Technical data
10.2 Battery
SITRANS FUS080 transmitter
62 Operating Instructions, 07/2012, A5E03059912-02
Description Specification
Communication
IrDA on display panel (MODBUS RTU protocol)
Optional: Separate add-on serial communication modules
MODBUS RTU RS 232 or RS 485 (recommended for 230 V
versions only)
Outputs (standard)
Two passive, galvanically isolated open-drain MOS outputs
(output A and B)
Max. ±35 V, 50 mA
Output A: Preset to pulse output for forward flow (default: 100
l/pulse)
Output B: Preset to alarm for present failure
Pulse width: 5, 10, 20, 50, 100, 200, 500 ms (default: 5 ms)
Max. pulse frequency (for 5 ms pulse width): 100 Hz at Qmax
setting (105% of Qs)
Output (option)
Fieldbus communication: MODBUS RTU protocol
Separate add-on serial communication modules MODBUS
RTU RS 232 or RS 485
EMC Emission EN 61000-6-4
Immunity EN 61000-6-2
Transmitter weight 1.5 kg (3 lb)
10.2 Battery
Battery types
Replaceable 3.6 V LiSOCl (Lithium Thionyl Chloride) dual battery pack 32 Ah
Single battery 16 Ah as back-up battery for mains-powered version with back-up battery
Note
The batteries are not rechargeable; they should be replaced at least every 6 years.
Consumption and battery operation time calculation
For battery versions, the battery operation time depends on the connected battery pack as
well as the operation conditions of device.
Every 5 minutes the advanced power management system of the transmitter calculates the
battery consumption and the remaining battery operation time.
For battery versions, only the internal battery pack has a nominal capacity of 33 Ah giving a
typical operation time of 6 years in a revenue application.
The ambient temperature of the transmitter its also influence the battery capacity.
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