− 33 −
１２．
１２．１２．
１２．Offset value
The function is to correct differential value between temperature of temperature sensor and
of internal 1/2H (centre of chamber).
Initial offset
001 (MDF-U333): Shift –1.5℃from temperature of temperature control sensor (PV)
002 (MDF-U537): Shift +1.0℃from temperature of temperature control sensor (PV)
(For upper, lower compartment)
003 (MDF-U537D): Shift +0.0℃from temperature of temperature control sensor (PV)
(For upper, lower compartment)
Second offset
001 (MDF-U333): None
002 (MDF-U537):-18℃≧SV≧-25℃--- shift –0℃from PV (For upper, lower compartment)
-26℃≧SV -- shift +1.0 from PV (For upper, lower compartment)
003 (MDF-U537D):-18℃≧SV≧-30℃--- shift PV-2.4+(-18-SV)÷5 (For upper compartment)
-30℃＞SV --- shift –0℃from PV (For upper compartment)
*Note) For lower compartment, add 0℃ to PV.
１３．
１３．１３．
１３．Display offset
In display, temperature that is lower than SV is shown for a little time. With this case, display
offset –0.5℃should be done. (Round off numbers to the first decimal point)
１４．
１４．１４．
１４．Remote alarm
During normal operation … … … Remote alarm contact is OPEN
During alarm or power failure … … … Remote alarm contact is CLOSE
１５．
１５．１５．
１５．Others
MDF-U537: In case of : -18℃≧SV≧–25℃ with PV-SV+5℃≧0
Solenoid valve is: Forced to turn OFF
MDF-U537: In case of : PV-(SV-0.6℃)≧0 with PV
TOP
- PV
BOTTOM
-1＞0
Solenoid valve is: Forced to turn OFF
(In PV-(SV-0.6)＜0, quit to be forced to turn OFF)
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