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
Nominal sizes | 250 mm |
Volume flow rate range | 30 – 515 l/s or 108 – 1854 m³ /h |
Volume flow rate control range | Approx. 15 to 100 % of the nominal volume flow rate |
Minimum differential pressure | 5 – 130 Pa |
Maximum differential pressure | 1000 Pa |
Operating temperature | 10 – 50 °C |
Quick sizing tables provide a good overview of the minimum differential pressures, the volume flow rate accuracy and the room sound pressure levels that can be expected. Intermediate values may be achieved by interpolation.
The sound power levels for calculating the sound pressure levels were measured in the TROX laboratory according to DIN EN ISO 5135 - see "Basic information and nomenclature".
Precise results and spectral data for all control components can be calculated with our Easy Product Finder design program. The first selection criteria for the nominal size are the actual volume flow rates qvmin and qvmax.
Volume flow rate ranges and minimum differential pressure values
The minimum differential pressure of VAV terminal units is an important factor in designing the ductwork and in rating the fan including speed control. It must be ensured that for all operating conditions and for all terminal units a sufficient pressure differential is applied to each controller (Δpstat,min). The measurement points for fan speed control must be selected accordingly. The volume flow rates given for VAV terminal units depend on the nominal size and on the control component (attachment) that is installed.
Volume flow rate ranges and minimum differential pressure values
Controller for static pressure measurements
Attachment: ELAB
NS | qv [l/s] | qv [m³/h] | Δpstmin [Pa] | Δqv [±%] | |||
---|---|---|---|---|---|---|---|
① | ② | ③ | ④ | ||||
250 - 100 | 57 | 202 | 2 | 2 | 2 | 2 | 10 |
250 - 100 | 172 | 618 | 17 | 18 | 18 | 18 | 7 |
250 - 100 | 288 | 1035 | 48 | 49 | 50 | 50 | 5 |
250 - 100 | 403 | 1451 | 94 | 95 | 97 | 99 | 5 |
250 - 160 | 30 | 108 | 3 | 3 | 3 | 3 | 10 |
250 - 160 | 92 | 330 | 26 | 26 | 26 | 26 | 7 |
250 - 160 | 153 | 551 | 71 | 71 | 72 | 72 | 6 |
250 - 160 | 214 | 773 | 139 | 140 | 140 | 141 | 5 |
250 - D08 | 76 | 273 | 1 | 1 | 1 | 2 | 11 |
250 - D08 | 233 | 838 | 9 | 9 | 10 | 10 | 7 |
250 - D08 | 389 | 1402 | 23 | 25 | 26 | 28 | 6 |
250 - D08 | 546 | 1967 | 45 | 48 | 51 | 54 | 5 |
250 - D10 | 55 | 196 | 2 | 2 | 2 | 2 | 10 |
250 - D10 | 167 | 601 | 10 | 11 | 11 | 11 | 7 |
250 - D10 | 279 | 1006 | 28 | 29 | 29 | 30 | 6 |
250 - D10 | 391 | 1411 | 54 | 56 | 57 | 59 | 5 |
250 - D16 | 31 | 111 | 2 | 2 | 2 | 2 | 10 |
250 - D16 | 94 | 340 | 15 | 15 | 16 | 16 | 7 |
250 - D16 | 158 | 569 | 42 | 42 | 43 | 43 | 5 |
250 - D16 | 221 | 798 | 82 | 83 | 83 | 84 | 5 |
① Basic unit
② Basic unit with circular silencer CAK, insulation thickness 50 mm, length 500 mm
③ Basic unit with circular silencer CAK, insulation thickness 50 mm, length 1000 mm
④ Basic unit with circular silencer CAK, insulation thickness 50 mm, length 1500 mm
Quick sizing table for sound pressure level
In the quick sizing tables, practical attenuation and insulation values (system attenuation) are included in the tables. If the sound pressure level exceeds the required level, a larger air terminal unit and/or a silencer is required. For more information on the acoustic data, see the basic information and nomenclature.
Quick sizing table for air-regenerated noise LPA
Controller including silencer
(total flow rate range of type)
NS | qv [l/s] | qv [m³/h] | 150 Pa | 500 Pa | ||||||
---|---|---|---|---|---|---|---|---|---|---|
① | ② | ③ | ④ | ① | ② | ③ | ④ | |||
250 - 100 | 57 | 202 | 40 | 34 | 30 | 27 | 53 | 47 | 44 | 40 |
250 - 100 | 172 | 618 | 48 | 41 | 37 | 33 | 60 | 54 | 50 | 47 |
250 - 100 | 288 | 1035 | 49 | 41 | 38 | 34 | 62 | 55 | 52 | 48 |
250 - 100 | 403 | 1451 | 50 | 42 | 38 | 35 | 63 | 56 | 52 | 49 |
250 - 160 | 30 | 108 | 40 | 34 | 31 | 28 | 54 | 49 | 46 | 42 |
250 - 160 | 92 | 330 | 45 | 39 | 35 | 32 | 59 | 54 | 50 | 47 |
250 - 160 | 153 | 551 | 46 | 40 | 37 | 34 | 61 | 55 | 52 | 49 |
250 - 160 | 214 | 773 | 47 | 40 | 36 | 33 | 61 | 55 | 52 | 48 |
250 - D08 | 76 | 273 | 33 | 25 | 21 | 18 | 41 | 33 | 30 | 26 |
250 - D08 | 233 | 838 | 41 | 33 | 30 | 27 | 49 | 42 | 38 | 35 |
250 - D08 | 389 | 1402 | 43 | 36 | 32 | 29 | 51 | 44 | 40 | 37 |
250 - D08 | 546 | 1967 | 45 | 37 | 34 | 31 | 53 | 45 | 42 | 39 |
250 - D10 | 55 | 196 | 38 | 32 | 28 | 25 | 45 | 39 | 35 | 32 |
250 - D10 | 167 | 601 | 45 | 37 | 34 | 31 | 52 | 45 | 41 | 39 |
250 - D10 | 279 | 1006 | 46 | 38 | 35 | 32 | 53 | 46 | 42 | 40 |
250 - D10 | 391 | 1411 | 46 | 39 | 35 | 32 | 53 | 46 | 43 | 40 |
250 - D16 | 31 | 111 | 35 | 30 | 27 | 24 | 47 | 42 | 39 | 36 |
250 - D16 | 94 | 340 | 43 | 38 | 35 | 32 | 55 | 50 | 47 | 44 |
250 - D16 | 158 | 569 | 46 | 41 | 38 | 35 | 58 | 53 | 50 | 47 |
250 - D16 | 221 | 798 | 47 | 41 | 39 | 36 | 59 | 54 | 51 | 48 |
Air-regenerated noise LPA [dB] at static differential pressure Δpst of 150 or 500 Pa
① Basic unit
② Basic unit with circular silencer CAK, insulation thickness 50 mm, length 500 mm
③ Basic unit with circular silencer CAK, insulation thickness 50 mm, length 1000 mm
④ Basic unit with circular silencer CAK, insulation thickness 50 mm, length 1500 mm
Quick sizing table for case-radiated noise LPA
NS | qv [l/s] | qv [m³/h] | 150 Pa | 500 Pa |
---|---|---|---|---|
① | ||||
250 - 100 | 57 | 202 | 27 | 40 |
250 - 100 | 172 | 618 | 35 | 48 |
250 - 100 | 288 | 1035 | 39 | 52 |
250 - 100 | 403 | 1451 | 42 | 54 |
250 - 160 | 30 | 108 | 25 | 39 |
250 - 160 | 92 | 330 | 30 | 44 |
250 - 160 | 153 | 551 | 32 | 47 |
250 - 160 | 214 | 773 | 34 | 48 |
250 - D08 | 76 | 273 | 21 | 29 |
250 - D08 | 233 | 838 | 31 | 39 |
250 - D08 | 389 | 1402 | 36 | 44 |
250 - D08 | 546 | 1967 | 39 | 47 |
250 - D10 | 55 | 196 | 25 | 32 |
250 - D10 | 167 | 601 | 32 | 40 |
250 - D10 | 279 | 1006 | 36 | 43 |
250 - D10 | 391 | 1411 | 38 | 45 |
250 - D16 | 31 | 111 | 22 | 34 |
250 - D16 | 94 | 340 | 30 | 42 |
250 - D16 | 158 | 569 | 34 | 46 |
250 - D16 | 221 | 798 | 36 | 48 |
Case-radiated noise LPA [dB] at static differential pressure Δpst of 150 or 500 Pa
n.a.: The specified static differential pressure Δpst is less than Δpst min.
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 featuresClosed blade air leakage to EN 1751, class 4
Casing air leakage to EN 1751, class C
Specification text for attachment
Variable volume flow control with an electronic EASYLAB controller for fume cupboards
Sizing data
TVLK | – | FL | / | 250 – 100 | / | GK | / | ELAB | / | S | / | FH – VS | / | UMZS | / | 200 – 900 [m³/h] |
| | | | | | | | | | | | | | | | | | ||||||||
1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | ||||||||
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 |
TVLK | – | FL | / | 250 – 100 | / | GK | / | ELAB | / | S | / | EC | – | E0 | / | UMZ | / | … [m³/h] |
| | | | | | | | | | | | | | | | | | | | |||||||||
1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | |||||||||
Duct connection | Spigot |
Nominal size | 250 with nozzle D08 |
Attachments (control component) | EASYLAB controller TCU3 |
Actuator | Fast-running actuator (3 s) |
external volume flow rate setting | Voltage signal 2 – 10 V DC |
Operating values | qvmin = 400 m³/h qvmax = 1600 m³/h |
Attachments
Type Universal, static
Type EASYLAB TCU3
Additional products
Type CAK
Order code detail | Part | Material |
---|---|---|
- | Casing | Plastic, polypropylene (PPs), flame resistant |
- | Effective pressure sensor | Plastic, polypropylene (PPs), flame resistant |
- | Damper blade | Plastic, polypropylene (PPs), flame resistant |
- | Damper blade seal | Thermoplastic elastomer (TPE) |
- | Shaft | Galvanised steel |
- | Plain bearings | Plastic, polypropylene (PPs), flame resistant |
Optional flange
Order code detail | Part | Material |
---|---|---|
FL | Flange | Plastic, polypropylene (PPs), flame resistant |
Optional matching flange
Order code detail | Part | Material |
---|---|---|
GK |
Matching flange | Plastic, polypropylene (PPs), flame resistant |
GK | Seal | Rubber, EPDM |
Dimensions/weight of TVLK
NS | kg |
---|---|
250 | 5.1 |
Dimensions/weights of TVLK-FL
NS | kg |
---|---|
250 | 5.7 |
Space required for commissioning and maintenance
Sufficient space must be kept clear near any attachments to allow for commissioning and maintenance. It may be necessary to provide sufficiently sized inspection access openings. Product illustrations do not show any installation situation details. If an attachment requires a certain installation orientation, this is specified on a sticker on the product.
Space requirement, control components on two sides
Attachment | ① | ② | ③ | ④ | ⑤ | ⑥ |
---|---|---|---|---|---|---|
LABCONTROL |
||||||
EASYLAB: ELAB |
350 | 350 | 400 | 300 | 250 | 300 |
Space required for cleaning the sensor tubes
Nominal size
|
①
|
②
|
③
|
250-* bluff body | 100 | 160 |
D *** |
250-** nozzle | 100 | 160 | 100 |
* Available bluff body sizes: 100 mm, 160 mm
** Available Venturi nozzle sizes: D08, D10, D16
*** D: Casing diameter
Installation orientation
Commissioning
Upstream conditions
The volume flow rate accuracy Δqᵥ applies to a straight upstream section of the duct. Bends, junctions or a narrowing or widening of the duct cause turbulence that may affect measurement. Duct connections, e.g. branches off the main duct, must comply with EN 1505.
LABCONTROL EASYLAB control components
Attachment | Controlled variable | Interface | Effective pressure transducer | Actuator | Manufacturer |
---|---|---|---|---|---|
EASYLAB | |||||
ELAB | qv, Δp * | TROX plug and play communication system and 0 - 10 V or 2 - 10 V or with optional accessories: Modbus, BACnet, web server | qv = integral Δp = separate | fast-running, separate or fast-running with digital communication interface (TROX HPD), separate | ③ |
① TROX
* The controlled variable depends on the type of VAV terminal unit
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Ние сме тук за Вас
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Тел.: +359 2 981 25 74 | Факс: +359 2 986 20 65
За контакти
Благодарим Ви за Вашето съобщение!
Вашето съобщение е изпратено и ще бъде обработено в кратък срок.
Нашият отдел за Обслужване-Искания ще се свърже с Вас възможно най-скоро.
За общи въпроси относно продукти или услуги можете да се свържете също с:
Тел.: +359 2 981 25 74 | Факс: +359 2 986 20 65