Operating the F100
Page 4-8 F100-14-001.2
ASL 2005
This screen shows that the DIN
conversion method is currently selected
for this channel. Use the Up and Down
keys to highlight the required
conversion method, and then use the
Enter key to select it.
For PRTs, the instrument provides three standard algorithms for converting resis tance to temperature.
The choice of algorithm depends on the PRT type and its c alibration –
• DIN (1992) - used for un-calibrated industrial PRTs with 0.00385 ‘alpha’ value, to provide a
conversion of resistance to temperature in accordance with BS EN60751 (ITS 90) standard
• CVD coeffic ients - Callendar van Dusen used for calibrated industrial or low alpha PRT’s of
0.00385
• ITS-90 coefficients - used for calibrated high alpha PRT’s of values 0.003926 to 0.003928
For Thermistors, the instrument pr ovides one standard algorithms for converting resistance to
temperature –
• Steinhart and Hart
Both PRT and Thermistor probes must be correc tly calibrated to provide their most accurate
performance. The F100 can store calibration data for each of the two channels (only r equired when
passive probes are being used).
For Passive-probe PRTs, the coefficients are set fr om this sub-menu.
8Q LW V
8Q LW V8Q LW V
8Q LW V
&K DQ QHO$
&K DQ QHO$&K DQ QHO$
&K DQ QHO$
&K DQ QHO%
&K DQ QHO%&K DQ QHO%
&K DQ QHO%
/R JJ LQJ
/R JJ LQJ/R JJ LQJ
/R JJ LQJ
6W DW LVWLF V
6W DW LVWLF V6W DW LVWLF V
6W DW LVWLF V
6H WW LQJV
6H WW LQJV6H WW LQJV
6H WW LQJV
6\ VW HP
6\ VW HP6\ VW HP
6\ VW HP
3U RE H7\S H
3U RE H7\S H3U RE H7\S H
3U RE H7\S H
7H PS &RQY
7H PS &RQY7H PS &RQY
7H PS &RQY
&R HI ILFLH QW V
&R HI ILFLH QW V&R HI ILFLH QW V
&R HI ILFLH QW V
', 1
', 1', 1
', 1
&9 '
&9 '&9 '
&9 '
,7 6
,7 6,7 6
,7 6
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