MercuryiTC
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9.1 Overview of the temperature sensor board ..................................................................119
9.2 Installing a temperature sensor board .........................................................................119
9.2.1
Fitting the board .................................................................................................................. 119
9.2.2
Basic check of board operation........................................................................................... 120
9.3 Circuit description of the temperature sensor board ....................................................120
9.3.1
Voltage measurement mode ............................................................................................... 120
9.3.2
Resistance measurement in constant current mode .......................................................... 122
9.3.3
Resistance measurement in constant voltage mode .......................................................... 123
9.3.4
Calibrating the temperature measurement circuit ............................................................... 124
10 HEATER DAUGHTER BOARD ..................................................................................126
10.1 Installing a heater board ..........................................................................................126
10.1.1
Fitting the board .................................................................................................................. 126
10.1.2
Connecting the heater ......................................................................................................... 126
10.2 Circuit description of the heater board .....................................................................126
10.2.1
Description of the heater circuit .......................................................................................... 127
10.2.2
Calibrating the heater circuit ............................................................................................... 128
11 AUXILIARY I/O DAUGHTER BOARD ........................................................................129
11.1 Description of the auxiliary I/O board .......................................................................129
11.1.1
Auxiliary I/O board functions ............................................................................................... 129
11.1.2
Gas-flow control using a motorised needle-valve ............................................................... 130
11.2 Installing an auxiliary I/O board ................................................................................130
11.2.1
Fitting the board .................................................................................................................. 130
11.2.2
Basic check of board operation........................................................................................... 130
11.2.3
Connecting to the auxiliary I/O board ................................................................................. 131
11.2.4
Configuring an input on the auxiliary I/O board .................................................................. 131
11.2.5
Configuring an output on the auxiliary I/O board ................................................................ 132
12 PRESSURE BOARD...................................................................................................134
12.1 Description of the pressure board ............................................................................134
12.1.1
Description of the pressure board circuit ............................................................................ 134
12.2 Installing a pressure board ......................................................................................137
12.2.1
Fitting the board .................................................................................................................. 137
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