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3.3 - Programming of Pt100 input
When configuring the meter as thermometer for 3 wires Pt100
sensors, the temperature ranges and resolution available are:
Input
Range (res. 0.1 º)
Range (res. 1 º)
(-100.0 to +800.0) ºC
(-100 to +800) ºC
Pt100
(-148.0 to +1472.0) ºF
(-148 to+1472) ºF
The Pt100 software menu allows selection of temperature units
(Celsius or Fahrenheit), resolution (degree or tenth of degrees) and
a display offset. Provision is made to allow for a sensor offset. If
there is a difference between the temperature under measurement
and the temperature read by the sensor, this can be corrected by
programming an offset from -9.9 to +9.9, with 0.1 º resolution, or
from -99 to +99, with 1 º resolution.
LED ‘TARE’ will light up
each time that an offset value is programmed.
Example:
In a process of temperature control the Pt100 sensor is
located in a part of the process where temperature is 10
degrees below than in the point in where the control has to
be done. By programming an offset of 10 points, with 1
degree resolution, the deviation will be corrected.
Configurable parameters for this input are:
a)
Reading units in degree Celsius "ºC" or Fahrenheit "ºF".
b)
Resolution in tenth of degrees "0.1 º" or in whole
degrees "1 º".
c)
Offset. Offset value is programmable up to ±9.9 º with
tenths resolution, or up to ±99 º with degree resolution.
The instrument comes from the factory with offset=0
After entering these parameters, the display range and linearization
are adjusted automatically
.
