Instruction Manual
For LVU and LVRD Series
Ultrasonic and Radar Sensors
Inter-Connection Diagram
Top View of Sensor (Access Cover Removed)
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12– 30 VDC |
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DC Power Input | AC IN | L2/N | 7 | |
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Note - TB #7 is |
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Control Panel | ! | SHIELD | 3 | |
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Fastening Screw | RS232/485 A/TX | 2 | ||
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Terminal Block |
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Status LED |
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Calibration Pushbutton |
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NOTE — Use only 1/2” NPT Conduit
Typical Installation
1)DIRECT MOUNTING ULTRASONIC SENSOR
2)RADAR UNIT MUST BE INSTALLED INTO METAL FITTING WITH THE ANTENNA POINTING DOWNWARD.
FCC INFORMATION TO RADAR USERS
NOTE: This equipment has been tested and found to comply with the limits for a Class A digital device, pursuant to Part 15 of the FCC Rules. These limits are designed to provided reasonable protection against harmful interference when the equipment is operated in a commercial environment. This equipment generates, uses, and can radiate radio fre- quency energy and, if not installed and used in accordance with the instruction manual, may cause harmful interfer- ence to radio communications. Operation of this equipment in a residential area is likely to cause harmful interference in which case the user will be required to correct the inter- ference at his own expense.
authority to operate the equipment.
Wiring Information
- Ground shield at one end only. |
- All terminal block wiring must be rated for 250V. |
- Power input wiring must be protected by a 15A double |
pole circuit breaker . |
- Terminal is for use only with equipment which has no live |
parts which are accessible . |
- Terminal is for use with equipment which maintains basic |
insulation from hazardous voltage under normal and sin- |
gle fault conditions . |
- Connection used at the remote end of external circuit . |
Recommended Wiring |
| 12 | - 30 Vdc | |
˜ | 115 | / 230 Vac | |
60 | / 50 Hz | ||
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1/2” NPT Conduit Hole 1”, 1 1/2”, 2” , 3”NPT
Ultrasonic Sensor
Radar Rod Antenna
CALIBRATION PUSHBUTTON
/ Led Indicator For 4 - 20 mA 
(750 ohm Max.) output
OPTIONAL Programmable Calibration & Diagnostics, Data Logging, RS232 or RS485 Com. Temperature Compensation for the speed of sound .
For AC Sensor — |
Power |
| 3 | Wire unshielded 22 AWG , 300 V | ||
Current | Output | 1 Pair | shielded | 24 AWG , 300 V | |
Communication | 1 | Pair | shielded | 24 AWG , 300 V | |
For DC Sensor— |
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Power & | Current output 3 Wire shielded 24 AWG , 300 V | ||||
Calibration — 4 -20 or 20 - 4 mA Output
FULL — Calibrate 20 mA or 4mA (Set Near Target)
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| Process Temperature |
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| Radar ;190° F/90°C |
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| — 40° F/°C |
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| Ultrasonic ; |
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| Yellow |
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| 140° F/60 °C |
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EMPTY
4 or 20mA
Operation - An ultrasonic/electromagnetic pulse is transmitted from the sensor . The pulse travels to the surface being monitored and is re- flected off this surface back to the sensor . The time of flight is divided by 2 and converted to an output signal directly proportional to the material level .
1.Calibration mode LED color is Green.
(for Radar Low Dielectric Materials has to be off)
2.Push button and hold until LED turns Yellow (20 mA) or push button and hold until LED turns Red (4 mA)
3.Release button, observe LED flashes to acknowledge
the calibration.
EMPTY— Calibrate 4 mA or 20 mA (Set Far Target) 1. Calibration mode LED color is Green
(for Radar Low Dielectric Materials has to be off)
2. Push button and hold until LED turns Red (4 mA)
or push button and hold until LED turns Yellow (20 mA)
3. Release button, observe LED flashes to acknowledge the calibration.
For Radar to turn the Low Dielectric Materials operation mode ON and OFF (this mode is recommended for materials with dielectric constant lower than 4.)
1)To turn the Low Dielectric Materials ON. Push button and hold until LED goes OFF after the sequence of Yellow , Red and turns Off. The Low Dielectric Material operation is On when the LED’S Green light blinks constantly.
2)To turn the Low Dielectric Materials OFF. Push button and hold until LED goes OFF after the sequence of Yellow , Red and Turns OFF. The Low Dielectric Material operation is OFF when LED is continuously Green.