h) When RTD/Ω mode is first selected, the 3001 is placed in the standby (Stby) mode
which puts the positive (+) output jack into a high impedance state (>100k ohm) for
safety. To place the output into the active state, press the key which toggles
between the standby and operate modes.
4.5 Resistance Temperature Detector (RTD) with Custom Coefficients
The 3001 has the capability to store coefficients for up to 5 custom RTD curves.
To enter the coefficients for a custom RTD curve:
a) Select RTD measure or source mode as described in the preceding sections.
b) Press the key until the USR_DEF type is selected.
c) Press the key to display the curve selection prompt "RTD CUSTOM (1-
5)".
d) Press the numeric key corresponding to the custom RTD curve to be entered.
e) At the "SET(1)/RECALL(2)" prompt, press to select custom RTD curve
data entry.
f) At the "ENTER MIN TEMP" prompt, enter the minimum temperature limit for the
custom RTD curve, and press the key.
g) At the "ENTER MAX TEMP" prompt, enter the maximum temperature limit for
the custom RTD curve, and press the key.
h) At the "ENTER R0" prompt, enter the nominal resistance value (R0) for the
custom RTD curve, and press the key.
i) At the "ENTER COEFF A" prompt, enter the first (A) coefficient for the custom
RTD curve, and press the key. To enter a coefficient that includes an
exponent, enter the mantissa, press the and keys to select the EXP
function, enter the exponent, and press the key.
j) When prompted, enter the second (B) and third (C) coefficients in the same
manner.
k) To abort the curve entry without saving any changes, press the key.
To use a custom RTD curve:
a) Select RTD measure or source mode as described in the preceding sections.
b) Press the key until the USR_DEF type is selected.
c) Press the key to display the curve selection prompt "RTD CUSTOM (1-
5)".
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