Panametrics DigitalFlow GC868, Руководство по обслуживанию, Страница: 16 / 64

Chapter 1. Calibration
1-7 DigitalFlow™ GC868 Service Manual (1 and 2-Channel)
1.5.2 Probe Option = [F1]
3. Press [F1] to select Input A, or [F2] to select Input B.
1.5.2.1 Set Point
Temperature
4. Press [F1] to enter the set point temperature (formerly known as the zero point).
This temperature should be at the low end of your expected operating range.
5. Enter the desired set point temperature, and press [ENT].
6. Press [F1] to STORE the entered temperature, or [F2] to ABORT the calibration. In
either case, the screen returns to the ANALOG INPUT prompt.
1.5.2.2 Slope Point
Temperature
7. Press [F2] to enter the slope point temperature. This temperature should be as
far from your set point as your temperature bath will allow, within the range -100°
to +350°C (-148° to +592°F).
8. Enter the desired slope point temperature, and press [ENT].
9. Press [F1] to STORE the entered temperature, or [F2] to ABORT the calibration. In
either case, the screen returns to the ANALOG INPUT prompt.
10. Proceed to Procedure Options on the next page.
1.5.3 Numer Option =
[F2]
The Numer option allows the user to calculate the temperature vs. resistance
information. To do this, the user must first collect data using the RTDs option in the
PRINT menu (discussed in Chapter 5 of the
Programming Manual
). The RTDs option
allows you to know what point value the GC868 is reading at a given temperature.
With this information, the Numer option enables you to enter the Set Temperature
and the slope of the RTD input in points/degree, allowing absolute control over RTD
calibration. Before attempting this step, follow the instructions in Chapter 5 of the
Programming Manual
(“The RTDs Submenu”) to obtain point values at your set point
and slope point.
1. Press [F1] to select Input A, or [F2] to select Input B.
1.5.3.1 Set Number 2. Press [F1] to enter the set number (formerly known as the zero point).
3. Enter the set point temperature, and press [ENT].
4. The program then asks for the set point number. Enter the points measured at
the set temperature, and press [ENT].
1.5.3.2 Slope Number 5. Press [F2] to enter the slope number. Calculate the slope number with the
formula:
6. Enter the RTD slope number and press [ENT].
1.5.3.3 Procedure Options You have completed calibration of the RTD input. Do one of the following:
• To calibrate another input, press [EXIT].
• To calibrate additional slots, press [EXIT] and then [F4] (EXIT) and proceed to
the appropriate section.
• To leave the Calibration Menu, press [F4] (EXIT) twice.
Slope
Slope point set point
–
slope temp set temp
–
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