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Keyence FR-LEX20L

Long-range sensor main unit 2-wire explosion-proof model. FR-LEX20L. Series: Radar Level Sensor. Series code: FR series

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Description

Long-range sensor main unit 2-wire explosion-proof model. FR-LEX20L. Series: Radar Level Sensor. Series code: FR series

Specification

Model Name

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

Model Code

FR-LEX20L

Series Title

Radar Level Sensor

Series Code

FR series

Data Sheet URL

https://www.keyence.com/download/download/confirmation/?dlSeriesId=WS_157159&dlModelId=PM_28LEX2L&dlSiteId=1&dlLanguageId=en-US&dlLangType=en-US

CAD URL

https://www.keyence.com/products/process/level/fr/downloads/?mode=cd&modelId=PM_28LEX2L

Manuals URL

https://www.keyence.com/products/process/level/fr/downloads/?mode=ma&modelId=PM_28LEX2L

Model

FR-LEX20L

Type

2-wire explosion-proof model

Measuring range

Up to 15 m 49.2'*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

Material - 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, NBRCable glands: Nickel-plated brass, chloroprene

Connection diameter

G1-1/2 (40A)

Output - No. of control outputs

─

Output - Analog output

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

Network compatibility

HART

Analog output accuracy - Resolution

1 mm 0.04"*4

Analog output accuracy - Zero accuracy

±0.1 mA (zero point = 4 mA) *4

Analog output accuracy - 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 supply - Power consumption

752.5 mW or less (including analog 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)

Environmental resistance - Relative humidity

Up to 85% RH (no condensation)

Environmental resistance - Temperature of coupling used

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

Environmental resistance - Vibration resistance

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

Environmental resistance - 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

IECEx - 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

IECEx - 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

IECEx - 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

ATEX and UKEX - 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

ATEX and UKEX - 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

ATEX and UKEX - 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

Type Approval of Electrical Equipment for Use in Explosive Atmospheres - 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

Type Approval of Electrical Equipment for Use in Explosive Atmospheres - 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

Type Approval of Electrical Equipment for Use in Explosive Atmospheres - 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

NRTL/ACO - 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

NRTL/ACO - 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

NRTL/ACO - 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

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