“,
R 3/4“, R 1“, R 1 1/4“,
R 1 1/2“, R 2“
external thread

Features

Affordable flow meter working according to the calorimetric measuring principle.
Compact design suitable for 1/4 inch to 2 inch systems.
Easy and affordable installation using quick couplings.
Units freely selectable via keypad including m³/h, l/min, and cfm.
Available with and without flange.

Applications

Compressed air balancing and consumption measurement.
Leakage air and leak rate determination.
Mobile compressed air measurement in front of single machines or plants.
Flow measurement of process gases like nitrogen, CO2, oxygen, argon, and nitrous oxide.
Flow measurement at nitrogen generators.