SCHAKO VQEX ATEX Rectangular Volumetric Flow Controller

SCHAKO VQEX ATEX Rectangular Volumetric Flow Controller is a rectangular volumetric flow controller made of galvanized steel. Suitable for use with aggressive components of polluted air and specially designed for use in areas subject to explosion hazards. Approved for all gases in zones 1, 2 and for dusts in zones 21, 22 with ATEX approval. Can also be used in zones 1 and 2 of explosion group IIC. This comprehensive approval guarantees safe operation even in most hazardous industrial environments. Used for pressure-independent volumetric flow regulation in ventilation and air-conditioning systems. Serves to keep volumetric flow either constant within specified limits (CAV) or to control it variably (VAV). Provides closed control loop with feedback. Housing, measuring sensor, control flap, PID controller with pressure sensor and actuator form a closed control loop with feedback. This system allows demand-dependent, energy-saving air conditioning and optimally controls single rooms or areas of air-conditioning systems. Provides reliable operation in harsh environmental conditions with IP66 protection index control components. Offers superior protection against dust, moisture and other external factors. Guarantees long-lasting performance in harsh conditions of industrial environments. Provides precise pressure control in 0-300 Pa measuring range. Works at ambient temperatures from 0°C to +50°C and delivers reliable measurement performance in measuring air conditions of 0-+50°C, 5-95% relative humidity (non-condensing). Controlled with 0-10V DC and 2-10V DC command signal. Works with 24V AC/DC ±15% supply voltage (50/60Hz). These standard signal ranges provide compatibility with most industrial control systems and offer easy integration opportunity. Provides special protection for aggressive media with DD varnish coating. Offers durability even in harshest chemical conditions with 1.4301 stainless steel option for HKU. Shows superior resistance against corrosive gases and aggressive chemicals. Regulates air velocity in duct in range of 2-13 m/s. This wide speed range meets different application requirements and provides system flexibility. Feature of being usable with vertical axis increases mounting options. Provides precise control in Vmin, Vmid, Vmax, "OPEN" or "CLOSED" positions with positive control feature. This feature provides great convenience in system installation, testing and maintenance operations. Operator can fix system to desired position. Works within 291-47081 m³/h very wide volumetric flow range. This extraordinary capacity spectrum provides usage opportunity in projects of all sizes from smallest applications to largest industrial facilities. Provides perfect compatibility with rectangular duct systems with rectangular design. Compatible with standard duct dimensions and system integration is easy and rapid. Installation and maintenance operations can be performed practically. Since membrane zero point must not be changed in static sensors, mounting instructions documented by manufacturer must be adhered to. Not suitable for air containing sticky and greasy particles (e.g. kitchen exhaust air).