VME

Volume flow rate measuring unit VME

VME with control component BTD

Volume flow rate measuring unit VME with control component XTS/XTD

Type VME with control component XTD

Type VME with control component ELAB TCU3

Tested to VDI 6022

VME

For the measurement of volume flow rates in ducts

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

Manual volume flow rate measuring
Continuous volume flow rate measuring
Recording of measured values for other controllers or for the LABCONTROL air management system
Optional effective pressure transducer for the automatic recording of measured values, factory mounted and complete with wiring and tubing
Casing leakage to EN 1751, class B

Optional equipment and accessories

Surface powder-coated, silver grey (RAL 7001)
Dynamic or static effective pressure transducers

General information

Application

Rectangular volume flow rate measuring unit for the manual recording or automatic measuring of volume flow rates
Simplified commissioning, approval and maintenance
Optional dynamic effective pressure transducer for systems with clean air
Optional static effective pressure transducer for systems with contaminated air

Special features

Suitable for permanent installation because of low differential pressure
High accuracy of volume flow rate measurements

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 mechanical parts and an optional effective pressure transducer.
Averaging effective pressure sensor for volume flow rate measurement
Optional effective pressure transducer, factory mounted and wired
Aerodynamic functional testing on a special test rig before shipping of each unit
Set-up data is given on a label or volume flow rate scale affixed to the unit

Attachments

Dynamic effective pressure transducer (BTD, XTD)
Static effective pressure transducer (BTS, XTS)
LABCONTROL: Components for air management systems

Construction features

Rectangular casing
Flanges on both ends, suitable for duct connection
Connection points for effective pressure measuring tubes with 6 mm inside diameter

Materials and surfaces

Galvanised sheet steel construction

Casing made of galvanised sheet steel
Effective pressure sensor made of aluminium

Powder-coated construction (P1)

Casing made of galvanised sheet steel, powder-coated
Effective pressure sensor made of aluminium

Standards and guidelines

Meets 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; if B + H ≤ 400, Class B

Maintenance

Maintenance-free as construction and materials are not subject to wear

Technical information

Function, Quick sizing, Specification text, Order code

VME with attachment BTD

1: Effective pressure sensor
2: Measuring transducer
3: Casing

The volume flow rate measuring unit is fitted with an effective pressure sensor for measuring the volume flow rate. The effective pressure recorded with this sensor is either measured and evaluated manually, or transformed into an electrical signal by a measuring transducer (effective pressure transducer).

Volume flow rate ranges

Attachment: none, XTD, BTD

W	H	qv [l/s]	qv [m³/h]	K value [l/s]	K value [m³/h]	Δqv [±%]
W	H	qv [l/s]	qv [m³/h]	K value [l/s]	K value [m³/h]	Δqv [±%]
200	100	42	149	15,2	54,6	13
200	100	244	880	15,2	54,6	4
300	100	62	223	22,8	81,9	13
300	100	366	1320	22,8	81,9	4
400	100	83	298	30,3	109,2	13
400	100	489	1761	30,3	109,2	4
500	100	104	372	37,9	136,5	13
500	100	611	2201	37,9	136,5	4
600	100	124	446	45,5	163,8	13
600	100	733	2641	45,5	163,8	4
200	200	83	298	30,3	109,2	13
200	200	489	1761	30,3	109,2	4
300	200	124	446	45,5	163,8	13
300	200	733	2641	45,5	163,8	4
400	200	166	595	60,7	218,4	13
400	200	978	3521	60,7	218,4	4
500	200	207	743	75,8	273,0	13
500	200	1222	4402	75,8	273,0	4
600	200	248	892	91,0	327,6	13
600	200	1467	5282	91,0	327,6	4
700	200	289	1040	106,2	382,2	13
700	200	1711	6162	106,2	382,2	4
800	200	331	1189	121,3	436,8	13
800	200	1956	7043	121,3	436,8	4
300	300	203	730	74,5	268,2	13
300	300	1201	4325	74,5	268,2	4
400	300	271	973	99,4	357,7	12
400	300	1601	5767	99,4	357,7	4
500	300	339	1217	124,2	447,1	12
500	300	2002	7209	124,2	447,1	4
600	300	406	1460	149,0	536,5	12
600	300	2402	8650	149,0	536,5	4
700	300	474	1703	173,9	625,9	12
700	300	2803	10092	173,9	625,9	4
800	300	541	1946	198,7	715,3	12
800	300	3203	11534	198,7	715,3	4
900	300	609	2190	223,5	804,7	12
900	300	3604	12976	223,5	804,7	4
1000	300	676	2433	248,4	894,2	12
1000	300	4005	14418	248,4	894,2	4
400	400	376	1352	138,0	496,9	12
400	400	2225	8012	138,0	496,9	4
500	400	470	1690	172,5	621,1	12
500	400	2781	10015	172,5	621,1	4
600	400	564	2028	207,1	745,4	12
600	400	3338	12018	207,1	745,4	4
700	400	658	2366	241,6	869,6	12
700	400	3894	14021	241,6	869,6	4
800	400	752	2704	276,1	993,8	12
800	400	4451	16024	276,1	993,8	4
900	400	845	3042	310,6	1118,1	12
900	400	5007	18028	310,6	1118,1	4
1000	400	939	3380	345,1	1242,3	12
1000	400	5564	20031	345,1	1242,29	4
500	500	545	1959	200,0	720,1	13
500	500	3225	11611	200,0	720,1	4
600	500	654	2351	240,0	864,1	13
600	500	3870	13933	240,0	864,1	4
700	500	762	2743	280,0	1008,1	13
700	500	4515	16255	280,0	1008,1	4
800	500	871	3135	320,0	1152,1	13
800	500	5160	18577	320,0	1152,1	4
900	500	980	3526	360,1	1296,2	13
900	500	5805	20900	360,1	1296,2	4
1000	500	1089	3918	400,1	1440,2	13
1000	500	6450	23222	400,1	1440,2	4
600	600	811	2919	298,1	1073,0	12
600	600	4805	17301	298,1	1073,0	4
800	600	1082	3892	397,4	1430,6	12
800	600	6407	23068	397,4	1430,6	4
900	600	1217	4379	447,1	1609,5	12
900	600	7208	25952	447,1	1609,5	4
1000	600	1352	4865	496,8	1788,3	12
1000	600	8010	28836	496,8	1788,3	4
800	800	1502	5407	552,1	1987,6	12
800	800	8902	32049	552,1	1987,6	4
1000	800	1878	6759	690,2	2484,6	12
1000	800	11128	40062	690,2	2484,6	4
1000	1000	2404	8653	883,6	3180,8	12
1000	1000	14246	51289	883,6	3180,8	4

Note:

K values for an air density of 1.2 kg/m³ at 20 °C

Volume flow rate ranges

Attachment: XTS, BTS, ELAB

W	H	qv [l/s]	qv [m³/h]	K value [l/s]	K value [m³/h]	Δqv [±%]
W	H	qv [l/s]	qv [m³/h]	K value [l/s]	K value [m³/h]	Δqv [±%]
200	100	42	149	15,2	54,6	13
200	100	244	880	15,2	54,6	4
300	100	62	223	22,8	81,9	13
300	100	366	1320	22,8	81,9	4
400	100	83	298	30,3	109,2	13
400	100	489	1761	30,3	109,2	4
500	100	104	372	37,9	136,5	13
500	100	611	2201	37,9	136,5	4
600	100	124	446	45,5	163,8	13
600	100	733	2641	45,5	163,8	4
200	200	83	298	30,3	109,2	13
200	200	489	1761	30,3	109,2	4
300	200	124	446	45,5	163,8	13
300	200	733	2641	45,5	163,8	4
400	200	166	595	60,7	218,4	13
400	200	978	3521	60,7	218,4	4
500	200	207	743	75,8	273,0	13
500	200	1222	4402	75,8	273,0	4
600	200	248	892	91,0	327,6	13
600	200	1467	5282	91,0	327,6	4
700	200	289	1040	106,2	382,2	13
700	200	1711	6162	106,2	382,2	4
800	200	331	1189	121,3	436,8	13
800	200	1956	7043	121,3	436,8	4
300	300	203	730	74,5	268,2	12
300	300	1201	4325	74,5	268,2	4
400	300	271	973	99,4	357,7	12
400	300	1601	5767	99,4	357,7	4
500	300	339	1217	124,2	447,1	12
500	300	2002	7209	124,2	447,1	4
600	300	406	1460	149,0	536,5	12
600	300	2402	8650	149,0	536,5	4
700	300	474	1703	173,9	625,9	12
700	300	2803	10092	173,9	625,9	4
800	300	541	1946	198,7	715,3	12
800	300	3203	11534	198,7	715,3	4
900	300	609	2190	223,5	804,7	12
900	300	3604	12976	223,5	804,7	4
1000	300	676	2433	248,4	894,2	12
1000	300	4005	14418	248,4	894,2	4
400	400	376	1352	138,0	496,9	12
400	400	2225	8012	138,0	496,9	4
500	400	470	1690	172,5	621,1	12
500	400	2781	10015	172,5	621,1	4
600	400	564	2028	207,1	745,4	12
600	400	3338	12018	207,1	745,4	4
700	400	658	2366	241,6	869,6	12
700	400	3894	14021	241,6	869,6	4
800	400	752	2704	276,1	993,8	12
800	400	4451	16024	276,1	993,8	4
900	400	845	3042	310,6	1118,1	12
900	400	5007	18028	310,6	1118,1	4
1000	400	939	3380	345,1	1242,3	12
1000	400	5564	20031	345,1	1242,3	4
500	500	545	1959	200,0	720,1	13
500	500	3225	11611	200,0	720,1	4
600	500	654	2351	240,0	864,1	13
600	500	3870	13933	240,0	864,1	4
700	500	2013	7247	280,0	1008,1	13
700	500	4515	16255	280,0	1008,1	4
800	500	871	3135	320,0	1152,1	13
800	500	5160	18577	320,0	1152,1	4
900	500	980	3526	360,1	1296,2	13
900	500	5805	20900	360,1	1296,2	4
1000	500	1089	3918	400,1	1440,2	13
1000	500	6450	23222	400,1	1440,2	4
600	600	811	2919	298,1	1073,0	12
600	600	4805	17301	298,1	1073,0	4
800	600	1082	3892	397,4	1430,6	12
800	600	6407	23068	397,4	1430,6	4
900	600	1217	4379	447,1	1609,5	12
900	600	7208	25952	447,1	1609,5	4
1000	600	1352	4865	496,8	1788,3	12
1000	600	8010	28836	496,8	1788,3	4
800	800	1502	5407	552,1	1987,6	12
800	800	8902	32049	552,1	1987,6	4
1000	800	1878	6759	690,2	2484,6	12
1000	800	11128	40062	690,2	2484,6	4
1000	1000	2404	8653	883,6	3180,8	12
1000	1000	14246	51289	883,56	3180,8	4

Note:

K values for an air density of 1.2 kg/m³ at 20 °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 continuous 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). Meets the hygiene requirements of EN 16798, Part 3, VDI 6022, Sheet 1, and DIN 1946, Part 4.

Special features

Suitable for permanent installation because of low differential pressure
High accuracy of volume flow rate measurements

Materials and surfaces

Galvanised sheet steel construction

Casing made of galvanised sheet steel
Effective pressure sensor made of aluminium

Powder-coated construction (P1)

Casing made of galvanised sheet steel
Surface powder-coated, silver grey (RAL 7001)
Effective pressure sensor made of aluminium

Connection

Flanges on both ends, suitable for duct connection

Technical data

Nominal sizes: 200 × 100 to 1000 × 1000 mm
Volume flow rate range: 42 – 14246 l/s or 149 – 51289 m³/h
Effective pressure range: Approx. 2 – 260 Pa
Operating temperature: 10 to 50 °C
Casing leakage to EN 15727, Class C; if B + H ≤ 400, Class B)

VME	–	P1	/	600 × 400	/	XTD	/	0
\|		\|		\|		\|		\|
1		2		3		4		5

1 Type

VME Volume flow rate measuring unit, rectangular

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

3 Nominal size [mm]
B × H

4 Attachments (effective pressure transducer)
No entry: none
XTD Dynamic effective pressure transducer, analogue, display
BTD Dynamic effective pressure transducer, analogue, MP bus, Modbus RTU, BACnet MS/TP
XTS Static effective pressure transducer, analogue, display
BTS Static effective pressure transducer, analogue, MP bus, Modbus RTU, BACnet MS/TP

5 Signal voltage range
Only required if an attachment has been selected
For the actual value signal
0 0 – 10 V DC
2 2 – 10 V DC

Order example 1: VME-P1/400×400/XTS/0

Material	Powder-coated RAL 7001, silver grey
Nominal size	400 × 400
Attachments (effective pressure transducer)	Static effective pressure transducer with display
Actual value signal	0 – 10 V DC

,CODEX

VME

–

600x400

ELAB

–

UMZ

1 Type
VME Volume flow rate measuring unit, rectangular

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

3 Nominal size [mm]
B × H

4 Attachment (effective pressure transducer)
ELAB EASYLAB TCU3

5 Equipment function
SC Supply air recording
EC Extract air recording

6 Voltage range for the actual value signal
E0 Voltage signal 0 – 10 V DC
E2 Voltage signal 2 – 10 V DC

7 Expansion modules
Option 1: Power supply
No entry: 24 V AC
T EM-TRF for 230 V AC
U EM-TRF-USV for 230 V AC, provides uninterruptible power supply (UPS)

Option 2: Communication interface
No entry: none
B EM-BAC-MOD-01 for BACnet MS/TP
M EM-BAC-MOD-01 for Modbus RTU
I EM-IP: EM-IP for BACnet/IP, Modbus/IP and web server
R EM-IP with real time clock

Option 3: Automatic zero point correction
No entry: noneZ EM-AUTOZERO Solenoid valve for automatic zero point correction

Order example 1: VME/200×200/ELAB/EC/E2/TZ

Material	Powder-coated RAL 7001, silver grey
Nominal size	200 mm
Attachments	EASYLAB TCU3
Equipment function	Extract air recording
Voltage range for the actual value signal	Voltage signal 2 – 10 V DC
Expansion module	With expansion module EM-TRF, transformer for 230 V AC supply, with expansion module EM-AUTOZERO, solenoid valve for automatic zero point correction

Variants, Dimensions and weight, Product details, Optional attachments

Volume flow rate measuring unit VME without attachment

VME

Note:

The drawing of the attachment (differential pressure transducer) is only to give you a rough idea. For more realistic examples see

the Variants section. For exact dimensions see the section 'Space required for commissioning and maintenance'.

Dimensions/weight of VME

NS (B × H)	B₁	B₂	H₁	H₂	kg
200 × 100	234	276	134	176	6
200 × 200	234	276	234	276	9
300 × 100	334	376	134	176	7
300 × 200	334	376	234	276	10
300 × 300	334	376	334	376	10
400 × 100	434	476	134	176	8
400 × 200	434	476	234	276	11
400 × 300	434	476	334	376	11
400 × 400	434	476	434	476	14
500 × 100	534	576	134	176	9
500 × 200	534	576	234	276	12
500 × 300	534	576	334	376	12
500 × 400	534	576	434	476	15
500 × 500	534	576	534	576	19
600 × 100	634	676	134	176	10
600 × 200	634	676	234	276	13
600 × 300	634	676	334	376	13
600 × 400	634	676	434	476	16
600 × 500	634	676	534	576	20
600 × 600	634	676	634	676	19
700 × 200	734	776	234	276	14
700 × 300	734	776	334	376	15
700 × 400	734	776	434	476	17
700 × 500	734	776	534	576	22
800 × 200	834	876	234	276	15
800 × 300	834	876	334	376	16
800 × 400	834	876	434	476	18
800 × 500	834	876	534	576	23
800 × 600	834	876	634	676	23
800 × 800	834	876	834	876	28
900 × 300	934	976	334	376	18
900 × 400	934	976	434	476	21
900 × 500	934	976	534	576	25
1000 × 300	1034	1076	334	376	19
1000 × 400	1034	1076	434	476	20
1000 × 500	1034	1076	534	576	26
1000 × 600	1034	1076	634	676	27
1000 × 800	1034	1076	834	876	32
1000 × 1000	1034	1076	1034	1076	38

Bend, vertical

A bend – with a straight duct section of at least 4H upstream of the measuring unit – has only a negligible effect on the volume flow rate accuracy.

Volume flow rate calculation for air density 1.2 kg/m³

Volume flow rate calculation for other air densities

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
Δpw = 100 Pa (manometer reading of effective pressure)
Volume flow rate qv in m³/h

Unit data

K value from table: K =218 m3/h (60.5 l/s)

Installation and commissioning

The installation orientation of ELAB must be as shown on the sticker
The installation orientation of XTD/XTS or BTD/BTS is not critical

Upstream conditions

The volume flow rate accuracy Δq_ᵥ 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.

Optional attachments for effective pressure transducers

Attachment	Interface	Effective pressure transducer	Manufacturer
Effective pressure transducer, dynamic
XTD	0 – 10 V or 2 – 10 V	integral	①
BTD	0 - 10 V or 2 - 10 V or MP bus or Modbus RTU or BACnet MS/TPTP	integral	②
Effective pressure transducer, static
XTS	0 – 10 V or 2 – 10 V	integral	①
BTS	0 - 10 V or 2 - 10 V or MP bus or Modbus RTU or BACnet MS/TPTP	integral	②
ELAB	TROX plug and play communication system and 0 - 10 V or 2 - 10 V or with optional accessories: Modbus, BACnet, web server	integral	③

① TROX/Gruner, ② TROX/Belimo, ③ TROX

Attachments

Access to attachments

Schematic illustration of required installation space

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 required

Attachment	①	②	③
Effective pressure transducer: BTD and BTS	250	H	250
Effective pressure transducer: XTD and XTS	520	H	250
Effective pressure transducer: ELAB TCU3	550	H *	250

H: Unit height
H*: Unit height or at least 350

Downloads

product information

Print page VME
Product data sheet Type VME

Product data sheet Type VME 700 KB pdf

certificates

Certificate Statement Type VME

Certificate 130 KB pdf
Declaration of hygiene conformity VME

VME_HC_2021_07_20_DE_en Certifikcate 680 KB pdf
Declaration of incorporation

Declaration of incorporation 66 KB pdf
Non-CE Manufacturer's statement VME

VME_NotCE_2022_02_08_14_43_58_DE_en Certificate 1.2 MB pdf

operation manuals

Control component Easy for VAV terminal units

Installation and commissioning instructions 1.5 MB pdf

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For the measurement of volume flow rates in ducts

General information

Technical information

Function, Quick sizing, Specification text, Order code

Variants, Dimensions and weight, Product details, Optional attachments

Attachments

Downloads

product information

Print page VME

Product data sheet Type VME

certificates

Certificate Statement Type VME

Declaration of hygiene conformity VME

Declaration of incorporation

Non-CE Manufacturer's statement VME

operation manuals

Control component Easy for VAV terminal units

TROX Services

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STATISTICS AND WEBSITE ANALYSIS

CONVENIENCE AND PERSONALISATION

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