Manual Mode Zeroing - Teledyne 2010B Operating Instructions Manual

Thermal conductivity analyzer

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Thermal Conductivity Analyzer

The beginning zero level is shown in the upper left corner of the display. As

the zero reading settles, the screen displays and updates information on

in percent/second (unless the Slope starts within the acceptable zero range and

does not need to settle further). The system first does a course zero, shown in

the lower right corner of the screen as

zero, and displays

Then, and whenever Slope is less than 0.01 for at least 3 min, instead of

Slope you will see a countdown:

software steps in the zeroing process that the system must complete, AFTER

settling, before it can go back to Analyze . Software zero is indicated by

in the lower right corner.

The zeroing process will automatically conclude when the output is within

the acceptable range for a good zero. Then the analyzer automatically returns to

the Analyze mode.

Press Zero to enter the Zero function. The screen that appears allows you

to select between automatic or manual zero calibration. Use the

toggle between

blinking, on the display.

Press Enter to begin the zero calibration. After a few seconds the first of

three zeroing screens appears. The number in the upper left hand corner is the

first-stage zero offset. The microprocessor samples the output at a predeter-

mined rate.

The analyzer goes through C–Zero, F–Zero, and S–Zero. During C–Zero

and F–Zero, use the

possible to zero. Then, press Enter .

S–Zero starts. During S–Zero, the Microcontroller takes control as in Auto

Mode Zeroing, above. It calculates the differences between successive sam-

plings and displays the rate of change as

second (ppm/s).

, for 3 min.

4.4.1.2