The dual channel flowmeter SITRANS FUS380 is powered by batteries or AC power. It can measure water flow in regional heating equipment, local area networks, heat source plants, heat exchange stations, refrigeration equipment, and other conventional water applications.
The SITRANS FUS380 instrument complies with the thermal measurement standards EN 1434, Level 2 and OIML R752, and the measurement parameters are not affected by operation. The certified flowmeter is named SITRANS FUE380.
The SITRANS FUS380 and SITRANS FUE380 instruments are completely identical in terms of process technology.
By combining with an energy calculator and a pair of temperature sensors, SITRANS FUE380 serves as a part of the energy meter system. For this purpose, Siemens provides the energy calculator SITRANS FUE950.

• Battery powered for 6 years
In the event of communication power failure, optional battery backup is available
Quick measurement frequency of 20 Hz/0.5 Hz (230 V AC/battery)
Single key operation, direct display
The principle of dual channel measurement can achieve the best accuracy
• Integrated or detachable installation
• Can measure any water quality and have no conductivity requirements
• No pressure drop
• Long term stability
Digital output with photoelectric isolation, convenient for connecting to computers (without potential impact)
• Dynamic measurement range: up to 1:200
• MODBUS RTU/RS 232, RS 485

SITRANS FUS380 is mainly used for measuring water flow or measuring hot or cold water in energy metering systems.
Combining an energy calculator and a pair of temperature sensors, SITRANS FUE380 can be used as part of an energy meter. For this purpose, Siemens provides the energy calculator SITRANS FUE950.

The dual channel design of SITRANS FUS380 ensures maximum measurement accuracy even under insufficient inlet straight pipe conditions. The flowmeter consists of a flow sensor pipeline, 4 transducers/transducer cables, and a signal converter SITRANS FUS080.
Optional integrated or split installation, with a distance of up to 30 meters between the flowmeter and signal converter. When ordering an integrated instrument, the transducer cable is installed properly and ready to use.
The maximum applicable temperature for integrated installation is 120 ° C. The sensor must be isolated to prevent the signal converter from being heated. The signal converter complies with IP67/NEMA 4X/6 protection level.

The digital output of a flow meter is usually used as an input for an energy calculator or a remote display digital system.
SITRANS FUS380 has two independently selectable digital output functions.
When placing an order, the pulse output setting can be specified.
If the flowmeter is used as part of a sealed energy delivery instrument system, no further certification is required except for local certification on the flowmeter.

Design a dual channel sensor with flange and integrated transducer for pipeline design, and perform real flow calibration in the factory
Nominal size (welded type) DN 50, 65, 80, 100, 125, 150,200, 250, 300, 350,400,500,600,700,800,900,1000,1200
Pressure rating PN 16, PN 25, PN 40 EN 1092-1
DN 50~DN 80 copper
DN 100~DN 1200 carbon steel
Pipeline material Carbon Steel EN 1.0345/p235 GH
The transducer design is integrated and welded onto the pipeline
The transducer material is stainless steel AISI 316
Storage -40...+85 ° C
Liquid temperature • Split: 2... 200 ° C
• Integrated: 2... 120 ° C
Protection level sensor connection IP67/NEMA 4X/6
Maximum flow velocity DN 50... 1200: 9 m/s (295 ft/s)
Enclosure IP67 (NEMA 4X/6) EN 60529 DIN 40050
The ambient temperature is 0 .. 60 °C
Storage temperature -40 degrees Celsius +85 ° C (including battery)
Integrated installation on sensor: up to 120 ° C
Separate installation: up to 30 meters away from the signal converter
Mechanical vibration IEC 68-2-6 varies sinusoidally in all directions by 2 g, 1... 800 Hz
Design glass fiber reinforced polyamide
Power battery: replaceable 3.6V lithium battery pack, 32 Ah
AC power: 87... 265 V AC (50... 60Hz)
Measurement rate battery mode: 0.5 Hz
AC power supply: 20 Hz
Backup mode: 0.5 Hz (in case of AC power failure)
Digital output with two passive outputs, electrically isolated MOS relay type A and B, maximum ± 35 V AC/DC, 50 mA
Maximum pulse frequency 100 Hz
Alarm display channel 1 (F1), channel 2 (F2), low battery display (F5), qs overload (F6), pulse overflow (F7)
The cable length is up to 30 meters between the signal converter and the sensor
EMC • Anti emission interference EN 61000-6-4
Anti noise EN 61000-6-2
Certification EN 1434 and OIML R75 Class 2 (EN version from 1. july 2002)