FLUKE 1504-156 User Manual for the Fluke 1504-156 Thermometer Readout, Tweener Thermistor, ±0.002°C at 0°C Temperature Accuracy

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sponse time. You can set it to any value between 0 and 60 seconds. A value

of 0 disables the filter. The default time constant is 4 seconds.

To change the filter value, enter the Sample menu. This is done by first press

ing the Menu button (“SEt?” appears) then pressing the F/Sample button.

The display will briefly indicate “SA Par”, then “FILtEr”, then the current filter

value. Use the U and D buttons to increase or decrease the filter value then

press Enter. The next parameter in the menu, the current, will then appear.

6.6 Setting the Current

You can select one of two options for the probe excitation current: 1.0 mA (de-

fault) or 0.5 mA. The current is set within the Sample menu. Press the Menu

button (“SEt?” appears) then press the F/Sample button. The filter value will

appear. Press Enter to continue. The display will briefly show “CurrEnt” fol-

lowed by the value for the current. You can use the Uand Dbuttons to change

the value for the current. Press Enter to continue.

6.7 Power Saver

The power saver feature is useful for conserving power when operating from a

battery. It causes the display to blank after a period of no user activity. The

power saver feature can reduce operating current by as much as 100 mA.

While the display is blanked a small illuminated dot appears on the left side of

the display as an indication that the 1502A is still operating. Pressing any but-

ton on the front panel restores the display. You can program the power saver

to activate after a specified period of time from 5 minutes to 60 minutes in in-

tervals of 5 minutes. You can also disable the power saver feature completely.

The power saver is off by default.

The power saver is programmed in the Sample menu. Press the Menu button

(“SEt?” appears) then press the Sample menu button. Press Exit twice to

skip to the power saver parameter. The display will briefly show “PO SA” fol-

lowed by the power saver setting. You can use the U and D buttons to

change the power saver period (in minutes) or set it to OFF. Press Enter to

continue.

22 Manual Rev. 952801 Hart Scientific

6 General Operation

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FLUKE 1504-156 Thermometer Readout, Tweener Thermistor, ±0.002°C at 0°C Temperature Accuracy