Calculator
CF-800
Product categories
Heat / Cooling
Calculator
Heat / Cooling
System technology
Smart Building
Your benefits
- Large display:
Easy to read - Backup battery with a backup period of 1 year:
To ensure time and metering values are not lost during a power outage - Option cards for diverse functionalities:
- Economical basic device
- Additional functionalities feasible
Applications
- Metering of heat and/or cooling consumption in building management
- Energy measurement for local or remote reading
- Application for bulk measuring points
- Connection to management systems
Options
- Special version for combined heat/cooling metering (special programming)
- Option cards Module 1
- M-Bus
- LonWorks, FTT-10A
- Modbus RTU (RS485) - Option card COMIO Module 2
- 4 active, freely programmable analogue outputs 0/4...20 mA /
- 2 alarm relay outputs or 2 water meter inputs / M-Bus
Downloads
Properties
- Electronic calculator
- LCD-resolution 7 digits
- Non-volatile memory EEPROM
- Temperature measuring range 0 - 180 °C
- Temperature sensor Pt 100, two- or four-wire technology
- Standard EN 1434
- 24 month register
- Mains supply 230 V AC
- Maximum values with time stamp
- Can be combined with the following volume measuring meters:
- Impeller meters with reed-pulser
- MID - Pulse outputs
- Wall-mounted installation
Conformity according European Measuring Instrument Directive (MID)
Product information
Technical data
| Technical data calculator CF-800 | |
|---|---|
| Temperature measuring range | 0 to 180 °C |
| Temperature difference | 3 to 160 K |
| Temperature resolution on display | 0,1 °C |
| LCD resolution | 7 digits |
| Max. display resolution | ■ 9’999,999 ■ 999’999,9 ■ 99’999,99 ■ 9’999’999 |
| Indication device energy | MWh |
| Indication device volume | m3 |
| Indication device flow | m3/h |
| Indication device power | kW |
| Protection class | IP54 acc. DIN 40050 (dust and splash-proof) |
| Environment class | C acc. EN 1434 |
| Environment temperature | +5 to +55 °C (intern installation) |
| Storage temperature | -10 to +60 °C |
| EMV | Protected acc. EN 61010-1, 61000-6-2 (interference resistance for industrial sectors), 61000-6-3 (emitted interference for residential sector, business and commercial sector as well as small businesses) |
| Double insulation | Protective class II acc. CEI 60364-4-443 |
| Power supply | |
|---|---|
| Mains supply | 230 V AC +10/-15%, 50 Hz ± 2%, max. 8 VA |
| Battery backup | 3 V DC, 2,5 Ah, lithium battery |
| Backup period | 1 year (without supply), can be replaced Extended options are deactivated during the power outage period (COMIO option card) |
| Maximum values | |
|---|---|
| Parameters | Power, flow and inlet temperature (monthly maximum value on display with time stamp) |
| Period for averaging | 15 min |
| Internal memory | 24 month maximum values |
| Inputs from volume measuring meter | |
|---|---|
| Signal | Reed contact, Open collector, Open drain or static contactor |
| Pulse frequency | max. 128 Hz |
| Resistor Ron / Roff | ≤ 150 Ω / ≥ 2 MΩ |
| Cable diameter | 3,5 - 8 mm |
| Wire cross-section | 0,2…1,5 mm2 |
| Pulse outputs | |
|---|---|
| Heat energy | Output: Heat energy + volume |
| Heat and cooling energy | Output: Heat and cooling energy |
| Pulse output | Characteristic according EN 1434-2 - 7.1.3 class OA |
| Pulser | Galvanically isolated optocoupler, bi-polar output |
| Sampling current | max. 20 mA (status ON) |
| Sampling voltage | max. 30 V DC (status OFF) |
| Output frequency | max. 1 Hz |
| Pulse length | 250 ms ± 8% |
| Resistor Ron | max. 20 Ω |
| Resistor Roff | min. 10 kΩ |
| Cable diameter | 3,5 - 8 mm |
| Wire cross section | 0,2…1,5 mm2 |
| Max. cable length | 30 m |
| Pulse value | According to the smallest digit on the display |
| Option card M-Bus (Module 1) | |
|---|---|
| M-Bus standard load | 1 standard load = 1,5 mA power consumption |
| Protocol | M-Bus according EN 1434-3 |
| Standard transmission rate | 2400 Baud |
| Option card LonWorks (Module 1) | |
|---|---|
| Protocol | LonTalk® |
| Power supply | 24 V AC/DC |
| Power input | 1 VA |
| Option card COMIO (Module 2) | |
|---|---|
| 4 active analogue outputs | |
| Parameters | Tr, Tv, Q, P, Δt |
| Output type | 0…20 mA or 4…20 mA |
| Output load | max. 300 Ω (per output) |
| Accuracy | 2% of the displayed value |
| Resolution | 0,5% at 0…20 mA 0,65% at 4…20 mA |
| 2 alarm relay outputs | |
|---|---|
| Parameters | Tr, Tv, Q, P, Δt, error message, power supply missing |
| Relay characteristic | NC contact or NO contact |
| Contact protection | RC element with 100 Ω / 0,1 µF |
| Switching voltage | max. 50 V |
| Switching current | max. 200 mA |
| 2 water meter inputs (alternative to 2 alarm relay outputs) | |
|---|---|
| Pulse input | Characteristic according EN 1434-2 - 7.1.5 class IC |
| Pulser | Reed contact, Open collector, Open drain or static contactor |
| Sampling voltage | max. 6 V |
| Contact current | max. 0,1 mA |
| Frequency | max. 5 Hz |
| Pulse length | min. 100 ms |
| Resistor Ron | max. 10 kΩ |
| Max. cable length | 10 m |
| Pulse values | 1 - 250 l/imp. (programmable, standard 10 l) |
| M-Bus | |
|---|---|
| M-Bus standard load | 1 standard load = 1.5 mA power consumption |
| Protocol | M-Bus in accordance with EN 1434-3 |
| Standard transmission rate | 2400 Baud |
| Temperature sensor | |
|---|---|
| Temperature sensor | Pt 100 (2- or 4-wires) |
Dimension Diagram
Calculator CF-800
