NON-CONTACT ULTRASOUND
355
L
L
For Liquid Level,
Volume or Open
Channel Flow
Outstanding measurement performance and value
in a two-wire, integral transmitter featuring flexible
software and advanced signal processing.
Temperature Compensated Echo Rejection
The Model 355 has a patent-pending echo rejection technique that
constantly adjusts the rejected echo profile based on the current
sound propagation velocity. This technique keeps the transmitter track-
ing the actual liquid level as opposed to false targets even when tem-
perature changes alter the shape of the echo rejection profile.
L
Model 355 Transmitter Specifications
Power Supply
Power Consumption
Output Signal
Fault Detection
Damping
Ambient Temperature
Display
Keypad
Compensation
Accuracy
Repeatability
Resolution
Linearity
Response Time
Warm-up Time
Enclosure
Protection
16 to 36 VDC
Less than 1 Watt
4–20 mA with optional HART
®
Selectable from 3.6, 22 mA, or hold
Adjustable from 1–60
2-line
×
16-character LCD
-40° to +175° F (-40° to 80° C)
Dual Flow Totalizers
Two 7-digit flow totalizers are provided for
recording flow. One totalizer is resettable and
the other is non-resettable. Several multipliers
are selectable to allow for proper scaling.
Totalizer time is also recorded to show how
long each totalizer has been recording flow.
Stored Tank Shapes for Volume
Volume configuration with the 355 is as easy as selecting the tank
shape and inputting 1–3 dimensions. While a 20-point custom table is
also available, selecting the actual tank shape provides for a fast and
accurate configuration for a variety of common tank shapes.
Transducer Specifications
Frequency
Beam Angle
Max Range
Blocking Distance
Process Temp
Process Pressure
Material
Protection
Applications
60 kHz
Conical 10°
20 feet (6 meters)
10 inches (250 mm)
-40° to +175° F (-40° to +80° C)
0 to 43.5 psig (0 to 3 bar)
Kynar
®
Flex (PVDF) or polypropylene
NEMA 6P (IP 68)
4-push-button menu-driven
Auto temperature compensation
over transducer operating range
Greater of ±0.2% of range or
0.24 inch (6 mm)
±0.125 inch (3 mm)
0.1 inch (2.5 mm)
±0.4 inch (10 mm)
Less than 1 second (typical)
30 seconds
Cast aluminum or Lexan
®
NEMA 6 (IP 67)
• Sump, Well, Tank Level
• Highly Viscous Media
• Paint, Ink & Solvents
• Food & Beverage Vessels
• Batch & Day Tanks
7
MAGNETROL [ MAGNETROL INTERNATIONAL, INC. ]
