Description
SITRANS FUE950 Ultrasonic Flow Transmitter
Overview---SITRANS FUE950
SITRANS FUE950 is a universal thermal energy calculator, which meets the requirements EN 1434 and has the MID and PTB K7.2 approval for energy metering with the media water.
Siemens has developed the SITRANS FUE950 for the SITRANS FUS380/FUE380 and alternatively for the MAG 5000/6000 or FST020. The SITRANS FUE950 has a modular construction. We can fit it with optional modules depending on the application when placing an order.
Benefits---SITRANS FUE950 7ME348
Basic functions---SITRANS FUE950
- Prepared for heating, cooling measurement
- Approval for MID for heat metering and PTB K7.2 for cooling
- High-accuracy thermal energy metering, meets EN 1434 requirements
- Measured temperature range -20 … +190 °C (-4 … +374 °F)
- Instantaneous values for energy/volume flow
- Battery or mains powered
- Battery version with battery lifetime of typically up to 10 years
- Optical data interface
- Real date and time
- Auto-detection of 2-wire or 4-wire temperature sensors
Additional functions---SITRANS FUE950
- Individual tariff functions
- Advanced functions for cooling/heating applications or the combination
- Memory for 24 periods (months, weeks, days)
- Data logger function
- Expandable functionality with 2 optional plug and play add-on modules
- Communication over M-Bus, RS 485 or RS 232
Add-on modules---SITRANS FUE950
- Plug-in module with 2 extra pulse inputs
- Plug-in module with 2 pulse outputs
- (4 ... 20 mA)Plug-in module with 2 passive current outputs
- Plug-in module with combination of input and output pulses
- Plug-in module for M-Bus communication
- (RS 232 or RS 485)Plug-in module for RS 232 or RS 485 communication
Application---SITRANS FUE950 7ME348
The SITRANS FUE950 is able to handle 3 kinds of applications, means energy calculation in:
- District heating applications
- Chilled water applications
- Combined cooling/heating applications
Design
SITRANS FUE950 has an easy-read 8-digit LCD display with associated pictograms for the various functions. Siemens have designed the display for several applications, so it will show some figures/symbols that normal district heating applications do not use.
FUE950 has a push button for simple operation and provides user-friendly control via the various display menu loops. The display always configures itself for the chosen application and the selected display settings.
The integrator has an IP54 plastic housing and is designed for wall or panel mounting. The housing comes with prepared rubber gaskets cable entries for fast and easy installation.
Operation menu loop structure
The FUE950 display has six menu loops. Engineers have numbered the menus in the display from 1 to 6. Some display menus contain two values (up to a maximum of seven). We show these values alternately at 4 - second intervals.
The main menu loop no. 1 with the current data, e.g. for energy, volume, flow rate and temperature, is preprogrammed as default setting.
In the combined heating/cooling configuration the menu loop no. 5 (tariff menu loop) will be activated additionally.
Displays and output pulses
Units: MWh, GJ, Gcal, MBtu, m3, gal, m3/h, GPM, °C, °F and kW; all decimal points are statically (the unit "gal" is shown with factor x 100).
Use the display unit and the last fractional digit for the pulse outputs.
Function
Technical principle
Calculation of energy is based on the following formula:
Energy = Volume x (THot - TCold) x Kfactor (Ti)
Volume: Volume [m3] of a given amount of volume pulses
THot: Measured temperature in the hot line
TCold: Measured temperature in the cold line
Kfactor (Ti): Thermal coefficient of media enthalpy and heat content
The energy calculation is made by a counter and depends on temperature difference, pulse input frequency and legal requirements.
The calculator always carries out at least one energy calculation every 2 seconds. If the connected flowmeter has not sent enough pulses the energy calculation and flow indication is also based on the 8 seconds value.
Data memory
The FUE950 has a history memory of 24 periods (months, weeks, days). The following values are stored monthly, weekly or daily in the EEPROM on the programmed day of 1…31 (via software tool).
To obtain the most competitive quote, please contact our ANTLETS team.
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