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2200 Temperature Controller
User's Guide
9.2.2
42
=
−
F
R
R
2
1
−
AF
BE
=
delta
−
DE CF
T
- Measured temperature using thermometer.
1-3
R
- Value of R from display of 2200 (Press SET and DOWN at the same
1-3
time.)
where
T
and R
are the measured temperature and resistance at 50.0 °C
1
1
T
and R
are the measured temperature and resistance at 250.0 °C
2
2
T
and R
are the measured temperature and resistance at 450.0 °C
3
3
Compute R
& ALPHA:
0
⎡
⎤
⎡
T
=
+
1
a
T
delta
⎣ ⎢
⎦ ⎥
⎣ ⎢
1
1
100
⎡
⎤
⎡
T
=
+
3
a
T
delta
⎣ ⎢
⎦ ⎥
⎣ ⎢
3
3
100
−
R a
R a
=
3 1
1 3
rzero
−
a
a
1
3
−
R
R
=
1
3
alpha
−
R a
R a
3 1
1 3
delta is the new value of DELTA computed above
5. Program the new values for DELTA (delta), R
into the calibrator with the following steps.
1. Press SET and EXIT keys at the same time and then press SET until R
is displayed.
2. Press SET then use the UP or DOWN keys until the correct numerical
setting is displayed. Press SET to accept the new value.
3. Repeat step 2 for ALPHA and DELTA.
⎤
T
−
1
1
⎦ ⎥
100
⎤
T
−
3
1
⎦ ⎥
100
(rzero) and ALPHA (alpha)
0
0
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