Type VMR

For the measurement of volume flow rates in ducts

Circular 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
  • Pressure transducer for the automatic recording of measured values, factory assembled and complete with wiring and tubing
  • Casing air leakage to EN 15727, class C


Optional equipment and accessories

  • With flanges on both ends
  • Lip seal
  • Dynamic or static differential pressure transducers

Volume flow rate measuring unit, variant VMR/.../BB0 00181176_0
  • Application
  • Description

Application

  • Circular volume flow rate measuring units Type VMR 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
  • Optional static differential pressure transducer for systems with polluted air

Special characteristics

  • Measurement accuracy ± 5 %
  • Low differential pressure of only about  10 – 26 % of the measured effective pressure

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 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 (even with upstream bend R = 1D).

Attachments

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

Accessories

  • Lip seals on both ends (factory fitted)
  • Matching flanges for both ends

Construction features

  • Circular casing
  • Spigot suitable for circular ducts to EN 1506 or EN 13180
  • Spigot with groove for lip seal
  • Connecting nipple for tubes with 6 mm inside diameter
  • VMR-FL: Circular flanges to EN 12220

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
  • 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

Technical information

  • Function
  • Technical data
  • Specification text
  • Order code

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 sizes100 – 400 mm
Volume flow rate range10 – 1680 l/s or 36 – 6048 m³/h
Measurement accuracy ± 5 % of the measured value
Effective pressure rangeapprox. 5 – 250 Pa
Measuring unit differential pressure (pressure loss)10 – 26 % of the measured effective pressure
Operating temperature10 – 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

  • Measurement accuracy ± 5 %
  • Low differential pressure of only about  10 – 26 % 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
  • 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

Construction

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

Technical data

  • Nominal sizes: 100 to 400 mm
  • Volume flow rate range: 10 to 1680 l/s or 36 to 6048 m³/h
  • Effective pressure range: approx. 5 – 250 Pa
  • Measuring unit differential pressure (pressure loss): 10 – 26 % 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
  • TCU-LON-II: Integration with LonWorks
  • EASYLAB: Integration using either 0 – 10 V DC signals or expansion modules (LonWorks, BACnet MS/TP, Modbus RTU)

00184027_0

 Type
VMR       Circular volume flow rate measuring unit

 Material
       No entry: galvanised sheet steel
P1       Powder-coated (RAL 7001), silver grey
A2       Stainless steel

 Flange
       No entry: none
FL       Flanges on both ends

 

 Nominal size [mm]
100
125
160
200
250
315
400

 Accessories
       No entry: none
D2       Lip seals on both ends
G2       Matching flanges for both ends

 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

 

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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.: +43 1 250 43-0| Fax: +43 1 250 43 34