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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 | |
| 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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