Bath Temperature; Reset Cutout - Fluke 7341 User Manual

Calibration bath

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This chapter discusses in detail how to operate the bath temperature controller using the

front control panel. Using the front panel key switches and LED display the user may

monitor the bath temperature, set the temperature set-point in degrees C or F, monitor the

heater output power, adjust the controller proportional band, set the cutout set-point, and

program the probe calibration parameters, operating parameters, serial and IEEE-488

interface configuration, and controller calibration parameters. Operation is summarized in

Figure 9-1.

Bath Temperature

The digital LED display on the front panel allows direct viewing of the actual bath

temperature. This temperature value is what is normally shown on the display. The units,

C or F, of the temperature value are displayed at the right. For example,

25.00C

The temperature display function may be accessed from any other function by pressing

the "EXIT" button.

Cut-out

The message continues to flash between the actual temperature and Cut-out until the

temperature is reduced and the cutout is reset.

The cutout has two modes — automatic reset and manual reset. The mode determines

how the cutout is reset which allows the bath to heat up again. When in automatic mode,

the cutout will reset itself as soon as the temperature is lowered below the cutout set-

point. With manual reset mode the cutout must be reset by the operator after the

temperature falls below the set-point.

When the cutout is active and the cutout mode is set to manual ("reset") then the display

will flash "cutout" until the user resets the cutout. To access the reset cutout function

press the "SET" button.

The display indicates the reset function.

Bath temperature in degrees Celsius

Indicates cutout condition

Access cutout reset function

Controller Operation

9-3

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