Operation
Range Menu
Thermo Fisher Scientific
Model 410
i
Instruction Manual
3-13
Table 3–4.
Default Analog Outputs in Auto Range Mode
Channel
Connector Pin
I/O Terminal Pin
Description
1 14
1
CO
2
Analog Output
2 33
3
Range
Status:
half-scale = high range
zero scale = low range
3 15
5
None
4 34
7
None
5 17
9
None
6 36
11
None
Ground
16, 18, 19, 35, 37
2, 4, 6, 8, 10, 12
Signal Ground
Note
All channels are user definable. If any customization has been made
to the analog output configuration, the default selections my not apply.
▲
The Gas Units screen defines how the CO
2
concentration reading is
expressed. In the standard model, gas units of parts per million (ppm) and
milligrams per cubic meter (mg/m
3
) are available. The mg/m
3
gas
concentration mode is calculated using a standard pressure of 760 mmHg
and a standard temperature of 20 °C. In the high level model, additional
gas units of percent (%) are available.
When switching from ppm to mg/m
3
, the analog ranges all default to the
highest range in that mode. For example, when switching from mg/m
3
to
ppm, all the ranges default to 10000 ppm. Therefore, whenever you change
units, you should also check the range settings.
●
In the Main Menu, choose Range >
Gas Units
.
Note
If the units change from ppm to mg/m
3
or vice versa, the instrument
should be re-calibrated, particularly if the user’s standard temperature is
different from 20 °C. A display warning will appear that ranges will be
defaulted and calibration parameters reset.
▲
GAS UNITS:
CURRENTLY: ppm
SET TO: mg/m3 ?
AND SET RANGES AND CAL TO
X
DEFAULT SETTINGS
XXXXXXXXXX
CHANGE VALUE SAVE
RANGE AVG DIAGS ALARM
Gas Units
