Dwyer Instruments EFS2 Series Manual

SERIES EFS2
INSERTION ELECTROMAGNETIC FLOW SENSOR
No Moving Parts, Durable, Easy Installation & Maintenance, 1 to 12˝ Pipe (25 to 305 mm)
The SERIES EFS2 Insertion Electromagnetic Flow Transmitters is an economical,
fixed insertion flowmeter designed for use with the Series EFF fittings and tees to fit
in pipe sizes ranging from 1 to 12˝ (2.5 to 30.5 cm) pipes. This series provides a pulse
rate output of the flow.
FEATURES/BENEFITS
• Long life cycle and less frequent maintenance with no moving parts to wear or break
and electrodes that discourage fouling
• Unaffected by change in temperature, density, viscosity or concentration
• Pulse output for use with a variety of displays and controllers for remote reading
• Easy meter mount display and transmitter accessories for local indication and analog
4 to 20 mA output
APPLICATIONS
• Contaminated liquid flow monitoring
• Flow of conductive liquids
• Water & wastewater treatment
• Industrial systems
• Irrigation applications
• Telemetry applications
MODEL CHART
Example EFS2 -1P -RFO EFS2-1P-RFO
Series EFS2 Insertion electromagnetic flow sensor
Size/ 1P 1 to 3˝ pipe, PVC
Material 1B 1 to 3˝ pipe, brass
1S 1 to 3˝ pipe, 316 SS
2P 4 to 10˝ pipe, PVC
2B 4 to 10˝ pipe, brass
2S 4 to 10˝ pipe, 316 SS
3P 12˝ pipe, PVC
3B 12˝ pipe, brass
3S 12˝ pipe, 316 SS
Options BAT Blind analog transmitter
RFO Reverse flow output
IMM Immersible (urethane potted electrical connection)
FOR Fluoroelastomer O-ring
LOP Low power (12 to 25 VDC @ 40 mA) (max 250 mA)
Note: Need to purchase with Series EFF fitting for proper installation.
MODEL CHART
Stocked
Model Description
EFS2-1P Insertion electromagnetic flow sensor
EFS2-1B Insertion electromagnetic flow sensor
EFS2-1S Insertion electromagnetic flow sensor
EFS2-2B Insertion electromagnetic flow sensor
EFS2-3B Insertion electromagnetic flow sensor
Ø1-37/64
[40.13]
Pipe Size Material
1 to 3˝ PVC
1 to 3˝ Brass
1 to 3˝ SS
4 to 10˝ Brass
12˝ Brass
SENSOR BODY
[STAINLESS STEEL, BRASS OR PVC]
3-9/32
[83.45]
3/32˝ THICK
GASKET
O-RING
2-3/4
ELECTRODES
[69.90]
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: Sensor: 316 SS, brass or PVC; Electrodes: Hastelloy
Electrode Cap: PVDF; O-ring: EPDM (fluoroelastomer optional).
Accuracy: ±1% FS.
Temperature Limits: Process: Brass/SS: 32 to 200°F (0 to 93°C); PVC: 32 to
130°F (0 to 55°C); Ambient: 0 to 160°F (-17 to 72°C).
Pressure Limits: Brass/SS: 200 psi (13.8 bar); PVC: 150 psi (10 bar).
Process Connection: See page reference u below.
Output: Current sinking, square wave pulse, opto-isolated, 550 Hz @ 20 ft/s.
Power Requirements: 12 to 25 VDC @ 250 mA; (12 to 25 VDC @ 40 mA (max.
250 mA) - LOP option).
Electrical Connection: Terminal block.
Conductivity: 20 microSiemens/cm.
Enclosure Material: Housing: Die-cast powder-coated aluminum.
Enclosure Rating: NEMA 4X (IP66).
Weight: 3 lb (1361 g).
ACCESSORIES
Series Description
BATv 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.
RTI2w 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.
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. (See website)
USA: California Proposition 65
WARNING: Cancer and Reproductive Harm - www.P65Warnings.ca.gov
Hastelloy
DWYER INSTRUMENTS, INC. | www.dwyer-inst.com
4-15/16 [125.30]
4
[101.42]
, metal;
®
is a registered trademark of Hanes International
®
uProcess Connection: See page 318 (Series EFF)
vSee page 326 (Series BAT)
wSee page 326 (Series RTI)
317