Ultrasonic volume measuring device
ULTRAFLOW® 44
Product categories
Durable, wear-free ultrasonic volume measuring device. Particularly 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/cooling or pure 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
Downloads
Properties
- Nominal diameters:
- Combined heating/cooling: DN 15 to DN 125
- Cooling: DN 15 to DN 125 - Nominal flow rates qp 1.5 to qp 100
- 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 2 to 130 °C (from 90 °C, a flange meter and the removal of the calculator are recommended)
- Type approval/certification:
- Heat:Compliance with European Measuring Instruments Directive (MID)
- Cold: Swiss certification (METAS) including initial calibration
Product information
Technical data ULTRAFLOW® 44 (DN 15-65)
| Series | ULTRAFLOW® 44 | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Nominal diameter | DN | mm | 15 | 20 | 20 | 25 | 25 | 25 | 25 | 40 | 40 | 50 | 65 |
| Nominal flow rate | qp | m3/h | 1,5 | 1,5 | 2,5 | 3,5 | 3 | 3 | 3 | 10 | 10 | 15 | 25 |
| Nominal pressure | PN | bar | 16 | 16 | 16 | 16 | 16 | 16 | 16 | ||||
| Nominal pressure with flanges | PN | bar | 25 | 25 | 25 | 25 | |||||||
| Connection thread with meter | G…B | Inch | ¾ | 1 | 1 | 1¼ | 1¼ | 1¼ | 2 | ||||
| Maximum flow rate | qs | m3/h | 3 | 3 | 5 | 7 | 12 | 12 | 12 | 20 | 20 | 30 | 50 |
| Minimum flow rate +/- 5% | qi | l/h | 15 | 15 | 25 | 35 | 60 | 60 | 60 | 100 | 100 | 150 | 250 |
| Pressure loss | Kv 1) | m3/h | 4,9 | 4,9 | 8,2 | 13,4 | 24,5 | 24,5 | 24,5 | 40 | 40 | 40 | 102 |
| Start-up value | l/h | 3 | 3 | 5 | 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 | |
1) q=kv x √∆p
| Dimensions and weights | |||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Length without couplings | L | mm | 110 | 130 | 190 | 190 | 260 | 260 | - | 300 | - | - | - |
| Total height | B | mm | 67 | 70 | 76 | 71 | 73 | 84 | - | 84 | - | - | - |
| Height from center of pipe | B1 | mm | 35 | 38 | 38 | 51 | 53 | 60 | 55 | ||||
| Width | H1 | mm | 42 | 42 | 42 | 41 | 41 | 41 | 41 | ||||
| Length with PN 25 flanges | A | mm | 260 | 300 | 270 | 300 | |||||||
| Height with flanges | H | mm | 106 | 140 | 145 | 168 | |||||||
| Flange outer diameter 2) | D | mm | 115 | 150 | 165 | 185 | |||||||
| Bolt circle diameter 2) | K | mm | 85 | 110 | 125 | 145 | |||||||
| Number of screws 2) | Stk. | 4 | 4 | 8 | 8 | ||||||||
| Weight without couplings | ca. kg | 0,6 | 0,7 | 0,9 | 1,9 | 2,0 | 2,0 | 2,9 | |||||
| Weight with flanges | ca. kg | 4,5 | 7,4 | 8,5 | 13,5 | ||||||||
2) DIN EN 1092
Technical data ULTRAFLOW® 44 (DN 80-125)
| Series | ULTRAFLOW® 44 | ||||||||
|---|---|---|---|---|---|---|---|---|---|
| Nominal diameter | DN | mm | 80 | 100 | 100 | 125 | |||
| Nominal flow rate | qp | m3/h | 40 | 60 | 100 | 100 | |||
| Nominal pressure | PN | bar | |||||||
| Nominal pressure with flanges | PN | bar | 25 | 25 | 25 | 25 | |||
| Connection thread with meter | G…B | Inch | |||||||
| Maximum flow rate | qs | m3/h | 80 | 120 | 200 | 200 | |||
| Minimum flow rate +/- 5% | qi | l/h | 400 | 600 | 1000 | 1000 | |||
| Pressure loss | Kv 3) | m3/h | 179 | 373 | 373 | 373 | |||
| Start-up value | l/h | 80 | 120 | 130 | 130 | ||||
| Temperature | max. °C | 130 | 130 | 130 | 130 | ||||
| Standard measuring range | qi/qp | 1:100 | 1:100 | 1:100 | 1:100 | ||||
3) q=kv x √∆p
| Dimensions and weights | ||||||
|---|---|---|---|---|---|---|
| Length without couplings | L | mm | ||||
| Total height | B | mm | ||||
| Height from center of pipe | B1 | mm | ||||
| Width | H1 | mm | ||||
| Length with PN 25 flanges | A | mm | 300 | 360 | 360 | 350 |
| Height with flanges | H | mm | 184 | 220 | 220 | 260 |
| Flange outer diameter 4) | D | mm | 200 | 235 | 35 | 270 |
| Bolt circle diameter 4) | K | mm | 160 | 190 | 190 | 220 |
| Number of screws 4) | Stk. | 8 | 8 | 8 | 8 | |
| Weight without couplings | ca. kg | - | - | - | - | |
| Weight with flanges | ca. kg | 17,1 | 22 | 22 | 28,5 | |
4) DIN EN 1092
All ULTRAFLOW® 44 flow sensors come with a separate electronics box containing the circuit board. This electronics box is connected to the plastic housing of the respective meter housing via a coaxial cable with a length of < 1.2 m. The plastic housing on the meter housings contains the transducers of the flow sensor.
| Nominal diameter | Length (m) | Approximate weight (kg) |
|---|---|---|
| qp 1,5 and 2,5 m3/h | 2,5 | 0.18 |
| qp 1,5 to 100 m3/h | 2,5 | 0.36 |
Dimension chart
Pressure loss curve
| Graph | qp (m3 / h) | Nominal diameter (mm) | Δp@qp (bar) | kv 5) |
|---|---|---|---|---|
| A | 1,5 | DN/15/DN20 | 0,09 | 4,9 |
| B | 2,5 | DN20 | 0,09 | 8,2 |
| C | 3,5 | DN20 | 0,07 | 13,4 |
| D | 6 | DN/25/DN32 | 0,06 | 24,5 |
| E | 10 | DN40 | 0,06 | 40 |
| E | 10 | DN50 | 0,14 | 40 |
| F | 25 | DN60 | 0,06 | 102 |
| G | 40 | DN80 | 0,05 | 179 |
| H | 60 | DN100 | 0,03 | 373 |
| H | 100 | DN100/DN125 | 0,07 | 373 |
5) q=kv x √∆p
Installation note
With ULTRAFLOW® 44, the black electronics housing must be installed on the side (for horizontal installation). ULTRAFLOW® 44 can be rotated up to +45° in relation to the pipe axis. If there is a risk of condensation, e.g. in refrigeration installations or if ULTRAFLOW® 44 is installed in a humid environment, ULTRAFLOW® 44 must be rotated +45° to the pipe axis. ULTRAFLOW® 44 does not require a straight inlet or outlet section. ULTRAFLOW® 44 must not be exposed to pressure lower than the ambient pressure (vacuum).
Installation recommendations
Severe flow disturbances usually occur in connection with valves and pumps that are not fully open, as well as multiple bends. The minimum distances listed below have proven effective in the installation of thermal energy meters (best practice approach):
| Ultrasonic volume measurement unit DN 15 - 80 | Ultrasonic volume measurement unit DN 100 - 250 | |
|---|---|---|
| Minimum recommended distances | Ultrasonic volume measurement unit DN 15-80 | Ultrasonic volume measurement unitDN 100 - 250 |
| For valves that are not fully open | 20 x DN | 40 x DN |
| On the pressure side of pumps | 20 x DN | 20 x DN |
| For multiple bends | 5 x DN | 5 x DN |
Installation positions
| Pipeline: | horizontal |  |
| vertical |  | |
| diagonal |  | |
| Head of the meter ULTRAFLOW® 44: | to the side |  |
| DN 15 – DN 125 | + 45° |
Electrical connections
MULTICAL® and ULTRAFLOW® 44 connections
| ULTRAFLOW® 44 | → | MULTICAL® |
| Blue (ground) | → | 11 |
| Red (power supply) | → | 9 |
| Yellow (signal) | → | 10 |
Materials
| Parts in contact with the medium ULTRAFLOW® 44 qp 1,5 and 2,5 | |
| Housing with threaded connection | Dezincification-resistant brass |
| Sensor | Stainless steel, W. No. 1.4401 |
| Seals | EPDM |
| Reflector | Thermoplastic, PES 30% GF and stainless steel, comparable to AISI 304 |
| Measuring tube | Thermoplastic, polyethersulfone (PESU) |
| ULTRAFLOW® 44 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. 1.4404 |
| Seals | EPDM |
| Reflector | Thermoplastic, PES 30% GF and stainless steel, comparable to AISI 304 |
| Measuring tube | Thermoplastic, polyethersulfone (PESU) 30% GF |
| Electronics enclosure | |
| Basis | qp 1.5 - 2.5 Thermoplastic, PESU 30% GF qp ≥ 3.5 Thermoplastic PC 10% GF |
| Lid | Thermoplastic, PC 10% GF |
| Connecting cable Signal cable | Silicone (3x0.25 mm2) |