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8.2
Instrument Setup
8.2.1
Display Unit
A1 A2 Er
0.30
[%]
H2/N2
Instr. Set.
Relay Set.
Output Set.
Expert Set.
Unit -> Vol%
H2 in N2
T90 Response
List for MGM
Unit -> ppm
H2 in N2
T90 Response
List for MGM
Operation
Calibration
Diagnosis
Setup
Figure 8.2: changing the displayed unit for gas concentrations
The first item of the instrument setup menu allows selection of the display unit. Pressing <ENTER>
alternates the unit between ppm and Vol.%. Quit the menu with the <UP> key. The value of parame-
ter P76 (see Section 8.5.1) sets the number of digits after the decimals point between 1 and 4 when
the display unit is set to Vol.%. The resolution in ppm is always 1 ppm. All internal calculations of the
FTC300 are done in ppm.Values retrieved through the RS-232 interface will always be in ppm with
1ppm resolution.
8.2.2
Measuring Gas Setup
A1 A2 Er
0.30
[%]
H2/N2
Instr. Set.
Relay Set.
Output Set.
Expert Set.
Operation
Calibration
Diagnosis
Setup
Unit -> Vol%
H2 in N2
T90 Response
List for MGM
Unit -> Vol%
O2 in N2
T90 Response
List for MGM
Unit -> Vol%
User Poly.
T90 Response
List for MGM
Figure 8.3: measuring gas setup
The second line of the instrument setup menu indicates the currently measured binary gas mixture.
For devices with Multi-Gas-Mode (MGM) pressing <ENTER> changes to the next linearization curve
included in the device. Up to 16 binary gas mixtures’ linearization curves can be included. For every
binary gas mixture the corresponding set of linearization parameters and the last used calibration for
the selected linearization are automatically used. The settings of relays, the scaling of the analog
outputs and the measuring range do not change when using different binary gas mixtures.
File name:
FTC300 Manual 1.09KD140704CWI1V05.pdf