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DESCRIPTION
ONICON insertion turbine flow meters are suitable for measuring electrically conductive water-based liquids. The FB-1210 model provides non-isolated 4-20 mA and 0-10 V analog output signals that are linear with the flow rate as well as a binary (digital) dry contact output for flow direction.
APPLICATIONS
• Primary/secondary decoupling loop (bypass)
• HVAC thermal storage tank
• Domestic water tank charge/discharge
GENERAL SPECIFICATIONS
ACCURACY
± 0.5% of reading at calibrated velocity
± 1% of reading from 3 to 30 ft/s (10:1 range)
± 2% of reading from 0.4 to 20 ft/s (50:1 range)
SENSING METHOD
Electronic impedance sensing (non-magnetic and non-photoelectric)
PIPE SIZE RANGE
2½” through 72” nominal diameter SUPPLY VOLTAGE
24 ± 4 V AC/DC at 90 mA LIQUID TEMPERATURE RANGE
Standard: 180° F continuous, 200° F peak High Temp: 280° F continuous, 300° F peak Meters operating above 250° F require 316 SS
construction option
AMBIENT TEMPERATURE RANGE
-5° to 160° F (-20° to 70° C) OPERATING PRESSURE
400 PSI maximum PRESSURE DROP
Less than 1 PSI at 20 ft/s in 2½” pipe, decreasing in larger pipes and lower
velocities
OUTPUT SIGNALS PROVIDED
Directional Contact Output
Isolated solid state dry contact
Contact rating: 100 mA, 50 V
Switch closed when flow is in direction of arrow Latches at 0.18 ft/s
Switches within 20 seconds of direction change
Analog Output (non-isolated)
Voltage output: 0-10 V (0-5 available) Current output: 4-20 mA
Frequency Output
0 – 15 V peak pulse, typically less than 300 Hz
(continued on back)
CALIBRATION
Every ONICON flow meter is wet calibrated
in a flow laboratory against primary volumetric standards that are directly traceable to N.I.S.T. A certificate of calibration accompanies every meter.
FEATURES
Unmatched Price vs Performance - Custom calibrated, highly accurate instrumentation at very competitive prices.
Excellent Long-term Reliability - Patented electronic sensing is resistant to scale and particulate matter. Low mass turbines with engineered jewel bearing systems provide a mechanical system that virtually does not
wear.
Industry Leading Two-year “No-fault” Warranty -
Reduces start-up costs with extended coverage to include accidental installation damage (miswiring, etc.) Certain exclusions apply. See our complete warranty statement for details.
Installation Flexibility - Patented dual turbine models deliver outstanding accuracy in short
pipe runs.
Simplified Hot Tap Insertion Design - Standard on every insertion flow meter. Allows for insertion and removal by hand without system
shutdown.
