Teledyne 3000TA-XLEU - Trace oxygen analyzer - Manual (Page 45)

Trace Oxygen Analyzer Installation
Teledyne Analytical Instruments 29
Figure 3-5: Remote Probe Connections
The voltage from these outputs is nominally 0 V for the OFF and
15 VDC 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 can limit the
obtainable voltage, depending on the load impedance applied. See
Figure 3-6.
Figure 3-6: FET Series Resistance