Tuttnauer 1730EK, Technical Manual

Page: 67 / 111

www.shanghaidelan.com
65
Corrections
22.1
Fix the conne
ctions
22.2
If the resistan
ce does not correlate with the
temperature,
replace the te
mperature s
ensor.
23.1
Fix the conne
ctions.
23.2
Replace The t
emperature
se
nsor (See
symptom s 22.2 in
this par
agraph).
23.3 Replace
ANL
-T2
board.
23.4 Replace
ANL
-T2
board.
24.1
replace the air trap.
24.2 Replace
th
e sensor
24.3 Calibrate
the
system.
24.4 replace
AN
T-T2board.
25.1
Calibrate
the temperature measuring
circuit,
as described i
n para. 6.2 (Temperature
Calibration).
25.2 replace
ANT-
T2board.
Pos
sib
le ca
use ch
eck
-u
p and tes
ts
22.1
The sensor switch
es off. Check the
connections of the senso
r to the board.
Check
that the wires and connecto
r are in good
condition.
22.2
Temperature
sensor is damaged. Disconnect
the PT100 fr
om
the connector and check
its
resistanc
e. (at
0
º
C, R=100
ohms and the
gradient is approx.
0.4
oh
ms/0C).
23.1
The sensor is short-circuit. Check the connections of the sensor to the board.
Make
sure that the wires and connectors are in good
conditi
on
.
23.2
The temperat
ure sensor is defective.
23.3
The temperature measuring circuit on A
N
L-
T2 board is
defective,
23.4
The A/D component
on A
N
L-T2 board
is
defective.
24.1
The air trap is blocked.
24.2
Connect a si
mulator to he PT
100 IN
PUT
on th
e con
tr
ol un
it. I
f th
e d
isp
la
y is
identical to the si
mulator the sensor
PT100 is faulty.
24.3
The display diff
ers from the actual
te
mp
er
at
ur
e in
the
s
ame
dir
ec
tio
n a
s th
e
PT100
24.4 System
cannot
be calibrated.
25.1
The system
must be calib
rated.
25.2
System cannot be calibrated.
Symp
to
m
22. The
tem
perat
ur
e
readout
per
m
an
en
tl
y i
ndi
ca
tes
te
m
per
at
ure higher t
han
140
º
C.
23. The
tem
perat
ur
e
readout
per
m
an
en
tl
y i
ndi
ca
tes
te
m
per
at
ure less t
han
30
º
C, although chamber
te
m
per
at
ure is hi
gh.
24.
The tem
perat
ur
e readout is
sign
if
ica
ntly
dif
fe
ren
t f
rom
th
e ac
tu
al te
mp
er
atu
re
.
25.
The tem
perat
ur
e readout is
not accurate.
Th
ere is a
deviation of
±
20
º
C.