Two-wire RADAR sensor with intermittently operating circuitry co

Details Two-wire RADAR sensor with intermittently operating circuitry co Two-wire RADAR sensor with intermittently operating circuitry co

1998-02-27

2000-01-11

Sotomayor, John B.

Communications: directive radio wave systems and devices (e.g.,

Determining distance

Material level within container

G01S 1332

Patent

active

06014100&

ABSTRACT:
An improved RADAR sensor for measuring the level of material utilizes conventional medium- or high-power microwave transmitter and microwave receiver devices, while utilizing only the relatively small amount of current supplied by a conventional low current two-wire process control loop. A transmit/receive unit and a control unit are operated intermittently to generate readings, and are set to a current-saving or even currentless standby mode between these periods of active measurement. During the inactive standby period, circuit components such as capacitors collect and store power to be used for the comparably high-power requirement during the active measurement cycles. The inactive standby periods are preferably long compared to the duration of the measurement periods. This permits operation with power entirely supplied from a common two-wire 4-20 mA process control loop.

REFERENCES:
patent: 4146834 (1979-03-01), Maltby et al.
patent: 4656353 (1987-04-01), Thompson
patent: 4661817 (1987-04-01), Bekkadal et al.
patent: 4742574 (1988-05-01), Smith et al.
patent: 5621177 (1997-04-01), Torimaru
patent: 5672975 (1997-09-01), Kielb et al.

Affiliated with

Also associated with

Rating

Two-wire RADAR sensor with intermittently operating circuitry co does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Two-wire RADAR sensor with intermittently operating circuitry co, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Two-wire RADAR sensor with intermittently operating circuitry co will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1465479