Gems Sensors UCL-210 Instruction Bulletin

Principle of Operation Principle of Operation Principle of Operation
Principle of Operation Principle of Operation
An ultrasonic sound wave is transmitted from the base of the transducer. This
sound wave is reflected off the process medium and returned to the trans-
ducer. The sensor's electronics calculate the travel time the sound wave
requires and determines the distance between the transducer and the medium.
Specifications Specifications Specifications Specifications Specifications
Operating Temperature
Operating Pressure
Input Voltage
Output
Range
Accuracy
Resolution
Beam Width
Max Loop Resistance
Enclosure Rating
Enclosure Material
Transducer Material
Conduit connection
Mounting
4 or 20 mA 4 or 20 mA 4 or 20 mA 4 or 20 mA 4 or 20 mA
Sensor Electrical Loading Limits Sensor Electrical Loading Limits Sensor Electrical Loading Limits Sensor Electrical Loading Limits Sensor Electrical Loading Limits
2,000
Unacceptable
1,500
Range
1,000
Acceptable
500
0
12 18 24
Supply Voltage (VDC) Supply Voltage (VDC) Supply Voltage (VDC) Supply Voltage (VDC) Supply Voltage (VDC)
Mounting Mounting Mounting Mounting Mounting
The unit must be mounted vertically above the process medium (liquid) to be
measured.
1. The maximum measurable distance is 72" or 144"
2. There is a "dead zone" less than 6" or 3.6" from the end of the transducer.
The transducer cannot meaure less than 6" or 3.6" from its tip.
3. The transducer's ultrasonic signal is cone-shaped with an 8° beam
angle. Care must be taken to ensure that there are no obstructions
to the beam (wall of tank, ladder, etc.). See diagrams.
1. Avoid interference with the beam from the side of the tank and obstructions 1. Avoid interference with the beam from the side of the tank and obstructions
1. Avoid interference with the beam from the side of the tank and obstructions 1. Avoid interference with the beam from the side of the tank and obstructions 1. Avoid interference with the beam from the side of the tank and obstructions
in the tank. in the tank. in the tank.
in the tank. in the tank.
2. Do not install the transducer at an angle. 2. Do not install the transducer at an angle. 2. Do not install the transducer at an angle.
2. Do not install the transducer at an angle. 2. Do not install the transducer at an angle.
3. The transducer will not operate in a vacuum. 3. The transducer will not operate in a vacuum. 3. The transducer will not operate in a vacuum. 3. The transducer will not operate in a vacuum. 3. The transducer will not operate in a vacuum.
4. The transducer will not operate properly with the presence of vapors or foam. 4. The transducer will not operate properly with the presence of vapors or foam. 4. The transducer will not operate properly with the presence of vapors or foam. 4. The transducer will not operate properly with the presence of vapors or foam. 4. The transducer will not operate properly with the presence of vapors or foam.
5. Use proper sealant on threads. 5. Use proper sealant on threads. 5. Use proper sealant on threads. 5. Use proper sealant on threads. 5. Use proper sealant on threads.
6. Do not thread more than 1-2 turns past hand-tight. 6. Do not thread more than 1-2 turns past hand-tight. 6. Do not thread more than 1-2 turns past hand-tight. 6. Do not thread more than 1-2 turns past hand-tight. 6. Do not thread more than 1-2 turns past hand-tight.
Ultrasonic Continuous Level T Ultrasonic Continuous Level T Ultrasonic Continuous Level Transmitter
Ultrasonic Continuous Level T Ultrasonic Continuous Level T
-40°F to 140°F
30 psi @ 25°C (See chart below)
12 to 36 VDC
4-20 mA (2-Wire)
3.6" to 72" (6') - 6" to 144" (12')
± 0.25% of span in air
0.125" (3 mm)
8° Conical
600 Ohms @ 36 VDC
NEMA 4X (IP65)
Polypropylene
PVDF
1/2" NPT
3/4" NPT (6') - 2" NPT (12')
100
80
60
40
Range
20
30 36
See diagrams. See diagrams. See diagrams. See diagrams.
Important Notes Important Notes Important Notes Important Notes Important Notes
(6' and 12' Fixed Ranges) (6' and 12' Fixed Ranges) (6' and 12' Fixed Ranges) (6' and 12' Fixed Ranges) (6' and 12' Fixed Ranges)
(See chart below) (See chart below) (See chart below) (See chart below)
Maximum Temperature/Voltage Derating Maximum Temperature/Voltage Derating
Maximum Temperature/Voltage Derating Maximum Temperature/Voltage Derating Maximum Temperature/Voltage Derating
Continuous 20 mA Curve Continuous 20 mA Curve Continuous 20 mA Curve
Continuous 20 mA Curve Continuous 20 mA Curve
Unacceptable
Range
Acceptable
Range
0
12 16 20 24 28
Operating Voltage (VDC) Operating Voltage (VDC) Operating Voltage (VDC) Operating Voltage (VDC) Operating Voltage (VDC)
Instruction Bulletin No. 196822 Instruction Bulletin No. 196822 Instruction Bulletin No. 196822
Instruction Bulletin No. 196822 Instruction Bulletin No. 196822
UCL-210 UCL-210
UCL-210 UCL-210 UCL-210
Dimensions Dimensions Dimensions
Dimensions Dimensions
12'
Sensor
6'
Sensor
Temperature/Pressure Derating Temperature/Pressure Derating Temperature/Pressure Derating Temperature/Pressure Derating Temperature/Pressure Derating
35
30
25
20
Acceptable
15
10
05
00
32 36 -40 -20
Depth Range Depth Range Depth Range Depth Range Depth Range Beam Radius Beam Radius Beam Radius Beam Radius Beam Radius
(In Feet) (In Feet) (In Feet) (In Feet) (In Feet) (In Inches) (In Inches) (In Inches) (In Inches) (In Inches)
1
1.2
2 2.1
4 3.7
6
5.4
8
7.1
10
8.8
12 10.4
ransmitter ransmitter ransmitter
ransmitter
3.6"
(91 mm)
4.9"
(124 mm)
6.3"
(163 mm)
2"
NPT
↑
1.125
28.6
↓
0.7
3/4"
17.8
NPT
↑
Unacceptable
Range
Range
00 20 40 60 80
Temperature (°C) Temperature (°C) Temperature (°C) Temperature (°C) Temperature (°C)
D D D D D
R R R R R