Calculator
Multical® 803
Product categories
Heat / Cooling
Calculator
Heat / Cooling
Ultrasonic
System technology
Wired
Impulse,
M-Bus,
Modbus,
BacNET
Wireless
wM-Bus,
LoRaWAN
Smart City
Smart Building
Your benefits
- Ultrasonic technology:
Long-term stable energy measurement with maximum measurement accuracy - Large illuminated display:
Easy to read - Built-in 24 V DC auxiliary power supply
No external transformer installation required - Auto Detect function:
Automatically detects ULTRAFLOW® and sensor type - Comprehensive data logger:
Instant access to information for analysis and optimization purposes - Option cards for various functions:
- Affordable base unit
- Additional functions can be added later - CH refrigeration certification (METAS) incl. initial calibration:
Approved for use in commercial transactions
Applications
- Energy measurements for district heating supplies
- Heat and/or cooling consumption measurement in building services engineering
- Arithmetic unit for local or remote reading
- Leakage and pipe burst monitoring in district heating systems
Options
- Mixed fluid version (803-M) available on request
- Option cards for
- M-Bus / 2 water meter inputs
- M-Bus / 2 pulse outputs energy + volume
- Radio OMS T1, 868 MHz
- 2 active analog outputs 0/4…20 mA (mains power supply required)
- LonWorks, TP/FT-10 / 2 water meter inputs (high-power power supply required)
- BACnet MS/TP (RS485) + 2 water meter inputs (mains power supply required)
- Modbus RTU (RS485) + 2 water meter inputs (mains power supply required)
- Modbus TCP-IP / 2 water meter inputs (high-power power supply required)
- BACnet IP + 2 water meter inputs (high-power power supply required)
- LoRaWAN int./ext. antenna
Downloads
MULTICAL 803 EU Declaration of Conformity
Connection diagram for option cards (German)
Electrical diagram OPTIFLUX 4300 BD (German)
Electrical diagram OPTIFLUX 4300 (German)
Electrical diagram Waterflux Multical BD (German)
Electrical diagram Waterflux Multical BD (German)
Electrical diagram MULTICAL*®** 803 (German)
Properties
- Electronic calculator
- LCD display, resolution 7 or 8 digits, with backlighting
- Non-volatile EEPROM memory
- 4 module slots for option cards
- 6 years battery backup
- Pt 500 temperature sensor, 2-/4-wire technology
- Standard EN 1434
- Mains supply 230 V AC
- IP65 protection
- Impulsions de sortie énergie + volume
- Can be combined with the following volume measuring elements: ULTRAFLOW®, impeller meter with reed pulse generator and magnetic-inductive meter
- Type testing/approval: Heat: Conformity with European Measuring Instruments Directive (MID) / Cold: CH approval (METAS) incl. initial calibration
Product information
Technical data
| Performance data for the MULTICAL® 803 calculator | |
|---|---|
| Temperature measurement range | 2 to 180 °C |
| Temperature difference measuring range | 3 to 170 K |
| Temperature resolution on display | 0,01 °C |
| LCD resolution | 7 or 8 digits with a digit height of 10 mm |
| Resolution of the display | 0‘000,0001 / 00‘000,001 / 000‘000,01 / 0‘000‘001,0 (in kWh/MWh) |
| Energy display unit | MWh |
| Display unit Power | m3 |
| Display unit Volume | l/h |
| Display unit Flow rate | kWh |
| Standardprogrammierung GWF für Impulswertigkeit von Volumenmessteil mit Reed-Impulsgeber | 1 pulse = 2,5 liters |
| Protection class | IP65 |
| Environmental class | A and C according to EN 1434 |
| Ambient temperature | +5 to +55 °C (non-condensing) |
| Storage temperature | -20 to +60 °C |
| Display unit for consumption meters 1+2 | m3 |
| Weight | approx. 1.15 kg |
| Power supply | |
|---|---|
| Power supply | 230 V AC +15/-30%, 50/60 Hz |
| Power consumption | 7 W for powering 4 communication modules |
| Battery backup 1) | 3.65 V DC, 2 x AA lithium battery |
| Backup period | Up to 6 years (without maintenance), replaceable |
| Replacement interval | 10 years under normal operating conditions |
| Data logger (EEPROM) | 1400 hours, 460 days, 36 months, 20 years, 280 info codes (last 50 can be read on display) à l'écran) |
| Clock / Calendar | Clock, calendar, leap year compensation, key date |
1) The use of data modules, frequent data communication, and high ambient temperatures reduce battery life.
| Flow measurement | ULTRAFLOW® | Reed switch | 24 V active pulses |
|---|---|---|---|
| EN 1434 Impulse class | IC | IB | IA |
| Pulse input | 680 kΩ Pullup jusqu'à 3,6 V | 680 kΩ Pullup jusqu'à 3,6 V | 120 mA à 24 V |
| Pulse ON | 0,4 V en 1 ms | ‹ 0,4 V en › 300 ms | <4 V pour > 3 ms |
| Pulse OFF | 2,5 V en 4 ms | › 2,5 V en › 100 ms | > 12 V pour > 4 ms |
| Pulse frequency | ‹128 Hz | ‹ 1 Hz | ‹128 Hz |
| Electrical insulation | Non | Non | 2 kV |
| Maximum cable length | 10 m | 10 m | 100 m |
| Temperature sensor | Pt 500, 4-wire technology / glycol = Pt 500, 2-wire technology | ||
| Technical data Option cards | |
|---|---|
| Pulse inputs water meter | |
| Pulse input | 680 kΩ Pullup jusqu'à 3,6 V |
| Pulse ON | ‹ 0,4 V pour › 500 ms |
| Pulse OFF | › 2,5 V pour › 500 ms |
| Frequency | ‹ 1 Hz |
| Electrical insulation | Non |
| Maximum cable length | 25 m |
| Pulse outputs | |
| Pulse output type | Opto FET |
| External voltage | 1… 48 V DC/V AC |
| Current | <50 mA |
| Residual voltage | RON ≤ 40 Ω |
| Electrical insulation | 2 kV |
| Maximum cable length | 25 m |
Dimension diagram
