Seametrics EX110, EX210, EX150 and EX250 Insertion Magmeters

The EX100/200-Series are adjustable depth insertion magmeters that fit 3” to 48” pipe (up to 72” optional). The complete lack of moving parts of the EX100/200-Series is the source of its reliability.


The EX100/200-Series are adjustable depth insertion magmeters that fit 3” to 48” pipe (up to 72” optional). The complete lack of moving parts of the EX100/200-Series 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). Adapters mate with standard 1-1/2” (11x/21x) or 2” (15x/25x) FNPT threaded fittings such as saddles and weldolets which may be purchased either locally or from Seametrics.

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 installed directly on the flow sensor or mounted remotely. The FT430 (externally powered with pulse) and the FT440 (loop powered), both provide digital rate and total displays, as well as a programmable pulse; the FT440 also provides a 4-20 mA analog output. Built-in data logging is available as an option for
secure flow logging.

The “hot-tap” models (EX15x/25x) can be installed or serviced without shutting down the line by means of a 2” full-port isolation valve that comes with a nipple for installation on the pipe fitting; a bronze ball valve is standard, with a 316 stainless steel valve option if needed. In most circumstances, no special tool is required.

Reverse flow output and immersibility are optional.




Seametrics, a member of the TASI Flow Group, is a designer and manufacturer of a variety of flow metering and submersible sensor products. Since 1990, we have provided innovative solutions to users in irrigation, fracking, water & wastewater, environmental, and processing applications. Our products have a reputation for durability and accuracy at a competitive price and are sold through our network of domestic and international distributors.

Located just south of Seattle, our Kent, WA factory is home to both our engineering and production groups. We employ just-in-time manufacturing methods and have a high commitment to continuous improvement as demonstrated by our ISO 9001 quality management system. Our focus on innovation, product value and customer accessibility has resulted in over two decades of continuous growth. Seametrics is dedicated to helping conserve the world’s most valuable resource by providing our customers with precision flow meter and environmental sensor products.


  • No moving parts
  • Durable
  • Adjustable depth
  • Hot-tap available
  • Brass or stainless steel
  • Immersibility available
  • Reverse flow output available


  • 3” – 48” pipe (up to 72” optional)
  • Clean or “dirty” liquids
  • Conductive liquids
  • Municipal
  • Industrial
  • Irrigation


Pipe Size3” to 48” (up to 72” optional)
PowerFull Power: 12 – 24 Vdc, 250mA
Low Power: 12 – 24 Vdc, 40mA average with 250mA
MaterialsHousingPowder-coated cast aluminum
Tubing/Fitting/Sensor HousingBrass or 316 Stainless Steel
Electrode CapPVDF
O-Ring (15x/25x onlyEDPM
Valve Assembly for:Bronze (stainless optional) with bronze ball valve
Fitting Size Required11x/21x: 1.5” FNPT15x/25x: 2” FNPT
Pressure200 psi (14 bar)
TemperatureAmbient0˚ to 160˚ F (-17˚ to 72˚ C)
Fluid32˚ to 200˚ F (0˚ to 93˚ C)
Minimum Conductivity20 microSiemens/cm
Flow Velocity0.28 – 20 ft/sec (0.08 – 6.09 m/sec)
Accuracy± 1% of full scale
OutputSquare wave pulse, opto-isolated, 500 Hz @ 20 ft/sec
6 mA max, 30Vdc forward flow standard; reverse flow optional
Empty Pipe DetectionSoftware, defaults to zero flow
CableStandard 18’ (6m), #22 shielded twisted pair, 4-conn. Max. cable run at 24 Vdc = 1000’ (300m); at 12 Vdc = 500’
(150m). For other circumstances, contact the factory.
EnvironmentalSee meter mounted electronic specification for rating.
RegulatoryMark (applies to full power sensor only configuration and full power FT 430/440/450 mounted configurations)

Flow Range

Flow Range (GPM)
Nominal Pipe SizeMinimum FlowMaximum Flow

Additional Information

Quick Start Guide: Seametrics EX15x 25x QuickStart Guide

Datasheet: Seametrics EX100 200 Datasheet

Manual Instruction: Seametrics EX100 200 Instruction Manual

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