51-616 Echotel Model 350/351 Ultrasonic Non-Contact Level Transmitter
16
3.5
Specifications
3.5.1 Electronic
3.5.2 Transducer
3.5.3 Performance
Supply voltage
120 VAC or 240 VAC, 50–60 Hz
Power consumption
5 watts maximum
Output (Controller)
Two (2) SPDT 120/240 VAC relays, adjustable differential, 10 A resistive
Output (Transmitter)
4–20 mA isolated, maximum 1000 ohm loop resistance
Fail-safe (Controller)
User selectable; on (energized) or off (de-energized)
Fail-safe (Transmitter)
User selectable; 4 mA, 20 mA, or hold last value
Time delay (Controller)
1–120 seconds adjustable for each relay set point
Electronics
-40° to +160° F (-40° to +71° C)
Humidity
95% Non-condensing (electronics)
Maximum range
25 feet (7.6 meters) from transducer face
Span
2 inches (51 millimeters) minimum
24 feet (7.3 meters) maximum
Frequency
50 kHz
Minimum dead zone
12 inches from -20° to 140° F (305 millimeters from -30° to +60° C)
18 inches from +140° to +160° F (457 millimeters from +60° to +71° C)
Ambient temperature
➀
-20° to +160° F (-30° to +71° C)
Temperature compensation
Automatic over range of transducer operating temperature
Operating pressure
-10 to +50 psig (0.689 to +3.45 bar)
Beam angle
12° Conical
Cable length
100 feet (30 meters) maximum between transducer and electronics
➀
Kynar and 316SS transducers temperature rating -20° F to
+200° F (non-operational to +250° F).
Response time
1 second minimum
Repeatability
±0.125" (±3 mm)
Accuracy
±0.25% of full scale
