Temperature averaging data logger

• US 5,249,863 A
• Filed: 12/21/1992
• Issued: 10/05/1993
• Est. Priority Date: 02/14/1992
• Status: Expired due to Fees

• Current Assignee: Texaco Incorporated (Chevron Corp.)
• Original Assignee: Texaco Incorporated (Chevron Corp.)
• Inventors: Brown, Winthrop K.
• Primary Examiner(s): Cuchlinski, Jr., William A.
• Assistant Examiner(s): GUTIERREZ, DIEGO F
• Application Number:
  US07/994,236
• Time in Patent Office: 288 Days
• Field of Search: 374/102, 374/170
• US Class Current: 374/102
• CPC Class Codes: G01K 3/04 in respect of time

Abstract

A temperature averaging data logger measures temperature at regular intervals and continually displays the average of the measured temperatures. Upon being reset, the data logger displays the number of days since the last reset, the instant temperature, and then commences its temperature averaging mode.

Claims

1. A data logger comprising:

temperature sensing means for sensing a temperature;

amplifier means responsive to said temperature sensing means for generating an output proportional to the sensed temperature;

timer means for periodically activating the temperature sensing means;

means for averaging the output from said amplifier means;

means for resetting said averaging means in response to said timer means;

means for manually resetting said averaging means;

display means responsive to said averaging means for displaying the averaged output representing average sensed temperature;

means for displaying on said display means the time period between each resetting of said averaging means;

battery power supply means; and

means in said power supply means for monitoring battery condition and for causing said condition to be displayed on said display means.