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Keyence FR-LEX20
Long-range sensor main unit 2-wire explosion-proof model. FR-LEX20. Series: Radar Level Sensor. Series code: FR series
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Description
Long-range sensor main unit 2-wire explosion-proof model. FR-LEX20. Series: Radar Level Sensor. Series code: FR series
Specification
| Model Name | Long-range sensor main unit 2-wire explosion-proof model |
|---|---|
| Model Code | FR-LEX20 |
| Series Title | Radar Level Sensor |
| Series Code | FR series |
| Data Sheet URL | https://www.keyence.com/download/download/confirmation/?dlSeriesId=WS_157159&dlModelId=PM_28LEX20&dlSiteId=1&dlLanguageId=en-US&dlLangType=en-US |
| CAD URL | https://www.keyence.com/products/process/level/fr/downloads/?mode=cd&modelId=PM_28LEX20 |
| Manuals URL | https://www.keyence.com/products/process/level/fr/downloads/?mode=ma&modelId=PM_28LEX20 |
| 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 |
| 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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