Panametrics CTF878, Service Manual

Page: 36 / 67

Chapter 3.
26 Model CTF878 Service Manual
Figure 30: RTD Calibration Window
1. The first prompt asks you to set the low temperature.
a.
Press
[ENTER]
to open the text box.
b. Use the numeric keys to enter the desired value.
c. Press [ENTER] to confirm your entry.
2. Press the [

] arrow key to move to the Read box, and then press [ENTER] to read the low temperature.
3. Scroll to the Calibrate box and press [ ENTER ]. The low point has been calibrated.
4. The next prompt asks for the value to which you want to set the high temperature.
a. Press [ENTER] to open the text box.
b. Use the numeric keys to enter the desired value.
c. Press [ENTER] to confirm your entry.
5. Press the [

] arrow key to move to the Read box, and then press [ENTER] to read the high temperature.
6. Scroll to the Calibrate box and press [
ENTER
]. The high point has been calibrated.
7. If you are unsatisfied with the calibration, you can reset the temperatures to factory defaults. Press the [

] arrow
key to move to the Reset box, and then press [ENTER] to undo the calibration.
You have completed calibrating the inputs. To leave the Calibrate RTD window,
• Press [F2] (Cancel) to return to Operate Mode without confirming the changes.
• Press [F3] (OK) to confirm the new data. The CTF878 returns to Operate Mode.
Repeat the process to calibrate additional RTD’s.
3.1.7 Testing EEPROM’s
To check the EEPROM on each option card, scroll to the Test EEProm option under the Service menu, and press
[ENTER] . The screen appears similar to Figure 31 below. This is information regarding the option card located in Slot 1.
Note: Option card slots are numbered from right to left.
Calibrate Analog Input
4
Totalizer/Frequency 3:0
1000
OK Cancel
C
Calibrate Reset
Low
High 100 C
Read
Read
Calibrate RTD
0