halton vita lab solutions dampers and measuring units · halton vita lab solutions dampers and...

Enabling Wellbeing

Halton Vita Lab Solutions Dampers and Measuring Units

Dampers and Measuring Units v2.2 en 2

Contents 1 Introduction .......................................................................................................................................... 5

2 Halton VVP - Plastic measuring unit for Halton Vita Lab ..................................................................... 6

2.1 Overview ....................................................................................................................................... 6

2.2 Materials ........................................................................................................................................ 7

2.3 Dimensions ................................................................................................................................... 7

2.4 Airflow ranges per size .................................................................................................................. 8

2.5 Function ........................................................................................................................................ 8

2.6 Installation ..................................................................................................................................... 9

2.7 Commissioning .............................................................................................................................. 9

2.8 Specification ................................................................................................................................ 10

3 Halton VVI - Stainless steel measuring unit for Halton Vita Lab ........................................................ 11

3.1 Overview ..................................................................................................................................... 11

3.2 Materials ...................................................................................................................................... 12

3.3 Dimensions ................................................................................................................................. 12

3.4 Airflow ranges per size ................................................................................................................ 12

3.5 Function ...................................................................................................................................... 13

3.6 Installation ................................................................................................................................... 13

3.7 Commissioning ............................................................................................................................ 13

3.8 Specification ................................................................................................................................ 14

4 Halton VVH - Galvanised steel measuring unit for Halton Vita Lab ................................................... 15

4.1 Overview ..................................................................................................................................... 15

4.2 Materials ...................................................................................................................................... 16

4.3 Dimensions ................................................................................................................................. 16


4.5 Function ...................................................................................................................................... 17

4.6 Installation ................................................................................................................................... 17

4.7 Commissioning ............................................................................................................................ 17

4.8 Specification ................................................................................................................................ 18

5 Halton VFP - Plastic damper for Halton Vita Lab ............................................................................... 19

5.1 Overview ..................................................................................................................................... 19


5.2 Materials ...................................................................................................................................... 20

5.3 Dimensions ................................................................................................................................. 20


5.5 Function ...................................................................................................................................... 22

5.6 Installation ................................................................................................................................... 23

5.7 Commissioning ............................................................................................................................ 23

5.8 Specification ................................................................................................................................ 24

6 Halton VFI - Stainless steel damper for Halton Vita Lab ................................................................... 25

6.1 Overview ..................................................................................................................................... 25

6.2 Materials ...................................................................................................................................... 26

6.3 Dimensions ................................................................................................................................. 26


6.5 Function ...................................................................................................................................... 27

6.6 Installation ................................................................................................................................... 27

6.7 Commissioning ............................................................................................................................ 27

6.8 Specification ................................................................................................................................ 28

7 Halton VFH - Galvanised steel damper for Halton Vita Lab .............................................................. 29

7.1 Overview ..................................................................................................................................... 29

7.2 Materials ...................................................................................................................................... 30

7.3 Dimensions ................................................................................................................................. 31


7.5 Function ...................................................................................................................................... 32

7.6 Installation ................................................................................................................................... 33

7.7 Commissioning ............................................................................................................................ 33

7.8 Specification ................................................................................................................................ 34

8 Halton VLX - Rectangular galvanised steel damper for Halton Vita Lab ........................................... 35

8.1 Overview ..................................................................................................................................... 35

8.2 Materials ...................................................................................................................................... 36

8.3 Dimensions ................................................................................................................................. 37



8.5 Function ...................................................................................................................................... 38

8.6 Installation ................................................................................................................................... 39

8.7 Commissioning ............................................................................................................................ 40

8.8 Specification ................................................................................................................................ 40

9 Halton VKR - Halton Vita Lab damper for rectangular ducts ............................................................. 42

9.1 Overview ..................................................................................................................................... 42

9.2 Materials ...................................................................................................................................... 43

9.3 Dimensions ................................................................................................................................. 43


9.5 Function ...................................................................................................................................... 44

9.6 Installation ................................................................................................................................... 44

9.7 Commissioning ............................................................................................................................ 46

9.8 Specification ................................................................................................................................ 46


1 Introduction

Halton provides a wide range of high-quality dampers and measuring units for Halton Vita Lab solutions in order to match various design requirements.

The Halton Vita Lab dampers and measuring units are available in PVC/PPS, galvanised steel and stainless steel. All dampers and measuring units come with an integrated control box containing a differential pressure sensor for airflow measurement. As an option, a transformer for power supply and a light relay for controlling the fume cupboard light can be included in the control box, all prewired at the factory. The control box can also be delivered separately from the unit.

In spaces with centralised exhaust design, the exhaust unit consists of a damper and an actuator. In spaces with a single exhaust fan design, a measuring unit is used instead (requires a frequency inverter, not provided by Halton).

The following table shows which Halton Vita Lab solutions the dampers and measuring units are compatible with:

Table. Halton Vita Lab solutions - dampers and measuring units

The Halton Vita Lab Design Guides available from Halton Sales provide you with more information about selecting the right configuration and damper/measuring unit for your Halton Vita Lab solution. However, as all designs vary, close cooperation with Halton is recommended in order to ensure the best results.


2 Halton VVP - Plastic measuring unit for Halton Vita Lab

2.1 Overview

Halton VVP is a plastic fume cupboard measuring unit for Halton Vita Lab Solo systems:

For single exhaust fan ventilation design applications (controls a single fume cupboard exhaust fan)

For exhaust installations

Delivered with an integrated control box containing a differential pressure sensor for airflow measurement and a Halton VLC fume cupboard controller

Can also be delivered without the Halton VLC controller for special applications

Optional components, delivered prewired in the control box: transformer, light relay

Product models and options

Available sizes: 125, 160, 200, 250, 315, 400, 500

Casing material choice PVC or PPS

Available with or without flanges for connection

Other product characteristics

Circular inlet, circular outlet

Operating range with ambient temperature of 0-50 °C

Ambient relative humidity <95%, non-condensing

Airflow measurement with measurement probe

The Halton Vita Lab Solo Design Guide available from Halton Sales provides you with more information about selecting the right configuration and exhaust unit for your Halton Vita Lab solution.


However, as all designs vary, close cooperation with Halton is recommended in order to ensure the best results.

2.2 Materials

2.3 Dimensions

The dimensions for the different measuring unit sizes are detailed in the following figures and table. For the explanation of keys A-D in the table, see the corresponding keys in the drawings.

Fig. Halton VVP without flange

Fig. Halton VVP with flange


2.4 Airflow ranges per size

Minimum and maximum airflow ranges for the different sizes in l/s and m³/h for Halton VVP (max is based on measuring unit velocity of 8 m/s):

For more information about airflow requirements for laboratory fume cupboards, see the Appendix in the Halton Vita Lab Solo Design guide.

2.5 Function

The Halton Vita Lab Solo measuring units maintain the required airflow in the fume cupboard, regardless of variation in the conditions, through accurate measurement and airflow control.

The measuring unit is controlled by the Halton VLC fume cupboard controller (premounted on the unit). The VLC retrieves the measured sensor values of the Halton Vita Lab Solo system and compares them with the assigned setpoint. The differential pressure sensor integrated in the measuring unit measures the pressure in the exhaust unit with a measurement probe and calculates the airflow rate. An exhaust fan and a frequency inverter (not provided by Halton) control the exhaust airflow rate.

Based on the calculations, the VLC then adapts the damper position or frequency using a PID control in order to maintain a constant face velocity. If the airflow does not reach the predefined setpoint, an audio-visual alarm is triggered. For more information about the operation of the measuring unit as part of the Halton Vita Lab Solo systems, see the Halton Vita Lab Solo Design Guide available from Halton Sales.


2.6 Installation

The exhaust unit can be installed horizontally, vertically or in any other position without impact on the measurement performance.

The required safety distances must be taken into account when installing the exhaust unit. Install the unit into the ductwork so the airflow direction through the unit is as indicated:

Installation instructions and project-specific wiring diagrams are provided by Halton for all Halton Vita Lab Solo system configurations. For more information, see the Halton Vita Lab Solo Design Guide available from Halton Sales.

2.7 Commissioning

The actual airflow can be calculated as a function of the differential pressure at the measurement probe and the measurement probe k factor as follows:

𝑄𝑣 = 𝑘𝑥√∆𝑃𝑚

Where

Qv = actual airflow rate

k = k-value of the product (see table below)

Pm = differential pressure of the measurement probe (Pa)

K-factors in l/s and m³/h for the different sizes of Halton VVP:


2.8 Specification

Exhaust unit for Halton Vita Lab Solo applications.

A plastic measuring unit used for measuring the exhaust airflow of a single fume cupboard exhaust fan, allowing the control of the frequency inverter of the fan.

Made of PVC or PPS.

Equipped with a differential pressure sensor with auto-zero calibration and a digital display, and an airflow controller.

Short damper construction (<500mm).

Installation possible in any position without impact on the measurement performance.

Integration to fast systems possible due to the differential pressure sensor's standard time constant of 0.5s.


3 Halton VVI - Stainless steel measuring unit for Halton Vita Lab

3.1 Overview

Halton VVI is a stainless steel fume cupboard measuring unit for Halton Vita Lab Solo systems:





Available sizes: 100, 125, 160, 200, 250, 315, 400, 500



Corrosion-proof stainless steel

Casing tightness fulfils class C (EN 1751)

Inlet and outlet spigots with integral rubber gaskets







3.2 Materials

3.3 Dimensions


Minimum and maximum airflow ranges for the different sizes in l/s and m³/h (max is based on measuring unit velocity of 8 m/s):



3.5 Function

See section 2.5

3.6 Installation

See section 2.6

3.7 Commissioning



Where




K-factors in l/s and m³/h for the different sizes of Halton VVI:


3.8 Specification

Exhaust unit for Halton Vita Lab Solo applications:

Measuring unit used for measuring the exhaust airflow of a single fume cupboard exhaust fan , allowing the control of the frequency inverter of the fan.

Made of 316L stainless steel with measurement probe pipes made of aluminium.

Equipped with integral gaskets and a differential pressure sensor with auto-zero calibration and a digital display.





4 Halton VVH - Galvanised steel measuring unit for Halton Vita Lab

4.1 Overview

Halton VVH is a galvanised steel fume cupboard measuring unit for Halton Vita Lab Solo systems:





Available Sizes: 100, 125, 160, 200, 250, 315, 400 and 500



Corrosion-proof galvanised steel

Casing tightness fulfils class C (EN 1751)

Inlet and outlet spigots with integral rubber gaskets







4.2 Materials

4.3 Dimensions


Minimum and maximum airflow ranges for the different sizes in l/s and m³/h (max is based on measuring unit velocity of 8 m/s):



4.5 Function

See section 2.5

4.6 Installation

See section 2.6

4.7 Commissioning



Where




K-factors in l/s and m³/h for the different sizes of Halton VVH:


4.8 Specification


Measuring unit used for measuring the exhaust airflow of a single fume cupboard exhaust fan, allowing the control of the frequency inverter of the fan.

Measuring unit made of galvanised steel with measurement probe pipes made of aluminium.

Equipped with integral gaskets and a differential pressure sensor with auto-zero calibration and a digital display.





5 Halton VFP - Plastic damper for Halton Vita Lab

5.1 Overview

Halton VFP is a plastic fume cupboard damper for Halton Vita Lab Solo systems:

For general exhaust ventilation design applications (fume cupboard exhausts are connected to one common fan)


Delivered with an integrated control box containing a differential pressure sensor for airflow measurement, a Halton VLC fume cupboard controller and a fast actuator


Halton VFP-Y o Airflow measurement with measurement probe o Available with or without flanges for connection o Sizes: 125, 160, 200, 250, 315, 400, 500 o Casing material choice PVC or PPS

Halton VFP-V o Airflow measurement with venturi principle o Equipped with flange for connection o Sizes 160, 200, 250, 315 available in PVC or PPS o Sizes 125, 400 and 500 available in PPS only



Pressure independent operation




Maximum differential pressure over the damper of 500 Pa

The Halton Vita Lab Solo Design Guide available from Halton Sales provides you with more information about selecting the right configuration and exhaust unit for your Halton Vita Lab solution. However, as all designs vary, close cooperation with Halton is recommended in order to ensure the best results.

5.2 Materials

5.3 Dimensions

The dimensions for the damper sizes are detailed in the following figures and tables. For the explanation of keys (A-L) in the tables, see the corresponding keys in the drawings.

Fig. Halton VFP-Y with flange

PART MATERIAL

Casing PVC or PPS

Damper blade PVC or PPS

Measurement probes PVC

Tube Connectors Polyacetal

Flexible tubes Silicone

Control Box Galvanized steel (Control option : CB = CB1)


Fig. Halton VFP-Y without flange

Table. Dimensions for Halton VFP-Y

Table. Dimensions for Halton VFP-V



Minimum and maximum airflow ranges for the different sizes for VFP-Y and VFP-V respectively in l/s and m³/h (max is based on damper velocity of 8 m/s):

Table. Airflow ranges for Halton VFP-Y

Table. Airflow ranges for Halton VFP-V


5.5 Function

Halton VFP maintains the required airflow in the fume cupboard through accurate measurement and airflow control, regardless of the variation in the conditions.


The damper is controlled by the Halton VLC controller (premounted on the unit in the control box). The VLC retrieves the measured sensor values of the Halton Vita Lab system and compares them with the assigned setpoint. The differential pressure sensor integrated in the damper measures the pressure with a measurement probe/venturi principle, and then calculates the airflow rate.

Based on the calculations, the VLC then adapts the damper position or frequency using a PID control in order to maintain a constant face velocity. If the airflow does not reach the predefined setpoint, an audio-visual alarm is triggered. For more information about the operation of the damper as part of the Halton Vita Lab systems, see the Halton Vita Lab Solo Design Guide available from Halton Sales.

5.6 Installation

See section 2.6

5.7 Commissioning



Where




K-factors in l/s and m³/h for the different sizes of VFP-Y and VFP-V respectively:

Table. K -factor for Halton VFP-Y

Table. K -factor for Halton VFP-V


5.8 Specification


Variable airflow control damper used for measuring and controlling the exhaust airflow of fume cupboards connected to a common exhaust fan.

Made of PVC or PPS.

Pressure-independent damper equipped with

a differential pressure sensor with auto-zero calibration and a digital display for airflow measurement

an airflow controller

a damper actuator using the LMS technology (Load Moment Stop) for extending product lifetime

Available with or without flanges for connection.



Integration to fast systems possible due to:

the differential pressure sensor's standard time constant of 0.5s

the actuator's reaction time of 1.5s (damper sizes of up to 250mm)


6 Halton VFI - Stainless steel damper for Halton Vita Lab

6.1 Overview

Halton VFI is a stainless steel fume cupboard damper for Halton Vita Lab Solo systems:

For general exhaust ventilation design applications (fume cupboard exhausts are connected to one common fan)


Delivered with an integrated control box containing a differential pressure sensor for airflow measurement, a Halton VLC controller and a fast actuator


Available sizes : 100, 125, 160, 200, 250, 315, 400 and 500



Casing made of 316L corrosion-proof stainless steel

Casing tightness complies with EN 1751, class C

Complete shut-off function

Pressure-independent operation





The Halton Vita Lab Solo Design Guide available from Halton Sales provides you with more information about selecting the right configuration and exhaust unit for your Halton Vita Lab solution. However, as all designs vary, close cooperation with Halton is recommended in order to ensure the best results.

6.2 Materials

6.3 Dimensions


Minimum and maximum airflow ranges for the different sizes for Halton VFI in l/s and m³/h (max is based on damper velocity of 8 m/s):



6.5 Function

The damper maintains the required airflow in the fume cupboard through accurate measurement and airflow control, regardless of the variation in the conditions.

The damper is controlled by the Halton VLC controller (premounted on the unit in the control box). The VLC retrieves the measured sensor values of the Halton Vita Lab system and compares them with the assigned setpoint. The differential pressure sensor integrated in the damper measures the pressure with a measurement probe and calculates the airflow rate.

Based on the calculations, the VLC then adapts the damper position or frequency using a PID control in order to maintain a constant face velocity. If the airflow does not reach the predefined setpoint, an audio-visual alarm is triggered. For more information about the operation of the damper as part of the Halton Vita Lab systems, see the Halton Vita Lab Solo Design Guide available from Halton Sales.

6.6 Installation

See section 2.6

6.7 Commissioning



Where





K-factors in l/s and m³/h for the different sizes of Halton VFI:

6.8 Specification


Variable airflow control damper used for measuring and controlling the exhaust airflow of fume cupboards connected to a common exhaust fan.

Damper made of 316L stainless steel with measurement probe pipes made of aluminium.


integral airtight rubber gaskets for duct connection




Compliance with standards:

Tightness of the control damper in closed position (EN1751 class 4)

Casing tightness (EN 1751 class C).







7 Halton VFH - Galvanised steel damper for Halton Vita Lab

7.1 Overview

Halton VFH is a galvanised steel damper for all Halton Vita Lab solutions:

In Halton Vita Lab Solo: o For exhaust installations, to control the fume cupboard exhaust airflow o For general exhaust ventilation design applications (fume cupboard exhausts are

connected to one common fan)

In Halton Vita Lab Room: o For supply and exhaust installations, to control room supply airflow or room supply

exhaust o External insulation available (VFH/I)

In Halton Vita Lab Zone: o For exhaust installation, to control the zone exhaust pressure o The addition of a static pressure measuring unit (MSS) is recommended for

measuring the static pressure o External insulation available (VFH/I)



VFH/G without insulation

VFH/I with insulation (50mm)

Electrical reheater available as special accessory




Corrosion-proof, galvanised steel


Complete shut-off function (blade gasket), complies with EN 1751 class 4

Casing tightness complies with EN 1751 class C


Operating range : ambient temperature of 0 to 50 °C


The Halton Vita Lab Solo and Halton Vita Lab Room Design Guides available from Halton Sales provide you with more information about selecting the right configuration and damper for your Halton Vita Lab solution. However, as all designs vary, close cooperation with Halton is recommended in order to ensure the best results.

7.2 Materials


7.3 Dimensions

Fig & table. Dimensions for Halton VFH/G:


Fig & table. Dimensions for Halton VFH/I:


Minimum and maximum airflow ranges for the different sizes for Halton VFH in l/s and m³/h (max is based on damper velocity of 8 m/s):

7.5 Function

Depending on the application, the damper maintains the required airflow in the fume cupboard, the room and/or the duct. A stable airflow is achieved through accurate measurement and airflow control, regardless of the variation in the conditions.


Based on the calculations, the VLC then adapts the damper position or frequency using a PID control in order to maintain a constant face velocity. If the airflow does not reach the predefined setpoint, an audio-visual alarm is triggered. For more information about the operation of the damper as part of the Halton Vita Lab systems, see the Halton Vita Lab Solo Design Guide and the Halton Vita Lab Room Design Guide available from Halton Sales.


7.6 Installation

The damper can be installed horizontally, vertically or in any other position without impact on the measurement performance

The required safety distances must be taken into account when installing the damper. Install the unit into the ductwork so the airflow direction through the unit is as indicated:

Static pressure measurement

When using the damper in Halton Vita Lab Zone applications, the addition of a static pressure measuring unit (MSS) is recommended for increasing the accuracy of static pressure measurement.

In order to ensure the accuracy of the duct static pressure measurement, consider the safety distances between the measuring unit and airflow disturbances as follows:

Fig. Bend Fig. A branch on a supply duct

Fig. A branch on an exhaust duct Fig. Safety distance between damper & MSS

Installation instructions and project-specific wiring diagrams are provided by Halton for all Halton Vita Lab system configurations. For more information, see the relevant Halton Vita Lab Solo and Halton Vita Lab Room Design Guides available from Halton Sales.

7.7 Commissioning




Where




K-factors in l/s and m³/h for the different sizes of Halton VFH:

7.8 Specification

Damper for supply and/or exhaust installations in Halton Vita Lab Solo, Vita Lab Room and Vita Lab Zone applications:

Variable airflow control damper used for measuring and controlling the exhaust airflow of fume cupboards connected to a common exhaust fan or for controlling the airflow and pressure of the laboratory space or zone.

Damper made of galvanised steel with measurement probe pipes made of aluminium.


integral airtight rubber gaskets for duct connection




external insulation made of mineral wool as an option for air-radiated noise reduction



Casing tightness (EN 1751 class C).







8 Halton VLX - Rectangular galvanised steel damper for Halton Vita Lab

8.1 Overview

Halton VLX is a rectangular galvanised steel damper for Halton Vita Lab Room and Halton Vita Lab Zone applications with special requirements on noise reduction:

Halton Vita Lab Room o For supply and exhaust installations, for controlling room supply or exhaust airflow

Halton Vita Lab Zone o For exhaust installations, to control the zone exhaust pressure o The addition of a static pressure measuring unit (MSS) is recommended for

measuring the static pressure



Short (VLX/S) and long (VLX/L) versions

Separate supply and exhaust models


Two options for insulation thickness (25mm and 40mm)

Electrical or hot water reheating unit available

Circular inlet, rectangular outlet (standard model)

Outlet plenum with one or more circular connections available

See table for codes of the different product models and options:



Airflow management plenum with acoustic attenuation (high density mineral wool)







8.2 Materials


8.3 Dimensions

The dimensions for the different measuring unit sizes are detailed in the following figures and table. For the explanation of keys (D-Y) in the table, see the corresponding keys in the drawings

Fig. VLX Dimensions

Table. Dimensions for long version


Table. Dimensions for short version


Minimum and maximum airflow ranges for the different sizes for Halton VLX in l/s and m³/h (max is based on damper velocity of 8 m/s):

8.5 Function

Depending on the application, the damper maintains the required airflow in the fume cupboard, the room and/or the duct. A stable airflow is achieved through accurate measurement and airflow control, regardless of the variation in the conditions.



Based on the calculations, the VLC then adapts the damper position or frequency using a PID control in order to maintain a constant face velocity. If the airflow does not reach the predefined setpoint, an audio-visual alarm is triggered. The damper is also equipped with an actuator, made of two blades with a kinematic link. When the main blade moves, the second, perforated blade moves in a different direction. This reduces airborne noise when the air enters the unit. The main blade is equipped with a gasket to reduce the friction and the needed torque of the actuator. The electric power consumption of the control loop is also reduced.

For more information about the operation of the damper as part of the Halton Vita Lab systems, see the Halton Vita Lab Solo Design Guide and the Halton Vita Lab Room Design Guide available from Halton Sales.

8.6 Installation

The damper must be installed horizontally and the required safety distances must be taken into account when installing the damper.

Install the unit into the ductwork so the airflow direction through the unit is as indicated:


When using the damper in Halton Vita Lab Zone applications, the addition of a static pressure measuring unit (MSS) is recommended for increasing the accuracy of static pressure measurement.






8.7 Commissioning



Where




8.8 Specification

Damper for Halton Vita Lab Room and Vita Lab Zone applications.

Variable airflow control damper used for measuring and controlling the airflow of the laboratory space in supply or exhaust applications, or for controlling zonal pressure.

Damper made of galvanised steel with measurement probe pipes made of aluminium. Casing made of galvanised steel.




LMS technology (Load Moment Stop) for extending product lifetime

Construction made with special attention to noise reduction.

In the standard model, casing insulated with a 25 mm thick mineral wool. Mineral wool insulation has a high-density coating to avoid tearing, even at high velocities.


An option for extra thick mineral wool insulation (40mm). This construction can replace the double skin construction.

Damper actuator equipped with a kinematic link between blades for noise reduction. When the main blade moves, the second, perforated blade moves in a different direction. This reduces airborne noise when the air enters the unit. The main blade is equipped with a gasket to reduce the friction and the needed torque of the actuator. The electric power consumption of the control loop is also reduced.

Acoustic part equipped with an asymmetrical silencer enabling additional acoustic attenuation, particularly in the low frequency-range.

An option for a rectangular part, allowing air expansion

Compliance with standards: fire performance of the insulation Euro class A2, s1, d0

Suitable for laboratory environments: a smooth and washable surface to prevent microbial growth




The calibration parameters and the location of the damper are clearly labelled at the factory prior to delivery.


9 Halton VKR - Halton Vita Lab damper for rectangular ducts

9.1 Overview

Halton VKR is a rectangular galvanised steel damper for Halton Vita Lab Room and Halton Vita Lab Zone solutions:

Halton Vita Lab Room o For supply and exhaust installations, for controlling room supply or exhaust airflow

Halton Vita Lab Zone o For exhaust installations, to control zonal exhaust pressure o The addition of a static pressure measuring unit (MSS) is recommended for

measuring the static pressure



Separate supply (VKR/S) and exhaust (VKR/E) models

Available with 25mm insulation or without insulation

Sizes : from 200mm x150mm to 800mm x 400mm (width options at 100mm and height at 50mm intervals)


Rectangular inlet, rectangular outlet




Shut-off operation complies with EN 1751, class 1

Casing tightness complies with EN 1751, class B





9.2 Materials

9.3 Dimensions

W= Width 200-800mm, at 100mm intervals H= Height 150-400mm, at 50mm intervals


Minimum and maximum airflow ranges for the different sizes for Halton VKR in l/s and m³/h (max is based on damper velocity of 8 m/s):


Table. Airflow range when the minimum airflow is 1m/s

Table. Airflow range when minimum airflow is 8m/s

9.5 Function

See 7.5

9.6 Installation

The damper can be installed horizontally, vertically or in any other position without impact on the measurement performance.

The required safety distances must be taken into account when installing the damper. Install the unit into the ductwork so the airflow direction through the unit is as indicated:


In order to estimate the safety distance to be respected, the equivalent to the hydraulic diameter is calculated using the formula below

deq =2 ×W× H

W+ H

Where

deq = equivalent distance in mm

W = width in mm

H = height in mm


When using the damper in Halton Vita Lab Zone applications, the addition of a static pressure measuring unit is recommended for increasing the accuracy of static pressure measurement.






9.7 Commissioning



Where

Qv = actual airflow rate (l/s)

k = k-value of the product, with k = W(mm) x H(mm) x 0,001054


9.8 Specification

Damper for supply and/or exhaust installations in Halton Vita Lab Room and Vita Lab Zone applications.

Variable airflow control damper used for measuring and controlling the exhaust airflow of fume cupboards connected to a common exhaust fan or for controlling the airflow and pressure of the laboratory space or zone.

Damper made of galvanised steel with measurement probe pipes made of aluminium.





external insulation made of mineral wool as an option for air-radiated noise reduction



Casing tightness (EN 1751 class B)

halton vita lab solutions dampers and measuring units · halton vita lab solutions dampers and...

Documents