The meter is designed for commercial metering of the heating and cooling energy when the heat transfer medium is water; it is used in the district cooling facilities in residential buildings, companies, and institutions.
ADVANTAGES:
- Heating and cooling energy is stored in separate registers.
- Possibility to use rate tariffs.
- Programmable dates for annual and monthly reports. Registration of maximal monthly parameter value, etc.
- Provided with remote data transfer modules with M-Bus, CL or wireless radio link interfaces.
General
| Application | - | Heating or bifunctional (heating /cooling) | Heat-transfer
fluid: glycol-free water |
| Approval | - | MID (DE-13-MI004-PTB008) |
| Accuracy class | - | Class 2 |
| Ambient temperature | °C | +5 ... +55 (<35 has a positive effect on battery lifetime) |
| Storage temperature | °C | +5 ... +55 | max. -20 ... +60 (max. 4 weeks) |
| Humidity | % | 93 maximum |
| Battery supply | - | 3.6 VDC 2xAA-Cell |
| Lithium content | g | 2 x 0.7 |
| Temperature sensor type | - | Pt 500, 2-wires: Ø 5.2 mm |
| Cable length of temperature sensor | m | 1.45 |
| Test possibilities | - | via display |
| Volume measuring cycle | s | 2 |
| Temperature measuring cycle | s | 16 (long radio telegram + Mbus) / 32 (short radio
telegram) |
| Power calculation cycle | s | 2 |
Calculator
| Protection class | - | IP65 |
| Environmental class-mechanical | - | M1, M2 |
| Environmental class electromechanical | - | E1, E2 |
| Calculator | - | Removable, with 0.45m cable to flow sensor |
| Absolute temperature range | °C | +1 ... +105 (+130 in option) |
| Starting temperature difference ΔΘ | K | 0.125 |
| Min. temperature difference ΔΘmin | K | 3 (MID approved) |
| Max. temperature difference (heating) ΔΘmax | K | 127 (MID approved) |
| Extensive readable data memory | - | 2 predefined history logs for 720 daily (Log-1) and 120
monthly (Log-2) values of volume and error hours;
additionally event memory( error log) |
Flow Sensors
| Dynamic range (Qp/Qi) | - | 1:100 |
| Mounting position flow sensor | - | Any position, calming section not necessary |
| Temperature range (heating/ cooling) | °C | +5 ... +105* |
| Temperature range (heating / cooling) | °C | +5 ... +105 |
| Protection class | - | IP54 (heating) - IP68 (heating / cooling) |
| +130°C in option | | |
Display
| Display indication | LCD-8 digit |
| Units | kWh - m³ - °C - m3/h* |
| Total values | 99,999.999 |
| Values displayed (main loop) | Energy - Volume - Flow - Power - Temperature - Differential temperature -
Operating days - Error Status - Display test |
| *MWh-GJ optional | |
M-Bus
| M-Bus | Auto baud detect (300 and 2,400 bauds); galvanically insulated |
| Data transmission | Data reading via 2 non-polarized wires (1.45 m) |
| Battery life-time | Up-to 12 years* |
| *Under standard conditions of use and temperature | |
Wireless M-Bus (Radio)
| Frequency/band | 868 MHz |
| Type of radio telegram | Open Metering Standard (OMS) |
| Transmission data updating | Online - no time delay between value measurement and data transmission |
| Data transmission | Unidirectional |
| Battery lifetime | Up to 12 years* |
| Sending interval options | Short telegram: 33 sec. for heating, 43 sec. for heating/cooling | Long
telegram: 64 sec. for heating, 91 sec. for heating/cooling |
| *Under standard conditions of use and temperature | |
Flow Sensor Technical Data
| Nominal Flow rate | qp | m³/h | 1.5 | 2.5 |
| Nominal diameter | DN | mm | 15 | 20 |
| Overall length | L | mm | 110 | 130 |
| Starting flow rate | | l/h | 2.5 | 4 |
| Minimum flow rate | qi | l/h | 15 | 25 |
| Maximum flow rate | qs | m³/h | 3 | 5 |
| Overload flow rate | | m³/h | 4.6 | 6.7 |
| Operating pressure | PN | bar | 16 | 16 |
| Kvs value (Δp=Q2/Kvs2) | | | 4.33 | 7.91 |
| Pressure loss at qp | Δp | mbar | 120 | 100 |
Dimensions
| Nominal flow rate | qp | m³/h | 1.5 | 2.5 |
| Nominal diameter | DN | mm | 15 | 20 |
| Overall length | L | mm | 110 | 130 |
| Overall length with coupling | L2 | mm | 190 | 230 |
| Length of calculator | L1 | mm | 90 | 90 |
| Height | H | mm | 14.5 | 18 |
| Height | H1 | mm | 55 | 58 |
| Height of calculator | H2 | mm | 27 | 27 |
| Height of calculator | H3 | mm | 40 | 40 |
| Width of calculator | B | mm | 135 | 135 |
| Connection thread on meter | | inch | G¾B | G1B |
Connection thread of
coupling | | inch | R½ | R¾ |
| Weight | | kg | 0.70 | 0.77 |
