Type VME

For the measurement of volume flow rates in ducts

Rectangular volume flow rate measuring units for the recording or monitoring of volume flow rates

Manual volume flow rate measuring
Permanent volume flow rate measuring
Recording of measured values for other controllers or for the LABCONTROL air management system
Suitable for airflow velocities of up to 10 m/s
Pressure transducer for the automatic recording of measured values, factory assembled and complete with wiring and tubing
Casing air leakage to EN 15727, up to class C

Volume flow rate measuring unit, variant VME, with differential pressure transducer 00137028_0

Dynamischer Differenzdrucktransmitter

Application

Rectangular volume flow rate measuring units Type VME for the manual recording or automatic measuring of volume flow rates
Simplified commissioning, approval and maintenance
Suitable for permanent installation because of low differential pressure

Special features

Measurement accuracy ± 5 % even with unfavourable upstream conditions
Effective pressure range: approx. 8 – 200 Pa
Low differential pressure of only about 17 – 32 % of the measured effective pressure

Nominal sizes

39 nominal sizes from 200 × 100 to 1000 × 1000

Construction

Galvanised sheet steel
P1: Powder-coated, silver grey (RAL 7001)

Parts and characteristics

Ready-to-commission unit which consists of the mechanical parts and an optional pressure transducer
Averaging differential pressure sensor for volume flow rate measurement
Optional factory-assembled pressure transducers complete with wiring and tubing
High measurement accuracy

Attachments

Dynamic differential pressure transducer
Static differential pressure transducer
LABCONTROL: Components for air management systems

Construction features

Rectangular casing
Flanges on both sides, suitable for duct connection
Connecting nipple for tubes with 6 mm inside diameter

Materials and surfaces

Galvanised sheet steel construction

Casing made of galvanised sheet steel
Aluminium sensor tubes

Powder-coated construction (P1)

Casing made of galvanised sheet steel, powder-coated

Standards and guidelines

Casing air leakage to EN 15727, class C (B + H) ≤ 400, class B)

Maintenance

Maintenance-free as construction and materials are not subject to wear
Zero point correction of the static differential pressure transducer should be carried out once per year (recommendation)

Information technique

Function, Technical data, Specification text, Order code, Produktbeziehungen

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	200 x 100 – 1000 x 1000
Volume flow rate range	45 – 10100 l/s or 162 – 36360 m³/h
Measurement accuracy	± 5 % of the measured value
Effective pressure range	Approx. 5 – 250 Pa
Measuring unit differential pressure (pressure loss)	17 – 32 % of the measured effective pressure
Operating temperature	10 – 50 °C

Rectangular volume flow rate measuring unit for the measurement of volume flow rates in air conditioning systems, available in 39 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 (resistant to dust and pollution)

Both ends suitable for the connection of air duct profiles.

Casing air leakage to EN 15727, class B.

Special features

Measurement accuracy ± 5 % even with unfavourable upstream conditions
Effective pressure range: approx. 8 – 200 Pa
Low differential pressure of only about 17 – 32 % of the measured effective pressure

Materials and surfaces

Galvanised sheet steel construction

Casing made of galvanised sheet steel
Aluminium sensor tubes

Powder-coated construction (P1)

Casing made of galvanised sheet steel, powder-coated

Construction

Galvanised sheet steel
P1: Powder-coated, silver grey (RAL 7001)

Technical data

Nominal sizes: 200 × 100 to 1000 × 1000
Volume flow rate range: 45 to 10100 l/s or 162 to 36360 m³/h
Effective pressure range: approx. 5 – 250 Pa
Measuring unit differential pressure (pressure loss): 17 – 32 % of the measured effective pressure
Operating temperature: 10 to 50 °C

Attachments

Volume flow rate measurement with static differential pressure transducer emitting an actual value signal for integration into the central BMS.

Supply voltage 24 V AC/DC
Signal voltages 0 – 10 V DC or 2 – 10 V DC
EASYLAB: Integration using either 0 – 10 V DC signals or expansion modules (LonWorks, BACnet MS/TP, Modbus RTU)

Sizing data

V _______________________ [m³/h]

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

Type
VME Rectangular volume flow rate measuring unit

Material
No entry: galvanised sheet steel
P1 Powder-coated (RAL 7001), silver grey

Nominal size [mm]
B × H

Attachments (differential pressure transducer)
       No entry: none
B10       Dynamic differential pressure transducer
BB0       Static differential pressure transducer

Signal voltage range
       For the actual value signal
       Only for attachment B10
E0       0 – 10 V
E2       2 – 10 V

Order example: VME/600×400/B10/E0

Nominal size	600 × 400 mm
Differential pressure transducer	Dynamic
Actual value signal	0 – 10 V

Order example: VME/600×400/B10/E0

Nominal size	600 × 400 mm
Differential pressure transducer	Dynamic
Actual value signal	0 – 10 V

Variants, Attachments, Dimensions and weight, Product details

Volume flow rate measuring unit, variant VME

VME, VARYCONTROL differential pressure transducers

Order code detail	Differential pressure transducer	Measurement principle
Universal
B10	Universal controller with integral differential pressure transducer TROX/Belimo	Dynamic
BB0	Universal controller with separate differential pressure transducer TROX/Belimo	Static

VME, LABCONTROL differential pressure transducers

Order code detail	Differential pressure transducer	Measurement principle
EASYLAB
ELAB	EASYLAB TCU3 (recording of measured values for EASYLAB system)	Static

Anbauteile: VARYCONTROL Regelkomponenten

☒	Regel- größe	Schnittstelle	V_min -/ V_max - Verstellung	Differenzdruck- transmitter	Stellantrieb	Fabrikat
		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

VME

VME

Nominal size	Nominal width mm B_N	Nominal height mm H_N	B₁ mm	B₂ mm	H₁ mm	H₂ mm	m kg
200 × 100	200	100	234	276	134	176	5.0
300 × 100	300	100	334	376	134	176	6.0
400 × 100	400	100	434	476	134	176	7.0
500 × 100	500	100	534	576	134	176	8.0
600 × 100	600	100	634	676	134	176	10.0
200 × 200	200	200	234	276	234	276	6.0
300 × 200	300	200	334	376	234	276	7.0
400 × 200	400	200	434	476	234	276	8.5
500 × 200	500	200	534	576	234	276	10.0
600 × 200	600	200	634	676	234	276	11.0
700 × 200	700	200	734	776	234	276	12.5
800 × 200	800	200	834	876	234	276	13.5
300 × 300	300	300	334	376	334	376	8.0
400 × 300	400	300	434	476	334	376	9.5
500 × 300	500	300	534	576	334	376	11.0
600 × 300	600	300	634	676	334	376	12.0
700 × 300	700	300	734	776	334	376	13.5
800 × 300	800	300	834	876	334	376	14.5
900 × 300	900	300	934	976	334	376	16.0
1000 × 300	1000	300	1034	1076	334	376	17.0
400 × 400	400	400	434	476	434	476	10.5
500 × 400	500	400	534	576	434	476	11.5
600 × 400	600	400	634	676	434	476	13.0
700 × 400	700	400	734	776	434	476	14.5
800 × 400	800	400	834	876	434	476	15.5
900 × 400	900	400	934	976	434	476	17.0
1000 × 400	1000	400	1034	1076	434	476	18.0
500 × 500	500	500	534	576	534	576	14.0
600 × 500	600	500	634	676	534	576	16.0
700 × 500	700	500	734	776	534	576	17.5
800 × 500	800	500	834	876	534	576	19.5
900 × 500	900	500	934	976	534	576	23.0
1000 × 500	1000	500	1034	1076	534	576	20.5
600 × 600	600	600	634	676	634	676	17.0
800 × 600	800	600	834	876	634	676	20.0
1000 × 600	1000	600	1034	1076	634	676	23.0
800 × 800	800	800	834	876	834	876	22.0
1000 × 800	1000	800	1034	1076	834	876	25.0
1000 × 1000	1000	1000	1034	1076	1034	1076	27.0

Detail of flange 00135868_0

① Flange
② Compressible seal, to be provided by others

Installation details, Commissioning, Basic information and nomenclature

Bend, vertical

A bend – with a straight duct section of at least 2H upstream of the volume flow rate measuring unit – has only a negligible effect on the volume flow rate accuracy.

Installation and commissioning

Any installation orientation (except units with static differential pressure transducer)
Note the upstream and downstream conditions
Static differential pressure transducer: Check zero point and correct, if necessary

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

Attachments	①	②	③
Attachments	mm
Without attachments	200	H	200
VARYCONTROL
Universal controller	300	H	300
LABCONTROL
EASYLAB	500	H	400

H: Unit height

Volume flow rate calculation for air density 1.2 kg/m³

Calculation conditions

The volume flow rate is calculated based on the measured effective pressure.
The effective pressure is measured using an electronic manometer or an inclined tube manometer
Air density ρ = 1.2 kg/m³

Given data

VME/400 × 200
Δp_w = 100 Pa (manometer reading of effective pressure)
Volume flow rate V [m³/h]

Unit data

K value from table: K = 216 m³/h (60 l/s)

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

V_nom [m³/h] and [l/s]

Nominal volume flow rate (100 %)

V_min [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

Δp_w [Pa]

Effective pressure

Δp_st [%]

Static differential pressure in relation to the measured effective pressure

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