Differential pressure measurement via damper blade
Application
Special features
Nominal sizes
Variants
Construction
Parts and characteristics
Attachments
Accessories
Useful additions
Construction features
Materials and surfaces
Galvanised sheet steel
Powder-coated construction (P1)
Stainless steel construction (A2)
Acoustic cladding
Mineral wool
Standards and guidelines
Fulfils the hygiene requirements of
Casing leakage
Closed blade air leakage:
NS 100 – 160
NS 200 – 400
Maintenance
① Double lip seal
② Casing
③ Damper blade including effective pressure sensor
④ Shaft with effective pressure channel
⑤ Electronic volume flow controller
Functional description
The control damper blade works as an actuator and as an effective pressure sensor. Through the effective pressure channel in the shaft, the detected effective pressure reaches the transducer (static or dynamic), where it is converted into an electrical signal and compared with the setpoint value. If there is a control deviation, the integrated actuator changes the position of the control damper blade. As a result, the volume flow rate is maintained at a constant level in close tolerances over the entire differential pressure range.
Nominal sizes | 100 – 400 mm |
Volume flow rate range | 4 - 1388 l/s or 14 - 5000 m³/h |
Volume flow rate control range (unit with dynamic effective pressure measurement) | Approx. 4 – 100 % of the nominal volume flow rate |
Minimum differential pressure | Up to 50 Pa (without circular silencer) |
Maximum differential pressure | Control component with dynamic transducer: 900 Pa, control component with static transducer: 600 Pa |
Operating temperature | 10 to 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. Sufficient static differential pressure (Δpstat,min) must be ensured for all operating conditions and for all controllers. 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 dynamic and static pressure measurements
Attachment: Easy, XB0, XM0, XM0-J6, XS0, XS0-J6
Nominal size | qv [l/s] | qv [m³/h] | Δpstmin [Pa] | Δqv [±%] | |||
---|---|---|---|---|---|---|---|
① | ② | ③ | ④ | ||||
100 | 4 | 14 | 1 | 1 | 1 | 1 | 18 |
100 | 35 | 127 | 6 | 9 | 11 | 13 | 7 |
100 | 67 | 241 | 22 | 29 | 37 | 44 | 5 |
100 | 98 | 354 | 46 | 63 | 79 | 95 | 5 |
125 | 6 | 21 | 1 | 1 | 1 | 1 | 19 |
125 | 58 | 207 | 6 | 7 | 9 | 11 | 7 |
125 | 109 | 393 | 19 | 25 | 31 | 37 | 5 |
125 | 160 | 579 | 41 | 54 | 68 | 81 | 5 |
160 | 10 | 35 | 1 | 1 | 1 | 1 | 18 |
160 | 93 | 333 | 7 | 8 | 9 | 10 | 7 |
160 | 175 | 631 | 22 | 26 | 30 | 34 | 5 |
160 | 258 | 929 | 47 | 56 | 65 | 74 | 5 |
200 | 16 | 55 | 1 | 1 | 1 | 1 | 18 |
200 | 150 | 541 | 6 | 6 | 7 | 8 | 7 |
200 | 285 | 1027 | 19 | 22 | 25 | 29 | 5 |
200 | 420 | 1513 | 40 | 47 | 54 | 61 | 5 |
250 | 25 | 87 | 1 | 1 | 1 | 1 | 18 |
250 | 228 | 822 | 5 | 6 | 7 | 7 | 7 |
250 | 433 | 1558 | 17 | 20 | 22 | 25 | 5 |
250 | 636 | 2293 | 37 | 42 | 47 | 53 | 5 |
315 | 52 | 186 | 1 | 1 | 1 | 1 | 16 |
315 | 359 | 1291 | 7 | 8 | 8 | 9 | 7 |
315 | 665 | 2395 | 23 | 25 | 26 | 28 | 6 |
315 | 972 | 3500 | 49 | 53 | 56 | 59 | 5 |
400 | 117 | 420 | 1 | 1 | 1 | 1 | 14 |
400 | 541 | 1947 | 8 | 8 | 8 | 8 | 7 |
400 | 965 | 3473 | 23 | 24 | 25 | 26 | 6 |
400 | 1388 | 5000 | 47 | 49 | 51 | 53 | 5 |
① Basic unit
② Basic unit with circular silencer CF, insulation thickness 50 mm, length 500 mm
③ Basic unit with circular silencer CF, insulation thickness 50 mm, length 1000 mm
④ Basic unit with circular silencer CF, insulation thickness 50 mm, length 1500 mm
Quick sizing table for sound pressure levels
The quick sizing tables are based on generally accepted attenuation levels. If the sound pressure level exceeds the required level, a larger air terminal unit and/or a silencer or acoustic cladding is required. For more information on the acoustic data, see basic information and nomenclature.
Quick sizing table for air-regenerated noise LPA
Controller including silencer
Nominal size | qv [l/s] | qv [m³/h] | Δpst = 150 Pa | Δpst = 500 Pa | ||||||
---|---|---|---|---|---|---|---|---|---|---|
① | ② | ③ | ④ | ① | ② | ③ | ④ | |||
100 | 4 | 14 | 32 | < 15 | < 15 | < 15 | 42 | 17 | < 15 | < 15 |
100 | 35 | 127 | 46 | 32 | 28 | 24 | 56 | 40 | 34 | 31 |
100 | 67 | 241 | 51 | 37 | 33 | 29 | 60 | 47 | 42 | 38 |
100 | 98 | 354 | 55 | 37 | 32 | 30 | 64 | 52 | 47 | 44 |
125 | 6 | 21 | 37 | 15 | < 15 | < 15 | 48 | 26 | 16 | < 15 |
125 | 58 | 207 | 48 | 34 | 28 | 25 | 59 | 42 | 35 | 31 |
125 | 109 | 393 | 52 | 39 | 34 | 31 | 62 | 47 | 41 | 37 |
125 | 160 | 579 | 56 | 41 | 37 | 34 | 63 | 49 | 44 | 40 |
160 | 10 | 35 | 42 | 24 | 15 | < 15 | 54 | 38 | 29 | 22 |
160 | 93 | 333 | 45 | 33 | 28 | 25 | 58 | 43 | 36 | 31 |
160 | 175 | 631 | 50 | 38 | 34 | 31 | 58 | 44 | 38 | 34 |
160 | 258 | 929 | 53 | 40 | 35 | 33 | 57 | 44 | 39 | 36 |
200 | 16 | 55 | 33 | 20 | < 15 | < 15 | 44 | 32 | 26 | 21 |
200 | 150 | 541 | 46 | 36 | 31 | 28 | 57 | 47 | 42 | 39 |
200 | 285 | 1027 | 49 | 38 | 34 | 32 | 58 | 49 | 44 | 41 |
200 | 420 | 1513 | 53 | 43 | 40 | 38 | 58 | 49 | 45 | 42 |
250 | 25 | 87 | 40 | 29 | 22 | 17 | 52 | 42 | 36 | 31 |
250 | 228 | 822 | 46 | 37 | 32 | 29 | 58 | 50 | 45 | 41 |
250 | 433 | 1558 | 47 | 39 | 34 | 32 | 57 | 50 | 45 | 41 |
250 | 636 | 2293 | 52 | 45 | 41 | 38 | 57 | 50 | 45 | 42 |
315 | 52 | 186 | 42 | 34 | 28 | 24 | 54 | 47 | 42 | 38 |
315 | 359 | 1291 | 43 | 36 | 31 | 28 | 55 | 48 | 44 | 41 |
315 | 665 | 2395 | 45 | 38 | 33 | 31 | 54 | 48 | 44 | 41 |
315 | 972 | 3500 | 48 | 41 | 37 | 34 | 54 | 47 | 44 | 41 |
400 | 117 | 420 | 47 | 42 | 37 | 32 | 57 | 53 | 48 | 43 |
400 | 541 | 1947 | 45 | 40 | 35 | 31 | 55 | 50 | 46 | 43 |
400 | 541 | 1947 | 44 | 38 | 34 | 31 | 54 | 49 | 46 | 42 |
400 | 1388 | 5000 | 48 | 42 | 38 | 35 | 54 | 49 | 45 | 42 |
Air-regenerated noise LPA [dB(A)] at static differential pressure Δpst 150 or 500 Pa
① Basic unit
Quick sizing table for case-radiated noise LPA
Controller including acoustic cladding
Nominal size | qv [l/s] | qv [m³/h] | Δpst = 150 Pa | Δpst = 500 Pa | ||
---|---|---|---|---|---|---|
① | ② | ① | ② | |||
100 | 4 | 14 | 15 | < 15 | 25 | < 15 |
100 | 35 | 127 | 29 | 18 | 39 | 28 |
100 | 67 | 241 | 34 | 23 | 43 | 32 |
100 | 98 | 354 | 37 | 26 | 48 | 37 |
125 | 6 | 21 | 20 | < 15 | 31 | 20 |
125 | 58 | 207 | 31 | 20 | 42 | 31 |
125 | 109 | 393 | 35 | 24 | 45 | 34 |
125 | 160 | 579 | 40 | 29 | 47 | 36 |
160 | 10 | 35 | 22 | 15 | 34 | 27 |
160 | 93 | 333 | 25 | 18 | 38 | 31 |
160 | 175 | 631 | 31 | 24 | 39 | 32 |
160 | 258 | 929 | 36 | 29 | 40 | 33 |
200 | 16 | 55 | < 15 | < 15 | 24 | < 15 |
200 | 150 | 541 | 26 | < 15 | 37 | 22 |
200 | 285 | 1027 | 32 | 17 | 41 | 26 |
200 | 420 | 1513 | 38 | 23 | 43 | 28 |
250 | 25 | 87 | 24 | < 15 | 36 | 21 |
250 | 228 | 822 | 32 | 17 | 44 | 29 |
250 | 433 | 1558 | 36 | 21 | 46 | 31 |
250 | 636 | 2293 | 43 | 28 | 48 | 33 |
315 | 52 | 186 | 27 | < 15 | 38 | 21 |
315 | 359 | 1291 | 32 | 15 | 44 | 27 |
315 | 665 | 2395 | 37 | 19 | 46 | 28 |
315 | 972 | 3500 | 41 | 24 | 47 | 30 |
400 | 117 | 420 | 32 | 16 | 42 | 26 |
400 | 541 | 1947 | 36 | 20 | 46 | 30 |
400 | 965 | 3473 | 37 | 21 | 48 | 32 |
400 | 1388 | 5000 | 43 | 27 | 49 | 33 |
Case-radiated noise LPA [dB(A)] at static differential pressure Δpst 150 or 500 Pa
① Basic unitNote:
Information on case-radiated noise for combinations of basic unit and optional acoustic cladding and secondary silencer can be found in the Easy Product Finder design program.
Specification text
Circular VAV terminal units for variable and constant air volume systems, suitable for supply or extract air, available in 7 nominal sizes. High control accuracy even in case of unfavourable upstream conditions. Control range at least 1:25. The effective pressure is captured by means of the damper blade, which is controlled accordingly. The effective pressure is transmitted to the control component via a channel in the shaft (no measuring tubes required). Closed blade air leakage to EN 1751: at least class 3, from NS 200: class 4. Casing air leakage to EN 1751, class C. Ready-to-commission unit which consists of the mechanical parts and the factory mounted electronic control component. Position of the damper blade indicated externally at the control component 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
Materials and surfaces
Equivalence criteria
Connection
Technical data
Maximum differential pressure
Specification text for attachment
Variable volume flow control with electronic Easy controller to connect an external control signal; actual value signal can be integrated into the central BMS.
Electrical connections with screw terminals. Double terminals for looping the supply voltage, i.e. for the simple connection of voltage transmission to the next controller.
TVE | – | D | / | 200 | / | D2 | / | Easy |
| | | | | | | | | | ||||
1 | 2 | 5 | 6 | 7 | ||||
Acoustic cladding | With |
Material | Galvanised sheet steel |
Nominal size | 200 mm |
Accessories | Double lip seal both sides |
Attachments (control components) | Easy volume flow controller, dynamic, analogue interface, setting qvmin and qvmax with potentiometers |
TVE | – | D | – | P1 | – | FL | / | 100 | / | D2 | / | XB0 | / | V | 0 | / | 200 – 900 [m³/h] |
| | | | | | | | | | | | | | | | | | | | ||||||||
1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 |
Acoustic cladding | Without |
Material | Galvanised sheet steel |
Flange | Without |
Nominal size | 200 mm |
Accessories | Double lip seal both ends |
Attachments (control components) | Volume flow controller, dynamic, analogue interface |
Operating mode | Variable |
Signal voltage range | 0 – 10V DC |
Volume flow rate | qvmin = 500 m³/hqvmax = 1200 m³/h |
Material
Order code detail | Part | Material |
---|---|---|
- | Casing | Galvanised steel |
- | Damper blade | Plastic, PA6, UL 94, flame retardant |
- | Damper blade seal | Plastic, TPU, micro bacterial resistant |
- | Effective pressure sensor | Plastic, PA6, UL 94, flame retardant |
- | Plain bearings | Plastic |
- | Shaft | Plastic, PA6, UL 94, flame retardant |
Order code detail | Part | Material |
---|---|---|
P1 | Casing | Galvanised sheet steel - powder coated, RAL 7001, silver grey |
P1 | Damper blade | Plastic, PA6, UL 94, flame retardant |
P1 | Damper blade seal | Plastic, TPU, micro bacterial resistant |
P1 | Effective pressure sensor | Plastic, PA6, UL 94, flame retardant |
P1 | Plain bearings | Plastic |
P1 | Shaft | Plastic, PA6, UL 94, flame retardant |
Order code detail | Part | Material |
---|---|---|
A2 | Casing | Stainless steel, material no. 1.4301 |
A2 | Damper blade | Plastic, PA6, UL 94, flame retardant |
A2 | Damper blade seal | Plastic, TPU, micro bacterial resistant |
A2 | Effective pressure sensor | Plastic, PA6, UL 94, flame retardant |
A2 | Plain bearings | Plastic |
A2 | Shaft | Plastic, PA6, UL 94, flame retardant |
Order code detail | Part | Material |
---|---|---|
D | Acoustic cladding | Galvanised sheet steel |
D | Insulation of structure-borne noise Polyethylene, PE | Polyethylene, PE |
D | Lining | Mineral wool to EN 13501, fire rating class A1, non-combustible |
NS | L | ∅D | kg |
---|---|---|---|
100 | 310 | 99 | 1,3 |
125 | 310 | 124 | 1,5 |
160 | 310 | 159 | 1,8 |
200 | 400 | 199 | 2,5 |
250 | 400 | 249 | 3 |
315 | 400 | 314 | 3,8 |
400 | 485 | 399 | 4,9 |
Dimensions/weight TVE-D
NS | L | L₁ | ∅D | ∅D₃ | kg |
---|---|---|---|---|---|
100 | 310 | 233 | 99 | 199 | 2,6 |
125 | 310 | 233 | 124 | 219 | 3 |
160 | 310 | 233 | 159 | 261 | 3,6 |
200 | 400 | 312 | 199 | 299 | 5 |
250 | 400 | 312 | 249 | 354 | 6,1 |
315 | 400 | 312 | 314 | 416 | 7,5 |
400 | 485 | 417 | 399 | 498 | 10,6 |
Dimensions/weight TVE-FL
NS | L | ∅D | ∅D₁ | ∅D₂ | n | D | kg |
---|---|---|---|---|---|---|---|
100 | 298 | 99 | 132 | 152 | 4 | 5 | 1,9 |
125 | 298 | 124 | 157 | 177 | 4 | 5 | 2,2 |
160 | 298 | 159 | 192 | 212 | 6 | 5 | 2,7 |
200 | 388 | 199 | 233 | 253 | 6 | 5 | 3,6 |
250 | 388 | 249 | 283 | 303 | 6 | 5 | 4,4 |
315 | 388 | 314 | 352 | 378 | 8 | 5 | 5,8 |
400 | 474 | 399 | 438 | 464 | 8 | 5 | 7,5 |
Note: Tolerances for dimensions L: ± 5 mm
Dimensions/weight for TVE-D-FL
NS | L | L₁ | ∅D | ∅D₁ | ∅D₂ | ∅D₃ | n | D | kg |
---|---|---|---|---|---|---|---|---|---|
100 | 298 | 233 | 99 | 132 | 152 | 199 | 4 | 5 | 3,2 |
125 | 298 | 233 | 124 | 157 | 177 | 219 | 4 | 5 | 3,7 |
160 | 298 | 233 | 159 | 192 | 212 | 261 | 6 | 5 | 4,5 |
200 | 388 | 312 | 199 | 233 | 253 | 299 | 6 | 5 | 6,1 |
250 | 388 | 312 | 249 | 283 | 303 | 354 | 6 | 5 | 7,5 |
315 | 388 | 312 | 314 | 352 | 378 | 416 | 8 | 5 | 9,5 |
400 | 474 | 417 | 399 | 438 | 464 | 498 | 8 | 5 | 13,2 |
Note: Tolerance for dimension L: ± 5 mm
Installation and commissioning
Upstream conditions
The effective pressure, which is decisive for the volume flow rate, is recorded and averaged on the control damper blade. Therefore, the volume flow rate accuracy Δqv is independent of the upstream section.
Duct connections, e.g. branches off the main duct, must comply with EN 1506 and EN 13180.
TVE control components VARYCONTROL
Attachment | Controlled variable | Interface | Effective pressure transducer | Actuator | Manufacturer |
---|---|---|---|---|---|
Easy controller, dynamic | |||||
Easy | qv | 0 – 10 V | integral | Slow running integral | ① |
Compact controller, dynamic | |||||
XB0 | qv | 0 – 10 V or 2 – 10 V | integral | Slow running integral | ① |
XM0 | qv | Modbus RTU interface | integral | Slow running integral | ① |
XM0–J6 | qv | Modbus RTU interface with RJ12 socket (for X-AIRCONTROL) | integral | Slow running integral | ① |
Compact controller, static | |||||
XS0 | qv | Modbus RTU interface | integral | Slow running integral | ① |
XS0–J6 | qv | Modbus RTU interface with RJ12 socket (for X-AIRCONTROL) | integral | Slow running integral | ① |
qv Volume flow rate
① TROX
Space requirement, control component on one side
Attachment | ① | ② | ③ |
---|---|---|---|
Easy controller: Easy | 250 | 200 | 300 |
Compact controller: XB0, XM0, XM0-J6, XS0, XS0-J6 | 250 | 200 | 300 |
Space required for commissioning and maintenance
Keep sufficient space free in the area of the attachments for commissioning and maintenance. It may be necessary to provide sufficiently sized inspection access openings.
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Our department for Service-Requests will contact you asap.
For general question regarding products or services you can also call:
Tel.: +44 (0)1842 754545 | Fax: +44 (0)1842 763051