KARAT-Compact-223 is intended for energy measurement in almost all types of thermal installations where water is used as the energy-conveying medium. The heat meter employs the highly accurate ultrasonic technology. Every drop is measured due to the dynamic range of 250:1 reducing loss of distributed energy.
Technical data
| Temperature range | 0 °C…105 °C |
| Differential range | 3 K…95 K |
| Ambient temperature | 5…50 °C (indoors). Max. 30 °C for optimum battery lifetime |
| Protection class | IP 65 |
| Environmental class | Indoors (closed position), non-condensing |
| Medium temperatures | 3…95 °C |
| Medium in flow sensor | water |
| Storage temperature | 0…50 °C |
| Pressure stage | PN16 |
| Weight | 0.6 kg |
| Temperature sensor cables | 1.5 m (undemountable cables) |
| Type name |
Nominal flow, m³/h [qp] |
Maximum flow, m³/h [qs ] |
Transitional flow, m³/h [qt] |
Minimum flow, l/h [qi ] |
Threaded connection on meter |
Length |
| 223-15-1.5-IP-3I | 1.5 | 3 | 0.15 | 6 | G¾ | 110 |
| 223-15-1.5-IP-3I-М-Bus | 1.5 | 3 | 0.15 | 6 | G¾ | 110 |
| 223-15-1.5-IP-3I-LW | 1.5 | 3 | 0.15 | 6 | G¾ | 110 |
| 223-15-1.5-OP-3I | 1.5 | 3 | 0.15 | 6 | G¾ | 110 |
| 223-15-1.5-OP-3I-М-Bus | 1.5 | 3 | 0.15 | 6 | G¾ | 110 |
| 223-15-1.5-OP-3I-LW | 1.5 | 3 | 0.15 | 6 | G¾ | 110 |
| 223-20-2.5-IP-3I | 2.5 | 5 | 0.25 | 10 | G1 | 130 |
| 223-20-2.5-IP-3I-М-Bus | 2.5 | 5 | 0.25 | 10 | G1 | 130 |
| 223-20-2.5-IP-3I-LW | 2.5 | 5 | 0.25 | 10 | G1 | 130 |
| 223-20-2.5-OP-3I | 2.5 | 5 | 0.25 | 10 | G1 | 130 |
| 223-20-2.5-OP-3I-М-Bus | 2.5 | 5 | 0.25 | 10 | G1 | 130 |
| 223-20-2.5-OP-3I-LW | 2.5 | 5 | 0.25 | 10 | G1 | 130 |
Electrical data
| Calculator data | |||
| Energy units | MWh – kWh – GJ | ||
| Data logger | 1440 hours, 460 days, 144 months, 256 events | ||
| Display | LCD – 8 digits | ||
| Accuracy: Measuring heat energy Measuring flow: qi ≤ q < qt qt ≤ q ≤ qs Measuring temperature Measuring temperature differential | ±(2+12/Δt + 0,01Δqs/q)% ± 5 % ± 2 % ± (0,3 + 0,005Δt)% ± (0,09 + 0,005Δt)% | ||
| Data communication | |||
| Optical communication IRDA (standard) | Modbus RTU protocol,communication speed is 57600 Baud | ||
| M-Bus (option) | M-Bus protocols,communication speed is 2400 Baud | ||
| LoRaWAN 868 MHz (option) | LoRaWAN protocol, communication speed from 300 to 50000 baud. | ||
| Additional option | |||
| Connection for water meters | Connection of up to 3 pulse inputs for water meters. Cable length is 1.5 m. | ||
| Battery | |||
| Lithium cell | 3.6 VDC | ||
| Battery lifetime | 6/11 years* | ||
| *Frequent data communication and high ambient temperature reduce the battery lifetime. Extended battery is supplied optionally. | |||
| Temperature measurement | |||
| Temperature sensor | 2-Wire Pt500 | ||
| Temperature sensor cables | 1.5 m (undemountable cables) | ||
| t1 Inlet temperature | Measuring range 0.0…105.0 °C | ||
| t2 Outlet temperature | Measuring range 0.0…105 °C | ||
| Δt Heat metering | Measuring range 3.0…95.0 K | ||
Material
| Flow sensor case | CW617N brass |
| Calculator case | ABS; РС; PPS, 65% Mineral / Glass Reinforced; TPE; POM |
| Cables | PVC |
Modification
| KARAT-Compact | -223 | -XX | -XX | -XX | -XX | XXX | |
|---|---|---|---|---|---|---|---|
| Type | 223 | ||||||
| Connection | |||||||
| DN15 (G¾) | 15 | ||||||
| DN20 (G1) | 20 | ||||||
| Flow sensor | |||||||
| 1.5 m³/h | 1.5 | ||||||
| 2.5 m³/h | 2.5 | ||||||
| Installation of the flow sensor | |||||||
| Inlet pipe | IP | ||||||
| Outlet pipe | OP | ||||||
| Numbers pulse inputs | |||||||
| 3 pulse inputs | 3I | ||||||
| Communication | |||||||
| No communication option | - | ||||||
| M-Bus | M-Bus | ||||||
| LoRaWAN | LW |
Price
| Name | DN | Description | Price, € |
|---|---|---|---|
| Heat meter Karat-Compact 2-223 | 15 | Qn=1,5m³/h | 68.8 |
| Heat meter Karat-Compact 2-223 | 20 | Qn=2,5m³/h | 70.9 |
| Heat meter Karat-Compact 2-223 | 15 | Qn=1,5m³/h; 3 pulse input, M-bus or RS-485 | 74.9 |
| Heat meter Karat-Compact 2-223 | 20 | Qn=2,5m³/h; 3 pulse input, M-bus or RS-485 | 77.2 |
| Heat meter Karat-Compact 2-223 | 15 | Qn=1,5m³/h; 3 pulse input, LoRaWAN | 80.2 |
| Heat meter Karat-Compact 2-223 | 20 | Qn=1,5m³/h; 3 pulse input, LoRaWAN | 82.5 |