Thermal energy meter
Multical® 403
Product categories
Heat / Cooling
Ultrasonic heat meter
Heat / Cooling
Ultrasonic
Wired
Impulse,
M-Bus,
Modbus,
BacNET
Wireless
wM-Bus,
LoRaWAN
Smart City
Smart Building
Your benefits
- Ultrasonic technology
Long term stable energy measurement with highest accuracy - Modular design with high flexibility
Base device expandable, reduced inventory - Comprehensive data logger
Access to information for analysis and optimization - One time reprogramming of metrological parameters on site without breaking the MID seal
Flexibility and time saving during commissioning - Option cards for various functions
Cost effective base device
Functions can be added later - Swiss cooling approval (METAS) incl. initial verification
Approved for billing purposes
Applications
- Especially suitable for district heating billing applications (main meters, transfer stations, etc.)
- Replacement of mechanical turbine heat meters
- Heating and or cooling consumption measurement in building services
Options
- Option cards for:
- M-Bus with 2 water meter inputs
- M-Bus with 2 pulse outputs energy and volume
- Wireless OMS T1 868 MHz
- 2 active analog outputs 0/4 to 20 mA
- BACnet MS/TP RS485
- Modbus RTU RS485
- BACnet IP
- LoRaWAN internal or external antenna
Downloads
Properties
- Nominal diameters DN 15 to DN 50
- Nominal flow rates qp 0,6 bis qp 15
- Any installation position
- Low pressure loss
- Medium temperature 2 to 90°C (up to 130°C wall mounting)
- Calculator temperature range 2 to 180°C
- Mains supply 230 VAC, 24 VAC supply or with 16-year battery (wall mounting) respectively 14 years (compact mounting)
- Integrated real time clock and data logger
- Large LCD display 7 digits
- Temperature sensors Pt500
- Storage of last 36 monthly and 20 yearly values
- Type approval / Certification:
- Heating: Conformity according to the European Measuring Instruments Directive (MID) ()
- Cooling: Swiss approval (METAS) including initial verification
Product information
Technical Data
| Series | ||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Nominal diameter | DN | mm | 15 | 20 | 15 | 15 | 20 | 20 | 20 | 20 | 25 | 25 | 25 | 40 | 40 | 50 |
| Nominal flow rate | qp | m3/h | 0,6 | 0,6 | 1,5 | 1,5 | 1,5 | 1,5 | 2,5 | 2,5 | 3,5 | 6 | 6 | 10 | 10 | 15 |
| Nominal pressure 1) | PN | bar | 16 | 16 | 16 | 16 | 16 | 16 | 16 | 16 | 16 | 16 | - | 16 | - | - |
| Connection thread with meter | PN | bar | - | - | - | - | - | - | - | - | - | - | 25 | - | 25 | 25 |
| Meter connection thread | G...B | Zoll | ¾ | 1 | ¾ | ¾ | 1 | 1 | 1 | 1 | 1¼ | 1¼ | - | 2 | - | - |
| Maximum flow rate | qs | m3/h | 1.2 | 1.2 | 3 | 3 | 3 | 3 | 5 | 5 | 7 | 12 | 12 | 20 | 20 | 30 |
| Minimum flow rate +/- 5% | qi | l/h | 6 | 6 | 15 | 15 | 15 | 15 | 25 | 25 | 35 | 60 | 60 | 100 | 100 | 150 |
| Kvs value | m3/h | 3,46 | 3,46 | 4,89 | 4,89 | 4,89 | 4,89 | 8,15 | 8,15 | 13,42 | 24,5 | 24,5 | 40,83 | 40,83 | 40,09 | |
| Start-up value | l/h | 3 | 3 | 3 | 3 | 3 | 3 | 5 | 5 | 7 | 12 | 12 | 20 | 20 | 30 | |
| Temperature | max. °C | 130 | ||||||||||||||
| Standard measuring range | qi / qp | 1:100 | ||||||||||||||
1) Auch mit Nenndruck PN 25 lieferbar
| Dimensions and weights | ||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Length without couplings | A | mm | 110 | 190 | 110 | 165 | 130 | 190 | 130 | 190 | 260 | 260 | - | 300 | - | - |
| Total height | B | mm | 67 | 76 | 67 | 67 | 70 | 76 | 76 | 76 | 71 | 73 | - | 84 | - | - |
| Height from center of pipe | C | mm | 35 | 38 | 35 | 35 | 38 | 38 | 38 | 38 | 51 | 53 | - | 55 | - | - |
| Width | D | mm | 48 | 48 | 48 | 48 | 48 | 48 | 48 | 48 | - | - | - | - | - | - |
| Length with PN 25 flanges | A | mm | - | - | - | - | - | - | - | - | - | - | 260 | - | 300 | 270 |
| Height with flanges | E | mm | - | - | - | - | - | - | - | - | - | - | 106 | - | 140 | 145 |
| Flange outer diameter 2) | H | mm | - | - | - | - | - | - | - | - | - | - | 115 | - | 150 | 165 |
| Bolt circle diameter 2) | k | mm | - | - | - | - | - | - | - | - | - | - | 85 | - | 110 | 125 |
| Number of screws 2) | pcs | - | - | - | - | - | - | - | - | - | 4 | - | 4 | 4 | ||
| Weight without couplings | approx. kg | 0,9 | 1,1 | 0,9 | 1.0 | 1.0 | 1,1 | 1.0 | 1,2 | 2.0 | 2,1 | - | 3.0 | - | - | |
| Weight with flanges | approx. kg | - | - | - | - | - | - | - | - | - | - | 4,6 | - | 7,5 | 8,6 | |
2) DIN EN 1092
Massbilder
Einbaulagen
| Pipeline: | horizontal |  |
| vertical |  | |
| inclined |  | |
| Head of the meter | ||
| MULTICAL® 403: | to the side ±0° |  |
Pressure lost curve
Option cards
The MULTICAL® 403 is factory prepared for the installation of various option cards. These can also be retrofitted to already installed heat meters. Technical data available on request.
Installation note
For the MULTICAL® 403, the black electronic housing must be installed sideways (for horizontal installation). The flow sensor should be mounted at an angle of 0° and can be rotated 90° downward. The MULTICAL® 403 requires neither a straight inlet nor outlet pipe section. The MULTICAL® 403 must not be exposed to pressure below ambient pressure (vacuum).
Installation recommendations
Significant flow disturbances usually occur in connection with partially open valves, pumps and multiple bends. The minimum distances listed below have proven effective for the installation of thermal energy meters (best practice approach):
| Minimal empfohlene Abstände | Ultrasonic volume measuring section DN 15 - 50 | |
|---|---|---|
| At partially open valves | 20 x DN | |
| Downstream of pumps | 20 x DN | |
| At multiple bends | 5 x DN | |
| Calculator | |
|---|---|
| Temperature range | 2 to 180°C |
| Temperature difference | 3 to 178K |
| Max. display resolution (7 digits) | ■ 9'999,999 ■ 99’999,99 ■ 999’999,9 ■ 9’999’999 |
| Power supply | ■ 230VAC Mains supply ■ 24VAC Supply |
| Lithium battery power supply | 3,6V ±0,1V |
| Battery lifetime | 16 years |
| Environmental class | EN 1434 – Class A |
| Protection class | IP54 |
| Ambient temperature | 5 to 55°C |
| Storage temperature | -25 to +60°C |
| Temperature sensor connection | 2-wire connection |
| Temperature sensor | |
|---|---|
| Sensor element | Pt 500 |
| Version | ■ Direct immersion sensor ■ Thermowell measurement |
| Connection diagram | 2-wire connection |
| Installation length | 65mm / 90mm / 140mm |
| Cable lengths | 2x1,5m / 2x3m |