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EX115/215 Insert Electromagnetic Flow Meter

Seametrics Insert Flow Meter

Electromagnetic Insertion Flow Meter
PRODUCT DETAILS

  • Isolation valve allows installation and removal under pressure
  • Useful in large water utility pipe and other applications where shutdown is not an option
  • EX115 fits pipe from 3″ to 10″
  • EX215 fits pipe from 10″ to 48″
  • Meter extends only about 1/8 of pipe diameter, minimizing potential for clogging with debris
  • In most applications, installation tool not necessary due to small tube diameter
  • Available in brass or 316 stainless steel
  • Standard valve material is brass, with stainless optional

GENERAL INFORMATION

The complete lack of moving parts of the EX100/200-Series insertion flow sensor is the source of its reliability. Brass and stainless steel models withstand a variety of temperature, pressure, and chemical conditions. The EX-Series has no rotor to stop turning in dirty water and there are no bearings to wear out.  Like all magmeters, when used in chemical injection applications, these meters should be installed upstream of the chemical line (or far enough downstream to allow complete mixing of fluids before the meter). A rapidly reversing magnetic field is produced in the lower housing. As the fluid moves through this field, a voltage is generated that is measured and translated into a frequency signal proportional to flow rate.  This square wave signal can be sent directly to a PLC or other control or can be converted using any of the Seametrics family of indicators and converters.
A modular system of electronics can be attached directly to the flow sensor or remotely mounted.  The Seametrics FT420 provides full indication of rate and total, plus 4-20 mA output.  The AO55 provides blind 4-20 mA output, and the DL76 is a battery-powered data logger. The adapter fitting of the EX sensor is standard male NPT, and can be directly threaded into ordinary saddles or threaded weld fittings. The EX115 and 215 include an isolation valve, allowing hot-tap installation, or installation and removal under pressure; a bronze ball valve is standard, with a 316 stainless steel valve option if needed.Reverse flow output and immersibility are optional.

 

 
 
EX115/215 INSTALLATION

 

‘Hot tap’ EX meters are designed so they can be installed and serviced without depressurizing the pipe. Fitting Installation.  The EX115 and 215 sensors have a 2” NPT thread for compatibility with the 2” isolation valve.  Any fitting that provides matching NPT female thread may be used.  The installation procedure compensates for differences in fitting height. If initial installation is performed on an unpressurized pipe, cut a
minimum 1-3/4” hole in the pipe.  If possible, measure the wall thickness and write it down for use in depth setting.  Then install the threaded fitting (saddle, weldolet, etc.) on the pipe. If it is necessary to do the initial installation under pressure, any standard hot tap drilling machine with 2” NPT adapter, such as a Transmate or a Mueller, can be used.  Ordinarily, it is not necessary to use an installation tool, due to the small diameter tube the meter can be installed by hand at all but the highest pressures.
Meter Installation.
Remove the sensor flow meter unit from the valve assembly. Using a thread sealant, install the valve assembly on the pipe fitting.  If the initial installation is a pressure (“hot”) tap, remove the 1-1/2” x 2” adapter bushing at the back of the valve.  Thread the tapping machine on, open the valve, and tap using a minimum of 1-3/4” or maximum 1-7/8” cutter.  After retracting the machine and closing the valve, reinstall the flow sensor.  When the sensor is secure, open the valve and adjust depth setting (see diagram and instructions that follow). Be sure flow is in the direction of the arrow on the housing. Tighten locking collar and compression nut fully.
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