F-EFS2 Series EFS2 Electromagnetic FLOW SENSOR instructions
Table of Contents General Information Features, Specifications........................................................................................................................................Page 1 Installation Distorted Flows, Fitting Installation, Chemical Injection or Fertigation, Meter Installation, Positioning the Meter.............................................................................................................................................
INSTALLATION INSTALLATION DISTORTED FLOWS Distorted Flow Profile Caution: In chemical injection or fertigation applications, install chemical injection point downstream of magmeter, or far enough upstream to allow complete mixing of fluids before the meter. Faster Flow Causes Meter To Read High STRAIGHT PIPE RECOMMENDATIONS (X = pipe diameter) 10X 5X Reduced Pipe EFS2 10X 5X Fitting Installation.
INSTALLATION ELECTRICAL CONNECTIONS FULL PIPE RECOMMENDATIONS General Electrical Guidelines: Better Installation: Ensures full pipe Possible Problem: Allows air pockets to form at sensor • Whenever possible avoid running control cables in the same conduit with or bundled with AC power. Reverse Flow Output: Reverse flow output is available as an option. This open-collector isolated output does not supply power. It functions like a polarity-sensitive switch closure.
CONNECTIONS DIAGRAMS CONNECTIONS DIAGRAMS Counter or PLC RTI Display and Proportional Feed Counter or PLC Digital Input Max. 6 mA, 30 VDC Forward Output Sensor Input Power Pulse Scaled To Proportional Feed Metering Pump Max. 6 mA 30 VDC Reverse Output (-RFO) Forward Output EFS2 Series Reverse Output (-RFO) *See Dual RTI Diagram for an example of bidirectional connections. Pulse Pass-Thru EFS2 Series Power 4 to 20mA *See Dual RTI Diagram for an example of bidirectional connections.
OPERATION & Maintenance CAUTION & TROUBLESHOOTING Zero Adjustment. When the EFS2 Series is powered up and there is no flow, there should be no output pulses (or, if connected to the RTI, flow rate should read “0”). If there are pulses it may be necessary to adjust the flow meter under noflow conditions after it has been installed. This should only be done if the indicated flow is low, near the lower cutoff. Reverse Output Option Electrode Coating.
WARRANTY/RETURN Refer to "Terms and Conditions of Sale" in our catalog or on our website. Contact customer service to receive a Returns Goods Authorization number before shipping your product back for repair. Be sure to include a brief description of the problem plus any relevant applciation notes. D w ye r I nst r u m e nts, I n c. • 1 0 2 I n d i a n a H ighway 212 • M i c higan Ci t y, IN 46360 • U SA ( P ) 219. 8 7 9 . 8 8 6 8 • ( F ) 2 1 9 . 8 7 2 . 9 0 5 7 • 1.800.872.9141 • www.dw yer- inst.
