JC FB-3500

Electromagnetic Flow Meter
Johnson Controls | Part Number: FB3500
Electromagnetic flow meters are suitable formeasuring electrically conductive liquids in a wide variety of applications. Provides a single analog output for flow rate, a high resolution frequency output to drive peripheral devices, two scalable pulse outputs for totalization, a contact closure output for flow direction and an empty pipe alarm signal.
Ships in 4-6 weeks
Factory programmed and ready for use upon delivery. Highly efficient sensor design and continuous auto-zero function improve accuracy and sensitivity, particularly at low flow rates. The innovative hot tap adapter design allows for wet tapping pipes without interrupting flow.

FB-3500 Technical Data

+/- 1% of reading from 2 to 20 ft/s
+/- 0.02 ft/sec below 2 ft/sec

Sensing Method
Electromagnetic, no moving parts

Pipe Size Range
3” through 72” nominal

Input Power
20 - 28 VAC 50/60Hz, 250 mA maximum
20 - 28 VDC, 250 mA maximum

Liquid Temperature Range
15 to 250 F

Ambient Temperature Range

-20 to 150 F

Operating Pressure
400 PSI maximum

Pressure Drop
Less than 0.1 psi at 12 ft/s velocity in 3" and larger pipes

Materials of Construction
Wetted metal components - 316L stainless steel
Sensor head - Polypropylene
Electronics enclosure - Powder coat painted cast aluminum

Enclosure Rating
Weather-tight, NEMA 4

Electrical Connections
10' of PVC jacketed cable with 1/2” NPT conduit connection

Analog Output (Isolated)
Selectable: 4-20 mA, 0-10 V or 0-5 V

Frequency Output
0 – 15 VDC, 0 – 500 Hz

Pulse/Contact Closure Outputs
Isolated solid state dry contact
Contact maximum ratings: 100 mA, 50 VDC

Scalable Pulse Outputs (two)
Forward & Reverse Flow Totalization
Pulse Duration: 0.5, 1, 2 or 6 seconds

Directional Contact Output
Switch closed when flow is in direction of flow arrow on enclosure
Latches at 0.2 ft/s
Switches within 20 seconds of direction change

Master Alarm Output
Switch closed indicates alarm condition