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Controls for Wavelength and
Digital Burner
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Wavelength
control counter is in the upper left front
panel.
It consists for a WAVELENGTH Counter to indicated
the wavelength setting of the monochromator in nanometers (nm).
There are Coarse/Fine Wavelength adjustment knobs. These manually
change the wavelength settings of the monochromator.
The SLIT Control is used to select a spectral
slit width for the monochromator. There are four NORMAL slit width
settings (0.07, 0.2, 0.7, and 2.0 nm) used for flame analysis.
Three alternate slit widths settings are used for the HGA Graphite
Furnace or for the operation of other devices.
Wavelength Drive ON/OFF switch turns on the
automatic wavelength drive accessory.
Wavelength Drive FAST/SLOW switch selects either
a FAST (5 nm/min) or SLOW (1 nm/min) scanning speed.
Controls for the Digital-Readout Burner Control
There are three sets
of burner controls. The first selects the fuel, oxidizer system
and allows the gas to be turn on or off. The second shows the
interlock indicators and the third shows the flow rates for the
fuel and oxidizer with adjustable controls to fine tune the flows.
1. Keyboard and Indicators
2. Fuel Display 3. Oxidizer
Display
4. Interlocks Status Indicators
5. Fuel Flow Control
6. Oxidant
Fuel Control
7. Flame On/Off Switch
Burner-Control Unit
| Air/C2H2 |
Selects AIR oxidant and acetylene (C2H2)
fuel operation the indicator to the left of the key lights. |
| N2O/C2H2 |
Selects nitrous oxide (N2O)
oxidant and C2H2 fuel |
| CHK OXID |
Press to display and adjust oxidizer flow settings
prior flame ignition. Does not function once flame is ignited. |
| CHK Fuel |
Press to display and adjust fuel flow settings
prior flame ignition. Does not function once flame is ignited. |
| OverRide |
Press to override the optical flame sensor.
It also defeats the flow checking functions. Not recommended. |
| Flame ON/OFF |
Switch to safely turn flame on/off |
Function of Interlock Indicators
| FLAME Indicator |
Indicator is on when the flame is burning |
| AIR Head Indicator |
Indicator is on only if the air burner head is
in place |
| N2O Head Indicator |
Indicator is on only if the nitrous oxide burner
head is in place |
| DRAIN Indicator |
Indicator is only if connected and if there is
water in the trap |
