
OPERATION MANUAL
Unistat® T300 Series V2.4.0en/22.07.20//17.12
4.1 Setup mode ................................................................................................. 51
4.1.1 Turning on the temperature control unit .......................................................51
4.1.2 Turning off the temperature control unit.......................................................51
4.1.3 Setting the overtemperature protection ........................................................52
4.1.3.1 General information on the overtemperature protection .........................52
4.1.3.2 Setting “OT limit: heating” .........................................................................52
4.1.3.3 Setting “OT expansion vessel”....................................................................53
4.1.3.4 Setting “Process Safety” .............................................................................53
4.1.3.5 Monitoring via “Display OT values”............................................................53
4.1.4 Testing overtemperature protection for functionality ...................................54
4.1.5 Adjusting the Delta T limiter ...........................................................................54
4.1.5.1 Changing the Delta T limiter.......................................................................54
4.2 The temperature control circuit.................................................................... 54
4.2.1 Select temperature control: Internal or process ............................................55
4.2.2 Temperature control to internal temperature ...............................................55
4.2.3 Temperature control to process temperature................................................56
4.2.4 Delta T limiter .................................................................................................56
4.2.5 Monitoring the Pt100 temperature sensors...................................................56
4.2.6 Optimum control parameters for optimum temperature control..................57
4.2.7 Sub-category: “Select auto/expert mode”......................................................57
4.2.8 Sub-category: “Configuration auto” ...............................................................57
4.2.8.1 Sub-category: “Find parameters”...............................................................57
4.2.8.2 Sub-category: “Control Dynamics”.............................................................59
4.2.8.3 Sub-category: “Fluid Properties”................................................................60
4.2.8.4 Sub-category: “Display parameters” ..........................................................61
4.2.9 Sub-category: “Configuration manual”...........................................................62
4.2.9.1 Sub-category: “Change parameters”..........................................................62
4.2.9.2 Sub-category: “Display parameters” ..........................................................63
4.2.9.3 Sub-category: “Control structure”..............................................................63
4.2.10 Sub-category: “Reset parameters” .................................................................63
4.2.11 Sub-category: “Display parameters”...............................................................64
4.2.12 Setting the setpoint thresholds ......................................................................64
4.2.13 Setting the setpoint ........................................................................................65
4.3 Adjusting the cooling capacity ...................................................................... 65
4.3.1 Cooling water connection ...............................................................................66
4.4 Filling, venting, degassing and draining......................................................... 66
4.4.1 Externally closed application ..........................................................................66
4.4.1.1 Filling and venting externally closed application........................................67
4.4.1.2 Degassing externally closed applications ...................................................68
4.4.1.3 Draining externally closed applications......................................................70
4.4.2 Externally open application ............................................................................71
4.4.2.1 Filling and venting externally open application..........................................71
4.4.2.2 Degassing externally open applications .....................................................73
4.4.2.3 Draining externally open applications........................................................73
5Normal operation 75
5.1 Automatic operation .................................................................................... 75
5.1.1 Temperature control.......................................................................................75
5.1.1.1 Starting the temperature control process..................................................75
5.1.1.2 Ending the temperature control process ...................................................75
5.1.2 Temperature control via a created temperature control program ................76
5.1.2.1 Starting the temperature control program ................................................76