Ultrasonic volume measuring device

ULTRAFLOW® 54

Ultraschall Waermezaehler Volumenmessteile statisch Ultraflow54

Product categories

Heat / Cooling

Durable, wear-free ultrasonic volume measuring device. Especially suitable for district heating/cooling applications (main meters, transfer stations, etc.) in billing transactions.

Heat / Cooling

Ultrasonic

Smart City

Smart Building

Your benefits

  • Durable, wear-free ultrasonic volume measuring device:
    High measurement stability and operational reliability
  • Compact design:
    Requires little installation space on site
  • High resolution of pulse values:
    Precise instantaneous values
  • CH refrigeration certification (METAS) incl. initial calibration:
    Approved for use in commercial transactions

Applications

  • Particularly suitable for district heating/cooling applications (main meters, transfer stations, etc.) in billing transactions
  • Replacement of mechanical impeller heat meters
  • Heat and/or cooling consumption measurement in building services engineering
  • Can only be used with MULTICAL® series calculators

Options

  • Pulse transmitter with its own power supply for cable lengths >10 m
Ultraschall Waermezaehler Volumenmessteile statisch Ultraflow54

Properties

  • Nominal diameters:
    Heating: DN 20 to DN 300
    Combined heating/cooling: DN 150 to DN 300
    Cooling: DN 150 to DN 300
  • Nominal flow rates:
    Heat: qp 1,5 to qp 1000
    Heat/cooling combined: qp 150 to qp 1000
    Cooling: qp 150 to qp 1000
  • Low pressure loss
  • No moving parts
  • Signal transmission to the computing unit and power supply to the volume measuring device via a 3-wire cable
  • Medium temperature:
    Heat: 15 to 130 °C
    Heat/cooling combined: 2 to 130 °C
    Cooling: 2 to 130 °C
    From 90 °C, a flange meter, wall mounting of the electronic unit of the volume measuring part from DN 150, and relocation of the calculator are recommended.
  • Type approval/certification:
    - Heat: Conformity acc. European Measuring Instruments Directive (MID)
    - Cold: Swiss certification (METAS) including initial calibration

Product information

Technical Data ULTRAFLOW® 54 (DN 20 - 65)
Series ULTRAFLOW® 54
Nominal diameter DN mm 20 20 25 25 25 25 32 40 40 50 65
Nominal flow rate qp m3/h 1,5 2,5 3,5 3,5 6 6 6 10 10 15 25
Nominal pressure PN bar - - 16 - 16 - - 16 - - -
Nominal pressure with flanges PN bar 25 25 - 25 - 25 25 - 25 25 25
Connection thread on meter G…B Inch - - - - - 2 - - -
Maximum flow rate qs m3/h 3 5 7 7 12 12 12 20 20 30 50
Minimum flow rate +/- 5 % qi l/h 15 25 35 35 60 60 60 100 100 150 250
Kvs value m3/h 3,2 13,4 13,4 13,4 13,4 13,4 13,4 40 40 40 102
Starting flow l/h 3 5 7 7 12 12 12 20 20 30 50
Temperature max. °C 130 130 130 130 130 130 130 130 130 130 130
Standard measuring range qi / qp 1:100 1:100 1:100 1:100 1:100 1:100 1:100 1:100 1:100 1:100 1:100
Dimensions and weights
Length without couplings A mm - - 260 - 260 - - 300 - - -
Total height B mm - - 80 - 80 - - 96 - - -
Height from pipe center line C mm - - 58 - 58 - - 65 - - -
Width D mm - - 55 - 55 - - 55 - - -
Length with flanges A mm 190 190 - 260 - 260 260 - 300 270 300
Height with flanges E mm 95 95 - 106 - 106 128 - 136 145 168
Flange outer diameter1) H mm 105 105 - 115 - 115 140 - 150 165 185
Bolt circle diameter1) K mm 75 75 - 85 - 85 100 - 110 125 145
Number of screws1) Pcs. 4 4 - 4 - 4 4 - 4 4 8
Weight without couplings app. kg - - 2,3 - 2,3 - - 4,5 - - -
Weight with flanges app. kg 2,9 2,9 - 5,0 - 5,0 5,2 - 8,3 10,1 13,2

1) DIN EN 1092

Technical Data ULTRAFLOW® 54 (DN 80 - 300)
Series ULTRAFLOW® 54
Nominal diameter DN mm 80 100 100 125 150 150 150 200 200 250 250 250 300
Nominal flow rate qp m3/h 40 60 100 100 150 250 400 400 600 400 600 1000 1000
Nominal pressure PN bar - - - - - - - - - - - - -
Nominal pressure with flanges PN bar 25 25 25 25 25 25 25 25 25 25 25 25 16
Connection thread on meter G…B Inch - - - - - - - - - - - - -
Maximum flow rate qs m3/h 80 120 200 200 300 500 800 800 1200 800 1200 2000 2000
Minimum flow rate +/- 5% qi l/h 400 600 1000 1000 1500 2500 4000 4000 6000 4000 6000 10000 10000
Kvs value m3/h 179 373 373 373 1060 1060 2000 4040 4040 4040 4040 8160 8160
Starting flow l/h 80 120 200 200 300 500 800 800 1200 800 1200 2000 2000
Temperature max. °C 130 130 130 130 130 130 130 130 130 130 130 130 130
Standard measuring range qi / qp 1:100 1:100 1:100 1:100 1:100 1:100 1:100 1:100 1:100 1:100 1:100 1:100 1:100
Dimensions and weights
Length without couplings A mm - - - - - - - - - - - - -
Total height B mm - - - - - - - - - - - - -
Height from pipe center line C mm - - - - - - - - - - - - -
Width D mm - - - - - - - - - - - - -
Length with flanges A mm 300 360 360 350 500 500 500 500 500 600 600 600 500
Height with flanges E mm 184 220 220 260 300 300 300 360 360 425 425 425 460
Flange outer diameter1) H mm 200 235 235 270 300 300 300 360 360 425 425 425 460
Bolt circle diameter1) k mm 160 190 190 220 250 250 250 310 310 370 370 370 410
Number of screws1) Pcs. 8 8 8 8 8 8 8 12 12 12 12 12 12
Weight without couplings app. kg - - - - - - - - - - - - -
Weight with flanges app. kg 16,8 21,7 21,7 28,2 37 37 36 49 49 79 79 75 76

1) DIN EN 1092

Dimension Diagram
ULTRAFLOW 54 E Pe80105 2
ULTRAFLOW 54 E Pe80105 3
Typical Head Loss Curve
ULTRAFLOW 54 E Pe80105 4
Installation positions
Pipe: horizontal iconHorizontalLine
vertical iconVerticalLine
inclined iconDiagonal
Head of the meter to the side iconArrowLeftRight
ULTRAFLOW® 54 DN 20 – DN 125: ± 45° iconPlusMinus45Degrees
ULTRAFLOW® 54 DN 150 – DN 300: ± 90° icon360Degrees
Electrical connections
ULTRAFLOW® 54 MULTICAL®
Blue (Masse) / 11 A 11
Red (Supply) / 9 A 9
Yellow (Signal) / 10 A 10
Installation note

For ULTRAFLOW® 54 ≤ DN 125 (100 m3/h), the black electronics housing must be installed on the side (for horizontal installation). ULTRAFLOW® 54 can be rotated up to ± 45° in relation to the pipe axis. ULTRAFLOW® 54 does not require a straight inlet or outlet section. ULTRAFLOW® 54 must not be exposed to pressure lower than the ambient pressure (vacuum).

For ULTRAFLOW® 54 ≥ DN 150 (150 m3/h), it is recommended that the black electronics housing be installed on the side (for horizontal installation) in order to better measure any layer flows. However, ULTRAFLOW® 54 may also be rotated up to ± 90° in relation to the pipe axis. ULTRAFLOW® 54 does not require a straight inlet or outlet section. ULTRAFLOW® 54 must not be exposed to pressure lower than the ambient pressure (vacuum).
 

Installation recommendations

Strong flow disturbances mostly occur in connection with valves and pumps that aren't fully open, as well as multiple bends. The minimal distances listed below have proven effective when installing thermal energy meters (best-practice approach):
 

Minimum recommended distances Ultrasonic volume measuring device DN 20 - 80 Ultrasonic volume measuring device DN 100 - 300
If valves are not fully open 20 x DN 40 x DN
On the pressure side of pumps 20 x DN 20 x DN
For multiple arches 5 x DN 5 x DN
Materials

Parts in contact with medium
 

ULTRAFLOW® 54 qp 1,5 and qp 2,5 

Housing with flange connection: Stainless steel, W. No. 1.4308

Sensor: Stainless steel, W. No. 1.4401

Seals: EPDM

Reflector: Thermoplastic, PESU 30 % GF and stainless steel, comparable to AISI 304 or AISI 316

Measuring tube: Thermoplastic, PESU 30 % GF

 

ULTRAFLOW® 54 qp 3,5 to qp 100

Housing with threaded connection: Dezincification-resistant brass

Housing with flange connection: Stainless steel, W. No. 1.4308

Sensor: Stainless steel, W. No. 1.4401

Seals: EPDM

Reflector: Thermoplastic, PESU 30 % GF and stainless steel, comparable to AISI 304 or AISI 316

Measuring tube: Thermoplastic, PESU 30 % GF

 

ULTRAFLOW® 54 qp 150 to qp 1000

Housing with flange connection: Stainless steel, W. No. 1.4301

 

Electronic housing

Base: Thermoplastic, PC 10 % GF

Cover: Thermoplastic, PC 20 % GF

 

Connection cable

Cable: Silicone (3 x 0,5 mm2

Enquire

Last updated: 02.07.2026
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