EX80 Series at es 6/ 14 /0 4 to 5/ 05 ) AR CH IV ED (In cl ud es D EX81 EX82 The Leader in Flow Meter Value.
TABLE OF CONTENTS General Information Modularity, Output, Inser tion Depth, Fittings, Par ts Diagram ........................................ Page 1 Installation Distor ted Flows, Fitting Installation, Meter Installation, Positioning the Meter ................ Page 2 Straight Pipe Recommendations ...................................................................................... Page 3 Correct and Incorrect Installations ..................................................................................
GENERAL INFORMATION The EX80-Series are electromagnetic inser tion flow sensors for use in conductive liquids in pipe sizes 1” to 8” (25mm to 200 mm.) Lacking moving parts, they are well suited for applications which have particulates in the fluid and are therefore problematic for impellers or turbines. Other advantages are insensitivity to viscosity and tolerance for pulsating flows. This makes them a good choice with fluids with varying viscosity and with air-driven diaphragm pumps. Fittings.
INSTALLATION DISTORTED FLOWS Faster Flow Causes Meter To Read High Meter Installation. After the meter fitting is installed in the pipeline, the meter can be installed in the fitting. After noting the direction of the flow arrow, press the meter into the fitting as far as it will go. Retain the meter in place by inserting the u-pin. The pin can be installed from either side. It may be necessary to rotate the probe back and forth slightly to start the pin into the slots on the probe.
INSTALLATION STRAIGHT PIPE RECOMMENDATIONS (x = diameter) 10X Reduced Pipe 5X D E V I H C R A Two Elbows In Plane 5X /0 4 to 5/ 05 ) 10X 20X 5X es 6/ 14 Two Elbows, Out Of Plane Spiral Flow 5X es (In cl ud Expanded Pipe D at 20X 30X Propellor Meter 50X Swirling Flow Partially Open Butterfly Valve Page 3
INSTALLATION CORRECT AND INCORRECT INSTALLATIONS CORRECT INCORRECT AR CH IV ED Ensures full pipe INCORRECT 05 ) Allows air pockets to form at sensor /0 4 to 5/ CORRECT Keeps pipe full at sensor D at es 6/ 14 Post-valve cavitation can create air pocket CORRECT (In cl ud es INCORRECT Air can be trapped Allows air to bleed off Caution: These flow sensors are not recommended for installation downstream of the boiler feedwater pump where installation fault may expose the flow sensor to b
ELECTRICAL CONNECTIONS General Electrical Guidelines: Grounding Guidelines: • Whenever possible avoid running control cables in the same conduit with AC power. Use shielded control cable where this type of installation is necessary. • If using shielded cable, be sure that one end is grounded • Avoid routing flow sensor cables in close proximity to a variable frequency drive.
CONNECTIONS DIAGRAMS COUNTER OR PLC + 11 - 24 Vdc 250 mA max. _ Power Input 11 - 24 Vdc 5 mA max. + _ Pulse Output Frequency Input 25 hz per ft/sec 11 - 24 Vdc/Vac 100 mA max.
CONNECTIONS DIAGRAMS FT420 DISPLAY AND PROPORTIONAL FEED _ 24 Vdc Power + FT420 Sensor Input Power Input + _ Pulse Scaled + _ + S _ Pulse Output + _ To Proportional Feed Metering Pump + _ Direction Output AR CH IV ED + _ EX SERIES Pulse Pass-Thru 5/ 05 ) Power 4-20mA FT420 DISPLAY AND 4-20 mA OUTPUT + /0 4 24 Vdc Power to _ Sensor Input Power Input + _ 14 + S _ 6/ Pulse Output + _ Direction EX SERIES at es Unused D _ Pulse Scaled + _ + _ + _ Pulse Pass-Thru Power 4-
OPERATION & MAINTENANCE When the EX81 or 82 is powered up and there is no flow, there should be no output pulses (or, if connected to the FT420, flow rate should read “0”). If there are pulses... Zero Adjustment. In some cases it may be necessary to adjust the flow meter under no-flow conditions after it has been installed. LOCATION OF K-FACTOR AR CH IV ED To perform the adjustment, after determining that there is no flow, short between the two pins marked “Zero Adj.
TROUBLESHOOTING Probable Cause Try...
(In cl ud es D at es 6/ 14 /0 4 to 5/ 05 ) AR CH IV ED 19026 72ND AVE SOUTH, KENT, WA 98032 USA (P) 253.872.0284 LT-11792-C 06-14-04 (F) 253.872.0285 WWW.SEAMETRICS.COM 1.800.975.
