Teledyne 3020T User Manual
Page 33
Trace Oxygen Analyzer
Installation 3
3-11
Teledyne Analytical Instruments
Figure 3-7: Remote Solenoid Return Connector Pinouts
The voltage from these outputs is nominally 0 V for the OFF and
15 V dc for the ON conditions. The maximum combined current that can be
pulled from these output lines is 100 mA. (If two lines are ON at the same
time, each must be limited to 50 mA, etc.) If more current and/or a different
voltage is required, use a relay, power amplifier, or other matching circuitry
to provide the actual driving current.
In addition, each individual line has a series FET with a nominal ON
resistance of 5 ohms (9 ohms worst case). This could limit the obtainable
voltage, depending on the load impedance applied. See Figure 3-8.
Figure 3-8: FET Series Resistance
3.4
Installing the Micro-Fuel Cell
The Micro-Fuel Cell is not installed in the cell block when the
instrument is shipped. It must be installed before the analyzer is placed in
service.
Once it is expended, or if the cell is exposed to air for too long, the
Micro-Fuel Cell will need to be replaced. The cell could also require replace-
ment if the instrument has been idle for too long.