DPK6 Duct Probe Unit

The DPK6 duct probe units Smoke detectors are not normally mounted directly inside ducts because the airflow only allows the detector to sample air from a small section of the duct and such detectors would rapidly become dirty. Instead, ducting is protected by the use of probe units which gather air from a cross section of the duct and pass it through a smoke detector head.

For most applications, smoke or combustion products are likely to have travelled some distance ageing the smoke prior to reaching the probe unit. It is therefore normally recommended that an optical smoke detector be fitted, and this is often a requirement of Building regulations. The DPK6 duct probe units use Generation6 850PH and 830PH Multi Sensor Smoke Detectors.

DPK6 Duct Probe Units have been developed to detect smoke in ventilation ducts. They offer significant benefits in terms of performance and installation. The system comprises only one single duct probe tube which improves efficiency and reduces installation time.
  

The DPK6 duct smoke detector housing is designed to comply with the stringent demands new European standard prEN 54-27. The system fulfils all the requirements for safe fire detection with airflow speeds from 0,5 m/s to 20 m/s.

Features:

• DPK6 for use with Generation6 multi-sensor detectors 850PH and 830PH with built-in 4B-C 4” Continuity Base
• Designed to comply with prEN 54-27
• One-pipe air sampling system
• Patented venturi pipe and duct housing
• Test hole on cover
• Simple installation
• Simple service and maintenance
   

DPK4 and DPK4I Duct Probe Units

The DPK4/DPK4I duct probe units have been developed to detect smoke in ventilation ducts and combine a smoke detector and an adapter system where both duct probe tube and housing are specially designed for optimum airflow through the smoke detector. The system detects smoke in incoming air, outgoing air and circulation air ducts of ventilation and conditioning systems. The duct probes are especially recommended for installations in air ducts with an air flow of 1 m/s until 20 m/s.

Particular features of the DPK4 and DPK4I

• With Built-in MX/ZX-Detector base
• DPK4 - with built-in MX/ZX detector base 5” – 5B
• DPK4I - with built-in MX/ZX detector base 5” – 5BI
• Is suitable for addressable and conventional systems
• Suitable for air speeds 1 m/s until 20 m/s
• Can be used in combination with e.g.  801Ph , 813P, 601P or 601PH
• One-pipe air sampling system
• Range of aluminium probe tube available for air ducts up to 2700 mm
• Transparent lid allows detector to be seen
• Test hole on cover
• Sensitive flow indicator
• Simple service and maintenance
• Installer-friendly connection of cables
• Easy installation of duct probe tubes

For an easy and fast installation of the DPK4 an MX/ZX-Detector base is already built-in. The built-in detector base reduces the assembly time. According to customer requirements you can choose from two variants; the DPK4 – Duct Probe with built-in MX/ZX detector base 5” – 5B or the DPK4I – Duct Probe with built-in MX/ZX detector base 5” with isolator – 5BI. 

With the easily accessible terminals on the back side of the duct probe units a fast and uncomplicated installation is guaranteed.

Another big advantage offers the one-pipe air sampling system. Unlike the MP69 the new duct probe units use only one pipe for diverting the air though the detector and back. The need of only one pipe per tube saves time during installation and so reduces installation costs.

A red plastic bar is fixed inside the housing of the DPK4. The bar provides a simple confirmation that there is no leakage and that the air flow from the air duct is in fact passing through the housing and the detection of the air duct takes place. The bar is blown up by the passing air.

Another advantage offers the test hole on the cover. Herewith the function of the detector can easily be proofed by blowing-in the test gas.
 

Accessories

To adapt the duct probe perfectly to customer requirements and to offer a well-priced product we offer 3 lengths of the duct probe tubes. The tube is made of aluminium and can easily be shortened to suit the diameter of the air duct.

For mounting the DPK4 on isolated or circular air ducts please use the DPKM – Mounting bracket.

• DPK600 - Duct Probe Tube 600 mm
• DPK1500 - Duct Probe Tube 1500 mm
• DPK2800 - Duct Probe Tube 2800 mm
• DPKM - Duct Probe Mounting bracket

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