9130 User Calibration

NOTE: This section details how to calibrate the 9130 inputs.  For instructions on calibrating an SSi analog input board, see the SSi Configuration and Calibration section.

 

Click on the “click” value next to the “9130 User Calibration” field to start the user calibration.  The Calibration screen will be displayed. For complete calibration of Analog Inputs start with step #2 Zero and Span Calibration.  The Cold Junction should be performed AFTER the user has calibrated all of the inputs and outputs.

 

Step 1. Zero then Span Calibration.

The second screen (zero/span calibration), and all of the subsequent screens, will allow the user to zero and span the inputs and outputs for the 9130 vacuum controller (cold junction will be completed as a final step).

For a zero calibration, a value of 0 mV will need to be sourced to the input or inputs.

In the “Zero Input X/Range Y” section, enter the zero voltage and click on the Calibrate button.  This will calibrate the zero range.  The progress of the calibration will be shown in the progress bar at the bottom of the screen.

For a span calibration, a value of 90 % of the full range (or the adjusted value) will need to be sourced to the input or inputs.

In the “Span Input X/Range Y” section, enter the span voltage that you are sourcing in and click on the Calibrate button.  A suggested value will be supplied.  This will calibrate the span range.  The progress of the calibration will be shown in the progress bar at the bottom of the screen.  Repeat these steps for all of the inputs.

Clicking on the Next -> button will display the next screen(s) for the user calibration.  Clicking on the <- Back button will display the previous screen(s).

 

To calibrate the zero range for the outputs, you must first attach your measuring device.

In the “Zero Output X” section, click on the Prep for Zero button.  Let the unit output what it has set for the zero measurement, then enter what you are measuring coming out of the terminals. Once entered, click on the Calibrate button and let the procedure finish. The progress of the calibration will be shown in the progress bar at the bottom of the screen. 

 

 

 

In the “Span Output X” section, click on the Prep for Span button.  Let the unit output what it has set for the span measurement, then enter what you are measuring coming out of the terminals. Once entered, click on the Calibrate button and let the procedure finish. The progress of the calibration will be shown in the progress bar at the bottom of the screen.  Repeat these steps for all of the outputs.

 

Once all of the inputs and outputs have been calibrated, return to the first screen (Step 2) for cold junction calibration, if necessary.

 

Step 2. Cold Junction Calibration.

NOTE: Perform zero and span calibrations (see previous section) before following this procedure.

 

The “Cold Junction” option will allow the user to perform a cold junction trim on the 9130 analog input board.

 

To determine if a cold junction adjustment is needed, hook up the calibrator with the appropriate T/C wire attached (reference the specific input under the “Analog Input Setup” menu), then source a temperature to the input. It is best to use an operating temperature to source; for example, if the furnace typically runs at 1700 °F, then 1700 °F should be sourced to the input. Source a range of temperatures – this will help determine whether any difference in readings is linear.

 

NOTE: This value is NOT the temperature displayed on the “Cold Junction Calibration” menu option – rather, this is the value displayed on the main screen along with set point and output.

 

If the displayed value does not equal the value being sourced, then a Cold Junction Calibration may be necessary.  To begin, note the difference between the displayed temperature and the sourced temperature.  This is the adjustment that will be made in the “Cold Junction” menu.  For example:

 

Source Temp	Displayed Temp	Difference	Cold Junction Adjustment	Current Temp of Terminals	New Temp of Terminals
1700	1711	11 High	-11	72	61

 

In this situation, the displayed temperature on the main screen is 11° higher than the sourced input.  Therefore, 11° must be subtracted from the current “temperature of terminals” reading.  Use the up and down arrows to adjust the “Enter temperature of terminals” input box to the appropriate value (in this case, 61).

 

Click on the “Calibrate” button to begin the calibration.

 

After 30 minutes, verify the calibration by again sourcing a temperature to the input and checking the displayed temperature reading on the main display. It is recommended to perform this calibration check after every cold junction calibration.

 

Click on the Done button to close down the screen.