Specifications

Temperature Accuracy
The following pages have temperature accuracy graphs that include instrument
and firmware linearization errors. The linearization algorithm used is based on
the IPTS-68(78) standard transducer curves. Add the transducer accuracy to
determine total measurement error.
The thermocouple graphs on the following pages include only the errors due to
measuring the voltage output of the thermocouple, as well as the algorithm
errors due to converting the thermocouple voltage to temperature. To this error
must be added the error due to measuring the reference junction temperature
with an RTD or a 5k thermistor. See the graphs for the RTD or the 5k thermistor
to determine this additional error. Also, the errors due to gradients across the
isothermal reference must be added. If an external isothermal reference panel
is used, consult the manufacturer’s specifications. If VXI Technology
termination blocks are used as the isothermal reference, see the notes below.
NOTE
1) When using the Terminal Module as the isothermal reference, add ±0.6 °C to
the thermocouple accuracy specs to account for temperature gradients across
the Terminal Module. The ambient temperature of the air surrounding the
Terminal Module must be within ±2 °C of the temperature of the inlet cooling air
to the VXI mainframe.
2) When using the VT1586A Rack-Mount Terminal Panel as the isothermal
reference, add ±0.2 °C to the thermocouple accuracy specs to account for
temperature gradients across the VT1586A. The VT1586A should be mounted
in the bottom part of the rack, below and away from other heat sources for best
performance.
The temperature graphs are found on the following pages:
·
Thermocouple Type E (-200 to 800 °C) ..............332,333
· Thermocouple Type E (0 to 800 °C) .................334,335
·
Thermocouple Type EEXtended ....................336,337
·
Thermocouple Type J ............................338,339
·
Thermocouple Type K ...............................340
·
Thermocouple Type R ............................341,342
·
Thermocouple Type S ............................343,295
·
Thermocouple Type T ............................345,346
·
Reference Thermistor 5k ..........................347,348
·
Reference RTD 100 W ...............................349
·
RTD 100 W ....................................350,351
·
Thermistor 2250 W ..............................352,353
·
Thermistor 5 kW ................................354,355
·
Thermistor 10 kW ...............................356,357
Appendix A 331
Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com