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k i GENERAL INFORMATION II i The EX80-Series are electromagnetic insertion flow Inser#ion Depth. Like all insertion flow sensors, the E sensors for use in conductive liquids in pipe sizes 1" to EX80i Series extend into the pipe and measure the velocity 8" (25mm to 200 mm.) Lacking moving parts, they are of ithfluid 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. flo' 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 tolerance for pulsating flows. This makes them a good shape of the velocity profile changes as the rate increases. F 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 adjb I table, they must be purchased with fittings the EX80 design. The basic flow sensor has one output, appropnate to the application.The EX81 is sized for fittings �+ which is pulse proportional to flow rate.The F1`420 module of 3". The EX82 is for fittings of 4"to 8". Each fitting can be added to provide indication, 4-20 mA, and flow insures that the flow sensor is installed at the correct point. rate setpoints.The A055 adds 4-20 mA analog only(blind Evety flow sensor and every tee fitting is wet calibrated. transmitter). The F510 is a flow switch module, and the Saddle fittings are normally not wet calibrated, because DL75 is a datalogger. they are field-installed on a pipe. In PVC however it is posslible to order a saddle pre-installed on a standard 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 calibated. 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. Output. The basic pulse signal is compatible with many I controls, with PLC's and irrigation ation or water treatment g controllers being the most common. For these applications it is sometimes necessary to add a pull-up resistor, if the , controller is not designed for a current-sinking input. See i ' the section on "Connecting to PLC's and other Controllers" • before connecting to a non-SeaMetrics control. EXSO PARTS DIAGRAM Cover or Module . a • ' I } Housing Screw (connect ground to one) l Cable-Seal Strain Relief i 1 f Lower Housing Tk i Retaining Slot ny O-Ring Ili f r { 1. Sensor .w . Page 1 1 •