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  • New item   -7.39€Pitot tube connection kit for measuring air velocity | 250mm | for ducts Ø150-500mm | PVC tube 2m | Sentera Controls | PSET-PTL-200

    Pitot tube connection kit for measuring air velocity | 250mm | for ducts Ø150-500mm | PVC tube 2m | Sentera Controls | PSET-PTL-200

    Code: PSET-PTL-200
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  • Product description

    Pitot tube connection kit for measuring air velocity | 250mm | for ducts Ø150-500mm | PVC tube 2m | Sentera Controls | PSET-PTL-200

    The PSET-PTL-200 is a Sentera Controls Pitot tube kit for measuring air velocity in a duct together with a differential pressure transmitter or controller. The tube length is 250 mm, for ducts Ø150–500 mm; if the duct cross-section is known, air volume can also be measured and controlled.

    Key idea:
    The Pitot tube compares total and static pressure in the flow direction – their difference (dynamic pressure) depends on the air velocity. This makes it possible to know how much air actually flows through the duct without an expensive flow meter.
    Tube length
    250 mm
    Duct diameter
    Ø150–500 mm
    Tube
    PVC, Ø5 × 7 mm, 200 cm
    Measured
    Air velocity (m/s), air volume (m³/h)

    Operating principle

    The tube is inserted into the duct through a drilled hole and fixed with a flexible flange and screws; its tip is pointed against the flow. The "+D" (total pressure) and "−S" (static pressure) connections are connected with tubes to the "+" and "−" ports of the differential pressure transmitter or controller.

    The device calculates air velocity (m/s) from the dynamic pressure and, once the duct cross-section is entered, air volume (Q = A × V). For a rectangular duct the equivalent diameter de = 1.30 × (a × b)^0.625 / (a + b)^0.25 is used.

    Result – air velocity and airflow in the duct are measured without a separate flow meter. Engineer's note: do not install in a turbulence zone – away from filters, coolers, fans and bends; according to the installation diagram, the measuring point must be no closer than 7.5 duct diameters downstream of a disturbance and about 3 diameters before the next disturbance.

    Benefits PSET-PTL-200?
    Simple and inexpensive measurement of air velocity and air volume in a duct with a Sentera pressure transmitter or controller.

    Technical specifications

    Product type Pitot tube connection kit
    Manufacturer / code Sentera Controls / PSET-PTL-200
    Tube length 250 mm (259 mm overall)
    Tube diameter 12.5 mm
    Duct diameter Ø150–500 mm
    Tube material Flame-retardant ABS (POLYFLAM RABS), grey, PBDE-free
    Flange Flexible PE, black, 55.6 × 87 mm
    Tube 1 × clear PVC, Ø5 × 7 mm, 200 cm
    Mounting 2 galvanized screws 4.2 × 9.5 mm, plastic locking screw
    Max. operating pressure 10 000 Pa
    Max. operating temperature 60 °C
    Compatibility HPS, DPS, HPD, DPD pressure transmitters; HPSP, HPSA, DPSP, DPSA controllers
    Weight 0.126 kg (net)
    Compliance WEEE 2012/19/EU

    Manufacturer documentation

    ✔ Recommended by Elektrotechnikos sprendimai

    Original manufacturer documentation – technical data, wiring diagrams and installation instructions.

    Main functions

    • Air velocity measurement – m/s directly in the duct.
    • Air volume – with the duct cross-section known – m³/h without a flow meter.
    • Compatible with Sentera – HPS, DPS, HPD, DPD transmitters and HPSP, HPSA, DPSP, DPSA controllers.
    • Quick installation – a flexible flange and screws are included.
    • For rectangular ducts – the appropriate tube is chosen by the equivalent diameter de.

    Where is it used?

    • Ducts Ø150–500 mm
    • Supply airflow control and maintenance
    • VAV / CAV systems with HPSP / DPSP / HPSA / DPSA controllers
    • Commissioning and balancing of ventilation systems
    • Airflow measurement with HPS, DPS, HPD, DPD transmitters without a separate flow meter
    • Rectangular ducts, selected by equivalent diameter

    On-demand operation

    For commercial building HVAC designers.
    The 250 mm tube covers Ø150–500 mm main ducts, for which the shorter PSET-PTS-200 is not enough.
    For air handling unit start-up engineers.
    Together with an HPSP / DPSP controller, the fan maintains the set air volume based on the measured velocity and the entered cross-section.
    For rectangular duct installers.
    The appropriate tube is chosen according to the equivalent diameter – for example, for a 300 × 300 mm duct de = 328 mm.

    Practical application

    If air velocity has to be measured in a Ø400 mm main duct, then the PSET-PTL-200 is inserted with the tip facing the flow, the "+D" and "−S" connectors are connected to the transmitter or controller, and the air velocity and air volume Q = A × V are obtained.

    Application guide: how it is used in practice

    The PSET-PTL-200 is used in various systems – only the connected device and the measuring point change:

    Site What is connected Result Installer's note
    Supply duct with an EC fan Pitot tube → HPSP / DPSP controller (+D → +, −S → −) The fan maintains the set airflow Enter the duct cross-section in the controller
    Zone with a damper Pitot tube → HPSA / DPSA controller The damper maintains the set air velocity Choose the measuring point in a straight duct section
    Rectangular duct Equivalent diameter by formula The right kit and the right airflow E.g. a 300 × 300 mm duct corresponds to de = 328 mm

    How to choose a pressure connection kit

    Measurement task / duct Recommended model
    Pressure difference, airflow by K-factor – plastic nozzles PSET-PVC-200 (ABS nozzles, 2 m tube)
    Pressure difference, airflow by K-factor – aluminium nozzles PSET-QF-200 (aluminium nozzles, 2 m tube)
    Air velocity / air volume, duct Ø100–300 mm PSET-PTS-200 (Pitot tube 150 mm)
    Air velocity / air volume, duct Ø150–500 mm PSET-PTL-200 (Pitot tube 250 mm) ← this model
    Rule: for pressure difference (filter, duct static pressure) and airflow by fan K-factor – PSET-PVC-200 or PSET-QF-200; for air velocity and airflow by duct cross-section – Pitot tube: PSET-PTS-200 for Ø100–300 mm ducts, PSET-PTL-200 for Ø150–500 mm. For a rectangular duct calculate the equivalent diameter.
    When to choose another solution: a shorter tube for Ø100–300 mm ducts – PSET-PTS-200; for pressure difference and airflow by K-factor – PSET-PVC-200 or PSET-QF-200.

    Pros

    • Air velocity and air volume without a flow meter
    • Suitable for Sentera sensors and controllers
    • Flange, screws and tube included
    • Lightweight, flame-retardant ABS
    • Up to 10 000 Pa and 60 °C

    Cons / limitations

    • Only for Ø150–500 mm ducts
    • Sensitive to the installation location – a straight duct section is required
    • Operating temperature up to 60 °C

    Safety and installation notes

    • Before drilling the duct, make sure there are no cables or other services behind the wall.
    • Do not exceed an operating pressure of 10 000 Pa and a temperature of 60 °C.
    • Point the tube nozzle against the flow and secure it firmly with the flange.

    Quick selection guide

    250 mm
    Ø150–500 mm
    Air velocity
    PVC tube 2 m
    10 000 Pa
    Suitable when you need:
    • to measure air velocity in a duct;
    • to control airflow by duct cross-section;
    • to commission and balance ventilation systems.
    Check before use:
    • the duct diameter (Ø150–500 mm);
    • whether there is a straight section for the measuring location.
    • whether the device supports the air velocity mode.
    Important reminder: The PSET-PTL-200 measures nothing by itself – it is connected to a differential pressure transmitter or controller.

    FAQ

    Which ducts is it suitable for?
    For round ducts Ø150–500 mm; for rectangular ducts – by equivalent diameter.
    What devices is it used with?
    With HPS, DPS, HPD, DPD transmitters and HPSP, HPSA, DPSP, DPSA controllers.
    How do I get the air volume?
    With the duct cross-section entered: Q = A × V.
    Where should it be mounted?
    On a straight section, no closer than 7.5 duct diameters downstream of an obstruction.
    What is included?
    Tube, flexible PE flange 55.6 × 87 mm, 200 cm PVC tube, 2 galvanized screws 4.2 × 9.5 mm and a plastic locking screw.
    What is the tube made of?
    Made of flame-retardant ABS (POLYFLAM RABS) free of PBDE.

    Pitot tube connection kit for measuring air velocity | 250mm | for ducts Ø150-500mm | PVC tube 2m | Sentera Controls | PSET-PTL-200

    Sentera PSET-PTL-200 – 250 mm Pitot tube kit for Ø150–500 mm ducts, for measuring air velocity and airflow with Sentera pressure transmitters and controllers.

    Illustrative image may have been created using AI. The appearance of the product may differ slightly from the image shown. Please refer to the technical specification.

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