TVLK

Easy cleaning of sensor tubes

Variant with nozzle and connecting circular spigot

Variant with bluff body and flange

For all upstream conditions

Conforms to VDI 6022

Optimised for use in laboratories and on fume cupboards

Plastic circular VAV terminal units for aggressive extract air in laboratories and production facilities
■ Casing and damper blade made of flame-resistant polypropylene
■ Compact construction, only 400 mm long
■ High control accuracy even in case of unfavourable upstream conditions
■ Combination with fast-running actuators (air management systems)
■ Volume flow rate measurement with bluff body or nozzle
■ Slide-out sensor tubes allow for easy cleaning
■ Closed blade air leakage to EN 1751, class 4
■ Casing air leakage to EN 1751, class C

Optional equipment and accessories
■ With flanges on both ends
■ Plastic secondary silencer Type CAK for the reduction of air-regenerated noise

General information

Application

Circular VAV terminal units for use in ventilation and air conditioning systems
Terminal unit made of plastic for controlling the volume flow rate of fume cupboards and fume hoods in labs
Suitable for contaminated air
Closed-loop volume flow control using an external power supply
For variable and constant volume flows
Shut-off by means of switching (equipment supplied by others)

Special characteristics

High control accuracy even in case of unfavourable upstream conditions
Integral effective pressure sensor with 3 mm measuring holes (resistant to dust and pollution)
Construction with bluff body: Slide-out sensor tubes allow for easy inspection and cleaning
No metal parts come into contact with the airflow
Factory set-up or programming and aerodynamic function testing
Configuration and subsequent parameter setting for the control component can be done with the EasyConnect configuration software

Nominal sizes

Bluff body: 250 – 100, 250 – 160
Nozzle: 250 – D08, 250 – D10, 250 – D16
Bluff body available in 2 sizes and nozzle available in 3 sizes for various volume flow rate ranges

Variants

TVLK: VAV terminal unit
TVLK-FL: VAV terminal unit with flanges on both ends

Parts and characteristics

Ready-to-commission unit which consists of mechanical parts and control components (attachments)
Averaging effective pressure sensor for volume flow rate measurement,the construction with bluff body has a slideout sensor that can be removed for cleaning
Damper blade
Factory assembled control components (attachments) complete with wiring and tubing
Aerodynamic functional testing on a special test rig before shipping of each unit
Set-up data is given on a label affixed to the unit

Attachments

LABCONTROL: Control components (attachments) for air management systems

Accessories

Matching flanges for both ends, including seals

Useful additions

Plastic secondary silencer Type CAK for demanding acoustic requirements

Construction features

Circular casing
Short casing: 392 mm without flange, 400 mm with flange
Spigot suitable for ducts according to DIN 8077
Both spigots with the same diameter (250 mm)
Position of the damper blade indicated externally at shaft extension

Material and surfaces

Casing and damper blade made of flame-resistant polypropylene (PP), flammability to UL 94, V-0
Effective pressure sensor (bluff body or Venturi nozzle) and plain bearings made of polypropylene (PP)
Damper blade seal made of thermoplastic elastomers (TPE)

Standards and guidelines

Fulfils the hygiene requirements of

EN 16798, Part 3
VDI 6022, Sheet 1
DIN 1946, Part 4
For other applicable standards and guidelines refer to the hygiene certificate

Casing leakage

EN 1751, Class C

Closed blade air leakage

EN 1751, class 4
Meets the increased requirements of DIN 1946, Part 4, with regard to the acceptable closed blade air leakage

Maintenance

Maintenance-free as construction and materials are not subject to wear
We recommend zero point correction once a year; alternatively you can use the EASYLAB control component with the EM-AUTOZERO expansion module for automatic zero point correction

Information technique

Schematic illustration of the TVLK Funktion-TVLK

① Nozzle (optional)
② EASYLAB control component
③ Casing
④ Actuator
⑤ Bluff body and sensor tubes

The VAV terminal unit is fitted with an effective pressure sensor with a bluff body or a nozzle for measuring the volume flow rate.

The control components (attachments) include an effective pressure transducer that transforms the effective pressure into an electric signal, a controller, and an actuator. The controller compares the actual value with the setpoint value and alters the control signal of the actuator if there is a difference between the two values.

Setpoint value default setting

Fume cupboard control

The volume flow rate setpoint depends on the control strategy for the fume cupboard:

Face velocity
Sash distance
Combination of face velocity and sash distance
Using switch contacts (2-point, 3-point)
Constant value

Volume flow control

The volume flow rate setpoint is specified by an external setpoint value setting

This specification text describes the general properties of the product. Texts for variants can be generated with our Easy Product Finder design program.

Specification text

Circular VAV terminal units made of flame-resistant plastic, for variable air volume systems and fume cupboards. Suitable for the control of extract air containing hazardous particles, as all components coming into contact with the airflow are made of plastic (no interior metal parts). Ready-to-commission unit which consists of the mechanical parts and the electronic control

components (attachments). Each unit contains an averaging effective pressure sensor with bluff body or a nozzle for volume flow rate measurement, and a damper blade. Factory assembled control components (attachments) complete with wiring and tubing. Effective pressure sensor with 3 mm measuring holes, hence resistant to contamination. Position of the damper blade indicated externally at shaft extension. The damper blade is factory set to open position, which allows a ventilation airflow even without control. Meets the hygiene requirements of EN 16798, Part 3, of VDI 6022, Sheet 1, and of DIN 1946, Part 4.

Special features

High control accuracy even in case of unfavourable upstream conditions
Integral effective pressure sensor with 3 mm measuring holes (resistant to dust and pollution)
Construction with bluff body: Slide-out sensor tubes allow for easy inspection and cleaning
No metal parts come into contact with the airflow
Factory set-up or programming and aerodynamic function testing
Configuration and subsequent parameter setting for the control component can be done with the EasyConnect configuration software

Materials and surfaces

Casing and damper blade made of flame-resistant polypropylene (PP), flammability to UL 94, V-0
Effective pressure sensor (bluff body or Venturi nozzle) and plain bearings made of polypropylene (PP)
Damper blade seal made of thermoplastic elastomers (TPE)

Technical data

Nominal sizes: 250 mm
Volume flow rate range: 30 – 546 l/s or 108 – 1967 m³/h
Volume flow rate control range: approx. 15 – 100 % of the nominal volume flow rate
Minimum differential pressure: Up to 139 Pa (without circular silencer)
Maximum differential pressure: 1000 Pa
Closed blade air leakage to EN 1751, class 4
Casing air leakage to EN 1751, class C

Specification text attachment

Variable volume flow control with an electronic EASYLAB controller for fume cupboards

Supply voltage 24 V AC/DC
Fast and stable control
Static effective pressure measurement
Fast-running actuator
Easy commissioning due to plug and play communication system
Controller is a modular system and can be expanded
Volume flow rate monitoring

Sizing data

qᵥ [m³/h]
Δpst[Pa]

Air-regenerated noise

LPA [dB(A)]

Case-radiated noise

LPA [dB(A)]

Equivalence criteria

Declaration of hygiene conformity in accordance with VDI 6022, Part 1 (01/2018), ÖNORM H 6020 (02/2007) and ÖNORM H 6021 (09/2003)
Acoustic data determined in accordance with ÖNORM EN ISO 5135
The test report of the factory parameterisation, functional test and adjustment under air by reference measurement on a regularly validated test rig in accordance with DIN EN ISO 9001 is provided

Order code for fume cupboard control (with EASYLAB attachment)

TVLK

–

250 – 100

ELAB

FH – VS

UMZS

200 – 900 [m³/h]

1 Type
TVLK VAV terminal unit, plastic

2 Air duct connection
No entry: spigot
FL Flanges on both ends

3 Nominal size
250 - 100 Bluff body 100
250 - 160 Bluff body 160
250 - D08 Nozzle D08
250 - D10 Nozzle D10
250 - D16 Nozzle D16

4 Accessories
No entry: none
GK Matching flanges on both ends

5 Attachments (control component)
ELAB EASYLAB controller TCU3

6 Actuators
S Fast-running actuator (3 s)
SD Fast-running actuator (3 s), with digital communication interface (TROX HPD)

7 Equipment function
Fume cupboard control
With face velocity transducer
FH-VS Fume cupboard control – control strategy based on face velocity (for face velocity transducer) With face velocity transducer and sash distance sensor
FH-VD Fume cupboard control – optimised control strategy based on face velocity (for face velocity transducer + sash distance sensor)
With sash distance sensor
FH-DS Fume cupboard control – linear control strategy (for sash distance sensor)
FH-DV Fume cupboard control – safety optimised control strategy (for sash distance sensor)
With switch contacts (provided by the client) for switching steps
FH-2P Fume cupboard control – 2 switching steps (for one switch contact, provided by the client)
FH-3P Fume cupboard control – 3 switching steps (for two switch contacts, provided by the client)
Without signalling
FH-F Fume cupboard control - fixed value operation, one setpoint value (no external switch contact)

8 Expansion modules
Option 1: Supply voltage
No entry: 24 V AC/DC supply
T with EM-TRF for 230 V AC mains supply
U with EM-TRF-USV (including battery pack) for uninterruptible 230 V AC power supply (UPS)
Option 2: Digital communication interface
No entry: none
B with EM-BAC-MOD for BACnet MS/TP
M with EM-BAC-MOD for Modbus RTU
I with EM-IP for BACnet IP, Modbus IP and web server
R with EM-IP (including real time clock, RTC) for BACnet IP, Modbus IP and web server
Option 3: Automatic zero-point adjustment
No entry: none
Z with EM-AUTOZERO, solenoid valve for automatic zero-point adjustment
Option 4: Lighting switch
No entry: none
S with EM-LIGHT, connection socket for lighting, switchable on control panel (can only be used in conjunction with EM-TRF or EM-TRF UPS)

9 Operating values for factory setting
Volume flow rate [m³/h or l/s]
Depending on: equipment function
FH-VS: qᵥmin – qᵥmax
FH-VD: qᵥmin – qᵥmax
FH-DS: qᵥmin – qᵥmax
FH-DV: qᵥmin – qᵥmax
FH-2P: qᵥ1/qᵥ2
FH-3P: qᵥ1/qᵥ2/qᵥ3
FH-F: qᵥ1

Useful additions
Control panel for fume cupboard controllers, for displaying the functions of the control system according to DIN EN 14175
BE-SEG-02 OLED-Display
CP-TOUCH-4.3 Touch control panel with 4.3"

Order example: TVLK-FL/250–100/GK/ELAB/S/FH-VS/200–900 m³/h

Duct connection	With flange
Nominal size	250 with bluff body 100
Accessories	Matching flanges for both ends
Attachments (control component)	EASYLAB controller with fast-running actuator
Actuator	Fast-running actuator (3 s)
Equipment function	Fume cupboard control with face velocity transducer
Volume flow rate	qvmin = 200 m³/h qvmax = 900 m³/h

Téléchargements

Information produit

Basic information and nomenclature - VAV terminal units

Basic-information-and-nomenclature_VAV-terminal-units_PD_2022_02_25_DE_en Basic information and nomenclature 490 ko pdf
Product data sheet Type TVLK

TVLK_PD_2026_02_11_DE_en Product data sheet 770 ko pdf

Certificats

Certificate concerning statistical leakage tests

LC_v1_2024_10_DE_en Certificate 660 ko pdf
Classe d'étanchéité des composants de ventilation TROX

Classe d'étanchéité_2021_05_31_DE_fr Certificat 670 ko pdf
Classification aux fuites des composants de ventilation TROX

Leckageklassifizierung-FK2-EU-v1_HC_2021_05_31_DE_fr Certificat 670 ko pdf
Declaration of conformity or declaration of incorporation Type TVLK

CE_VVS_DE_en Declaration of conformity or declaration of incorporation 70 ko pdf
Declaration of conformity or declaration of incorporation Type TVLK

CE/2010-12/TVLK/DE/en Declaration of conformity or declaration of incorporation 66 ko pdf
Declaration of hygiene conformity Type TVLK

TVLK_HC_2025_10_en Declaration of hygiene conformity 1.4 Mo pdf
Leakage classification of TROX ventilation components

Leckageklassifizierung-_v1_2022_07_07_DE_en Certificate 680 ko pdf

Manuels d'utilisation

Installation manual Type VVS-Regelgeräte

A00000066402 Installation manual 1.4 Mo pdf

Références

TROX Services

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TVLK

Optimised for use in laboratories and on fume cupboards

General information

Information technique

Téléchargements

Information produit

Basic information and nomenclature - VAV terminal units

Product data sheet Type TVLK

Certificats

Certificate concerning statistical leakage tests

Classe d'étanchéité des composants de ventilation TROX

Classification aux fuites des composants de ventilation TROX

Declaration of conformity or declaration of incorporation Type TVLK

Declaration of conformity or declaration of incorporation Type TVLK

Declaration of hygiene conformity Type TVLK

Leakage classification of TROX ventilation components

Manuels d'utilisation

Installation manual Type VVS-Regelgeräte

Références

TROX Services

NÉCESSAIRE D’UN POINT DE VUE TECHNIQUE

STATISTIQUES ET ANALYSE DE SITE WEB

COMMODITÉ ET PERSONNALISATION

POUR LA MEILLEURE EXPÉRIENCE TROX POSSIBLE