The EchoSwitch ultrasonic level switch features three relays, providing non-contact detection for up to 8m. Each relay can be configured on a single set point alarm, two latched set points for automatic fill or empty including lead-lag, or two independent set points for out-of-bounds alarms. In addition, relays 1 and 2 can be interlocked for a relay alternation or duplex operation.
The Echo Switch is most often selected for atmospheric day tank, pump lift station and waste sump applications (corrosive, waste, or slurry media). Its 7.6cm beam diameter is ideal for applications with restricted space and an amazing 5cm dead band optimizes filling capacity of small vessels.
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-Specifications-
| Range: |
LU75: 2" to 4' (5 cm to 1.2m)
LU72: 4" to 9.8' (10 cm to 3m)
LU71: 4" to 16.4' (10 cm to 5m)
LU73: 8" to 26.2' (20 cm to 8m) |
Contact logic: |
Single point: alarm
Two point: latching or out-of-bounds alarms |
| Relay interlock: |
Relays 1 & 2 only; alternation or duplexing |
| Repeatability: |
0.25" (6mm) |
Contact fail-safety: |
De-energizes during echo signal loss |
| Adjustability: |
Over entire range |
Process temp: |
F: -4° to 140°
C: -20° to 60° |
| Hysterysis: |
LU72/LU75: 0.5" (1.2 cm)
(single set point)
LU71/LU73: 1" (2.5 cm)
(single set point) |
Temperature comp: |
Automatic |
| Electronics temp: |
F: -40° to 160°
C: -40° to 71° |
| Beam width: |
LU72/LU75: 2" (5 cm) dia.
LU71/LU73: 3" (7.6 cm) dia. |
Pressure: |
30psi (2 bar) @ 25°C, derated
@
1.667psi (.113 bar) per °C above 25° C |
| Dead band: |
LU75: 2" (5 cm)
LU71/LU72: 4" (10 cm)
LU73: 8" (20 cm) |
Enclosure rating: |
NEMA 4X (IP65) |
| Enclosure vent: |
Watertight membrane |
| LED indication: |
Power, relay, and echo status |
Enclosure material: |
PC/ABS FR |
| Calibration: |
Target, push button |
Transducer material: |
PVDF Kynar |
| Memory: |
Non-volatile |
Process mount: |
LU72/LU75: 1" NPT (1" G)
LU71/LU73: 2" NPT (2" G) |
| Supply voltage: |
50_5: 95-250 VAC
58_5: 12-28 VDC |
Mount gasket: |
Viton |
| Consumption: |
50_5: 20 watts max.
58_5: 100 mA @ 24 VDC |
Conduit entrance: |
Dual, 1/2" NPT |
| Contact type: |
(3) SPDT relays |
Classification: |
General purpose |
| Contact rating: |
60 VA |
CE compliance: (pending) |
EN 61326 EMC
EN 61010 safety |
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