Detector for a chromtograph
AssigneeSun Oil Company (Delaware)
InventorCharles F. Rhodes, Jr.
Life of this patent
Estimating the term…
Abstract
A detector having particular utility in a gas chromotograph uses a sensor to produce signals indicative of parameters of components of a gas. A signal whose level is related to a gas parameter is generated and sent to an amplifier. The output of the amplifier is stored and a signal related to the amplifier output signal is sent by means of a feedback loop to the input of the amplifier to compensate for losses in the amplification and storage processes.
Claims11
A gas chromotography circuit for detecting a parameter of a component of a gas, comprising:
- sensor means that produces signals indicative of parameters of the gas component;
- means connected to the sensor means for providing a signal whose level bears a relationship to the signals produced by the sensor means;
- means for amplifying the signal produced by the providing means;
- means for storing the amplified signal;
- and means for feeding back a portion of the stored signal into the amplifying means.
In a gas chromotograph:
- gas sensor means that produces a signal in response to the presence of the gas;
- means for amplifying the signal;
- capacitor storage means communicating with the amplifying means;
- and electronic switch means having its gate connected to the capacitor storage means and its output connected to the input of the amplifier means.
A chromotograph detector circuit, comprising:
- bridge sensor means;
- means connected to the sensor means for generating a signal indicative of a parameter detected by the sensor means;
- an amplifier connected to the signal generating means;
- a capacitor connected to the output of the amplifier;
- a transistor connected to the output of the amplifier and the capacitor;
- and feedback means connected between the transistor and the input of the amplifier.
In a gas chromotography which generates a signal that are indicative of parameters of components of a gas:
- an amplifier electrically communicating with the signals;
- a capacitor connected to the output of the amplifier;
- a transistor connected to the output of the amplifier and the capacitor;
- and a feedback loop connected between the transistor and the input of the amplifier.
Dependencies are inferred from the claim text.