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GENERAL INFORMATION The EX80-Series are electromagnetic insertion flow Insertion Depth. Like all insertion flow sensors, the sensors for use in conductive liquids in pipe sizes 1" to EX,801-Series extend into the pipe and measure the velocity 8" (25mm to 200 mm.) Lacking moving parts, they are of Ithe fluid in a particular area of the pipe. The chosen well suited for applications which have particulates in the insertion depth is the "critical point", or the area of the fluid and are therefore problematic for impellers orturbines. flow stream which maintains the average velocity across a Other advantages are insensitivity to viscosity and wide range of flow rates. This is necessary because the ail i tolerance for pulsating flows. This makes them a good shape of the velocity profile changes as the rate increases. I i choice with fluids with varying viscosity and with air-driven (It transitions from a "bullet" to more of a "plug" shape). { diaphragm pumps. € Fittings. Since the EX80-Series sensors are not Modularity. Simplicity and modularity are at the core of adjustable, they must be purchased with fittings the EX80 design. The basic flow sensor has one output, appropriate to the application.The EX81 is sized for fittings ' which is pulse proportional to flow rate.The FT420 moduleof 1"�to 3".The EX82 is for fittings of 4"to 8". Each fitting can be added to provide indication, 420 mA, and flow insures that the flow sensor is installed at the correct point. rate setpoints. the A055 adds 420 mA analog only(blind Every flow sensor and every tee fitting is wet calibrated. transmitter). The FS1O is a flow switch module, and the Saiddlle fittings are normally not wet calibrated, because DL75 is a datalogger. they are field-installed on a pipe. In PVC however it is xpossible to order a saddle pre-installed on a standard E Any of these modules except the DL75(which is wall-mount length of pipe, in which case the entire assembly is wet- only)can be ordered pre-installed on the flow sensor or in calibrated. For all other saddles, the k-factor (pulses per a wall mount housing, and any can be retrofitted to the gallon)is established through testing with various standard EX80-Series sensor in the field. schedules of pipe and provided with the saddle. 3 Output. The basic pulse signal is compatible with many j controls, with PLC's and irrigation or water treatment controllers beingthe most common. Forthese applications f it is sometimes necessary to add a pull up resistor, if the controller is not designed for a current-sinking input. See the section on "Connecting to PLC's and other Controllers" { before connecting to a non-SeaMetrics control. EX80 PARTS DIAGRAM i Cover or Module I ' Housing Screw (connect ground to one) I !I Cable-Seal Strain Relief �- - -- r I i t ! Lower Housing i ,I Retaining Slot O-Ring l 1 . w Page 1