Product Overview Air Distribution
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Product Overview High-quality air flow control components with innovative technology. Unsurpassed in control precision and energy efficiency.

LTG Aktiengesellschaft Air Technology Solutions for Humans and Products. Air-Water Systems

LTG air distribution products meet the highest standards for quality and efficiency. For almost 90 years, LTG has pioneered air and climate technology, always a step ahead with trailblazing innovations. When it is crucial to achieve ideal environmental conditions for people and processes, LTG creates inspiring, tailor-made comfort air technology solutions: These include products for air distribution (flow rate and pressure controllers as well as shut-off valves), air diffusers and air-water systems (such as induction units and fan coil units). Air distribution products are essential for the...

LTG Air Distribution Product Overview Flow Rate Controllers Square To combine with customised drives; also available in PPS Without external power supply, pollution-insensitive LTG Map Control System ActiveControl. Highest precision, short installation length LTG Map Control System ActiveControl. Highest precision, short installation length To combine with customised drives; also available in PPS Without external power supply, pollution-insensitive All variable flow rate controllers are availabe with dynamic or static measuring principle. Pressure Controller Round DRE To balance extreme...

Best Air Conditioning Solution for any Room Situation LTG Aktiengesellschaft is your reliable partner in the area of room air technology. We lay the foundations for perfect room climate with innovative and unique solutions such as flow rate controllers with map control and enhanced differential pressure (System ActiveControl). LTG will provide access to our specialist know-how from the first request to detailed planning. Air-Water Systems Example System C of the VDI 3804: Room temperature and ventilation with induction devices In the VDI 3804 all essential ventilation and air condition...

Volume Control Flow Rate Control Basics – Which Product for which Application? Unit Types Variable Flow Rate Constant Flow Rate Units with variable flow rates (VVS) use electronic flow rate controllers providing the room with exactly the required air volume – according to function and energy efficency. See pages 8-11 for products to control variable air volumes. Units with constant flow rates (KVS) use flow rate controllers maintaining a constant flow rate mechanically system-powered. Working with no wiring or external power supply, they provide convenient and cost-saving solutions. See...

Unique and Brilliant – LTG Map Control Differential pressure + Damper setting = Flow rate Contrary to common measuring techniques, the differential pressure is not measured using an upstream element such as orifice plate or differential pressure sensor. Flow rate controllers VREactive and VRFactive measure the differential pressure directly in the damper blade area (stronger signal due to locally accelerated air flow). Locally accelerated air flow at the measuring point Enhanced differential pressure in low air speed ranges Orice 100 This measuring technique provides the most precise...

Variable Flow Rate Controllers Variable Flow Rate Controllers with LTG Map Control VRFactive VRFactive Variable Flow Rate Controllers of VRactive series are designed for supply pressure-independent control of constant or variable air flows. For dynamic (VRactive) and static (VRactive-s) measuring. Advantages Optimum use of your plant´s energy-saving potential Highest precision of all known measuring systems due to LTG map control Manages even lowest air speeds due to enhanced differential pressure One system for round and rectangular ducts, available with dynamic or static measuring...

Highest precision VRFactive Highest precision VRDactive 2 dampers for supply / return air control in parallel air ducts (e.g. hotel rooms) n  dynamic (for non-polluted air) o  static (for polluted air)1) Measuring principle Design Galvanised steel Stainless steel Sizes [mm] Installation length* [mm] Flow rate range [m³/h] · Control ratio Vmax : Vmin Differential pressure range [Pa] Deviation Input / control signal Insulated case Manual Operation *  Only one length per nominal width available 1) VRactive-s Engineering Services Shut-off Dampers Const. Flow Rate Controllers Var. Flow Rate...

Variable Flow Rate Controllers Variable Volumenstromregler VRE-W / VRF-W / VRD-W VRFactive / VRDactive Dimensioning VREactive /  Selection Guide The right flow rate controller – quick and easy. Simply select the right model size from each table based on diameter, shape (rectangular or round) and required flow rate. Round · · Vmin = 0,2 x V · · · Vnenn = Vmax = 2 x V Width [mm] · · Vmin = 0,2 x V · · · Vnenn = Vmax = 2 x V Required straight inflow distances A straight, undisturbed inflow distance of at least 1 x D in front of the flow rate controller is required. There are, however, no...

With VRE, VRD and VRF flow rate controllers, both constant and variable flow rate control are easy. Type VRC + NE additionally includes a reheating feature. All controllers are suitable for use in polluted or chemically laden environments. Pressure Controllers Variable Flow Rate Controllers Const. Flow Rate Controllers Var. Flow Rate Controllers Corrosion resistant versions available Galvanised steel, coated, stainless steel, or PPS o SDE Diff. pressure range [Pa] Box leakage acc. to DIN EN 1751 Airtight shut-off Standard n  n  dynamic (for non-polluted air) o  static (for polluted air)...

Constant Flow Rate Controllers Constant Flow Rate Controllers (mechanically self-operated) The mechanically self-operated flow rate controllers VRW, VRX, and VRW-A (with shut-off feature) are designed for supply pressure-independent constant flow rate control without external power supply (except VRW-A shut-off damper option). Advantages Flow rate control without external power supply – no wiring required Maximum flexibility – free setting of flow rates Insensitive to dust or environmental influences – maintenance-free with reliable precision control Product Data Sizes [mm] Version Silencer...