Thermo Electron 48C, Instruction Manual

Page: 161 / 204

Appendix B RS-232 Commands
B-3
set zero
This command sets the optional valves to the zero mode. The example sets the
instrument in the zero mode, that is, the instrument is sampling zero air.
Send:
"set zero"
Receive: "set zero ok"
set span
This command sets the optional valves to the span mode. The example below sets the
instrument to the span mode, that is, the instrument is sampling span gas.
Send:
"set span"
Receive: "set span ok"
sp conc
low sp conc
The “sp conc” command reports the span concentration in single range mode or the high
span concentration in the dual or auto range mode. The “low sp conc” command reports
the low span concentration level in the dual or auto range mode. The example below
reports the span gas concentration in single range mode.
Send: "sp conc"
Receive: "sp conc 1000"
set sp conc xxxx
set low sp conc xxxx
The “set sp conc” command sets the span concentration level in the single range mode or
the high span concentration level in the dual or auto range mode. The “set low sp conc”
command sets the low span concentration in the dual or auto range mode. The example
below sets the span concentration to 1000 ppm in the single range mode.
Send:
"set sp conc 1000"
Receive: "set sp conc 1000 ok"