IoT Flow Sensors

E8FC

Detect signs of abnormalities in cooling water, water-soluble coolant, and water-insoluble oil by simultaneous measurement of “flow rate + temperature”

Note. For information on the following models, refer to the E8FC-25D/25T/25 series data sheet (Catalog No.E608) listed in the Catalog column.
 E8FC-25D/E8FC-25T/E8FC-25 

Sensors

Model

NPN/PNP selectable (COM2)

E8FC-25SD

NPN/PNP selectable (COM3)

E8FC-25ST

Applicable
 diameter

Nominal diameter B

3/8"

1/2"

3/4"

1"

Nominal diameter A

10 A

15 A

20 A

25 A

Applicable fluid

The fluid must not corrode the material of the wetted part (e.g. water,
 water-soluble coolants, insoluble oils)

Permissible pressure *1

10 MPa

Flow rate
 monitoring
 *2

Rated flow rate range

0.6 to 14 l/min

1 to 30 l/min

1.5 to 60 l/min

2 to 100 l/min

Inner diameter setting (10 A, 15 A, 20 A, 25 A)

Display range

0 to 16 l/min

0 to 33 l/min

0 to 66 l/min

0 to 110 l/min

Zero cutting flow rate *3

0.6 l/min

1 l/min

1.5 l/min

2 l/min

Display resolution

0.1, 0.5, 1 l/min (Selectable)

Flow rate monitoring
 response time

Control output: 1, 2.5, 5, 10, 30, 60 s

Flow rate monitoring
 precision *4

± (7.0% of measured value + 2.0% F.S.) or less

Flow rate repeatability
 (prescribed for each
 response time)

1 s: ±3.5% F.S., 2.5 s: ±2.5%F.S., 5 s: ±1.6% F.S., 10 s: ±1% F.S.,
 30 s: ±0.8% F.S., 60 s: ±0.6%F.S.

Ambient temperature
 characteristics *5

±1.0% F.S./10°C

Hysteresis

Variable

Temperature
 monitoring
 *6

Temperature monitoring
 rated range *7

0 to 85°C

Temperature monitoring
 precision

±2.5°C

Temperature repeatability

±0.5°C

Control
 output
 judgment
 (selectable)

Standard mode

It is judged if the measured value is the threshold value or more (or
 less).

Window mode

It is judged if the measured value is within the upper and lower limits.

Display method

Numerical value indication: 4-digit 7-segment white LED with inverting
 function
 Status indicators: The content of indication is selectable from green,
 orange, red, and OFF.
 Output indicator: OUT1 operation (orange), OUT2 operation (orange)
 Unit indicator: l/min (White), % (White), °C (White), ST (White)
 Communication indicator: IO-Link mark (green)

Delay setting

1 to 9999 ms (Select a function from invalid, ON delay, OFF delay, and
 one-shot.)

Connection method

M12, 4-pole connector type

Output ch1

Control output

Flow rate control output (N.O./N.C.) /temperature control output (N.O./
 N.C.)
 NPN/PNP selectable
 30 VDC or less, max. 100 mA/ch, residual voltage 1 V or less

Analog current output *8

Flow rate analog output /temperature analog output
 Current output 4 to 20 mA (maximum load resistance 350Ω or less)
 (Display value ± 2% of FS)

Pulse output

1, 10, 100, 1000 l

Output ch2

Control output

Flow rate control output (N.O./N.C.) /temperature control output (N.O./
 N.C.)
 NPN/PNP selectable
 30 VDC or less, max. 100 mA/ch, residual voltage 1 V or less

Analog current output *8

Flow rate analog output /temperature analog output
 Current output 4 to 20 mA (maximum load resistance 350Ω or less)
 (Display value ± 2% of F.S.)

Pulse output

1, 10, 100, 1000 l

External input

Smart tuning/One-point tuning (selectable, initial status: invalid),
 short-circuit current 1.5 mA or less, input time 20 ms or more

IO-Link

IO-Link specification

Ver 1.1

Baud rate

E8FC-25SD: COM2 (38.4kbps)
 E8FC-25ST: COM3 (230.4Kbps)

Data length

PD Size: 6 byte
 OD Size: 1 byte (M-sequence type: TYPE_2_V)

Minimum cycle time

E8FC-25SD (COM2): 3.2 ms
 E8FC-25ST (COM3): 2.0 ms

Power
 supply

Power supply voltage

15 to 30 VDC (including 10% ripple (p-p)), Class 2

Power consumption

2,880 mW or less
 (When power supply voltage is 30 V, current consumption must be 96
 mA or less.
 When power supply voltage is 15 V, current consumption must be 192
 mA or less.)

Protection circuit

Power supply reverse connection protection, output short-circuit
 protection, and output reverse connection protection

Environment
 resistance

Ambient temperature range

-20 to 70°C in operation and storage, respectively (no condensation)

Applicable fluid temperature

0 to 85°C (no icing on the pipe surface)

Ambient humidity range

35 to 85%RH in operation and storage, respectively (no condensation)

Withstand voltage

500 VAC 50/60 Hz 1 min between charge unit package and case

Vibration resistance
 (destruction)

10 to 2000 Hz, double amplitude 1.5 mm, 2 hours in X/Y/Z direction
 each

Shock resistance
 (destruction)

500 m/s2, three times in X/Y/Z direction each

Protective structure

IP67

Materials

Wetted part

Detecting unit: SUS304, O-ring: FKM

Other than wetted part

Head: PPSU, display unit: PES, button: PBT, chassis: SUS304L, nut:
 SUS304

Weight

Approx. 190 g

Accessories

• User's manual (Japanese, English, and Chinese), one each
 • Compliance sheet
 • Index list

1. Even instantaneous pressure fluctuation such as water hammer must be within the permissible pressure.
 2. Flow monitoring performance is defined by the values measured under the following conditions using OMRON's factory adjustment equipment.
      • OMRON's factory adjustment equipment: Pipe diameter 20A, straight pipe length 900 mm or more, recommended pipe joint (KITZ's PTZ-20A), dedicated adapter (E8FC-YA-R20A)
      • The long side of the chassis holding unit is installed toward the upstream side of the piping. Refer to Piping method on Catalog.
      • Measured normal temperature water (approx. 23°C) under normal temperature environment (approx. 23°C) Since each performance depends on the water level of the piping, there is a possibility that the measured value may deviate depending on the condition that the inside of the piping including the pipe joint is not filled with water, fluid pulsation, and clogging of the piping.
 3. Cutting to zero is the function outputting the flow rate less than the minimum rated flow rate as zero.
 4. The accuracy of flow rate monitoring when the pipe diameter is 20A. For piping sizes 10A, 15A and 25A, refer to Characteristic Data on Catalog in the catalog before use.
 5. The ambient temperature characteristics are defined by the values measured under the following conditions.
      • Pipe diameter 20A, Straight pipe length: 900 mm or more, recommended pipe joint (KITZ's PTZ-20A), dedicated adapter (E8FC-YA-R20A)
      • The long side of the chassis holding unit is installed toward the upstream side of the piping. Refer to Piping method on Catalog.
      • Water at room temperature (approx. 23°C) was measured at a flow rate of 30 l/min.
 6. The performance of temperature monitoring is specified by the values measured under the following conditions.
      • Pipe diameter 20 A, recommended pipe joint (KITZ's PTZ-20A), dedicated adapter (E8FC-YA-R20A)
      • The long side of the chassis holding unit is installed toward the upstream side of the piping. Refer to Piping method on Catalog.
      • In a normal temperature environment (approx. 23°C)
 7. If the pipe temperature exceeds 70°C, do not contact any cables with the pipe.
 8. Do not connect outputs CH1 (pin 4) or/and CH2 (pin 2) with the IO-Link master unit in analog current output mode. Otherwise the IO-Link master might fail.