Calibration Parameters; Cto; Co And Cg; H And L - Fluke 7341 User Manual

Use "SET" to save the new selection.
9.16

Calibration Parameters

The operator of the bath controller has access to a number of the instrument
calibration constants namely CTO, C0, CG, H, L, and HGbt. These values are
set at the factory and must not be altered. The correct values are important to
the accuracy and proper and safe operation of the bath. These parameters
should not be adjusted. In the event the controller's memory fails, the user may
restore these values to the factory settings. A list of these constants and their
settings are supplied to the user on the Report of Test with the manual.
CAUTION: DO NOT change the values of the instrument calibration con-
stants from the factory set values. The correct setting of these parameters
is important to the safety and proper operation of the instrument.
The calibration parameters menu is indicated by,
Press "SET" five times to enter the menu.
9.16.1

CTO

Parameter CTO sets the calibration of the over-temperature cutout. This is not
adjustable by software but is adjusted with an internal potentiometer. This pa-
rameter is set at the factory.
9.16.2

CO and CG

These parameters calibrate the accuracy of the instrument set-point. These are
programmed at the factory. Do not alter the value of these parameters. If the
user desires to calibrate the bath for improved accuracy, adjust R0 and ALPHA
according to the procedure given in Section 11, Calibration Procedure.
9.16.3

H and L

These parameters set the upper and lower set-point limits of the bath.
Note: A high limit (H) setting below the flash point of the fluid in the bath is
highly recommended.
9.16.4

HGbt

This parameter is the temperature where the hot gas bypass activates. This pa-
rameter is factory set. To insure the bath's best performance without damaging
its compressor, DO NOT alter the value of this parameter.
Calibration parameters menu
CAL
9 Controller Operation
Calibration Parameters
55