Contents
Thermo Fisher Scientific
Model 15
i
Instruction Manual
xi
Measurement Interface Board Replacement ...................................... 7-38
Front Panel Board Replacement........................................................ 7-39
LCD Module Replacement ............................................................... 7-41
Service Locations............................................................................... 7-42
System Description .......................................................................................... 8-1
Hardware ............................................................................................ 8-1
Optical Bench .................................................................................. 8-2
Band-pass Filter................................................................................ 8-2
Bench Heater Board......................................................................... 8-2
Chopper Motor................................................................................ 8-2
Optical Pickup ................................................................................. 8-3
Gas Filter Wheel .............................................................................. 8-3
Infrared Source................................................................................. 8-3
Pre-amplifier Assembly with IR Detector ......................................... 8-3
Sample Flow Sensor ......................................................................... 8-3
Pressure Transducer ......................................................................... 8-3
Capillary .......................................................................................... 8-3
Pump ............................................................................................... 8-3
Purge Flow Switch (Optional).......................................................... 8-3
Firmware............................................................................................. 8-3
Instrument Control.......................................................................... 8-4
Monitoring Signals........................................................................... 8-4
Output Communication .................................................................. 8-4
Electronics .......................................................................................... 8-4
Motherboard.................................................................................... 8-5
Measurement Interface Board .......................................................... 8-5
Measurement Interface Board Connectors..................................... 8-6
Flow Sensor Assembly ...................................................................... 8-6
Pressure Sensor Assembly ................................................................. 8-6
Bench Heater Board......................................................................... 8-6
Pre-amp Board Assembly ................................................................. 8-6
Digital Output Board....................................................................... 8-7
I/O Expansion Board (Optional) ..................................................... 8-7
Front Panel Connector Board .......................................................... 8-7
I/O Components................................................................................. 8-7
Analog Voltage Outputs................................................................... 8-8
Analog Current Outputs (Optional) ................................................ 8-8
Analog Voltage Inputs (Optional) .................................................... 8-8
Digital Relay Outputs ...................................................................... 8-9
Digital Inputs................................................................................... 8-9
Serial Ports ....................................................................................... 8-9
RS-232 Connection ....................................................................... 8-10
RS-485 Connection ....................................................................... 8-10
Ethernet Connection...................................................................... 8-11
External Accessory Connector ........................................................ 8-11
Chapter 8