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DREactive

Product catalog summary

Overview: This technical brochure from LTG Aktiengesellschaft focuses on the DREactive pressure controller designed for HVAC systems. It covers product specifications, applications, installation guidelines, and technical data.

Specifications:

Differential pressure control capability up to 1000 Pa.
Air leakage rate compliant with DIN EN 1751, class 4 (DN 100/125: class 3).
Housing tightness class C as per DIN EN 1751.
Measurement accuracy ranges from ±5% (Vnom) to ±15% (Vmin).
Flow velocity measuring range: 1 to 10 m/s.

Design and Functionality:

Compact unit with housing, control unit, and air flow measuring device.
Pressure control via static pressure measurement and damper regulation.
Direct air flow measurement at the damper blade for enhanced accuracy.

Materials and Options:

Galvanized steel housing and damper blade.
Optional insulation shell made of mineral wool with a steel jacket.
Available in powder-coated or stainless steel versions.

Installation Guidelines:

Requires straight flow paths for accurate measurement.
Pressure tap should be located at a straight, flow-favorable point.

Technical Data:

Nominal sizes range from 100 to 400 mm.
Operating temperature: 0 to 50°C.
Air flow range: 27 to 4479 m³/h.
Power supply: 24 V AC/DC with a power consumption of 3.6 W.

Applications:

Ideal for duct pressure control in HVAC systems, ensuring uniform inlet pressure.
Suitable for applications with limited space and high measurement accuracy requirements.

Acoustic Data:

Airborne sound transmission data provided for various air velocities and diameters.

Technical Brochure Overview: The document also details specifications and performance of various air technology products, focusing on pressure controllers and noise emission characteristics.

1. Specifications: Detailed specifications for pressure controllers, including variable air flow controllers (VAV), constant air flow controllers (KVS), and pressure controllers with and without flow path feedback.

2. Noise Emission Data: Extensive data on structure-borne and airborne noise emissions, with and without insulation shells, including sound power levels (LW) and sound pressure levels (LpA).

3. Product Range: Includes variable air flow controllers, constant air flow controllers, pressure controllers, silencers, and highly airtight shut-off dampers.

4. Key Parameters and Recommendations: Highlights the importance of considering resonance effects and the need for technical updates.

5. Contact Information: LTG Aktiengesellschaft is based in Stuttgart, Germany, with contact details provided for further inquiries.

Catalog excerpts

Let‘s realize the potential of air for a sustainable world Pressure regulator with air flow feedback DREactive The DREactive is ideal for applications with limited space, low air velocities, high measurement accuracy requirements, and when pressure control and volume flow measurement need to be combined in a single unit. Differential pressure control up to 1000 Pa Air leakage rate according to DIN EN 1751, class 4 (DN 100/125: class 3) Housing tightness class C accord. to DIN EN 1751 Short installation lengths due to measurement at the damper blade Low pressure losses Energy savings, quiet operation Large measuring range: 1...10 m/s Measuring accuracy: ±5 % (Vnom) to ±15 % (Vmin) Lip seal as standard Retrofittable insulation shell W W W . L T G - A G . CO

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LTG Comfort Air Technology | Technical brochure Pressure controller DREactive, round Contents Page Application range, structure, mode of operation, materials, options, accessories 2 Air flow range, minimum pressure differences, function 3 Ventilation systems with pressure controllers 7 Nomenclature, order code 8 Technical data, controller components 9 © LTG Aktiengesellschaft, Grenzstrasse 7, 70435 Stuttgart , Germany Tel. +49 711 8201-0, Fax +49 711 8201-720, [email protected], www.LTG-AG.com Previous editions are invalid. Subject to technical changes.

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LTG Comfort Air Technology | Technical brochure Pressure controller DREactive, round Application range Materials - Duct pressure control in HVAC systems - Ensures uniform inlet pressure at air flow controllers, in- duction units, air diffusers - Optional: Full shut-off possible - Air flow measurement for display, balancing, or control - Housing, damper blade, shaft: galvanized steel - Seals: EPDM Options, accessories - Powder coating (RAL 9010), Design - Compact unit with: Housing with damper blade, Control unit including differential pressure sensor & actuator, air flow measuring device Stainless...

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LTG Comfort Air Technology | Technical brochure Pressure controller DREactive, round V min - Minimum air flow = lower control limit Vnom - Nominal air flow Apmin - Minimum pressure loss How does DREactive work? With the DREactive, it is possible to control the pressure and simultaneously measure the air flow precisely. The advantage is that when the extract air is open, the actual air flow can be recorded and extracted almost identically. Two electrical components are integrated for this purpose: one measures the air flow directly at the control damper, while the other records the pressure at...

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LTG Comfort Air Technology | Technical brochure Pressure controller DREactive, round Installation, placement Required straight flow paths Minimum flow paths for DREactive When installing the DREactive, it is essential to observe the air direction marking on the housing. Only when correctly aligned can the integrated air flow measuring device work accurately and ensure reliable control. For accurate measurement, a straight flow path of approx. 0.5 to 3 x D (corresponding to the pipe diameter) must be maintained upstream of the DREactive. This flow-calmed section is necessary to minimize turbulence...

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LTG Comfort Air Technology | Technical brochure Pressure controller DREactive, round © LTG Aktiengesellschaft, Grenzstrasse 7, 70435 Stuttgart , Germany Tel. +49 711 8201-0, Fax +49 711 8201-720, [email protected], www.LTG-AG.com Previous editions are invalid. Subject to technical changes.

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LTG Comfort Air Technology | Technical brochure Pressure controller DREactive, round 1st variant Ventilation systems with pressure controllers and slave-controlled air flow control Pressure controller DREactive, with integrated air ow measurement Variable air ow controller VRFactive Pressure measuring point Variable air ow controller VREactive Air diffuser combination LWK with integrated sound insulation Air diffuser combination LWK with integrated sound insulation Air diffuser combinations LWK with integrated sound-absorbing baffle Office room Office room Meeting room DREactive application example:...

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LTG Comfort Air Technology | Technical brochure Pressure controller DREactive, round Nomenclature, order code DREactive / 100 / S / D / L / GUAC (1) (2) (3) (4) (5) (6) (7) DREactive = Pressure controller round, with air flow measuring device dynamic (standard) Additional order information Please specify when ordering: DREactive Air flow feedback signal: Mode 0...10 V or 2...10 V Differential pressure: Pm,n [Pa], Pmax [Pa] Control Analog or Modbus Without this information, the following factory settings will be delivered: - Mode 0...10 V - Control Analog Order example DREactive 100/S/D/L/GUAC,...

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LTG Comfort Air Technology | Technical brochure Pressure controller DREactive, round APtotal - Total pressure difference fm - Centre frequency of the octave band Lw - Sound power level Lwa - Sound power level, A-weighted LpA - Sound pressure level, A-weighted © LTG Aktiengesellschaft, Grenzstrasse 7, 70435 Stuttgart , Germany Tel. +49 711 8201-0, Fax +49 711 8201-720, [email protected], www.LTG-AG.com Previous editions are invalid. Subject to technical changes.

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DREactive

DREactive

Catalog excerpts

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