Thermo Scientific 49i, Instruction Manual, Page: 313 / 314

Geysitech (Bayern-Hessen) Protocol
Geysitech Commands
Thermo Fisher Scientific Model 49
i
Instruction Manual D-7
The attached concentrations are in the selected gas units. The
measurements that are attached to the response if not valid in a particular
mode then a value of 0.0 will be reported.
Measurements Reported
in Response to DA
Command for 49 i and 49 i
PS
The following measurements reported in response to DA command are for
the Model 49
i and 49 i Primary Standard.
Single Range Mode for 49
i
and
49
i
PS
The 1 measurement reported in single range mode for the Model 49 i and
49
i
Primary Standard includes:
• O
3
Dual/Auto Range Mode for 49
i The 2 measurements reported in dual or auto range modes for the Model
49
i include:
• low O
3
• high O
3
Dual/Auto Range Mode for 49
i PS The 2 measurements reported in dual or auto range modes for the Model
49
i Primary Standard include:
• O
3
Actual
• O
3
Set point
Operating and Error Status
See Table D-1 for operating status and Table D-2 for error status for the
Model 49
i
and the Model 49
i
Primary Standard.
Table D-1. Operating Status for Model 49
i
and 49
i
Primary Standard
D7 D6 D5 D4 D3 D2 D1 D0
Æ
Bit 8 7 6 5 4 3 2 1
Æ
Hex-value 80 40 20 10 08 04 02 01
MSB LSB
Operating status:
Service Mode (On) 0 0 0 0 0 0 0 1
Maintenance (Local) 0 0 0 0 0 0 1 0
Zero gas (On) 0 0 0 0 0 1 0 0
Span gas (On) 0 0 0 0 1 0 0 0
Not used 0 0 0 1 0 0 0 0