Controller Configuration; Probe Parameters; Alpha - Fluke 7341 User Manual

To accept the new cutout set-point press "SET".
S
The next function is the configuration menu. Press "EXIT" to resume display-
ing the bath temperature.
9.11

Controller Configuration

The controller has a number of configuration and operating options and calibra-
tion parameters, which are programmable via the front panel. These are ac-
cessed from the secondary menu after the cutout set-point function by pressing
"SET." There are 5 sets of configuration parameters - probe parameters, operat-
ing parameters, serial interface parameters, IEEE-488 interface parameters, and
controller calibration parameters. The menus are selected using the "UP" and
"DOWN" keys and then pressing "SET". Pressing "EXIT" in any secondary
menu exits and returns to displaying the temperature (see Figure 5, Controller
Operation Flowchart).
9.12

Probe Parameters

The probe menu is indicated by,
PrObE
Press "SET" to enter the menu. The probe parameters menu contains the pa-
rameters, R0 and ALPHA, which characterize the resistance-temperature rela-
tionship of the platinum control probe. These parameters may be adjusted to
improve the accuracy of the bath. This procedure is explained in detail in Sec-
tion 11, Calibration Procedure.
The probe parameters are accessed by pressing "SET" after the name of the pa-
rameter is displayed. The value of the parameter may be changed using the
"UP" and "DOWN" buttons. After the desired value is reached press "SET" to
set the parameter to the new value. Press "EXIT" to skip the parameter ignoring
any changes that have been made.
9.12.1 R0
This probe parameter refers to the resistance of the control probe at 0°C. Nor-
mally this is set for 100.000 ohms.
9.12.2

ALPHA

This probe parameter refers to the average sensitivity of the probe between 0
and 100°C. Normally this is set for 0.00385°C
Accept cutout set-point
Probe parameters menu
9 Controller Operation
Controller Configuration
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