Liquid level sensing apparatus for use in automatic chemical ana

Details Liquid level sensing apparatus for use in automatic chemical ana Liquid level sensing apparatus for use in automatic chemical ana

1988-08-09

1991-09-17

Wieder, Kenneth

Electricity: measuring and testing

Impedance, admittance or other quantities representative of...

Lumped type parameters

7386424, 340620, 422106, G01R 2726, G05D 900

Patent

active

050498266

ABSTRACT:
A liquid level sensing apparatus, including a bridge circuit sensitive to an element the impedance between a liquid sample and a pipette for providing a signal corresponding to the impedance, a phase detector for phase-detecting the output signal of the bridge circuit, a high-pass filter for differentiating the phase detection signal and a circuit for inhibiting the passage of a variation component of a signal from a band-pass filter and passing a liquid level signal component.

REFERENCES:
patent: 3315155 (1967-04-01), Colani
patent: 4212005 (1980-07-01), Hubert et al.
patent: 4585997 (1986-04-01), Lin
patent: 4818492 (1989-04-01), Shimizu
patent: 4855722 (1989-08-01), Mostyn et al.

Affiliated with

Also associated with

Rating

Liquid level sensing apparatus for use in automatic chemical ana does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Liquid level sensing apparatus for use in automatic chemical ana, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Liquid level sensing apparatus for use in automatic chemical ana will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1919372