CS Instruments VA 409 Flow Direction Switch For Compressed Air Systems

Description

The CS Instruments VA 409 Flow Direction Switch For Compressed Air Systems represents a significant upgrade over former mechanical paddle flow switches. By utilizing a thermal detection principle, the VA 409 eliminates the mechanical wear and inertia associated with paddle switches, enabling it to respond to flow changes without any mechanical movement. This ensures reliable operation and minimal maintenance.

The device is engineered to transfer direction information efficiently. It utilizes a potential-free contact to send signals to consumption sensors like the VA 500 or VA 520, or directly to a separate building management system (mbs). When connected with two consumption sensors (VA 500/VA 520), the VA 409 enables the precise measurement of both incoming and outflowing compressed air within closed circular pipelines, ensuring comprehensive system monitoring. Two LEDs directly on the unit show the current flow direction for immediate on-site verification.

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

Response area detection of direction:
< 0.1 m/s relative to 20 °C
and 1000 mbar
Measuring principle: Calorimetric
measurement
Sensor: Pt 30/ Pt 700/ Pt 330
Measured medium: Air, gases
Operating temperature:
0…50 °C sensor tube
-20…70 °C housing
Operating pressure: up to 16 bar
Power supply: 24 VDC, 40 mA
Current consumption: Max. 80 mA to 24 VDC
Protection class: IP 54
EMC: in acc. with DIN EN 61326
Connection: 2 x M12, 5-pin, plug A and
plug B
2 potential-free contacts:
2 x U max. 60 VDC, l max
0.5 A (normally closed); on
request: Normally open
Housing: Polycarbonate
Sensor tube: Stainless steel, 1.4301,
length 160 mm, Ø 10 mm,
safety ring Ø 11.5 mm,
longer sensors on request
Mounting thread: G 1/2″
Housing diameter: 65 mm
Direction indication: 2 LED`S

Features

Thermal Detection Principle: Detects flow direction without any mechanical movement.
High Sensitivity: Able to detect even the smallest changes in the flow direction quickly.
Visual Indication: Two LEDs show the flow direction explicitly.
System Integration: Transfers direction information via potential-free contact to sensors or building management systems.
Enhanced Measurement: Enables precise measurement of incoming and outflowing air in circular pipelines when paired with VA 500/VA 520 sensors.