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tv2000-4000mkI-4000DC.docx Rev. 1.06 UK 0718
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Tamson Instruments bv
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7.2
Safety thermostat
When the bath temperature becomes higher than the set
point temperature of the safety thermostat. The heating
electronics and controller are switched-off. The red LED
on the display will light. When the temperature of the bath
has been lowered with approximately 20°K, the
thermostat re-sets itself automatically, however to
continue normal operation the bath has to be switched off
and on again.
When switching-off wait 5 seconds before switching
on again.
7.3
Display
[1]
Temperature readout
[2]
Applied percentage of power
[3]
Operating mode
[4]
Indicator, alarm high, alarm low, control stable
Ad 1: When the controller starts or is restarted, the
displayed value increases to a stable readout appears
after a few seconds.
Ad 2: The controller calculates every second the
amount of power which should be applied for stable
control. The value is displayed with a resolution of 0.1%
and ranges from 0% to 99.9%.
Ad 3: Boost
Bath is heating to set point using
boost heater
Heating
Bath is heating to set point,
boost heater is off
Cooling
Bath is cooling down to set point
Tuning Ratio
Bath is tuning for power needed
at set point, first step
Tuning SA
Bath is tuning, second step
PID SP=25.00 Bath is controlling, set point is
25.00°C (example)
Ad 4:
-
Bath control is stable
-
Alarm high, press button to reset*
-
Alarm low, press button to reset*
* Optional item
1
3
2
4
