Teledyne 3000ZA2G - Zirconium oxide analyzer - Manual (Page 63)

Trace Oxygen Analyzer Operation
Teledyne Analytical Instruments 51
ppm O
2
Voltage Signal
Output (VDC)
Current Signal
Output (mA dc)
0 0.0 4.0
10 0.1 5.6
20 0.2 7.2
30 0.3 8.8
40 0.4 10.4
50 0.5 12.0
60 0.6 13.6
70 0.7 15.2
80 0.8 16.8
90 0.9 18.4
100 1.0 20.0
The analog output signal has a voltage which depends on the
oxygen concentration AND the currently activated analysis range. To
relate the signal output to the actual concentration, it is necessary to
know what range the instrument is currently on, especially when the
analyzer is in the auto ranging mode.
To provide an indication of the range, a second pair of analog
output terminals is used. They generate a steady preset voltage (or
current when using the current outputs) to represent a particular range.
The following table gives the range ID output for each analysis range:
Range Voltage (V) Current (mA)
LO 0.25 8
MED 0.50 12
HI 0.75 16
CAL (0-25%) 1.00 20