Georg Fischer 8550 Specifications
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Signet 8550 Flow Transmitters
Check out the 9900 Transmitter
for your single channel needs
Member of the ProcessPro® Family of Instruments
Features
• 2 or 4 wire power
• Available with dual input & output
• 4 to 20 mA scaleable outputs
• Permanent & resettable totalizers
• Relay options available
• NEMA 4X enclosure with self-healing window
Panel Mount
Pipe, Wall, Tank and
Integral Mount
Signet 8550 Flow Transmitters are advanced
instruments that convert the signal from frequency and
digital (S3L) flow sensors into a 4 to 20 mA signal for
long distance transmission. Configuration flexibility is
maximized with dual input/output, two optional relays
for process control, two packaging options for integral/
pipe mount or panel installation, and scalability for
virtually any flow range or engineering unit. State-ofthe-art electronic design ensures long-term reliability,
signal stability, and simple user setup and operation.
• Output simulation for complete system testing
MEASURING EQUIPMEN
77CJ
Applications
• Flow Control and Monitoring
• Filtration or Softener Regeneration
• Effluent Totalization
• Pump Protection
• Feed Pump Pulsing
• Ratio Control
• Water Distribution
• Leak Detection
Specifications
General
Compatibility Signet Flow Sensors with frequency outputs
Accuracy ± 0.5% of reading
Display Alphanumeric 2 x 16 LCD
Update Rate 1 second
Contrast User selectable, 5 levels
Materials
Enclosure PBT resin
Keypad
Panel and Case Gasket
Window Polyurethane coated polycarbonate
Electrical
Power 12 to 24 VDC ±10%, regulated
-3 100 mA max.
Sensor Input Range 0.5 to 1500 Hz
Sensor Power
Current Output 4 to 20 mA, isolated, passive, fully adjustable and reversible
Max. Loop Impedance
Update Rate 100 ms
Accuracy ±0.03 mA
Relay Output
Mechanical SPDT contacts High, Low, Pulse, Off
Maximum Voltage Rating
Hysteresis User selectable
Maximum 400 pulses/min
Open-Collector Output
Hysteresis User selectable for exiting alarm condition
Maximum 400 pulses/min.
Environmental
Operating Temperature -10 °C to 70 °C 14 °F to 158 °F
Storage Temperature -15 °C to 80 °C 5 °F to 176 °F
Relative Humidity 0 to 95%, non-condensing
Enclosure NEMA 4X/IP65 (front face only on panel mount); field mount is 100% NEMA 4X/IP65
Shipping Weight
Standards and Approvals
Sealed 4-key silicon rubber
Neoprene
2-wire: 5 VDC ± 1% @ 1.5 mA
3 or 4 wire: 5 VDC ± 1% @ 20 mA
Optically isolated from current loop short circuit protected
50 Ω max. @ 12 V
325 Ω max. @ 18 V
600 Ω max. @ 24 V
30 VDC @ 5 A , 250 VAC @ 5 A resistive load
High, Low, Pulse, Off
Optically isolated, 50 mA max. sink, 30 VDC max. pull-up voltage.
0.325 kg 0.7 lb
CE, UL, CUL
RoHS compliant
China RoHS
Manufactured under ISO 9001 for Quality and ISO 14001 for Environmental Management
www.gfsignet.com
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