VMR_img_09psd.png
VMR-125-XTD

Type VMR with control component XTD

VMR_img_08psd.png

VMR with control component BTD

VMR-ELAB_gc_01psd.png

Type VMR with control component ELAB TCU3

VDI6022_gs_01ai.png
Tested to VDI 6022

Tested to VDI 6022

VMR_img_09psd.png
VMR_img_08psd.png
VMR-ELAB_gc_01psd.png
VDI6022_gs_01ai.png

VMR  

For the measurement of volume flow rates in ducts


Circular volume flow rate measuring device for recording or monitoring the volume flow rate

  • Manual volume flow rate measuring
  • Permanent volume flow rate measuring
  • Recording of measured values for other controllers or for the LABCONTROL air management system
  • Effective pressure transducer for the automatic recording of measured values, factory assembled
  • With wiring and tubing
  • Casing leakage according to EN 15727, Class C

 

Optional equipment and accessories

  • With flanges on both ends
  • Lip seal
  • Dynamic or static effective pressure transducer

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General Information

Application

  • Circular volume flow rate measuring units for the manual or automatic measuring of volume flow rates
  • Simplified commissioning, approval and maintenance
  • Suitable for permanent installation because of low differential pressure
  • Optional static effective pressure transducer for systems with contaminated air


Special features

  • Suitable for permanent installation because of low differential pressure
  • High measurement accuracy (even with upstream bend R = 1D)


Nominal sizes

  • 100, 125, 160, 200, 250, 315, 400 mm


Variants

  • VMR: Volume flow rate measuring unit
  • VMR-FL: Volume flow rate measuring unit with flanges on both ends


 Construction

  • Galvanised sheet steel
  • P1: Powder-coated, silver grey (RAL 7001)
  • A2: Stainless steel



Parts and characteristics

  • Ready-to-commission unit which consists of the mechanical parts and optional effective pressure transducers
  • Averaging differential pressure sensor for volume flow rate measurement
  • Optional effective pressure transducers, factory-assembled and wired
  • High measurement accuracy of volume flow rates (even with bend R = 1D).



Attachments

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



Accessories

  • G2: Matching flanges for both ends
  • D2: Double lip seals on both ends (factory fitted)



Construction features

  • Circular casing
  • Spigot suitable for circular ducts to EN 1506 or EN 13180
  • Spigots with groove for seal
  • TVR-FL: Flanges to EN 12220



Materials and surfaces

Galvanised sheet steel construction

  • Casing and damper blade made of galvanised sheet steel
  • Aluminium sensor tubes


Powder-coated construction (P1)

  • Casing made of galvanised sheet steel, powder-coated
  • Sensor tubes made of aluminium, powder-coated


Stainless steel construction (A2)

  • Casing, damper blade and shaft made of stainless steel 1.4301
  • Sensor tubes made of aluminium, powder-coated



Standards and guidelines

Fulfils the hygiene requirements of

  • EN 16798, Part 3
  • VDI 6022, Sheet 1
  • DIN 1946, Part 4
  • Further standards, guidelines in accordance with hygiene certificate

Casing leakage

  • EN 1751, Class C


Maintenance

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


Description

Variants

  • VMR: Volume flow rate measuring unit
  • VMR-FL: Volume flow rate measuring unit with flanges on both ends



Parts and characteristics

  • Ready-to-commission unit which consists of the mechanical parts and optional effective pressure transducers
  • Averaging differential pressure sensor for volume flow rate measurement
  • Optional effective pressure transducers, factory-assembled and wired
  • High measurement accuracy of volume flow rates (even with bend R = 1D).



Attachments

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






Nominal sizes

  • 100, 125, 160, 200, 250, 315, 400 mm



Technical information

Function, Technical data, Quick sizing, Specification text, Order code

  • Function
  • TECHNICAL DATA
  • QUICK SIZING
  • SPECIFICATION TEXT
  • ORDER CODE
VMR with control component XTS VMR-XTS_gc_01ai.png

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 is either measured and evaluated manually, or transformed into an electric signal by a measuring transducer (effective pressure transducer).


Nominal sizes100 – 400 mm
Volume flow rate range

34 – 6279 m³/h bzw. 10 – 1744 l/s

Maximum differential pressure

1000 Pa

Effective pressure range

Approx. 2 – 260 Pa *

Measurement accuracy

5 – 16 %

Operating temperature10 to 50 °C

* 260 Pa of the nominal volume flow rate

Volume flow rate ranges and minimum differential pressure values
Attachment: Without attachment, XTD, BTD

NSqv [l/s]qv [m³/h]C-value [l/s]C-value [m³/h]Δqv [±%]
10010346,122,016
100983546,122,06
125165510,035,916
12516057810,035,96
160258816,057,616
16025792816,057,66
2004014326,193,816
200420151226,193,86
2506021639,5142,216
250636229239,5142,26
31510035965,6236,216
3151057380765,6236,26
400165591108,2389,516
40017446279108,18389,55
Note: 
  • K values for air density 1.2 kg/m³ at 20 °C

 

Volume flow rate ranges and minimum differential pressure values
Attachment: XTS, BTS, ELAB

NSqv [l/s]qv [m³/h]C-value [l/s]C-value [m³/h]Δqv [±%]
10014506,122,014
100983546,122,06
12523819,935,913
1251605789,935,96
1603612916,057,614
16025792816,057,66
2005921026,193,813
200420151226,193,86
2508931839,5142,214
250636229239,5142,26
31514752965,6236,213
3151057380765,6236,26
400242871108,2389,513
40017446279108,2389,55
Note:
  • K values for air density 1.2 kg/m³ at 20 °C

Specification text

Circular volume flow rate measuring unit for the measurement of volume flow rates in ventilation and air conditioning systems, available in 7 nominal sizes. For manual volume flow rate measurement 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, hence resistant to contamination.


Special features

  • Suitable for permanent installation because of low differential pressure
  • High measurement accuracy (even with upstream bend R = 1D)

Materials and surfaces

Galvanised sheet steel construction

  • Casing made of galvanised sheet steel
  • Aluminium sensor tubes

P1: Powder-coated construction (P1)

  • Casing made of galvanised sheet steel, surface powder coated, silver (RAL 7001)
  • Sensor tubes made of aluminium, powder-coated

A2: Stainless steel construction (A2)

  • Casing made of stainless steel 1.4301
  • Sensor tubes made of aluminium, powder-coated


Connection

Spigot with groove for lip seal, 
suitable for ducts to EN 1506 or EN 13180

  • FL: Flanges on both ends according to EN 12220

Technical data

  • Nominal sizes: 100 to 400 mm
  • Volume flow rate range: 34 – 6279 m³/h or 10 – 1744 l/s
  • Effective pressure range: approx. 2 – 260 Pa
  • Measurement accuracy: 5 – 16 %
  • Operating temperature: 10 to 50 °C   
  • Casing air leakage to EN 1751, Class C

VMRP1FL / 160 / G2 / BTD / 0
|||||||
1234567
1 Type
VMR Circular volume flow rate measuring unit
 
2 Material
No entry required: Galvanised sheet steel
P1 Powder-coated RAL 7001, silver grey
A2 Stainless steel construction
 
3 Flange
No entry required: None
FL Flanges on both ends
 
4 Nominal size [mm]
100, 125, 160, 200, 250, 315, 400
 
5 Accessories
No entry required: None
D2 Lip seals on both ends
G2 Matching flanges both sides
 
6 Attachments (effective pressure transducer)
No entry required: None
XTD dynamic effective pressure transducer, analogue, display
BTD dynamic effective pressure transmitter, analogue, and MP-Bus, Modbus RTU, BACnet MS/TP
XTS static effective pressure transducer, analogue, display
BTS static effective pressure transmitter, analogue, and MP-Bus, Modbus RTU, BACnet MS/TP
 
7 Signal voltage range
Only required if attachment is selected
For the actual value signal
0 0 – 10 V DC
2 2 – 10 V DC

Order example 1: VMR-P1-FL/315/G2/XTS/0
MaterialPowder-coated, RAL 7001, silver grey
Duct connectionFlanges on both ends
Nominal size315 mm
AccessoriesMatching flanges on both ends
Attachments (effective pressure transducer)Static effective pressure transducer with display
Signal voltage range Actual value signal0 – 10 V DC


VMRP1FL/160/G2/ELAB/ECE0/UMZ
| | | | | | | | |
1 2 3 4 5 6 7 8 9

1 TypeVMR Circular volume flow rate measuring unit 2 MaterialNo entry: galvanised sheet steelP1 Powder-coated surface RAL 7001, silver grey (RAL 7001)A2 Stainless steel construction 3 FlangeNo entry required: NoneFL Flanges on both ends 4 Nominal size [mm]100
125
160
200
250
315
400
 5 AccessoriesNo entry required: NoneD2 Lip seals on both endsG2 Matching flanges both sides 6 Attachments (effective pressure transducer)ELAB EASYLAB TCU3 7 Equipment functionSC Supply air recordingEC Extract air recording 8 Voltage range for the actual value signalE0 Voltage signal 0 – 10 V DCE2 Voltage signal 2 – 10 V DC 9 Expansion modulesOption 1: Power supplyNo entry: 24 V ACT EM-TRF for 230 V ACU EM-TRF-USV for 230 V AC, provides uninterruptible power supply (UPS) Option 2: Communication interfaceNo entry required: NoneB EM-BAC-MOD-01 for BACnet MS/TPM EM-BAC-MOD-01 for Modbus RTUI EM-IP for BACnet/IP, Modbus/IP and web serverR EM-IP with real time clock Option 3: Automatic zero point correctionNo entry required: NoneZ EM-AUTOZERO Solenoid valve for automatic zero point correction


Order example 1: VMR-P1-FL/200/ELAB/EC/E2/TZ
MaterialPowder-coated, RAL 7001, silver grey 
Nominal size200 mm
Attachments EASYLAB TCU3
Equipment functionExtract air controller
external volume flow rate settingVoltage signal 2 – 10 V DC
Expansion moduleWith 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

  • VARIANTS
  • DIMENSIONS AND WEIGHT
  • PRODUCT DETAILS

Material

Standard construction
Order code detail Part Material

-

Effective pressure sensor Aluminium tube

-

Casing

Galvanised sheet steel


Powder-coated construction
Order code detail Part Material

P1

Effective pressure sensor Aluminium - powder coated, RAL 7001, silver grey

P1

Casing Galvanised sheet steel - powder coated, RAL 7001, silver grey


Stainless steel construction
Order code detail Part Material

A2

Effective pressure sensor Aluminium - powder coated, RAL 7001, silver grey

A2

Casing

Stainless steel, material no. 1.4301


Option double lip seal
Order code detail Part Material

D2

Double lip seal

Rubber, EPDM

Dimensions/weights for VMR (standard)

NS ∅D kg
100 99 0.8
125 124 1
160 159 1.2
200 199 1.6
250 249 1.9
315 314 2.4
400 399 3.1
Note:
Weight value only for VMR without attachment.
Note possible additional weights due to optional effective pressure transducers (BTD, XTD, BTS, XTS, ELAB attachments) depending on the construction.



Dimensions/weights for VMR-FL

NS ∅D ∅D₁ ∅D₂ D n kg
100 99 132 152 4 4 1.2
125 124 157 177 4 4 1.5
160 159 192 212 4 6 2.1
200 199 233 253 4 6 2.7
250 249 283 303 4 6 3.3
315 314 352 378 4 8 4.5
400 399 438 464 4 8 5.7
Note:
Weight value only for VMR-FL without attachment.
Note possible additional weights due to optional effective pressure transducers (BTD, XTD, BTS, XTS, ELAB attachments) depending on the construction. Note: Tolerances for dimensions L: ±5 mm


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.

The selected product illustrations do not contain information on possible installation situations. Some attachments require a certain installation orientation; this is specified on the product's installation orientation label.

Space required

Attachment

Effective pressure transducer: XTD, XTS

250 200 250

Effective pressure transducer: BTD, BTS

520 250 250

Effective pressure transducer: ELAB

550 350 400

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 


Required 
  • VMR/160 
  • Δpw = 100 Pa (manometer reading of effective pressure) 
  • Volume flow rate qv in m³/h Device data K value from table: K = 58 m3 /h (16.11 l/s)

Installation and commissioning
  • The installation orientation of ELAB must be as shown on the sticker
  • Installation orientation of XTD/XTS and BTD/BTS attachments not critical

Upstream conditions
The volume flow rate accuracy Δqv applies for a straight upstream flow. 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.


Installation component

Attachment Interface Effective pressure transducer Manufacturer
Effective pressure transducer, dynamic
XTD 0 – 10 V or 2 – 10 V integral
BTD 0 - 10 V or 2 - 10 V or MP bus or Modbus RTU or BACnet MS/TP integral
Effective pressure transducer, static
XTS 0 – 10 V or 2 – 10 V integral
BTS 0 - 10 V or 2 - 10 V or MP bus or Modbus RTU or BACnet MS/TP integral
ELAB

TROX plug and play communication system and 0 - 10 V or 2 - 10 V or with optional accessories: Modbus, BACnet, web server

integral

① TROX/Gruner, ② TROX/Belimo, ③ TROX





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For general question regarding products or services you can also call:
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