Table of Contents
Advertisement
9.14
Calibration Parameters
The operator of the bath controller has access to a number of the bath calibra-
tion constants namely CTO, C0, CG, H, and L. These values are set at the fac-
tory and must not be altered. The correct values are important to the accuracy
and proper and safe operation of the bath. Access to these parameters is avail-
able to the user only so that in the event that the controller's memory fails the
user may restore these values to the factory settings. The user should have a list
of these constants and their settings with the manual.
CAUTION: DO NOT change the values of the bath calibration constants
from the factory set values. The correct setting of these parameters is im-
portant to the safety and proper operation of the bath.
The calibration parameters menu is indicated by,
Press "SET" five times to enter the menu. The display now shows :
9.14.1
CTO
Parameter CTO sets the calibration of the over-temperature cutout. This param-
eter is not adjusted through software. It is adjusted with an internal potentiome-
ter. The following values are set by the factory: 565°C ±5°C.
9.14.2
CO and CG
These parameters calibrate the accuracy of the bath set-point. They are pro-
grammed at the factory when the bath is calibrated and the values are entered
onto the Report of Test.
Note: Do not alter the value of these parameters. If improved bath accuracy is
needed, calibrate R0 and ALPHA according to the procedure given in Section
11.
To restore these values, press "SET" to display,
Press "SET" to show the current value of C0.
Use the "UP" and "DOWN" keys until the value displayed matches the C0
value on the Report of Calibration. Press "SET" to store the value.
The display now shows,
Calibration parameters menu
CAL
Cto
C0
9 Controller Operation
Calibration Parameters
45
Advertisement
Table of Contents
