Teledyne 501 TRS, Operation Manual, Page: 63 / 111

Teledyne API - T102/501 TRS, Addendum to T101 Operation Manual THEORY OF OPERATION
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10.4.1.1. Sample Chamber
The main electronic components of the sample chamber are the reference detector(see
the
Reference Detector section in the T101 Manual - PN 07266); the UV Lamp (see the
UV source Lamp section in the T101 Manual - PN 07266) and its electronically operated
shutter (see Section 10.2.1 of this addendum); and the sample chamber heating circuit,
Figure 10-3. T102 Sample Chamber
10.4.1.2. Sample Chamber Heating Circuit
In order to reduce temperature effects, the sample chamber is maintained at a constant
50°C, just above the high end of the instrument’s operation temperature range. Two AC
heaters, one embedded into the top of the sample chamber, the other embedded directly
below the reference detector’s light trap, provide the heat source. These heaters operate
off of the instrument’s main AC power and are controlled by the CPU through a power
relay on the relay board. A thermistor, also embedded in the bottom of the sample
chamber, reports the cell’s temperature to the CPU through the thermistor interface
circuitry of the motherboard.
07267B DCN6485