Thermo Jarrell Ash,
Ash, A.A., 12E
Atomic absorption spectrophotometer
|
Optical Mount |
Ebert |
|
Focal Length |
1/3 meter |
|
Effective Aperture Ratio |
F/9 |
|
Theroretical Resolution |
38,000 |
|
First Order Reciprocal Linear Dispersion |
2.5 nm/mm |
|
Scattered Light |
Less than 0.2% |
|
Slits |
Curved, variable through seven steps giving a spectral bandpass from
0.04 to 2nm |
|
Bandpass, nm |
Slit pairs, um |
|
0.037 |
10/15 |
|
0.075 |
20/30 |
|
0.15 |
40/60 |
|
0.3 |
80/120 |
|
0.5 |
160/200 |
|
1 |
320/400 |
|
2 |
640/800 |
|
Slit Height |
10nm |
|
Wavelength Range |
180 to 900nm |
|
Grating |
Standard: 32 x 32mm area, Optional: 40 x 40 mm area 1200 lines/mm |
|
Blaze |
UV Grating 250nm (optional) Visible g/g: 500nm |
|
Condition |
Refurbished or As Is, depending on customer request. |
|
Warranty |
Depending on customer request |
PHOTOMULTIPLIER:
The detection system uses a photomultiplier tube R-372 (20362-01) as standard
equipment. For increased infrared response (>700nm), the optional
photomultiplier tube (20368-09) is available. The r-955 phototube has a wide
spectral range: from arsenic at 193.7 nm to cesium at 852.1nm.
Video Display: All instructions and messages are displayed on a 15 x 18 cm
cathode ray tube (CRT)
Microcomputer:
- Retention of memory even when power button is turned off.
- Automatic calibration and zero functions.
- Format lock switch.
- Restart/standby switch
- Battery ON
- CRT "cookbook" display
NOTE: Baud rate is factory se at 1200 for the high rate and 300 for the low
rate.
OPTIONAL COMPONENTS:
- Automatic Wavelength Drive
- Deuterium Arc Background Corrector compensates for non- specific
molecular absorption and/or light scatter.
- RS232C Interface allows output of the information presented to
the optional printer to another computer via and RS232C
communications port.
- Four-lamp Turret with independent power supplies for each lamp,
replaces the single lamp mount.
- Flame Sensor supplements the standard safety features of ou AA
system, which includes the following:
- Gas pressure sensors to safely extinguish a flame if pressure
begins to fall.
- A safety drain trap that never needs filling
- A frangible diaphragm that protects the operator in case of a
flashback; when activated, the flame sensor will automatically
shutdown the flow of flammable gases if the flame is extinguished
for any reason.
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