On 44, Uf 110, Hauptschalter – Memmert ICH C (with CO2 control) Climate chambers User Manual
Page 34: Ab c d e, Adjusting temperature monitoring, Alarm, Operation and control, 52°c 48°c, 27°c 23°c, 50°c 25°c t
34
D30393 | Date 10/2014
Operation and control
Automatic temperature monitor (
temperature monitor (ASF)
ASF)
temperature monitor (
temperature monitor (
temperature monitor (
temperature monitor (
ASF is a monitoring device that automatically follows the set temperature setpoint within an
adjustable tolerance band (Fig. 19).
The ASF – if switched on – is automatically activated as soon as the actual temperature value
reaches 50 % of the set tolerance band of the setpoint (in the example: 50 °C ± 1 K) for the
first time (section A).
When the temperature violates the set tolerance band around the setpoint (in the example in
Fig. 19:
50 °C ± 2 K) – e.g. if the door is opened during operation (section B of illustration) – the alarm
is set off. The ASF alarm is automatically triggered as soon as 50 % of the set tolerance band
of the setpoint (in the example: 50 °C ± 1 K) are reached again (section C).
If the temperature setpoint is altered, the ASF is automatically disabled temporarily (in this
example: The setpoint is changed from 50 °C to 25 °C, section D) until the tolerance range of
the new temperature setpoint is reached again (section E).
52°C
48°C
ASF active
52°C
48°C
ASF alarm
ASF active
ASF active
27°C
23°C
°C
50°C
25°C
t
A
B
C
D
E
AUTO
AUTO
AUTO
Fig. 19
Schematic diagram of how the ASF temperature monitoring works
Mechanical temperature monitoring:
Mechanical temperature monitoring: Temperature limiter
Temperature limiter (TB)
(TB)
The appliance is equipped with a
mechanical temperature limiter (TB) of
protection class 1 in accordance with DIN 12
880 (Fig. 20).
If the electronic monitoring unit should fail
during operation and the factory-set maxi-
mum temperature is exceeded by approx.
20 °C, the temperature limiter, as the final
protective measure, switches off the heating
permanently.
Adjusting temperature monitoring
Adjusting temperature monitoring
1. Press the activation key to the left of the
ALARM
display. The temperature moni-
toring setting is automatically activated
( ).
).
Hauptschalter
>
Zu der Typenbezeichnung gibt es momentan drei Entwurfsrichtungen,
ich kann Ihnen noch nicht sagen, ob Memmert hierzu schon eine Entscheidung
getroffen hat.
Die hier gezeigt Variante, ist die von uns empfohlene Richtung.
UF 110
PLUS
ON
344
.4
444
4
.
TEMP
Set
°C
°C
FLAP
40
%
TIMER
h
d
10
02
End
Sept.
29
22 24
FAN
%
0
%
100
ALARM
max
444
.4°C
auto
+/-
0.0
K
min
444
.4°C
O
O
ON
N
N
N
O
O
N
O
Manu
44.Sept
180
.0 °C
Set 999
.9 °C
TEMP
TIMER
End 14:45
FLAP
Holz trocknen
aufheizen
09:12h
Fr 20.10.2010 20:31
min
000°C
ALARM
0
12
%rh
°C
DRAPH
off
ON
44
h
:44
m
20
%
ON
max
000
°C
auto off
99K
-
+
ALARM
max
40
.0°C
auto
0.0
K
min
15
.0°C
+-
Fig. 20
Resetting the mechanical temperature limiter