Seametrics EX100-200-Series - Manual (Page 3)

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.
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 of the EX mates with a standard female NPT fitting,
and can be directly threaded into ordinary saddles or threaded weld
fittings. The EX150 and 250 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.
GENERAL INFORMATION, FEATURES and SPECIFICATIONS
Page 1
FEATURES
Valve assembly for
hot tap installation
EX150/250
Brass or 316 Stainless Shaft
Lower Housing
Adapter mates with
1 1/2” FNPT threaded fitting
Compression Nut
Sensor Housing
Electrodes and Cap
Housing Screw (connect ground to one)
Cover or Electronics Module
Cable Strain Relief
EX110/210
3” to 48” (up to 72” optional)
316 SS or Brass
Hastelloy
PVDF
Cast powder-coated aluminum
Bronze (stainless optional) with bronze ball valve
EPDM
12-25 Vdc, 250 mA
12-25 Vdc, 40 mA average with 250 mA peaks
0.28 to 20 ft/sec (0.08 - 6.09 m/sec)
EX110/210
EX150/250
1-1/2” FNPT 2” FNPT
0˚ to 160˚ F (-17˚ to 72˚ C)
32˚ to 200˚ F (0˚ to 93˚ C)
200 psi (13.8 bar)
20 microSiemens/cm
+/- 1% of full scale
Square wave pulse, opto isolated, 550 Hz @ 20 ft/sec
6 mA max, 30 Vdc forward flow standard; reverse flow optional
Software, defaults to zero flow
Pipe Sizes
Materials Shaft/Fitting
Electrodes
Electrode Cap
Housing
Valve Assembly
(150/250 Only)
O-Ring
(150/250 Only)
Power Full Power
Low Power
Flow Range
Fitting Size Required
Temperature Ambient
Fluid
Pressure
Minimum Conductivity
Calibration Accuracy
Output
Empty Pipe Detection
SPECIFICATIONS*
*Specifications subject to change • Please consult our website for current data (www.seametrics.com).