Long-range sensor main unit 2-wire explosion-proof model FR-LEX20

FR-LEX20 - Long-range sensor main unit 2-wire explosion-proof model

*Please note that accessories depicted in the image are for illustrative purposes only and may not be included with the product.

Data Sheet (PDF)

Manuals

CAD Data

360°view (3D PDF)

Software

  • CE Marking
  • CSA

Specifications

Model

FR-LEX20

Type

2-wire explosion-proof model

Measuring range

Up to 20 m 65.6'*1

Display range

Up to 25 m 82.0'*1

Measurable dielectric constant of medium

2 or more *2

Resolution

1 mm 0.04"

Precision

Up to 0.1 m 0.3': ±10 mm 0.39";
0.1 to 10 m 0.3' to 32.8' : ±1 mm 0.04";
10 to 20 m 32.8' to 65.6': ±2 mm 0.08"
*3

Response time

1 s, 4 s (default value), 10 s, 25 s

Tank pressure

-0.1 to +1 MPa (-0.1 to +0.1 MPa below -20°C -4°F)

Material

Tank interior

Lens: PTFE;
Internal seal: FFKM;
Fastener: SUS304

Housing

PPS PC PA Internal potting agent: Epoxy resin
(when using an Isolated barrier) Barrier: PC
(when using a Zener barrier) Barrier: PC
(when using a Zener barrier with a flameproof enclosure) Explosion-proof enclosure: Aluminium die casting, NBR
Cable glands: Nickel-plated brass, chloroprene

Connection diameter

G1-1/2 (40A)

Output

No. of control outputs

Control output/auxiliary output

Analog output

4 to 20 mA (Response time: 3 s after internal value is confirmed [90% response])

Analog output accuracy

Resolution

1 mm 0.04"*4

Zero accuracy

±0.1 mA (zero point = 4 mA) *4

F.S. accuracy

±0.2 mA (full scale = 20 mA) *4

Power supply

Power voltage

18.3 to 35 VDC.
(when using an Isolated barrier) 24 VDC +25%/-10%
(when using a Zener barrier) 20.1 to 28 VDC
(when using a Zener barrier with a flameproof enclosure) 20.1 to 28 VDC

Power consumption

752.5 mW or less (including analogue output; excluding load current)
(when using an Isolated barrier) 3 W or less
(when using a Zener barrier) 602 mW or less
(when using a Zener barrier with a flameproof enclosure) 602 mW or less

Environmental resistance

Ambient temperature

-30 to +60°C -22 to 140°F (no freezing)
(when using an Isolated barrier) Barrier: -30 to +60°C -22 to 140°F (no freezing)
(when using a Zener barrier) Barrier: -30 to +60°C -22 to 140°F (no freezing)
(when using a Zener barrier with a flameproof enclosure) Barrier: -30 to +60°C -22 to 140°F(no freezing)

Relative humidity

Up to 85% RH (no condensation)

Temperature of coupling used

-30 to +85°C -22 to 185°F (no freezing)

Vibration resistance

10 to 500 Hz; Power spectral density: 0.816 G2 X, Y and Z directions

Shock resistance

100 m/s2 (10 G), 16 ms pulses, 1000 times each in X, Y and Z directions

IECEx

Explosion-proof performance

Ex ia IIC T4 Ga or Ex ia IIB T4 Ga Ex ia IIIC T135°C Da
(when using an Isolated barrier) [Ex ia Ga] IIC or [Ex ia Ga] IIB [Ex ia Da] IIIC
(when using a Zener barrier) [Ex ia Ga] IIB [Ex ia Da] IIIC
(when using a Zener barrier with a flameproof enclosure) Ex db [ia Ga] IIB T4 Gb Ex tb [ia Da] IIIC T135°C Db

Zone

Zone 0/20
(when using an Isolated barrier) Do not install in a hazardous location (associated apparatus*5)
(when using a Zener barrier) Do not install in a hazardous location (associated apparatus*5)
(when using a Zener barrier with a flameproof enclosure) Zone 1/21

Electrical ratings

Ui: 35 VDC / Ii: 142.4 mA / Pi: 1000 mW / Li: 26.2 nH / Ci: 79 nF
(when using an Isolated barrier) Um: 250 VRMS / Uo: 26.78 VDC / Io: 115.307 mA / Po: 772 mW / Lo (IIC): 0.2 mH / Co (IIC): 0.092 μF / Lo (IIB): 0.2 mH / Co (IIB): 0.72 μF
(when using a Zener barrier) Um: 250 VRMS / Uo: 34.33 VDC / Io: 112.007 mA / Po: 961.3 mW / Lo: 1.0 mH / Co: 0.37 μF
(when using a Zener barrier with a flameproof enclosure) Um: 250 VRMS / Uo: 34.33 VDC / Io: 112.007 mA / Po: 961.3 mW / Lo: 1.0 mH / Co: 0.37 μF

Temperature

-30°C -22°F ≤ Ta ≤ 60°C 140°F / -30°C -22°F ≤ Tp ≤ 85°C 185°F
(when using an Isolated barrier) ─
(when using a Zener barrier) ─
(when using a Zener barrier with a flameproof enclosure) Explosion-proof enclosure: -30°C -22°F ≤ Ta ≤ 60°C 140°F

ATEX and UKEX

Explosion-proof performance

II 1 G Ex ia IIC T4 Ga or II 1 G Ex ia IIB T4 Ga II 1 D Ex ia IIIC T135°C Da
(when using an Isolated barrier) II (1) G [Ex ia Ga] IIC or II (1) G [Ex ia Ga] IIB II (1) D [Ex ia Da] IIIC
(when using a Zener barrier) II (1) G [Ex ia Ga] IIB II (1) D [Ex ia Da] IIIC
(when using a Zener barrier with a flameproof enclosure) II 2 (1) G Ex db [ia Ga] IIB T4 Gb II 2 (1) D Ex tb [ia Da] IIIC T135°C Db

Zone

Zone 0/20
(when using an Isolated barrier) Do not install in a hazardous location (associated apparatus*5)
(when using a Zener barrier) Do not install in a hazardous location (associated apparatus*5)
(when using a Zener barrier with a flameproof enclosure) Zone 1/21

Electrical ratings

Ui: 35 VDC / Ii: 142.4 mA / Pi: 1000 mW / Li: 26.2 nH / Ci: 79 nF
(when using an Isolated barrier) Um: 250 VRMS / Uo: 26.78 VDC / Io: 115.307 mA / Po: 772 mW / Lo (IIC): 0.2 mH / Co (IIC): 0.092 μF / Lo (IIB): 0.2 mH / Co (IIB): 0.72 μF
(when using a Zener barrier) Um: 250 VRMS / Uo: 34.33 VDC / Io: 112.007 mA / Po: 961.3 mW / Lo: 1.0 mH / Co: 0.37 μF
(when using a Zener barrier with a flameproof enclosure) Um: 250 VRMS / Uo: 34.33 VDC / Io: 112.007 mA / Po: 961.3 mW / Lo: 1.0 mH / Co: 0.37 μF

Temperature

-30°C -22°F ≤ Ta ≤ 60°C 140°F / -30°C -22°F ≤ Tp ≤ 85°C 185°F
(when using an Isolated barrier) ─
(when using a Zener barrier) ─
(when using a Zener barrier with a flameproof enclosure) Explosion-proof enclosure: -30°C -22°F ≤ Ta ≤ 60°C 140°F

Type Approval of Electrical Equipment for Use in Explosive Atmospheres

Explosion-proof performance

Ex ia IIC T4 Ga or Ex ia IIB T4 Ga Ex ia IIIC T135°C Da
(when using an Isolated barrier) [Ex ia Ga] IIC or [Ex ia Ga] IIB [Ex ia Da] IIIC
(when using a Zener barrier) [Ex ia Ga] IIB [Ex ia Da] IIIC
(when using a Zener barrier with a flameproof enclosure) Ex db [ia Ga] IIB T4 Gb Ex tb [ia Da] IIIC T135°C Db

Zone

Zone 0/20
(when using an Isolated barrier) Do not install in a hazardous location (associated apparatus*5)
(when using a Zener barrier) Do not install in a hazardous location (associated apparatus*5)
(when using a Zener barrier with a flameproof enclosure) Zone 1/21

Electrical ratings

Ui: 35 VDC / Ii: 142.4 mA / Pi: 1000 mW / Li: 26.2 nH / Ci: 79 nF
(when using an Isolated barrier) Um: 250 VRMS / Uo: 26.78 VDC / Io: 115.307 mA / Po: 772 mW / Lo (IIC): 0.2 mH / Co (IIC): 0.092 μF / Lo (IIB): 0.2 mH / Co (IIB): 0.72 μF
(when using a Zener barrier) Um: 250 VRMS / Uo: 34.33 VDC / Io: 112.007 mA / Po: 961.3 mW / Lo: 1.0 mH / Co: 0.37 μF
(when using a Zener barrier with a flameproof enclosure) Um: 250 VRMS / Uo: 34.33 VDC / Io: 112.007 mA / Po: 961.3 mW / Lo: 1.0 mH / Co: 0.37 μF

Temperature

-30°C -22°F ≤ Ta ≤ 60°C 140°F / -30°C -22°F ≤ Tp ≤ 85°C 185°F
(when using an Isolated barrier) ─
(when using a Zener barrier) ─
(when using a Zener barrier with a flameproof enclosure) Explosion-proof enclosure: -30°C -22°F ≤ Ta ≤ 60°C 140°F

NRTL/ACO

Explosion-proof performance

Class I, Zone 0, AEx ia IIC T4 Ga/Zone 20, AEx ia IIIC T135°C Da/Class I, Division 1, Groups A, B, C, D, T4/Class II, Division 1, Groups E, F, G, T135°C/Class III, Division 1 or Class I, Zone 0, AEx ia IIB T4 Ga/Zone 20, AEx ia IIIC T135°C Da/Class I, Division 1, Groups C, D, T4/Class II, Division 1, Groups E, F, G, T135°C /Class III, Division 1
(when using an Isolated barrier) [AEx ia Ga] IIC or [AEx ia Ga] IIB/[AEx ia Da] IIIC Intrinsically safe circuit for Class I, Division 1, Groups A, B, C, D or Class I, Division 1, Groups C, D/Class II, Division 1, Groups E, F, G/Class III, Division 1
(when using a Zener barrier) [AEx ia Ga] IIB/[AEx ia Da] IIIC Intrinsically safe circuit for Class I, Division 1, Groups C, D/Class II, Division 1, Groups E, F, G/Class III, Division 1
(when using a Zener barrier with a flameproof enclosure) Class I, Zone 1, AEx db [ia Ga] IIB T4 Gb/Zone 21, AEx tb [ia Da] IIIC T135°C Db/Class I, Division 1, Groups C, D, T4/Class II, Division 1, Groups E, F, G, T135°C /Class III, Division 1

Zone/Division

Zone 0/20 Division 1
(when using an Isolated barrier) Do not install in a hazardous location (associated apparatus*5)
(when using a Zener barrier) Do not install in a hazardous location (associated apparatus*5)
(when using a Zener barrier with a flameproof enclosure) Zone 1/21 Division 1

Electrical ratings

Ui: 35 VDC / Ii: 142.4 mA / Pi: 1000 mW / Li: 26.2 nH / Ci: 79 nF
(when using an Isolated barrier) Um: 250 VRMS / Uo: 26.78 VDC / Io: 115.307 mA / Po: 772 mW / Lo (IIC): 0.2 mH / Co (IIC): 0.092 μF / Lo (IIB): 0.2 mH / Co (IIB): 0.72 μF
(when using a Zener barrier) Um: 250 VRMS / Uo: 34.33 VDC / Io: 112.007 mA / Po: 961.3 mW / Lo: 1.0 mH / Co: 0.37 μF
(when using a Zener barrier with a flameproof enclosure) Um: 250 VRMS / Uo: 34.33 VDC / Io: 112.007 mA / Po: 961.3 mW / Lo: 1.0 mH / Co: 0.37 μF

Temperature

-30°C -22°F ≤ Ta ≤ 60°C 140°F / -30°C -22°F ≤ Tp ≤ 85°C 185°F
(when using an Isolated barrier) ─
(when using a Zener barrier) ─
(when using a Zener barrier with a flameproof enclosure) Explosion-proof enclosure: -30°C -22°F ≤ Ta ≤ 60°C 140°F

Enclosure rating

IP67 (IEC60529), Enclosure Type 4X (NEMA250)
(when using an Isolated barrier) Barrier: Not specified
(when using a Zener barrier) Barrier: Not specified
(when using a Zener barrier with a flameproof enclosure) Explosion-proof enclosure : IP67 (IEC60529) Enclosure Type 4X (NEMA250)

Protection circuit

Reverse power connection protection, power supply surge protection

Weight

Approx. 920 g 32.45 oz
(when using an Isolated barrier) Barrier: Approx. 320 g 11.28 oz
(when using a Zener barrier) Barrier: Approx. 100 g 3.52 oz
(when using a Zener barrier with a flameproof enclosure) Flameproof enclosure + barrier (without cable glands): Approx. 1300 g 45.85 oz

*1 Guaranteed value in water with the recommended installation. In still water, measurement is possible with water up to the edge of the lens. An undetectable area is present at short range due to the environment and measurement medium. The maximum measuring range is also reduced.
*2 Measurement may not be possible depending on the environment and shape of the target.
*3 Guaranteed value from verification performed at KEYENCE inspection facilities. Measurement errors may occur depending on the customer’s environment.
*4 Guaranteed value from verification performed at KEYENCE inspection facilities with a load resistance of 250 Ω. Measurement errors may occur depending on the customer’s environment.
*5 Associated apparatus are devices that comprise both intrinsically safe and non-intrinsically safe circuits. The FR-LEX20 meets the requirements for intrinsically safe construction when used in conjunction with associated apparatus.

Data Sheet (PDF) Other Models