Ultrasonic volume measuring device
ULTRAFLOW® 85
Product categories
ULTRAFLOW® 85 is a static flow sensor based on the ultrasonic measuring principle and has been designed for use in heat and cooling installations where water is used as the heat-bearing medium. It is used primarily as a subassembly of a thermal energy meter in combination with a set of Temperaturesensor and the separate calculators MULTICAL® 603/803. 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 unit:
High measuring stability and operational reliability - Compact design:
Little installation space required on site - High resolution of the pulse value:
Precise instantaneous values - CH refrigeration approval (METAS) incl. initial calibration:
Approved for use in clearing traffic
Applications
- Especially suitable for district heating/cooling applications (main meters, transfer stations, etc.) in billing traffic
- Heating and/or cooling consumption measurement in the building services sector
- MID-approved bidirectional flow measurement
Options
- Pulse transmitter with its own power supply for cable lengths >10 m
Downloads
Links
Calculator MULTICAL® 603Properties
- Nominal flow rate: qp 150 - qp 1000 m³/h
- Nominal diameter: DN 150 bis DN 300
- Low pressure loss
- Built-in display
- Medium temperature: 2 to 130 °C
- Type testing/approval:
- Heat:
Conformity in accordance with the European Measuring Instruments Directive (MID)
- Cooling: CH approval (METAS) incl. initial calibration
Product information
Compliance
Type approval
| Approved volume measuring meter for heating in accordance with MID 2014/32/EU | |
|---|---|
| EU-Type Examination certificate | DK-0200-MI004-048 |
| MID-certified according to Module D | DK-0200-MID-D-001 |
| Tested volume measuring meter for cooling in accordance with DK-BEK 1178 – 06/11/2014 | |
|---|---|
| System designation | TS 27.02 019 |
| Verification | DANAK accreditation 268 |
| Standards and documents | |
|---|---|
| EN | EN 1434:2022 |
| OIML | OIML R75:2002 |
| WELMEC | WELMEC 7.2:2023 (May 2024) |
| CE-marking | |
|---|---|
| ULTRAFLOW® 85 is marked in accordance with | |
| EMC-directive | 2014/30/EU |
| LV-directive | 2014/35/EU (together with Pulse Transmitter or Pulse Divider) |
| PE-directive | 2014/68/EU (category I or II) |
| Approved meter data | |
|---|---|
| MID designation | |
| Mechanical environment | M1 (vibrations and shocks of low significance) M2 (significant or high levels of vibrations and shocks) |
| Electromagnetic environment | E1 (residential, commercial and light industrial buildings) E2 (other industrial buildings |
| Ambient conditions | 5…55 °C, condensing, closed location (indoors installation) |
| Accuracy class | 2 and 3 |
| EN 1434 designation | |
| Environmental class | C (high electrical and electromagnetic conditions) |
| Fast response meter | Volume sampling interval (sub-assembly flow sensor) depends on connected calculator. Down to 0,5 s with MULTICAL® 603-S/603-U/803-A. Requires mains supply. Otherwise 1 s. |
Technical Data
| Electrical data | |
|---|---|
| Internal supply voltage battery: | 3,6 V DC ± 0,1 V DC |
| Display backlight | OFF |
| (MULTICAL® or Pulse Transmitter/Pulse Divider) | 3,65 V DC, D-cell lithium |
| Battery lifetime (replacement interval): | |
| ULTRAFLOW® 85 and MULTICAL® - serial mode - pulse mode | Up to 16 years @ tBAT <30 °C Up to 13 years @ tBAT <30 °C |
| - Pulse Transmitter/Pulse Divider | 6 years @ tBAT <30 °C (Y=3) |
| Mains supply: | |
| Display backlight | ON |
| - MULTICAL® | 230 V AC +15/-30 %, 50 Hz or 60 Hz |
| - Pulse Transmitter/Pulse Divider | 24 V AC ± 50 %, 50 Hz or 60 Hz |
| Backup supply | Integral capacitor eliminates operational disturbances due to short-term power cuts |
| Cable length: | |
| - Flow sensor | Max. 10 m |
| - Pulse Transmitter/Pulse Divider | Depends on calculator – max. 100 m when connected to MULTICAL® (Y=2) |
| - Cable Extender Box | Depends on calculator – max. 30 m when connected to MULTICAL® (does not provide galvanic separation, but supports measurement of forward and reverse flow as well as extended info codes) |
| Electromagnetic environment | Fulfils EN 1434 class C, MID E1 and E2 |
| Pulse output | Galvanically connected (ULTRAFLOW®) |
| - Typ | Push-Pull |
| - Output impedance | 10 kW |
| - Pulse duration | 2...6 ms |
| - Pause time | Depending on current pulse frequency |
| Mechanical data | |
|---|---|
| Accuracy class | 2 and 3 |
| Electromagnetic environment | Fulfils EN 1434 class C, MID E1 and E2 |
| Mechanical environment | MID M1 and M2 |
| Ambient conditions | 5…55 °C, closed location (installation indoors) |
| Protection class: | |
| - Flow sensor - Cable extender box - Pulse Transmitter/Pulse Divider | IP68 IP68 IP67 |
| Medium in flow sensor | Water – recommended water quality as in CEN TR 16911 and AGFW FW510 |
| Medium temperature1) | 2...150 °C or narrower range |
| Storage temperature | -25…60 °C |
| Pressure stage | PN16, PS16 (DN 300) PN25, PS25 or PN16, PS16 (DN 150-250); see marking |
| Straight inlet requirement | 0D (according to EN 1434:2022 and OIML R75:2002) |
| Installation angle | Horizontally, vertically and at an angle |
1) At medium temperature above 120 °C ULTRAFLOW® 85 must be insulated! Do not cover the hole of the extension tube, when insulating ULTRAFLOW® 85!
Flow data
| Flow data | |||||||
|---|---|---|---|---|---|---|---|
| Nominal flow rate | qp | m3/h | 150 | 250 | 400 | 600 | 1000 |
| Meter factor1) | p/l | 1 | 0,6 | 0,4 | 0,25 | 0,15 | |
| Dynamic range | qp:qi | 100:1 | |||||
| Dynamic range | qs:qp | 2:1 | |||||
| Flow at 125 Hz2) | q | m3/h | 450 | 750 | 1125 | 1800 | 3000 |
| Min. cutoff | l/h | 750 | 1250 | 2000 | 3000 | 5000 | |
1) The meter factor appears from the type label.
2) Saturation flow 125 Hz. Max. pulse frequency is maintained at higher flow.
Measurement accuracy
| Measurement accuracy | |
|---|---|
| Class 3 | Ef = ±(3 + 0,05 qp/q), but not above ±5 % |
| Class 2 | Ef = ±(2 + 0,02 qp/q), but not above ±5 % |
| Typical1) | Ef = ±(1 + 0,01 qp/q) |
1) Documented with DANAK-accredited certificate at flow qi, 0,1 qp and qp.
Materials
| Wetted parts | |
|---|---|
| Housing | Stainless steel, W. no. 1.4308 |
| Flanges | Stainless steel, W. no. 1.4301 |
| Transducer | Titanium |
| Gaskets | Fibre |
| Electronic box | |
|---|---|
| Extension tube | Thermoplastic, 40 % glass-reinforced Polyphenylenesulfide (PPS) |
| Base part | Thermoplastic, 10 % glass-reinforced polycarbonate (PC) |
| Transparent lid | Thermoplastic, Polycarbonate (PC) |
| Top cover | Thermoplastic, 10 % glass-reinforced polycarbonate (PC) |
| Calculator mount bracket | Thermoplastic, 10 % glass-reinforced polycarbonate (PC) |
| Signal cable (optional) | Silicone cable (3 x 0,5 mm²) |
| Power supply cable 24/230 VAC (optional for Pulse Transmitter/Pulse Divider) | Cable with PVC mantle (2 x 0,75 mm²) |
| Housing, Cable Extender Box | |
|---|---|
| Base, cover | Thermoplastic, acrylonitrile butadiene styrene (ABS) |
| Housing, Pulse Transmitter/Pulse Divider | |
|---|---|
| Base, cover | Thermoplastic, 10 % glass-reinforced polycarbonate (PC) |
Dimensional sketches ULTRAFLOW® 85
Flange facing type B, raised face according to EN 1092-1
| ULTRAFLOW® 85 PN16 | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| Nominal flow rate | qp | m3/h | 150 | 250 | 250 | 400 | 400 | 600 | 600 | 1000 |
| Nominal diameter | DN | mm | 150 | 150 | 200 | 200 | 250 | 250 | 300 | 300 |
| Nominal pressure | PN,PS | bar | 16 | |||||||
| Length | L | mm | 500 | 600 | 500 | |||||
| Flange diameter | D | mm | 285 | 340 | 405 | 460 | ||||
| Pitch circle diameter | k | mm | 240 | 295 | 355 | 410 | ||||
| Bolt quantity | Pcs. | 8 | 12 | |||||||
| Bolt thread | M20 | M24 | ||||||||
| Bolt diameter | d2 | mm | 22 | 26 | ||||||
| Height from pipe centre line | E | mm | 264 | 281 | 341 | 370 | ||||
| Weight | kg | 27 | 41 | 67 | 80 | |||||
| ULTRAFLOW® 85 PN25 | ||||||||
|---|---|---|---|---|---|---|---|---|
| Nominal flow rate | qp | m3/h | 150 | 250 | 250 | 400 | 400 | 600 |
| Nominal diameter | DN | mm | 150 | 150 | 200 | 200 | 250 | 250 |
| Nominal pressure | PN,PS | bar | 25 | |||||
| Length | L | mm | 500 | 600 | ||||
| Flange diameter | D | mm | 300 | 360 | 425 | |||
| Pitch circle diameter | k | mm | 250 | 310 | 370 | |||
| Bolt quantity | Pcs. | 8 | 12 | |||||
| Bolt thread | M24 | M27 | ||||||
| Bolt diameter | d2 | mm | 26 | 31 | ||||
| Height from pipe centre line | E | mm | 264 | 281 | 341 | |||
| Weight | kg | 33 | 53 | 83 | ||||
Dimensional sketches boxes
Pulse Transmitter/Pulse Divider
Cable Extender Box
Pressure loss
| A | B | C | D | |||||||
|---|---|---|---|---|---|---|---|---|---|---|
| Nominal flow rate | qp | m3/h | 150 | 250 | 250 | 400 | 400 | 600 | 600 | 1000 |
| Nominal diameter | DN | mm | 150 | 150 | 200 | 200 | 250 | 250 | 300 | 300 |
| Length | mm | 500 | 500 | 600 | 500 | |||||
| Pressure loss at qp | bar | 0,02 | 0,06 | 0,02 | 0,04 | 0,02 | 0,04 | 0,01 | 0,03 | |
| kv value | m3/h | 1100 | 1945 | 2940 | 5900 | |||||
| Flow rate at 0,25 bar | m3/h | 550 | 973 | 1470 | 2950 | |||||
Installation
Please read this chapter carefully before installing the meter
In case of incorrect mounting, manufacturer's guarantee obligations no longer apply. By connecting to 230 V supply, there is a risk of electric shock. When working on the flow sensor in the installation, there is a risk of outflow of (hot) water under pressure. At a media temperature higher than 60 °C, the flow sensor should be shielded from unintended contact. Prior to installation of the flow sensor, the system should be flushed. Correct flow sensor position (inlet or outlet) appears from the front label of MULTICAL®. The forward flow direction is indicated by an arrow on the flow sensor.
ULTRAFLOW® 85 may be lifted in the lifting rings only.
Pressure stage: PN16, PS16 or PN25, PS25. See marking on flange or label.
Temperature of medium: 2…150 °C or narrower range. See marking on label.
Mechanical environment: M1 and M2 (fixed installation with minimum vibration and fixed installation with considerable or high vibration level respectively).
Electromagnetic environment: E1 and E2 (housing/light industry and industry respectively). The meter’s signal cables must be drawn at min. 25 cm distance to other installations.
Ambient conditions: The ambient temperature must be within 5…55 °C. Installation must be in closed locations (indoors).
Protection class: IP68 – The flow sensor is durable, even in permanently wet conditions.
Insulation: ULTRAFLOW® 85 can be insulated. At medium temperature above 120 °C ULTRAFLOW® 85 must be insulated.
Maintenance and repair: The flow sensor is verified separately and can, therefore, be separated from the calculator. It is permitted to replace the transparent lid and the 3-wire cable from ULTRAFLOW® 85 on-site. Other repairs must be performed in a workshop and requires subsequent reverification in an accredited laboratory.
| Heat installations | The tower can point in any direction. |  |
| Cooling installations | The tower must always point upwards to avoid risking condensation damaging the electronics. |  |
Inlet section ULTRAFLOW® 85
ULTRAFLOW® 85 requires neither straight inlet nor outlet in order to fulfil the Measuring Instruments Directive (MID) 2014/32/EU and EN 1434. Only in case of heavy flow disturbances before the meter will a straight inlet section be necessary. We recommend following the guidelines in CEN TR 13582.
Operating pressure
To minimise the risk of measuring errors as a result of cavitation or air in the water, it is recommended to keep a sufficient static pressure at the flow sensor outlet of min. 1,5 bar at qp and min. 2,5 bar at qs . This applies to temperatures up to app. 80 °C.
Electrical connection
Connecting via Pulse Transmitter/Pulse Divider/Cable Extender Box
| ULTRAFLOW® 85 | → | Pulse Transmitter/Pulse Divider/Cable Extender Box | → | MULTICAL® | |
|---|---|---|---|---|---|
| Input | Output | ||||
| Blue (GND) | → | 11 | 11A/11 | → | 11 |
| Red (supply) | → | 9 | 9A/9 | → | 9 |
| Yellow (signal) | → | 10 | 10A/10 | → | 10 |
Pulse Transmitter/Pulse Divider provides galvanic separation, but does not support extended info codes and bi-directional flow measurement.
Cable Extender Box does not provide galvanic separation, but supports extended info codes and does not prohibit bi-directional flow measurement.
If long signal cables are used, please consider the installation carefully. There must be at least 25 cm between the signal cable and all other cables due to EMC.
ULTRAFLOW® 85 is preferentially mains supplied e. g. via MULTICAL® 603-S/-U to achieve e. g. the highest volume sampling frequency.
In case of battery supply the battery lifetime depends on many parameters like e. g. data communication, integration mode and environmental temperature. For further information, see the technical documentation of the connected MULTICAL® calculator.
| ULTRAFLOW® 85 | → | MULTICAL® | Designation | Color |
|---|---|---|---|---|
| 11 | → | 11 | GND | (Blue) |
| 9 | → | 9 | +3,6 V | (Red) |
| 10 | → | 10 | Signal | (Yellow) |