FEATURES AND BENEFITS
• Microprocessor Based.
• Auto-Set -
Automatic calibration
• Calibrate
without completely emptying and filling vessel.
• Field
Selectable Control Mode Programs.
• Duplex Alarm
Relays.
• Digital
Display - Percent or engineering units.
• Field
Reversible Output.
• Uses Standard
Two-Wire Cable - Up 1 mile between probe system and the indicating
controller.
• NEMA-4, 4X, or
Explosion-Proof Enclosures.
•
Self-Diagnostic - Indicates out of calibration, sensor failure, etc.
• Calibration
Retained via Battery Back-Up on Loss of Power.
• Linearization
Optional for Level to Volume/Flow Conversion.
• UL/C-UL Listed
Transmitter
GENERAL DESCRIPTION
The Robertshaw Model 5000A Level-Lance is a
microprocessor based indicator/controller employing a pulse frequency
modulation (PFM) measuring system. Changing level conditions at the
sensing probe cause a change in the pulse frequency output of the
miniature transmitter that is normally mounted directly on the sensing
probe. This pulse frequency is detected by the remote mounted
indicator/controller and converted to a signal that is proportional to the
level being measured. This resultant level signal can be:
a. Displayed on the instrument door by means of 4 digit
LCD display reading in percent or engineering units field selectable.
b. Retransmitted via a 4-20 mADC output signal. This
optional signal is campatible with all common receivers used for
recording, indication, or control purposes.
c. Used to communicate with a larger computer via 20
mA loop. The Model 5000A continuously sends product
level information to the larger computer.
