FLUKE 9100S-D-156 User Manual for the Fluke 9100S-D-156 Dry Block Calibrator with Block D

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9100S Dry-Well Calibrator

Controller Conguration

to lower the temperature back down. In this way the temperature is maintained at a

fairly constant level.

The temperature stability of the well and response time depend on the width of the

proportional band. If the band is too wide, the well temperature deviates excessively

from the set-point due to varying external conditions. This is because the power

output changes very little with temperature and the controller cannot respond very

well to changing conditions or noise in the system. If the proportional band is too

narrow, the temperature may swing back and forth because the controller overreacts to

temperature variations. For best control stability, the proportional band must be set for

the optimum width.

The proportional band width is set at the factory and printed on the Report of

Calibration. The proportional band width may be altered by the user if desired to

optimize the control characteristics for a particular application.

The proportional band width is easily adjusted from the front panel. The width may

be set to discrete values in degrees C or F depending on the selected units. The

proportional band adjustment is accessed within the secondary menu. Press “SET” and

“EXIT” to enter the secondary menu and show the heater power. Then press “SET” to

access the proportional band.

S+E

 Accessheaterpowerinsecondarymenu

SEC FlashesSECforsecondarymenuandthendisplaysthe

heaterpower

12.0P Heaterpowerinpercent

 Accessproportionalband

PrOP Flashespropandthendisplaysthesetting

4.1 Proportionalbandsetting

To change the proportional band press u or d.

10.0 Newproportionalbandsetting

To accept the new setting press “SET”. Press “EXIT” to continue without storing the

new value.

 Acceptthenewproportionalbandsetting

6.8 Controller Conguration

The controller has a number of conguration and operating options and calibration

parameters which are programmable via the front panel. These are accessed from the

secondary menu after the proportional band function by pressing “SET”. Pressing

“SET” again enters the rst of three sets of conguration parameters — operating

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FLUKE 9100S-D-156 Dry Block Calibrator with Block D