Thermo Scientific 146i Instruction Manual page 35

Thermo Fisher Scientific
Pins 3, 4, and 23 select a gas. Pins 2, 5, 10, 13, 16, 18, 19, 22, 26, 32, 35,
and 37 are ground.
Note Gases D, E, and F are available only when the instrument is equipped
with the 6-gas option.
Gas Bit 3 Gas Bit 2
Pin 23 Pin 4
0 0
0 0
0 1
0 1
1 0
1 0
1 1
Pins 24, 6, and 25 select a gas span level gas.
Span Bit 3 Span Bit 2
Pin 25 Pin 6
0 0
0 0
0 1
0 1
1 0
1 0
1 1
Pins 7, 8, 27, and 9 select an ozonator or permeation oven level gas.
Oz/Perm Bit 4 Oz/Perm Bit 3
Pin 9 Pin 27
0 0
0 0
0 0
0 0
0 1
0 1
Gas Bit 1 Gas Type
Pin 3
0 Gas Off
1 Gas A
0 Gas B
1 Gas C
0 Gas D
1 Gas E
0 Gas F
Span Bit 1 Span Level
Pin 24
0 Span 0
1 Span 1
0 Span 2
1 Span 3
0 Span 4
1 Span 5
0 Manual
Oz/Perm 2 Oz/Perm Bit 1
Pin 8 Pin 7
0 0
0 1
1 0
1 1
0 0
0 1
Model 146i Instruction Manual
Installation
Remote Interconnections
Ozonator or
Permeation
Oven Levell
Ozon/Perm Off
Ozon Manual
Ozon 1
Ozon 2
Ozon 3
Ozon 4
2-7