Volume flow rate measuring unit, variant VMR/.../BB0
Circular volume flow rate measuring units for the recording or monitoring of volume flow rates
Optional equipment and accessories
Application
Special characteristics
Nominal sizes
Variants
Construction
Parts and characteristics
Attachments
Accessories
Construction features
Materials and surfaces
Galvanised sheet steel construction
Powder-coated construction (P1)
Stainless steel construction (A2)
Standards and guidelines
Maintenance
Functional description
The measuring unit is fitted with an effective pressure sensor for measuring the volume flow rate.
The effective pressure is either measured and evaluated manually, or transformed into an electric signal by a pressure transducer.
Nominal sizes | 100 – 400 mm |
Volume flow rate range | 10 – 1680 l/s or 36 – 6048 m³/h |
Measurement accuracy | ± 5 % of the measured value |
Effective pressure range | approx. 5 – 250 Pa |
Measuring unit differential pressure (pressure loss) | 10 – 26 % of the measured effective pressure |
Operating temperature | 10 – 50 °C |
Circular volume flow rate measuring unit for the measurement of volume flow rates in air conditioning systems, available in 7 nominal sizes.
For the manual volume flow rate measuring or for the permanent monitoring of the actual value signal.
Ready-to-commission unit which consists of the casing with an averaging differential pressure sensor.
Differential pressure sensor with 3 mm measuring holes, thus resistant to dust and pollution.
Both ends spigot with groove for lip seal, suitable for connecting ducts to EN 1506 or EN 13180.
Casing air leakage to EN 1751, class C.
Special characteristics
Materials and surfaces
Galvanised sheet steel construction
Powder-coated construction (P1)
Stainless steel construction (A2)
Construction
Technical data
Attachments
Volume flow rate measurement with static differential pressure transducer emitting an actual value signal for integration into the central BMS.
Sizing data
This specification text describes the general properties of the product. Texts for variants can be generated with our Easy Product Finder design programme.
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Notes on the order code
VMR/.../ELAB/FH-*
Order example: VMR/160/D2/B10/E0
Nominal size | 160 mm |
Accessories | Lip seals on both ends |
Differential pressure transducer | Dynamic |
Actual value signal | 0 – 10 V |
Order example: VMR/160/D2/B10/E0
Nominal size | 160 mm |
Accessories | Lip seals on both ends |
Differential pressure transducer | Dynamic |
Actual value signal | 0 – 10 V |
Order example: VMR/160/D2/B10/E0
Nominal size | 160 mm |
Accessories | Lip seals on both ends |
Differential pressure transducer | Dynamic |
Actual value signal | 0 – 10 V |
VMR
VMR-FL
Materials
– | Casing | Galvanised sheet steel | |
– | Sensor tubes | Aluminium | |
P1 | Casing | Galvanised sheet steel | |
A2 | Casing | Stainless steel, material no. 1.4301 |
Surfaces
– | Casing | Untreated | |
– | Sensor tubes | Untreated | |
P1 | Casing | Powder-coated, RAL 7001, silver grey | |
P1 | Sensor tubes | Powder-coated, RAL 7001, silver grey | |
A2 | Casing | Untreated | |
A2 | Sensor tubes | Powder-coated, RAL 7001, silver grey |
VMR, VARYCONTROL differential pressure transducers
Universal | ||
B10 | Universal controller with integral differential pressure transducer TROX/Belimo | Dynamic |
BB0 | Universal controller with separate differential pressure transducer TROX/Belimo | Static |
VMR, LABCONTROL differential pressure transducers
EASYLAB | ||
ELAB | EASYLAB TCU3 (recording of measured values for EASYLAB system) | Static |
Anbauteile: VARYCONTROL Regelkomponenten
Easylabregler | Statisch | |||||
Elab | RS, RE, PC, C | TCU3 | Integriert | Schnelllaufender Stellantrieb | ||
Elab | RS, PC, C | TCU3 | Integriert | Schnelllaufender Stellantrieb | ||
Elab | RE, PC, C | TCU3 | Integriert | Schnelllaufender Stellantrieb | ||
Elab | RS, RE, PC, FH, C | TCU3 | Integriert | Schnelllaufender Stellantrieb | ||
Elektronischer Regler | Statisch | Elektronischer Regler | ||||
TMA | RS, RE, PC | TCU-LON-II mit LonWorks-Schnittstelle | Integriert | Schnelllaufender Stellantrieb | ||
TMB | RS, RE, PC | TCU-LON-II mit LonWorks-Schnittstelle | Integriert | Schnelllaufender Stellantrieb (bürstenloser Motor) | ||
TMA | RS, RE, | TCU-LON-II mit LonWorks-Schnittstelle | Integriert | Schnelllaufender Stellantrieb | ||
TMB | RS, RE, | TCU-LON-II mit LonWorks-Schnittstelle | Integriert | Schnelllaufender Stellantrieb (bürstenloser Motor) | ||
TMA | RE ,PC | TCU-LON-II mit LonWorks-Schnittstelle | Integriert | Schnelllaufender Stellantrieb | ||
TMB | RE ,PC | TCU-LON-II mit LonWorks-Schnittstelle | Integriert | Schnelllaufender Stellantrieb (bürstenloser Motor) | ||
TMA | RS, RE ,PC, FH | TCU-LON-II mit LonWorks-Schnittstelle | Integriert | Schnelllaufender Stellantrieb | ||
TMB | RS, RE ,PC, FH | TCU-LON-II mit LonWorks-Schnittstelle | Integriert | Schnelllaufender Stellantrieb (bürstenloser Motor) | ||
XF3 | Δp | Integriert, 600 Pa | Federrücklaufantrieb | ③ | ||
BB3 | V | Separates Bauteil | Stellantrieb | ② |
① TROX, ② TROX/Belimo, ③ TROX/Gruner, ④ Sauter, ⑤ Siemens
☒ Bestellschlüsseldetail, V Volumenstrom, Δp Differenzdruck
VMR
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VMR kg | |
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VMR-FL
mm | mm | mm | mm | kg | ||
A bend with a curvature radius of at least 1D – without an additional straight duct section upstream of the volume flow rate measuring unit – has only a negligible effect on the volume flow rate accuracy.
Installation and commissioning
Upstream conditions
The volume flow rate accuracy ΔV 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. Some installation situations require straight duct sections upstream.
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.
Space required
Without attachments | 200 | 200 | 200 |
VARYCONTROL | |||
Universal controller | 250 | 200 | 250 |
LABCONTROL | |||
EASYLAB | 370 | 350 | 400 |
Calculation conditions
Given data
Unit data
Principal dimensions
ØD [mm]
VAV terminal units made of stainless steel: Outer diameter of the spigot
VAV terminal units made of plastic: Inside diameter of the connecting spigot
ØD₁ [mm]
Pitch circle diameter of flanges
ØD₂ [mm]
Outer diameter of flanges
ØD₄ [mm]
Inside diameter of the screw holes of flanges
L [mm]
Length of unit including connecting spigot
L₁ [mm]
Length of casing or acoustic cladding
B [mm]
Duct width
B₁ [mm]
Screw hole pitch of flange (horizontal)
B₂ [mm]
Outside dimension of flange (width)
B₃ [mm]
Width of device
H [mm]
Duct height
H₁ [mm]
Screw hole pitch of flange (vertical)
H₂ [mm]
Outside dimension of flange (height)
H₃ [mm]
Unit height
n [ ]
Number of flange screw holes
T [mm]
Flange thickness
m [kg]
Weight including attachments for the automatic differential pressure measurement
Nomenclature
Vnom [m³/h] and [l/s]
Nominal volume flow rate (100 %)
Vmin [m³/h] and [l/s]
Volume flow rate
ΔV [± %]
Volume flow rate accuracy
K value [m³/h] and [l/s]
Unit-related constant for air density 1.2 kg/m³
Δpw [Pa]
Effective pressure
Δpst [%]
Static differential pressure in relation to the measured effective pressure
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Contact
We are here for you
Please specify your message and type of request.
Tel.: +971 4 3417448 | Fax: +971 4 3417449
Contact
Thank you for your message!
Your message is send and will be processed shortly.
Our department for Service-Requests will contact you asap.
For general question regarding products or services you can also call:
Tel.: +971 4 3417448 | Fax: +971 4 3417449
Type
Material
Flange
Nominal size [mm]
Accessories
Attachments (differential pressure transducer)
Signal voltage range
