Thermo Scientific 42i Instruction Manual page 18

Contents
Chapter 9
xii Model 42i Instruction Manual
Optical Filter .................................................................................... 8-3
Pressure Transducer ......................................................................... 8-3
Sample Flow Sensor ......................................................................... 8-3
Ozonator ............................................................................................. 8-3
Ozonator Flow Switch ..................................................................... 8-3
Photomultiplier Tube ......................................................................... 8-3
Photomultiplier Tube Cooler .............................................................. 8-3
Pump .................................................................................................. 8-3
Sample Capillary .............................................................................. 8-3
Dry Air Capillary ............................................................................. 8-4
Software .............................................................................................. 8-4
Instrument Control .......................................................................... 8-4
Monitoring Signals ........................................................................... 8-4
Measurement Calculations ............................................................... 8-5
Output Communication .................................................................. 8-5
Electronics .......................................................................................... 8-6
Motherboard .................................................................................... 8-6
External Connectors ...................................................................... 8-6
Internal Connectors ...................................................................... 8-6
Measurement Interface Board .......................................................... 8-7
Measurement Interface Board Connectors ..................................... 8-7
Flow Sensor Assembly ...................................................................... 8-7
Pressure Sensor Assembly ................................................................. 8-7
Temperature Control Board ............................................................. 8-7
PMT Power Supply Assembly .......................................................... 8-8
Input Board Assembly ...................................................................... 8-8
Digital Output Board ....................................................................... 8-8
I/O Expansion Board (Optional) ..................................................... 8-8
Front Panel Connector Board .......................................................... 8-9
I/O Components ................................................................................. 8-9
Analog Voltage Outputs ................................................................... 8-9
Analog Current Outputs (Optional) .............................................. 8-10
Analog Voltage Inputs (Optional) .................................................. 8-10
Digital Relay Outputs .................................................................... 8-10
Digital Inputs ................................................................................. 8-10
Serial Ports ..................................................................................... 8-11
RS-232 Connection ....................................................................... 8-11
RS-485 Connection ....................................................................... 8-12
Ethernet Connection ...................................................................... 8-12
External Accessory Connector ........................................................ 8-12
Optional Equipment ........................................................................................... 9-1
Internal Zero/Span and Sample Valves ................................................ 9-1
Internal Permeation Span Source ........................................................ 9-2
Permeation Tube Installation ........................................................... 9-3
Computation of Concentrations ...................................................... 9-4
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