Type VMRK

For the measurement of volume flow rates in ducts with contaminated air

Plastic 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 made of flame-resistant polypropylene (PPs)
  • Casing air leakage to EN 15727, class C


Optional equipment and accessories

  • With flanges on both ends

Volume flow rate measuring unit, variant VMRK-FL 00136341_0
  • Application
  • Description

Application

  • Plastic circular volume flow rate measuring units Type VMRK for the manual or automatic measuring of volume flow rates
  • Suitable for contaminated air
  • 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. 5 – 250 Pa
  • Low differential pressure of only about  15 – 24 % of the measured effective pressure

Variants

  • VMRK: Volume flow rate measuring unit
  • VMRK-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 an optional pressure transducer
  • Averaging differential pressure sensor for volume flow rate measurement; can be removed for cleaning
  • Optional factory-assembled pressure transducers complete with wiring and tubing
  • High measurement accuracy (even with upstream bend R = 1D).

Attachments

  • Static differential pressure transducer
  • LABCONTROL components for air management systems

Accessories

  • Matching flanges for both ends

Construction features

  • Circular casing
  • Spigot suitable for ducts according to DIN 8077
  • Connecting nipple for tubes with 6 mm inside diameter

Materials and surfaces

  • Casing made of flame-resistant polypropylene (PPs)
  • Differential pressure sensor made of polypropylene (PP)

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 sizes125 – 400 mm
Volume flow rate range25 – 1680 l/s or 90 – 6048 m³/h
Measurement accuracy± 5 % of the measured value
Effective pressure rangeapprox. 5 – 250 Pa
Measuring unit differential pressure (pressure loss)15 – 24 % of the measured effective pressure
Operating temperature10 – 50 °C


Plastic (PPs) circular volume flow rate measuring unit for the measurement of volume flow rates in air conditioning systems, available in 6 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.

Spigot, suitable for ducts according to DIN 8077.

Casing air leakage to EN 15727, class C.

Special features

  • Measurement accuracy ± 5 % even with unfavourable upstream conditions
  • Effective pressure range: approx. 5 – 250 Pa
  • Low differential pressure of only about  15 – 24 % of the measured effective pressure

Materials and surfaces

  • Casing made of flame-resistant polypropylene (PPs)
  • Differential pressure sensor made of polypropylene (PP)

Technical data

  • Nominal sizes: 125 – 400 mm
  • Volume flow rate range: 25 to 1680 l/s or 90 to 6048 m³/h
  • Effective pressure range: approx. 5 – 250 Pa
  • Measuring unit differential pressure (pressure loss): 15 – 24 % 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)

00137385_0

 Type
VMRK       Volume flow rate measuring unit, plastic

 Flange
       No entry: none
FL       Flanges on both ends

 

Nominal size [mm]
125
160
200
250
315
400

 Accessories
       No entry: none
GK       Matching flanges for both ends

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

 

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Contact

Thank you for your message!

Visual contact Visual contact

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