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Babbitt Radar Level Transmitters
Babbitt International

ABM Series Radar Level Transmitters

Babbitt Radar Level Transmitter

Babbitt RADAR level transmitters allow simple and reliable non-contact level measurement of fluids in a metal tank. The microprocessor-controlled electronics transmit a 6.3 GHz electromagnetic pulse at the fluid's surface, which is then reflected back to the antenna.

The "round trip" time of flight is then calculated to determine the fluid level in the container. Pulsed RADAR can "see through" environments that would normally interfere with an ultrasonic type sensor, thus fuming and foams can be ignored in the field.

Our proprietary software senses and analyzes the amplitude and shape of the received echos. This enables the units automatic gain control to track the process level and also elimnate false echoes from unwanted obstructors such as standpipes or tank walls. The dielectric constant of a material is important to the proper operation of RADAR units. Each unit has the ability to work with materials that have a dielectric constant greater then 2.

Operation and Maintenance Manual

A single push-button is used to set the zero and span. Callibration can be done in the vessel by varying the fluid level, or the unit can be calibrated on the bench by aiming the unit at a suitable target. Factory pre-calibrated units are available.

With the optional communication software, the unit can be programmed with any personal computer. This software also enables diagnostics, data logging and special calibration, such as configuring the unit to work in a narrow pipe.

The zero and span points are independent of each other and fully adjustable over the units range.

Babbitt Radar Level Transmitter Calibration
SPECIFICATIONS:  
Electrical:  
Power (+/- 20%): 115VAC/60Hz; 230VAC/50Hz; 12 to 30 VDC
Output: 4-20mA or 20-4mA, 6.1uA resolution, 750 ohms (Isolated on AC units)
Fuse: 0.125A/250V type 2AG
Mechanical:  
Process Entry: 2" NPT Standard
Conduit Entry: 1/2" NPT
Antenna: Polypropylene (Standard) Teflon (Optional)
Enclosure: Aluminum (Standard), Stainless Steel, NEMA 4 (IP65)
Environmental:  
Temperature Electronics: -40F to 140F; PP Antenna: -40F to 190F; Teflon Ant: -40F to 250F
Pressure 150 PSIG Max.
Approvals FCC Part 15 - Low Power Communication Device
Operational:  
Range: 50 or 100 feet - mode dependent
Accuracy: +/- 0.25% of maximum target range in air
Frequency: 6.3 GHz
Transmitter Power: 50uW average
Loss Echo: 30 sec. hold time, then 22mA output

Radal Level Transmitters



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