Dwyer Series IEFS Insertion Electromagnetic Flow Sensor

Product Description

No Moving Parts, Hot-Tap Option, 3 to 48″ Field Adjustable Insertion

The Series IEFS Insertion Electromagnetic Flow Sensor comes in brass or stainless steel allowing it to handle a wide range of pressures and temperatures, as well as a variety of available saddle fittings, Series SDF, to fit pipe sizes 3 to 24″. The IEFS-1XX has an isolation valve which allows hot-tap installation. Additional options for this flow meter include adapter fittings and a reverse flow output. The Series IEFS is great for “dirty” water applications or any application where moving parts may be an issue.

PRINCIPLE OF OPERATION
The IEFS is a liquid flow meter that uses a magnetic field to measure flow. As conductive fluids flow through the magnetic field, a voltage is generated which is measured and translated into a pulse frequency output signal. This signal can then be used with the Series BAT to produce a 4 to 20 mA analog signal, or the Series RTI to display rate and total.

ACCESSORIES
• Series BAT, Blind Analog Transmitter, converts pulse output to 4 to 20 mA analog output. Unit is loop powered, fits on the enclosure of the meter, and is field spannable.
• Series RTI, Rate Total Indicator, converts pulse output to 4 to 20 mA analog output with local flow rate and totalization display. Unit is loop powered, can fit on the enclosure of the meter, and provides a high/low flow alarm.
• Series PWD, Pulse Divider, for use with pacing electronic metering pumps. Unit divides the input frequency to any number from 1 to 9999 with the use of rotary switches to suit a number of metering pump inputs.

Product Applications

• Conductive Liquids
• Municipal
• Industrial
• Irrigation

Models

Specifications

Service:

Compatible clean or dirty non-coating, conductive liquids.

Range:

0.28 to 20 ft/s (0.08 to 6.09 m/s).

Wetted Materials:

Body Shaft/Fitting: 316 SS or brass;
Electrodes: Hastelloy®;
Electrode Cap: PVDF;
Valve Assembly: (IEFS-1XX) Bronze (SS optional) with bronze ball valve;
O-ring: EPDM.

Accuracy:

±1% FS.

Temperature Limits:

Process: 32 to 200°F (0 to 93°C);
Ambient: 0 to 160°F (-17 to 72°C).

Process Connection:

IEFS-0XX: 1-1/2″ male NPT;
IEFS-1XX: 2″ male NPT.

Pressure Limit:

200 psi (13.8 bar).

Output:

Current sinking, square wave pulse, opto-isolated, 550 Hz @ 20 ft/s, 30
VDC @ 6 mA max.

Power Requirements:

12 to 25 VDC @ 250 mA; Low Power: 12 to 25 VDC @ 40
mA.

Electrical Connection:

Terminal block.

Conductivity:

≥ 20 microSiemens/cm.

Enclosure Material:

Housing: Die-cast powder-coated aluminum.

Enclosure Rating:

NEMA 4X (IP66).

Weight:

IEFS-0SX: 6 lb (2721 g);
IEFS-0LB: 12 lb (5443 g);
IEFS-1XX: 15 lb (6804 g).

Literature

Manuals

IOM

Catalog Pages

Series IEFS Catalog Page

Drawings

• Adobe Reader in format .PDF
• CAD Drawing in format .DWG

Model Chart