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EchoTouch™ Ultrasonic Level Transmitter
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LU20-5001
LU30-5003
LU30-5004
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The EchoTouch™ is an ultrasonic transmitter that provides non-contact level measurement. This transmitter is available in two models: two-wire (LU20) or three-wire (LU30). Both have an LED display (in inches or cm), easy calibration using simple push buttons, and are well-suited for challenging media, although the LU20 is instrinsically safe for especially difficult liquids.
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-Specifications-
| Range: |
(LU20) 6" to 18' (15 cm to 5.4m)
(LU30) 6" to 24.5' (15 cm to 7.4 m)
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LED Indication: |
(LU30) Relay status |
| Accuracy: |
±0.25% of span in air |
Process Temp: |
(LU20) F: -4° to 140°, C: -20° to 60°
(LU30) F: -20° to 140°, C: -4° to 60° |
| Resolution: |
0.125" (3 mm) |
Temp Comp: |
Automatic |
| Beam Width: |
8° conical |
Ambient Temp: |
F: -40° to 140°
C: -40° to 60° |
| Dead Band: |
6" (15 cm) |
Pressure: |
30 psi (2 bar) @ 25°C, derated @ 1.667 psi (.113 bar) per °C above 25°C |
| Display type: |
LCD, 4 digit |
Enclosure rating: |
NEMA 4X (IP65) |
| Disply units: |
Inch or cm |
Enclosure material: |
PP, UL94VO |
| Memory: |
Non-volitile |
Trans material: |
PVDF |
| Supply Voltage: |
(LU20) 12-32 VDC
(LU30) 14-36 VDC |
Cable jacket material: |
(LU30) Vinyl |
| Loop resistance: |
(LU20) 600 Ohms @ 24 VDC |
Cable type: |
(LU30) Pow./signal: 3-conductor, Relay: 3-conductor |
| Consumption: |
(LU30) 200 mA max |
Cable length: |
(LU30) 9" (22 cm) |
| Current Flow: |
(LU30) Source/sink |
Process mount: |
2" NPT (2" G) |
| Signal Output: |
4-20 mA, two-wire |
Mount gasket: |
Viton |
| Signal Invert: |
4-20 or 20-4 mA |
Conduit entrance: |
Single, 1/2" NPT |
| Calibration: |
Push button |
Classification: |
(LU20)Instrinsically safe
(LU30) General purpose |
| Contact Type: |
(LU30) (1) SPDT relay, latching |
Approvals: |
(LU20) Class I, Groups A, B, C, D; Class II, Groups E, F, G; Class III; T3C |
| Contact Rating: |
(LU30) 250 VAC @ 10A |
Parameters: |
(LU20) CSA: Vmax<32.0 V; Imax<130 mA; Ca=0µF; La=0µH |
| Contact Logic: |
(LU30) Single point: alarm,
Two point: latching |
Certificates: |
(LU20) CSA: LR 79326 |
| Fail-safety: |
Reverts to safe state during echo loss |
CE Compliance: |
(LU20) EN 61326 EMC
(LU30) EN 61326 EMC, EN 61010-1 safety |
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