Oxygen Exponent
The range of oxygen is factory configured using the oxygen exponent number. Percent oxygen is the standard setting where the oxygen exponent is set to 2 and the output range is 0.00% to 20.9%. For a part per million (ppm) range the exponent would be set to 6 and the output range of 0.00 X
TC Type
The following table shows the available thermocouple types and the ranges. BOLD indicates the typical oxygen default.
Thermocouple | Zero ºF | Zero °C | Span ºF | Span °C |
type |
|
|
|
|
B | 800 | 425 | 3000 | 1650 |
C | 32 | 0 | 3000 | 1650 |
E | 32 | 0 | 1300 | 700 |
J | 32 | 0 | 1300 | 700 |
K | 32 | 0 | 2300 | 1260 |
N | 32 | 0 | 2300 | 1260 |
NNM | 32 | 0 | 2000 | 1090 |
R | 300 | 150 | 3000 | 1650 |
S | 300 | 150 | 3000 | 1650 |
T | 32 | 0 | 700 | 370 |
The Cold Junction correction is applied to all thermocouple types.
Analog Output Channels
The analog outputs are factory configured to provide 4 to 20mA signals proportional to selectable process values.
NOTE
The Analog Output Channels are isolated
If a chart recorder is to be used, it should have input specifications within 4 to 20 mA. If the recorder only responds to VDC inputs it will be necessary to add a 250 ohm dropping resistor across its input terminals.
The ideal location of the recorder is adjacent to the instrument but it may be located remotely if the connecting wires are properly shielded. For best results, the chart recorder input(s) should be isolated from ground.
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11/14/2006 | Rev. 14 |
